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Vol. 2 No. 2 June 1986 Derek Meakin Andre Willey Peter Glover Heather Sheldrick Christopher Payne Mike Cowley AdvertisementManager:John Riding Advertising Sales: John Snowden Editor in Chief: Peter Bremeld ManagingEditor: Technica/Editor: Production Editor: Art Editor: Reviews Editor: News Editor:

Editorial: 061-456 8835 Administration: 061-456 8383 Advertising: 061-456 8500

Subscriptions: 0614800173 Telecom Gold: 72:MAGOOi Telex: 265871 MONREF G Qummg Ref-721MAG001 Prestel Mailbox. 614568383 _

Pub?shed by: Database Publications Ltd, Europa House, 68 Chester Road, Hazel Grove, Stockport SK7 5NY.

Subscription rates for 12 issues, post free: £12 £15

530

~ —

UK Europe Overseas

(A'fma'li .

"Atari User" welcomes program listings and articles for publication. Material should be typed or computer—printed, and preferably double-spaced. Program listings should be accompanied by cassette tape or disc. Please enclose a stamped, self-addressed envelope, otherwise the return of material cannot be guaranteed. Contributions accepted for publication by Database Publications Ltd will be on an all—rights basis. o 1986 Database Publications Ltd. No material may be reproduced in whole or in part without written permission. While every care is taken, the publishers cannot be held legally responsible for any errors in articles, listings or

advertisements. "Atari User" and '.‘Atari ST User" are independent pubiicalions andAtari Carp (UK) Ltd are not responsible for any of the articles they contain or for any of the opinions expressed. News trade distribution: Europress Sales and Distribution Limited, Unit 1, Burgess Road, Ivyhouse Lane, Hastings, East Sussex TN35 4NR.

Tel: 0424 430422. 4 ATARI USER June 7986

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Edward Shark reports on th'5 month 5 events and releases on the other snde of the pond. .

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to Boulderdash, The smash-hit sequel US Gold 5 Arcade 4-pack; Budget car racing fun from Mastertronic; Skramble with great graphics; look-alike a football team; Arcade Manage action in a helicopter Games to suit

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all tastes.

Game Have even more fun playing our Cavern Escape game from last month by designing your own mazes.

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Compiler

Five Liners

The final part

series by Frank our Start O_Dwyer. usmg your compiler With procedures and mtefrupt driven routines.

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From Interrupts and pound Signs to Fried Goldfish .We answer your questions and problems. -

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12 ST art Kev Bulmer concludes his short series on art on the ST with a look at artistic style and techniques.

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Two completely dlfferent approaches to the same how to give your SZOST a massive 1024k problem

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Sol Guber tries out two software releases Word and Treasure Island.

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Take your chouce of two specual offers if you subscribe to Atari User this month There's the Last V8 from Mastertronic for the 8—bit range and a super deal 0” discs for the ST range.

§§§§f §§§> 5

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49

rolling.

3

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The start of a new series in which we invite readers to submit five line programs. Len Golding starts the ball

29

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Andrew Bennett gives you more hints and tips on the ST, and answers

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some of your queries.

June 7986 ATARI USER

5


8 +16 BIT HARDWARE & ACCESSORIES 5205TM(withModuIator) ..................,............£399.99 SOON SZOSTFMasabovewithBuilt—iniMeg.Drive

10408Twim1Me 9. BuiIHHD?VHMonoMoniwr .

8-BIT SOFTWARE Bomderoash"

£92000 -

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KlngoftheRing................................,C/D

104OSTasabovewnthColourMomtor....................£1,149.98

ZoneX

...._............................£149.99 PhilipsgCM8533ColourMomtor...........................P.O.A.

NatoCommander.:.:.“UH.““H“.HHHH'

£19999 3F3141M99-Di?k0'iye Meg.D|skDr|ve $53.54

MonnorCabIe...............................................£19.95

MPdemCab'e----~--~-~~---~~-----~~~~-----~----~-~-~--~---“9-95

anerCabIe.........................,......................£19.95

LX80EpsonNLOPrmter........................................P.O.A.

Eacmhun"-~~A-~~--~-~~----~----------~~------------523-00 C“Shee'Feederw~~~---~-~-~~-~--~----~--~--~~~-----£5300

13°XE‘28KCOmPUtef-~~----~---~~-~~~~~-~-----~--~----~~-5129~95 CX”DEMRgcofdefm-~--~--~--v-~~--~~-~-~~~-~------~-~~~--534-95 105005"Dr”?---.---~-~~--~-~--v--~-~-~--~~-~-~------~-----f129-95

1029DotMatnxPr|nter.....................................£119.99 T°_“°hTab'et---------~~-~-~-~-~----~-~--»-~----------529-95

102°Pf'meHP'Ot‘e'WO'J-~-~~---~-~~----~~-~-~~---~-~-----f79-95 WSZOOOMOdem----_--~--~--~--v----~-~~-~-~----~----~~------P~0~AWS300°Aut°Ans/D'a'---------~--~~---~-~~---~~-~-~~-~~-f299-99 M°USEMGIS--_--_----~-~-~-----~--~-~-------v-----~~-~~--------P~0~AZWOSheetSF'S'mPaDef--~-~~-~~~-------~~---~~~-~-~-~----1519-95 RX/FX/MXR'bb°“s~~-~-~---~-~~~--~~~~------~--~~------~-~--f5-95 P‘QOR'bb°“S-----~~-----~--~~-----~~-------~---~~-~-~--~~--~--f4-95 ST..5YS‘ems‘a"dS-~~-~-----~~A---v----~~-~--~-~-~---~~--~~529-99 3-‘5,,°!Ske"es~~~~~~~~~~~~~~-~-~~-~-------~~~~~---~--~ea°hf3-99 5/~,,D!S'“‘Mes eachf199

3-‘5,,D!“BOX~--------~~~-----------~-~~--~--~---«--------~-£2439 D'SKBOX--~------~-~---:~~---~--~~-~-»-~--~~~--~--~--524-99 “X/FX/MXB'Ue'RedlswwnR'be"--~--~-~~--~-~--~-~----~~~f7~95 VouceMaster..................................,.............£61.95 5/4

STSOFTWARE STACCOUNTS—CHIPSOFT'ST'.........,....................£149.99 Toolbox...................................,.................£29.95 Forth£4995 Basefgggs AIIInfocomAdventures.........................................P.O.A. KRam£2995 KSeka£4995 K-Spread....................................................£49.95 Laserbase........,...,,,...,.........,..,...,,,_,,,,,,,,,,_,£9935 Hex£3995 PCImercomm(VT100TerminalEmulator).....................£129.95 TheFinaIWord £15000

C.0.L.E.ObjectEditor.........................................£34.95 DiskDoCtor..................................................£29.95 Maps&Legends/TheCartographer............................£34.95 Degas£3995 HabaMerge....,,......,......,,...,.,,.,.,.,,,,.,,_,,,,,,,,[39,95 HabaDex....................................................£59.95 HabaHippo'C'...............................................£74.95

HabaWriter.................................................£74.95

Devpac£4995

NEW TlTLES FROM SECS OperaHWSE/PaYO“~-~~~~~-----CA55---~-----~--AT/CG4

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QA'~----~--~-m---~---CASS---------~--~~---~--~AT/C64 f2-99 TheFamilvGame-~~-~n-----v-u-CASS-n-uu-un-WAT f2-99 OperaHOUSE/QA’~~--~~-~-----~-D'5K4~-~~--~--~--AT/CG4 f6-99 FontConstructor..................DISK..................AT £6.99 G°F°nh------~~~---~-~----D'SK-~----~-----~-~----AT {24-99 TheFami'YGame/

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PLEASENOTE: ALLORDERSTAKENWITHEITHERFULLPAYMENT ORDEPOSITWILLNOTBECLEAREDUNTILYOURORDERISREADY TOBEDESPATCHED-

6 ATARI USER

June 7986

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£27.95/£6.95 £39.95/£6.95 £22.95/£e.95 £22.95/£6.95 £39.95/£6.95 £39.95/Soon Spellbreaker?nvisiclue) D/B D/B £29.95/£6.95 gtarcrossUnvisiclue) £34.95/£G.95 uspect(|nvisiclue)..............................D/B £39.95/£6.95 Suspended?nvisiclue)...........................D/B £29.95/£6.95 Wishbringer_(lnvisiclue)---.--...-................D/B £39.95/£6.95 WitneSS(an|S|clue)..............................D/B zOkalnviSiC'ue)~-----------.----.-.-mm“...D/B £22.95/f6.95 Zorkll(|nvisiclue)...............................D/B £29.95/£6.95 Zork_|||(_|nvisiclue)..........,.....,.,._,_,_,,,,,.D/B £29.95/f6.95 AtarlwmerPlus........................................Disk £59.95 £19.95 FinalLegacym...m.----..-..........................Cart CombatChess.........................................Disk £29.95 £49.95 JupiterMission1999...................................Disk MarketForces.........................................Disk £21.95

HitchhikersGuidetotheGalaxy(|nvisiclue)........D/B

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£29.95 L0_deRunner...........................................Dgsk £25.95 £39.95 Prgntshop..............................................Dgsk £21.95 PrintshopGraphlcsI....................................Dlsk £21.95 PrintshopGraphicsIl...................................Disk PrintshopGraphicsIII...................................Disk £21.95 anshopPaper.........-.-............................chs £19.95 MaskoftheSqn.......................................Dgsk£39.95 AIternateReahty...................,...................Dgsk £39.95 £39.95 TempleoprshaiTrilogy............,...................Dusk £29.95 TopDosVersion1.5....................................Disk £24.95 StarLeagueBaseball...................................C/D StarbowIFootbaII......................................C/D £24.95 Karateka

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__-——_————_—-BEING developed by for Andromeda Software next release by Mirrorsoft month is ST Art. This paint program will handle both gra— phics and text, produce an A4 printout for instant leaflets, and offer a cyclical display facility With simple animation. it will be compatible with the ST version of Mirrorsoft's per— Street

Editor, due to be laun—

— THE 5205T-based computer package that spearheaded the rebirth of Atari under has been Jack Tramiel phased out. Having served its purpose of achieving a foothold in the UK serious user market, the original £749 configuration of micro, monitor, external disc drive and

— _

o“Poo

professional program and a cut for the home, education and small business market. Also promised by Mirrorsoft for the ST are Strike -Force Harrier and Spitfire 40 for flight simulation fans.

down

-———-——

Accounts suite A SUITE of integrated

accoun—

ting software for the Atari ST range has been released by

International

Systematics

Microsystems. The range includes General Ledger and Financial Planning, Sales Ledger, Purchase Ledger, Invoicing, Stock Control, Payroll and Job Costing. Prices range from £250 to

£450.

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This includes the 5ZOSTM, 104OSTF and the soon—to—be— available 5203TFM. Since the basic 5208T would be of little use without its own includes monitor. the szosw

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modulator which allows connection to a domestic

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Although the operating TOS/GEM system provided in ROM,you buy an external disc drive to actually do anything with the machine unless you want to wait for the new cartridge— based software to be released. Atari's 500k drive, originally supplied with the SZOST, costs £149.99 and the 1mbyte ver— is now must now

_

,

No price has been set for this latter package, but it is likely that two versions will be a full—blown published

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breed of Atari tech-

the new

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£199.99. Alternatively, AST has Southend-based produced an ST compatible 1mbyte driveforthe surprisingly low price of £99.

sion

There is still no information as to when the SZOSTFM with

built~in

disc drive

available,

although

a

will

be price of

£499.99

has been announced. For those who still want to buy a bundled machine at an all—in price, Atari’s 1mbyte monster with a built—in 1mbyte drive the 104OSTF is available with a monochrome monitor at £799, or with an RGB COlOUl’ monitor at £999—

THE proceeds ofa lost property sale by police has helped buy Atari machines for a youth club project. One of the computers, an Atari 130XE, was taken from the Honor Oak Youth Club, Lewisha m, a nd used for at a national demonstrations conference on computer workln the Youth Service aboard the Royal Princess on the Thames.

The club’s senior youth worker, Mike Fordham, said: “We have four Ataris two 800XLs, a 130XE and a 5208T with disc drive all bought by —

donations from friends of the an educlub, Inter—Action and local cational charity —

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no one

will even be able to get a job stacking shelves unless they can use a

computer”. Atari has already funded the buying of machines for youth clubs andin the past also loaned

use

at

com—

The company also donated two 800 XLs to Inter—Action and Community Computers UK, who help link organisations to potential backers. The Ataris are helping trans— form Britain’s YOUth C|Ub5 into job springboards, according to Ed Berman, founder oflnter-Action, an educational, non—profit making charity,which aidsclubs and organisations. OThe Department of Education and Science hasjust announced a £75,000 grant over the next three years to Inter—Action for

their

youth club computer

projects.

— June 7986 ATARI USER

7


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BITS & BYTES COMPUTERS (Ltd). Mail Order Dept. 40-42 Balmoral Road, Fairfield, Liverpool L6 N F. Tel: 051-264 7362

FOR THE

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799.00 999.00

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FOLLOWING major deals with two top independent software houses a new series of Atari ST adventure from Rainbird games Software is in the pipeline.

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Adventure Quest — as a disc at £19.95 for the Atari ST and a triple cassette at£15.95 forthe 8 bit machines. A second multi—Ioad

advent-

ure, provisionally called Knight Orc, is due out in September, with a third, probably a three—

cassette package,following two months later. 0 Picture shows Rainbird's adventure teams (left to right) the Level 9 brothers—and—sister team of Mike, Peter, Nick and Margaret Austin, Mike Clark, Tony Rainbird and Paula Byrne of Rainbird Software and Ken Gordon and Anita Sinclair of Magnetic Scrolls.

ii. it:

_

§

Dungeon Adventure

Rainbird enables us to continue our research into natural language and other artificial intel— Iigence-related projects". Level 9's deal was signed by Peter Austin,one ofthe partners in the brothers-and-sister com— pany. He said: ’We expect a substantial increase in advent— ure playing and Rainbird is prepared to support our products in a unique way". Rainbird will initially market Level 9’s re-written Colossal triology — Colossal Adventure,

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TI p 8 for

authors GAMES publisher Superior Software is looking for people with new ideas for programs for the Atari range. The firm is offering a free guidebook, Top Tips for Games Authors, which containsgeneral advice about selecting suitable software publishers and writing games software.

Sales Campbell

manager

Ken

"The

rewards can be

says:

for games authors enormous.

"Tim Tyler, one of our authors, who is only 17, has amassed more than £35,000 in royalties over the past year and that figure is still increasing week by week"-

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Anita Sinclair, managing director of Magnetic Scrolls, said: “This agreement with

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The recently—released The Pawn is one of seven disc-based adventures to be written for Rainbird over the next two years by Magnetic Scrolls. Level 9 Computing has also signed an agreement to provide three Rainbird products for the Atari ST over the coming year. After meeting program auth— ors from the two companies publisher Tony Rainbird said: "Part of the Rainbird expansion will involve reversing the cur— rent trend ofimportedAmerican software, to which end we have already made a considerable on the American impression market with British games and

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new joysticks

for the Atari

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£5“?in

games machines have been launched by Palan Electronics. The Fantastic lll has rapid— action dual electronic fire buttons suitable for both left and right handed players. It also has eight directional movement with auto—centering and auto-fire control and comes with a two metre cord. Price:

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ATARI 3 ST

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£6.95. The Quickshot

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Plus has

microswitches with auto-fire capability and two fire buttons so users can shoot with thumb and triggerfinger.Themechanism can be locked to allow a continuous burst of bullets. Single—handed video game play is possible with the Quickshot Il Plus as a result of the built-in suction cups. It costs

£12.95.

NEW version of CashLink has been produced bY CashLink for the Atari szoST. The program, designed for

A

Accounts small

to

medium-sized

businesses, takes advantage of

windows

and pull—down

menus.

Itoffersacomplete accounts department, handling all credit accounts and cash sales, with full accounting Iedgers and

AGBHUNTS

n” MEN” records of stock.

CashLink Accounts costs £295. A full accounting package with Atari 5208T, disc

drive, monitor, printer and accounts program is offered at £1150.

first of printers for its

has launched the

,

Of

-

The SMM804 d°t matrix 80 column printerintroducesanew line Of high speed printers that Wi" be Of integrated design to complement the 16 bit ST range. ROb Harding, Atari UK'S marketing manager, said: M" is our intention to become the major supplier Of all kinds Of

printers

including the daisywheel,dot matrix and laser models during the next 12 to 18 months. 'They will all be priced at affordable levels in order to sell in substantial volumes”. The SMM804 costs £199. June 1986 ATARI USER

9


'

GAME that cost almost £30 when it was first imported from the USA is now on sale for just £2.99 for the Atari 8 bit A

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"S’de the ST THREE new books for the Atari

from

come

First

Publishing. The Anatomy of the Atari ST includes detailed descriptions of the sound and graphic chips, internal hardware and a fully documented BOS assembly “S_ ting. Gem the Ata” ST gives _on the Gem operatinformation o.“ ing system m easy—to—follow .

.

.

language.

.

.

“3275'sizslnggrsnggdl'i’:

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£12.95

ATARI will be competing when tenders are invited by the Royal Navy to supply standard micros for floating for its junior classrooms officers and young sailors.

Theideaisthatbyprovidinga

have a Some warships of computers bought

understand.

Ship

Spokesman-toldAtar/User:"lt the intention to purchase a for standard computer all.our

recreation, offiCially installed. computers

of perforanalySis of missnes, guns and mince er weapons. ot But the Royal Navy wants 3 standard machine capable of helping sailors' basic education in mathematics, English and

subjects,

well

as

70 ATARI USER

machines. Rob

Harding, _marketing of Atari, said: "We are director very interested.to hear about this opportunity to prowde for the Royal Navy. computers The STrange offers‘unbeat— _

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MORE than £400,000 has been invested by distributor Twillstar Computers to improve its ser— vices for Atari users. Over the last three years at its busmess boomed so rnuch West London shop—just 750 sq forced to ft the company was move to larger premises:

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June 7986

requiring many additional

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GERM warfare is the theme of Firebird's Atari 48k release, the Comet Game. It comprises three phases in which there is just one chance to save the world from germ bags that infect a look—alike Halley's Comet. The aim is to hit enough of the germ bags to stop a colony reproducing and infesting the earth's surface. Price £7.95

an ice—patrol vessel, eight survey ships, and a number of frigates, which would all need the larger vessels computers

able value both and in price and is also very ofsailors performance ships-forthe education junior e 5T w anhd at type 0officers er WI e is provmg compu atfloat._”Bt;itfleXiblre. very installed will of course depend popular at all levels ofeducation on the competitive price of the and should suit them perfectly. tenders". “A number of educational. The Royal Navy at present packages will be ready for the has 25 submarines, three air— ST in the near future”.

needed for

other

Ministry of_Defenc'e is

A

funds for StUdY and as well as the

5

craft carriers, 14 destroyers, four Fleet tender training ships,

previously

standard computer a step—by— step teaching system can be worked out so sailors can learn either computerised operational work or CSE and GCE subjects at their own pace and be able to go back over parts they do not

variety from

courses

professional

taught ashore.

Britain has had to double the number of sailors in sea—going jobs, cutting the-time spent in ashore. educational training

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adventure, is one of four bargain priced arcade games from America now being sold under licence by US Gold in Britain. The Americana series also includes New York City, where dangers lurk at famous landmarks, Scooter, a multi— level three dimensional game, and Ollies Follies with 16 screens of action—packed challenges. All cost £2.29, and are available on cassette only.

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Upgrade the 520 ST to one megabyte and add the professlonal look from under £100. 0 °

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The AST-520 MEMORY CARD upgrades the standard 520 ST to ONE MEGABYTE of RAM, and costs under £100 inclusive of VAT!

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The AST-2080, goves even further, brings the RAM to TWO AND A HALF MEGABYTES for less than £400 inclusive!

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You can give your ST a really profeSSIOnal look With the AST SYSTEM CASE It can hold two 3.5 inch, and one 525 inch ?oppy drives, or a Winchester drive together with the ST power supply units. The Monitor can stand on top. The System case will improve your viewing angle and leave your desk uncluttered. PLINTH now available in two styles:

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,2§§%% C222???

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COMPLETE ATARI 520 ST SYSTEMS ’

i

We can advise, install and support complete ST systems. Please call for a quote Below are some examples: Hires Monitor, SF354 360K 1) 520 STM, SM124 disc drive, TOS in ROM, standard software on disc —

5T, one Megabyte RAM installed, 160 CPS matrix printer With NLQ mOdei SM124 Hires Monitor, twin AST drives (2 X 720K), AST Plinth, TOS in ROM and bundled software

AST Disc Drives are all 80-track double-sided, offering 720K (one TWICE the storage capacity of the megabyte unformatted) standard ST drive. They are available in 3.5 and 5.25 inch formats. The drives are daisy chained to the standard ST drive, using the power and data cables supplied.

2) 520

dOY

~

on disc

£1050

----------------

PRICES AST5520 MEMORY CARD, free

fitting* £9999

AST-2080 MEMORY CARD (Available Soon) free

fitting" £39999

3.5ins DRIVE, cased, with leads £9900 5.25ins DRIVE, cased, with leads £10900

DIRECT FROM AST and SELECTED ATARI SPECIALISTS Advanced Solutions Technology Ring SOUTHEND (0702) 618 201 (5 Lines)

AST (Advanced Systems and Techniques) Limited

87 Bournemouth Park Road

Southend-on-Sea Essex 552 SJJ VISA and ACCESS accepted

, .. _

NEW.' Battery-Backed Clock Cartridge Ringfor a lea?et!

---------------,. ‘

‘lnslolling the RAM upgrades will af/ecl your guarantee, which will be replacedby own guarantee. AST will install the upgradefor you, free o/ChOVQEi 01 our For [he AST-520RAM upgrade,you can send in your ST keyboard with £103 to include board and return postage (£110 i/Interlink next-day service 15 require payments;

AST’S

premises.

.

———_—_—_—__

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Ml?B?LlNK TRANSFERS SPA BE P

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kin progress. the wor n ideal solfhe only one, uwean/(33331255 a lthe problem °f ?nding “may i/Cehiclewith a high said after his drag ratio", he

ersonic Sneads 0“ M CR 0 U N K 3215 waves produced hi? bveitaanl3.128 t° “We" Prom emuni— by its leading edges“ transatlantic The project has attracted will _C°tn1?hat

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the attention

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Ofto mafia:

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on- Ine AIRLINE travellers with . . .

a .

Zlazicnepnntzriezlo angles-fig]; 5r:?vjesl'lgirlcyl-ag?rei3aiifornia ins?gzrliink's role in the A more which is to project lslygggkl:?n?gi:>rlilgs?v zrcng/e—f/regl ZFtrisfaofrasti'::Sdlg andarrange— or? sun. of the '

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Association S_°°t_ effichem rm: i'tarfwo n-iiles m ll:nation from see mining |and To Research int_° Americans Wlt-rre otiand to the Jet in is Astra lSco Astronautics FXper" as the most eridef Laboratory in menting With the desngn Ofeal ghous contender for the role moguls?“ spacecraft of Starprobe transporter Cal‘xinnd' tunnel test data that'lcouittjoggi‘ll’lg into far millions constantly it because still cantravel and other data are Oftémlzrietand bY assimilated space encounter being frmnisltaanzftclOZe ‘eaamghgronrgsghz er, antjpitaz‘:

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each

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Lion arepossible. Therefore; we have turnedto MICFOL‘Qd

Sta?dfggeizamJames meani a spo g:[32:18 to Scotland

meessor dolph, Tel-erllceveh¢i)cle t 8 weiier, where

n ALL the world’s a stage, and nowhere more so than

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London where theatregoers have a choice of over 40 glittering, shows. Now, in association with renowned booking agency Edwa rds & Edwards,

MicroLink

can

reserve

your

seat in the stalls at any of them. TheatreLink is a new ser— vice from MicroLink incorporating every play, musical, thriller, comedy and opera —

plus major reviews

and

cabarets being presented in the capital. This cornucopia of enter— tainment ranges from the evergreen The Mousetrap, through old and new favour—

“I

r

ites like Blithe Spirit, Cats and Run For Your Wife, to the new musical Time. To help you make your choice, the menu not only

givesafullalphabeticallistof every show currently running in London but also breaks it down into categories such as musicals, plays, comedies, thrillers and so on.

And

as

well

as

perfor—

times and seat prices, each individual show listing contains the names of the stars appearing andahelpful description of its theme. Bookings on TheatreLink can be made 24 hours a day, seven days a week up to the day before the performance you wish to attend. Seats for mance

YOUR chance

is that MicroLink now rovides in— stant round-the-Z'lock information from the bible of

globetrotters,

the Interna—

tional Officia/Air/ines Guide. Known as OAG, it offers the very latest data from more than 750 airlines details of wor/djwide, .with

7Tll£17i'2.‘/Z;7LninfllrliZifscriberscan

has been

l

l

ment‘f’smlca The reason

be connected within seconds via sate/lite to the OAG computer in Oak Brook, Illinois, which monitors the 38,000 changes in fares which take place daily, and the 30,000 weekly schedule revisions.

Friday and Saturday perfor— mances must be booked at least two days in advance. Reservations will be con-

And GAG is a real money-saver because all the fares for each airline 0’7 any

firmed within

given route are “0933/17/59 from the lowest to the

on your mailbox an hour if you book

between 10am and 4.30pm, Monday to Friday. Tickets will be charged to your credit card and either posted to you on the same day or held at the box office of the appropriate theatre. Theatre Link is menu driven for maximum user— friendliness and also incor— porates a section giving all the latest show news and a breakdown of which theatres still have seats available for the curperformancesduring rent week.

to 10m MICI‘OLInk

h/ghest. The service also boasts an elapsed time feature WhiCh takes into account any stopover time during f/fghtS, thus enabling the passenger to 89/6“ the/ourney With the ShO?GSt possible duration. The OAGserviceiseasyto use.

/t

Wi// accept

fU/l

spellings Of airline 001193 Of and the user destinations, can 59/90? information either by single line entries 0’ by using prompts 0'7 the

system.

Page 39

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NEW York, New York, so good they named it twice! This is a debatable fact for those who have spent any time there, but one good thing to come from the Big Apple is Philon.|t's one of the most professional of the software houses currently writing for the ST.

.

I

| "

You can create floor plans, landscape design, architectural de— signs, or simply draw pretty pictures. The printed results are very good, with the, ability to print either a landscape picture or a portrait. Apart from owning a 13OXE and a SZOST, also admit to an IBM XT. Until recently the IBM was very useful because, in the course of my working week, need a very powerful relational database. DBase II did the until received a job excellently package from a company called Holmes and Duckworth. I

Two products have emerged from this company Henry's Fundamental Basic and Fast/Basic M.The former is an introductory language which can be used by first time users through to advanced Basic programmers. The package contains a whole host of built—in features but, more importantly, it is upwardly compatible with —

the second package. /

.

-'

QX'AXQ V”

Fast/Basic M is Microsoft MBasic

compatible, which means that pro— grams can be transported from other micros. The two packages representa strong opposition to the current Atari ST Basic and the price will not break the bank. Henry's Basic will retail for £49 and Fast/Basic M for £99, Philon also plan three more titles to add to the ST library Fast/C, priced at £125 and Fast/Fortran and FastCobol at £249. The graphics aspect of the ST is an exciting area for many people. The sheer resolution of the ST graphics handling makes the machine a must for creative people, Degas was the ?rst to illustrate the power of the machine’s graphic capabilities, and we are now starting to see more graphic packages arrive on the scene. Xlent Software has produced three, one of which, Typesetter, claims to be the perfect tool for layout and design. found it interesting in as much as you can load Degas pictures into the program and reduce or enlarge them and add text, At £39.95 it represents a good utility to use alongside Degas. Moving on to the real professional programs we find Easy-Draw from MiGraph which is truly excellent. if you have ever had the good fortune to see Gem Draw this package will

I

H

&

amaze you.

I

basically DBase ll,

but for the 520/104OST. You can even run DBase II files created on another machine without any alterations. lt retails for £99.99, and should turn out to be the software package of the year for the serious business user. For the 8‘blt Ata", Origin Systems has at |33t the long released awaited t° "" N°t sequel Ultima surprlsmglylt _

'5

to

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called

predeceSSOf S'des-

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retails for £39.95. If you read last month's column you might remember a company I told you about called Hippopotamus. Well, I have received another Hippo package for the ST called HippoCon— cept which is an outline and idea processor. Imagine you are preparing notes on a subject but do not havethe time to elaborate on those notes at the time you record them. When you come back to them, the program will allow you to elaborate and format them into an orderly manner, adding, deleting and editing as necessary. / <

x; IN

It is difficult to explain the full working details Of the program in 3 few words but, for the person who likes to put his or her ideas down on the spur Of the moment, and make sense Of them at a later date, this package Wt” certainly help. When it comes to arcade games and the like my interest begins to fail. On the other hand, do enjoy a game where you are not tied down to speed andjoystick ability. Word for Word is for me. Copyright and trademarks prevent the authors, Bay View Software, from calling it by the name do, and that is Scrabble. This is possibly the best version of the famous board game produced for any computer. don't need to say much more, apart from the fact that when used on the ST the mouse is invaluable. The price of the game in the UK will be £39.95. have just finished reading the American magazines Antic and Analog, and am pleased to say that the products reviewed in their latest issues are ones that Atari User covered some time ago! It is nice to find that a British magazine is more up-to-date on American products than the Americans themselves, and you can read Atari User for a third of the cost of our American cousins. Until the next time. I

\ _,

the packaging you will find the discs, a book on the history of the kingdom of Britannia, another on the Mystic Wisdom of the game and a very informative players reference guide. The nicest touch to the whole package is the map, which is printed in full colour on cloth and looks rather nice on my wall. It will doubtless be available within the next few months from US Gold, but do not expect all the refinements that come with the US version. The American Civil Waris the topic of SSI's latest contribution to the world of the strategist. Battle of Antietam for the 8—bit Atari is set in Maryland on the day the battle took place between Robert E. Lee and his army of North Virginia and the army of the Potomac lead by General George McClellan. The simulation is up to the usual SSI standards and Inside

a

EDWARD

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June 7986 ATARI USER

13


-

Class clasnc .

”affix.”

The

Pris; £395

Ta” 0, Beta

“assert“

£74.95(disc} Suppl/er: Databyte, Suite 37A Grove Terrace, Highgate Road, London NW5 IPL. Te/: 07 -482 7755

being further divided into subsectors. Your progress is marked byindicatorsatthetop of the screen. If you lose one of your lives by crashing into something solid or getting shotdown,you

A seat

g??ag'ggorba?n/Ianage' Supp/ianAddictive Games, 10 Albert Road, Bournemouth RH] 732, Tel: 0202 296404 As you have guessed,your role here is to manage a club of your choice. The job ahead is

to take your club from the Fourth Division to the First, and possibly win the FA Cup on the way. This is by no means easy because players get injured, you lose a few too many

and your gate receipts go down forcing you to takeoutaloan—with allthe 74 ATARI USER

June 7986

with

each passing

sector. The defence systems consist of two main elements. Firstly, there are obstacles

things as generators, scan— ners, antennae and mid—air barricades. Secondly there are the actively aggressive components such as alien vessels,

asteroidsanddifferenttypesof ground to air missiles —

rockets, lasers and plasma cannonballs.

Particularly nasty are the Backbiter missiles which, as their name suggests, fly up at an the angle towards unprotected rear of your ship. Yo u r sol e m ea n s of defence, apartfromagility, isa forward—firing, repeater

the

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cannon which is used to blast any obstacles and attackers that are destructible and not all are. If you are skilled enough to reach them, there are city settlements and the aliens' power generators within the complex. Your mission is to destroy these generators. The game allows up to four players and has six skill levels, Level being tough and 6 plain suicidal, so fast and numerous are the attackers and hazards. You may choose to have five or seven spaceships at your disposal. One unusual feature is that the caves and their contents appear to be randomly gen-

eventual victory that much more difficult. Not an original game by any means, and I missed the ability to bomb as well as shoot that other versions have included. Even so, this is the best Skramble clone I've seen on any micro.

Presentation, graphics, sound effects and music are all good quality, and with its random generator and range of options, the game should prove to be durable. The Tail Of Beta Lyrae is an

1

exciting and challenging

shoot—em-up that any fan of the genre would enjoy playing. A first-rate implementation of a classic arcade game.

Bob Chappell

erated during play, so the game is different each time you start up your spaceship. The drawback is that there is no way you can map the cave layouts, thus making

Sound8

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.

nagers' bench

ma

hazards of borrowing from the bank. The first thing you do IS select one of the current British Football Association league sides. Next you select a skill level, ranging from beginner to genius. All choices are made via the keyboard, so be prepared for lots of typing. Then on to the main screen where you sell or list your players, arrange a loan, or perhaps pay one back. Loans can range from £250,000 for a Fourth Division team to {21,000,000 if YOU make It to the top. Before every match you select your team. A careful .

voooochkf‘

which block your way but don't go out of their way to attack your ship. These consist of such

on

_

matches

grow

":-r'

=;ba1'

continue from the particular sector and sub-sector where the disaster occurred. Lose all of your lives, “1°“th and YOU are right baCk at the beginning of the complex again. Each sector gets progressively harder, with the caves ever more claustrophobic and twisty. Likewise the quantity, variety and perniciousness of the cave's defence systems

_

DESPITE its novel title, The Tail of Beta Lyrae turns out to be none other than a cloned version of Skramble, a game that first saw the dim light of an arcade about three or four years ago. Basically the game consists of flying a fighter Spacecraft through a series of caverns. The happenings on screen are displayed in standard two— cross-sectional dimensional, mode. Your view is from the side. The spaceship flys from left to right through the caves but can accelerate or decelerate, and can move up and down. The cave scenery scrolls smoothly to the left as you progress. The cave system is divided into a number of sectors, each

.

a-

evaluation

of

a

player's

skillwill be morale,'energyand

needed

ifyou want

to succeed.

After every match you are given your share of the gate receipts and shown the results other games played in your division, thus allowing a league table to be calculated. Fourteen matches later you are marked for your end of season league placement. If you are promoted you canlook forward to the start of a new of the

available on cassette. This is a shame as Atari so many owners have disc drlves now. Software houses should take note. On the positive side, there is a save game feature which means that you don't have to start from scratch every time you load. Football Manager isa good game in which you can really get involved.

Paul Irvine

season.

Football Manager is a fun game W'th only three faults. It is written in BasiC, so play is rather slow, there are no graphics, and it is only .

go'mdN/A raphrcs

Playability.. Valueformoney5 Overalls

Ill/A 7


Cavern capers joystick-breaking twists and

Program: Sidewinder

turns. Reaching the other and Of the cavern after what seemed a nerve shattering eternity I landed 0" the Dad- SUddenly this raised to an upper take—off point and had to fly back to the starting pad while avoiding new hazards. Eventually I completed the first level, and progressed to a more difficult cavern with stronger defences. You can replenish your ever—diminishing fuel supply by bombing fuel pods. There are five caverns, and the fuel pods become harder and harder to hit. If you manage to complete the fifth cave there is quiteasurprisein store, but I will leave that for

(cassette),

Price:4 59.9.5 .‘ _5 M's” Sufi pp/ler. Futureware, 743 Grays Inn Road, London wcrx sue. Tel: 07-359

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a well written arcade game where you have to pilot a helicopter through underground enemy installa— tions in search of kidnapped colleagues. As my helicopter appeared on the take—off pad the screen filled with laser beams, gravity

bombs and various

large

buildings and caverns. I took off and the screen scrolled from right to left, revealing even more traps and

Dan

.

Price: £9.95 f]4_94(disc)

Wike

m the

Suppl/enDatabyte, Suite37A, Grove Terrace, Highgate Road, London NW5 7PL. Tel: 07-482 7755iF YOU’Ve a taste for games that leave you red-eyed and that have you stiff—?ngered, saying for the 99th consecu— tive time, “|'|| just have one more go", that exert such an inexorable grip that you lose

track of time, then Boulderdash II is just your cup of insomnia.

Its predecessor, Boulderdash, was one of the most enjoyable, addictive games ever released, a computer classic no less. This follow—up, although it is pretty much the same mixture as before, is

every bit as riveting. You control a cute little figure called Rockford who blinks and taps his foot impatiently if you leave him idle. Rockford's task is to tunnel his way throughaseries of two—dimensional caves and collect as many jewels as he can.

Now while the plot may

you.

515

The program

,

tably. They will either fall straight down if unsupported or topple off underlying objects if there's nothing else to hold them in place. You'll soon master the laws of physics in Boulderdash but there still remains the need to

adopt

a

careful strategy if

you're to succeed. As well as the boulders,

roving butterflies fireflies

L5

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amoeba, and other obstacles

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while pleasant, are nothing to gasp about, the game has one ingredient that sets the whole thing alight and starts the old adrenalin coursing. In a word, boulders. Large boulders, embedded in various parts of the strata, are scatteredliberally through— out the cave system. What makes the game so much fun is that the boulders are prone to come crashing down with a noise like thunder. If Rockford's in the path ofa falling boulder, and doesn’t Shift smartly OUt ofthe way, he gets squished and loses one of his three lives. The boulders drop predic—

Sound

cavern.

orlglnallty department and although the graphics,

(cassette),

Paul Irvine

I

addictive

Program'Bou/derdash/l

screen editor which allows you to design your own caverns, saving them to disc or tape-

nowadays. found it very addictive, playing game after game to get on to the next

.

.

er

you to discover for yourselves. Sidewinder is great fun to play because it holds your attention, something that is missing from a lot of software

10

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and oddities see to it that you're kept on your toes. You control Rockford's movements with normal

joystick manipulation.

He leaves a tunnel behind him as he goes, and automatically collects any jewels he passes over.

When a certain number of jewels have been gathered, a secret exit appears, giving Rockford the chance to move on to the next cave. There are 16 new caves to traverse, each of which consists of several scrolling screens and has its OWN unique layout and set of problems. To increase the playing life of the game, each cave has five selectable difficulty levels; the greater the difficulty level, the more jewels you have to

--

.

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collect and the

less time you have to do it in. In addition, there are four non-obligatory intermissions to solve, giving you the chance to earn valuable bonus points. The program also thoughtfully provides the option of starting at caves A, E, I or M so you can get to see a lot of the game from the word go. The Rockford exploits are

classic numbingly

enslaved derdash

great fun and

addictive. Become — go buy Boul—

II.

Bob Chappell Sound

,

8

Gmpmcsg playability,_,_,__,_____,______,

1a

Overall

10

Valueformoney9

June 1986 ATAR/ USER

75


'

W earmg we I I... Program-ArcadeClassics

Price: £9.95

(cassette),

£14.95 (disc) Supplier: us Gold, Parkway Industrial Estate, Heneage Street, Birmingham B7 4LY Tel: 021-359 3020.

GAMES comloendiums seem to be all the rage at the moment. Arcade Classics is a collection of four fairly ancient Atari games bundled together on a single cassette or disc — Pole Position, Pac-Man, Mr 00! and Dig—Dug. At le a st t h re e w e re originally released on ROM

cartridges (whatever happened to cartridges?) so this cobwebbed collection exudes a strong whiff of nostalgia.

Nothing wrong with that, especially if the games are still fun to play. Pole Position is still one of the best motor racing games around and is a must for any Atari owner. The game gives you the chance to drive a racing carathair—raisingspeed around any of three different race tracks, competing against

other computer-controlled cars.

To enter

a race

proper, you

?rst have to complete a qualifylng race “mm" a time ”mit- HOW faSt YO“ qualify governs your position on the starting grid in the subsequent

Supplier: Mastertronic MAD Range, 540 Paul Street, London ECZA 4JH. Tel: 01-377 6880 THE Last V8 is one of the ?rst budget games to appear for the Atari computers and is a very interesting release too. During the Nuclear War you have stayed hidden in your base developing a super car — the V8. Now, in a desperate attempt to reach the remaintier of mankind, you come out into the open only to discover that there is an unexploded

nuclear

bomb with only left before it deto-

minutes nates. So you must drive to your base in the short time remainbut will you make it? ing —

16 ATARI USER

June 1986

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Options include selecting the course and number of laps, and having a practice race without other cars getting in

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your notice that when it comes to computer game plots, reality and logic invariably take back seat.

a

Dig—Dug was fairly popular in its time but this conversion

of

golden oldie fails to

a

sparkle. It is similar to, but nowhere near as good as, Mr

Do! It

graphically crude,

is

lacks variety of challenge and, worst of all, plays slowly. Dig-Dug compares badly

with

the game

memory,

l

1g

itself could almost be de-

today's standard of

releases.

The rest pretty well, though.

scribed asaloose combination of Pac—Man and Boulderdash.

hold

7

up

Bob Choppell '

You tunnel around a field digging for cherries, cakes, burgers and so on

while avoiding giant falling apples and fending off monsters with your Powerball. It will not have escaped

Sound

6

Graphics Playability. Value fume“,

8

7

..............9

Overall

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Elektraglide is Will find this game even more so. it isn't 5° much that you have a very short time in which toreturnto base, but more a matter of controlling the V8. Instead of a straightfonrvard up, down, left and right to control the car you have left, .

ccelerate

.

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load time from cassette, consistently refused to boot up successfully. Let’s hope that it was just my review copy at fault otherwise there could be a lot of frustrated buyers.

if you think difficult, you

a

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the fun. A simple game by current standards, yet still powerfully addictive. One of the few arcade conversions worthy of the title classic. Mr Dol, with a 15 minute

right.

_

,

.

which tell inlay instructions you how to control the car — it's wrong. For the record, the car accelerates automatically. Joystick forward switches you into high gear, backward into low while left and right move the car in that direction. To brake, press the fire button. An exhilarating game—fast movement, good use of sound and graphics and still one of my personal favourites. Pac—Man must surely be

puddings,

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jaw—snapping head and zoom around a simple maze, gobbling up dots while dodging pursuing ghosts. Special energy dots which allow you to turn the tables on the ghosts and the inclusion of several dif?culty levels add to

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it is very easy t° Skid Off the road at any speed, let alone the speeds that you have to travel at in order to reach the base in time. To add to your troubles YOU have a limited amount Of fuel and your radiation Shield gets

two:

the top half shows a bird's-eye view of your car as it travels along the road, and the bottom half shows your dashboard.

which lets itself down because it is extremely dif?cultto play. But at the asking price it is certainly a worthwhile chal— Ben Halligan lenge.

progressively weaker.

An ever-present onboard computertells you howfar it is

Saunda

On the positive side, the graphics are excellent and the scrolling is very smooth. The screen is divided into

to the base and how much time remains before the bomb goes off. The Last V8 is a good game

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M|KE ROWE tens hOW to Enhance cavern Escape then askifyou arehappywiththelock and key rooms as they are. Enter Y if you are or N if you want different rooms. If

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All the connections between the rooms are shown. The program will

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with varigble connectioill'lsbeteveen them. They are numbered from O to 99 startin in the to left c orn er running in ‘(lilorizontalroe/vs. The start is alwa s o and the end is always at 99.Theseycannotbe altered easily. The data for the exits of the rooms,thetype ofroom,itsnameand the difficulty factor are all stored in data statements in lines 2000 to 2099. The key and lock rooms are defined in lines 180 to 189. The Smaze creator program will allow ehsy design ofa new maze and automatically create a file which will merge and replace these lines in Cavern Escape. The program is easily used and largely self-explanatory. After it is run the screen will blank for a few seconds to read in a new character set. It will then create the current maze on the screen. The key rooms are in blue and the lock rooms are in

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THIS program was written for those of you who liked my Cavern Escape in last month'sAtari User. The problem with that game is that as soon as you have explored the maze of rooms, drawn a map and completed the game much of the enjoymenthas been removed. With Maze Creator you can now make a new maze using the same elements as in the original game. Conversely if the game is too difficult you can make the game easier to complete. Firstly will explain how the maze is made up. There are four basic room layouts built into the program. These

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for

1

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screen. You can cycle

through the four types available using the joystick. When you have the type you require

?liSPiaYhed extt e 32233 iCU Ithelbmiqn stlorei;tY eve is LO iSD aye Again alter this With the iOYStiCk and i

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4 are a ff ec ted numberthe higherthe greater the difficulty. After this the room being edited is placed to the right Of the map with the exits displayed Cycle thFOUQh the various combl— nations Of exits Uhtii one is the-deSlred found using the iOYStiCk and then press the bUttOhAfter this YOU are asked to type in the room title. if YOU iUSt press return the standard name for that type Of f°°m Wi" be used- This Wi" the" bring back the flashing cursor and YOU are ready to edit the next square. it YOU have finished editing iUSt Start. press This brings upa Prompt forefiiehame to send the data toif you are usinga cassette enter Ci, it disc type D:filename, for example and the

_

MAZE-LST- This Wiii DFOdUCe a i'Sted

file of the necessary lines of data to alter the original program. When this is completed load in the _

h—D June 7986 ATARI USER

17

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impossible maze or even a version which will not run at all. Afew golden rules will help prevent this:

10

0 Lock

and key rooms should not be placed on the same square under any circumstances. 0 Lock rooms always need an East exit and therefore cannot be placed on the right column of rooms on the

the room to the right of it must have a West exit. If not you willend up witha one-way door allowing movement in one direction only. This is used in the original maze to create five dead—end

map. Q The

0 A subway room needs exits in all four directions and this is auto— matically done. However this means you cannot have one of these at the edge of the map. hope this utility helps you get

program will usually stop you from making an exit which leads off the map as this is obviously impossible. 0 Remember to place corresponding exits and entrances in neighbouring rooms

so if

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22 ATARI USER June 7986

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of STEPHEN WILLIAMSON's player missile graphics

WE already knowthataplayerisa shape formed by pixels plotted within a player stripe. The normal method of designing a player is to draw the shape on graph paper and work out the data that is used by the player missile system to define that shape. To do this requires a little knowledge of binary maths. Stripped down to its bare essentials, a computer is not very intelligent. Its heart is an area which recognises whether a switch is turned off or on. In the case of the Atari there are eight switches or gates through which a small electrical current can pass. In the binary system, if a current is present this is represented by the number 1, and if there is no currentO is used. Because the Atari works on an eight gate system it is called an 8 bit machine. lts big brother the Atari ST uses a 16 bit system which is more powerful. When we design a player we have to work in a similar way. The width of the player stripe is eight pixels and within any row pixels can either be turned on (1) or turned off (0). is a diagram of the bug Figure encountered in last month's program. The shape occupies 11 rows within the player stripe. Each empty square in the diagram represents a section of the stripe where no pixel has been plotted, with the filled squares

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representing the plotted pixels that make up the bug shape. In each row of eight pixels there are various combinations of pixels that are either switched on or switched off. Figure also shows the binary representation I

of the shape. Although the Atari works at the binary level it will not directly accept binary input. In the early days of the first mainframe computers programmers wrote their programs in the binary system. But it was soon evident that the human mind, unlike computers, finds writing programs as a series of Os and is very tedious and the chances of making errors are high. Hence the need for computer languages machine code, Pascal, Cobol, good —

old Basic and so on.

Having designed the player using a binary—type system we have to convert all those Os and is into something that the Atari can under— stand. This is done by a process known as bit-mapping. In each row of the design, the combination of pixels that are off or on can be represented by a single number. To do this each pixel space within a row is assigned a numerical value. Starting from the last column on the right the first position is assigned a value of 1, the next column to the left 2 (double 1), the next column 4 (double 2) and so on until the left

hand column becomes 128 Figure I should make this clear. By adding up the values of all the plotted pixels in a row we arrive at a —

number that represents the pattern of pixels, or the bit pattern. If you look at the top row of the diagram, a pixel has been plotted in the 8 column and a pixel plotted in the 32 column. Adding these two together gives a value of 40 which is the numerical code that represents the pattern of pixels in this row. Using the bit—map system any combination of eight pixels that are on or off can be given a single number value from O—which equals no pixels plotted —to 255 when all the pixels in a row have been plotted (255: 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1). 255, which in binary maths is equivalent to current being present in all eight gates, is the maximum value that can be understood by the 8 bit system which is Why if you poke a value above 255 into any address you will get an error message. Of course in Basic we can use numbers larger than 255, but this is only because the Basic Interpreter breaks larger numbers up into two or more 8 bit numbers before passing them on to the processor. The diagram shows how the bug shape is coded into a series of bit-mapped numbers which can then be incorporated into data statements single

1

1


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5

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in a Basic

missile

the asterisk to be erased and the equivalent pixel in the player stripe

will

128

32

16

8

4

2

a

list

of the various options that are available to the operator. Key C changes the colour and brightness of the player. The system used is the same as that found in the Atari Reference Guide with a 16 colour and brightness palette 0 to 15 range from 0 to 14. Only even brightness numbers alter the brightness. lfan odd number is entered than the brightness value one below this number will be used by the system. After entering a brightness or colour value, press —

Return.

When satisfied with your design D gives a list of the bit—mapped numbers that represent the shape,and these can then be used in programs to create the same player shape again. If you are not satisfied with the design then E erases the

pressing

programs.

64

switched off.

be

At the bottom of the screen is

The designer plots a grid of dots eight wide by 20 high which represents an enlarged section of a player stripe. A cursor can be moved around this grid using a joystick. By pressing the fire button an asterisk will appear beneath the cursor and the equivalent pixel willbe plotted on the player stripe which has been set up to the right of the grid. Placing the cursor over an asterisk and pressing the fire button will cause

,

1

program to be read and

poked into the area of memory where the appropriate player stripe data is held. We will look at how this area is allocated next month. This bit—mapping process may seem a bit cumbersome. It is also difficult to visualise what the graph paper plotted shape will actually look like on the screen. Graph paper consists of squares whereas player missile pixelsare actuallyrectangular, so there is a problem in working out the correct ratio of height to width. But take heart, the computer is designed to take the strain out ofsuch tasks. This month's program is a player designer that works out the correct bit-mapped numbers. The designer will allow you to design and edit player shapes in such a way that you will see exactly how the shape will look when used in your player

shape and you can start again. Key M moves the player around the screen using the joystick. The player missile system supports up to

four players. The designer allows you to design more than one player. By placing a player next to another player a wider or taller shape can be designed. Although the designer only allows

F

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11

player up to

a

nations.

Another restriction of the overlap facility is that it only works with Player 0 overlapping with Player and Player 2 with Player 3. You cannot get a third colour by overlapping Player 0 with Player 2, or Player with Player 3 and so on. So remember to stick to theO and or2 1

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maximum of 20 pixels high this restriction can be overcome by placing one player directly above‘ another. The program will work out the number codes for each shape separately but these can be easily combined in your own programs for taller shapes. A two colour player can be designed by placing players over or near each other. In this way you could,for example,design a man with. a pink head using one player and the rest of him a different colour using another. Multicoloured designs are possible by using all four players. To further increase the option of multicoloured players pressing key 0 gives a third colour when two players overlap. This third colour is decided by the Atari. If, for example, you overlap a green player with a blue player the resultant third colour will be orange. Experiment with this option to see other colour combi-

Binary

1

5:

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!1

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Figure I: Bit map of a player June 7986 ATARI USER

23


combination. Pressing Key 0 off the overlap mode. switches again A player can be a single or double resolution player. All players must be in the same resolution, as due to a limitation within the player missile graphic system it is not possible to mix players of different resolutions. It and 3

may be possible

to overcome

this

limitation with the clever use of but this could only be interrupts done in machine code and is beyond —

the scope Of this series. Key S changes the size of the player on the horizontal plane. The player missile system has three size

options

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24 ATARI USER June 7986

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June 7986 ATARI USER

25


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You should find PAGE 6 at your local Atari specialist but if you subscribe, we’ll tell you about the special offers, disk library and much more available only to subscribers. £10.50

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V'

9

Re“

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go

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1

4

3

wave port

1

8

appear in binary form at and port 2 —bits

0 to 3

9

Joystick trigger

of current is required to milliamp it make operate. ,, 7 is to the pOSIconnected Pin tive Side the internal power 'of 's held supply, and constantly at +5Y' It W'" 500 lf or deliver milliamps ”1°” let It' bUt a speCify you. Atari maXImum current drain of 50mA, shared between the ports. If youtry to draw (“me you could end upwith anexpenswesmell,301ts a good to mid of idea semeform protection current—limiting into any Circuit that draws powerfrom this pin. A 50mA fuse is in quick—blow Peed the gadgets we W'” be describing. Pin 8 is the common Ov line. It connects to all the rest of the

.

'

.

1

state, Wh‘Ch.'s

enough to control'tranSIStors,thyristors, LEDs and integrated Circmt

g

devices. Some form

Of current and voltage amplification will normally be needed before these outputs can do useful work in the outside world, but with appropriate hardware you could control appliances the size of Tower Bridge. More about this next month.

at";misfits“;teatime: remains effective

the computer Cichitry prowcles CV pomt for Signal and trigger inputs. Pins 5 and 9 are analog inputs A ff.” variable can resistance belconnected

of how the four signal regardless

iig‘??;$2222?1f5328remp4223

.

.

.

.

as

+5v

ov

Paddle o (Ground) "1pm

and

.

an

ihput lines

resistance, converts it into

Ov by some external means, like a joystick. You can plug a switching device of your own to port 1,and read its output by PEEK STICK(O),orPEEK

(632). The pattern of highs and lows on the four signal lines is interpreted asa 4 bit binary number with Ov meaning on and +5v meaning off, so a number between 0 and 15 will be returned. It’s best if the transition from +5v to CV is rapid so sensors which a slowly produce changing output, like temperature-senSitive reSistors, are not really satisfactory. Devices that switch quickly like photodiodes or keyboard switches are suitable, so long as they can handle at least milliamp per line. The signal lines can easily be turned into output switches. POKE POKE 54016, 255 54018, 56 POKE 54018, 60 to set up both ports for output, then POKE a number between 0 and 255 into 54016. The

between

O. This opens the way for simple feedback—a motorised device driven

2331031322 Eh?"gutstgzéesultigto

by pins

1

to 4 could send

0 ,

1

1

(1 k or less) and

?fe; p inspcrontinzreto wpd'rlkas inputs even W h en t h e Signa l'ines are

stop signal

.

.

l

so

outputtizri;(1313: gemp'e"feedbaka Is or ire:ribgf?musse Issersgsss'enseors Pins to 4 can control motor 1

—___—"’

1

-

a

when it had finished opening a door or drawing the curtains. The pin could also be used as a fault line, triggering an alarm if anything went wrong with the hardware. As with the signal pins

.

a number 228 (500k

areTC?nfithiged.t 0 .“ h the gamer i': 553m;g?'frgma?g .

Figure /:Joystickparrpin—ours

an

your

4 to 7. ln output mode pins to4are held at +5v while are Off and fall to OV they when they on. They S_W't°h can'eac'h sink 15mA m the on

.

7

6

a

By LEN GOLD'NG

5

W’th

-

a mere

g?rgff'acigegiz fégzkicascousticnumber will 2513232 bits

All these are driven by software written in Basic or by simple USR-Ievel machine code routines. All the gadgets work through the joystick ports and this month we will explore the various signals you can put in and get out Figure shows the pin functions. Pins to 4 are the main on or off lines and they are normally signal held at +5v by internal circuiw A signal occurs when thelineistaken to

l

antral lt

THIS series will be all about hardware you can make for your 400/800/XL/XE. We’ll be describing devices to manage your central heating, water your house plants, control your train set or operate your burglar alarms. We’ll also look at remote key— boards customised for children, disabled people or ham-fisted ama—

G reen

01

Yellow

02 03 04 05 06

Orange Red Brown Blue

o 0 0 0 0

0 o

w

glack rev

l

“White—l

-

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0 ° 0

g

g

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Figure/l:Practical/ayout June 7986 ATARI USER

27


—Gadgets

—————

on/off lines, while variable resistors connected to pins 5 and 9 monitor the degree of rotation in two dimensmns. The analog inputs can also be used for devices which produce a slowly changing voltage. How about a photocell to set a burglar—deterrent program running when it gets dark? Or sensors to control temperatures and exposure times in your dark— room? Or a humidity monitor for the conservatory? Or a transducer that will react to sound? It’s all possible without too much knowledge of electronics. Here 3 a Simple light—sensmve gadget to get you started. You erI need the materials shown in the parts list. First testthe extension lead using Joysticks and paddles in the usual way. |f all is well unplug it, cutoff the end you don't need and carefully strip about %in of insulation from each of the nine wires. Screw the terminal block to the baseboard and attach the wires as in Figure II.The colours shown are those used in the Tandy extension lead other makes may be different. .

.

.

.

threshold value. A Similar gadget can also be used to help train hand coordination in severely disabled children who have little control over body movement. Random waving will have no effect, bUt careful 903050"an Of the hand can be made to produce some form of

Now fit the cadmium sulphide cell on the terminal block as shown, check that all the screw terminals are tight and then plug the gadget into port 1. Run this program: 1° P0“

752'1’PRI”

awn“)

zo POSITION 2.2:PRIN1‘ 30 001°

PEEK(62!I):"

"

reward. 0 Next month well exp/am hOW to use the four signal lines as output switches and how you can get them to control high power appliances.

20

.

'

Initially the displayed number w1ll low—probably less than 10—but if you now cover the cell with your hand the number wnll rise rapidly to 50 or more. Try this: be

10

souuo

o.PEEK(6zu).1o.1o.8:

_

GOTo 10

-

lead (Tandy

27249783Xtension or Similar).

Cad

and You

get a light—activated swanee WhlStle guaranteed to delight even the youngest members of the family. Shopkeepers could use this device to make their wmdow displays more alluring. Fit extension leads to the cell and tape it inside the window so that passers-by can cover it with their hands. Then write appropriate software to generate something interesting on theTVscreen when the number in 624 exceeds your

Parts list

J 0 she k

.

.

SUlphlde cell—ORP12 or uimllum (Maphn tYpe HBiOL, Tgndvazent. or similar). 7.6‘116A 50m); ClUlck blow fuse and holder. 12 5 Moulded terminal amp blo viay(Maplln HFOl B, Tandy 61 30 09 0r from most electrica| sh e

.

Bails?

(about 6in x 125” or 15mm ply). Total co st amu?d £6.50.

PreferaZTrd Y 12mm

Cannock Road, Chadsmoor, Cannock, Staffs W911 2DD. Tel: (05435) 79099

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520 STM Computer w1th 500k Dlsk .

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520 STM Computer with 500k Disk Drive and Medium Resolution

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520 STM ComputerWIth l MBYTE Dlsk Drlve and ngh Res

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£997.00

TCL 5 1040 STF with built in 1 MBYTE Disk Drive and High Resolution

Monochrome Monitor

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£918.00

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FAST FRIENDLY SERVICE

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below £10.00 add £1.50 below £50.00 add £2.50 below £100.00 add £3.50 over £100.00 add £8.00 All prices include VAT at 15% ‘No Hidden ExtraS’ Access/Wsa Card Holders:

Items Items Items Items

1

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22-38 '

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£199.00

223.8;

23:22:12 glisloomzso Seikosha GP 500 Shinwa CP80 multi-strike cpso fabric

Eggs £495 £5.50 £516

01-571 5938 or 574 5271 ' '

correct at time of All-Prices 90m ' to l ress

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Pleaseaddthefollowingemoumsfor Postage and Packing.

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8KU6" énltcrcigrag 3 a 30/938? U n'k e .' 5 fabric

list your of

"mm" despahcll you 24 hours. sublect to availability-

£450

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£6285

MP165

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You may purchase any of the items by cheque made payable to TWILLSTAR COMPUTERS LTD-

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51-95 £3.05 £4.10

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£450

Epson FX/MX/RX80 Epson LX80 Epson MX100 Epson L01500 Epson DX multl-strlke Epson DX 100 fabric Juki 6100 JUki 5100 single-stri mulit-strik'e e Juki 6300 multi-strike Jukl 6300 fabric _

£229.00 £189.00

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PW “55A Brother EP 44 Shinwa CP 80A

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Cam" Cam"

range of BaCked

the ST" f-°' ln-house

Department.

£173 00 £173.00 £155.00 £21100

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Seikosha 1000A (NLQ) PW 1080“ (MO)

All TCL Packages come complete with all interconnecting cables and are supplied with ST Basic, ST Logo, and 1st Word

Spares bu our

£95“

Brother m1009 Brother HR 15/25 Multi-strike Brother HR 15/25 fabric

£333.88 5323: E§ $80F/T £369.00 Epson FX 85 Seikosha GP 50A (Parallel) £69.00 Seikosha GP 503 inc. Printer I/F + cables £69.00

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comprehensive

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and optional tractor adaptor and sheet feeder. This printer has a standard parallel connection and accepts all other Epson serial Pare||e| boards with external dip switches for eas access and internal |K bung! it offers a high specification at a low price. £229.00

520 STM Computer_Wlth1 MBYTE Dlsk Drlve and MediumResolution

Colour Monitor _

use PRINTER

14°

EPSON LX80 mm 100 CPS draft and 16 CPS

£747.00

TCL 4

11620LS$F Wlth bu1lt ln

MSPIO

and standard centronics ribbgn inte ace. £195.00 Also available KAGA KP 910 (wide carriage printer) £379.00

TCL 3

315elRhVICES ave a

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“430°

1349Mgt12iu4mResolution Colour Monitor £399.00 Printer Lead for ST Series £12.00

£114'oo

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HR

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KP810 °°'“""l winter with

Resolutlon

FEEDER

CPS Draft and NLO with friction and tractor feed offering 9 lNT character sets. Long life cartridge

5

1

£947.00

Monochrome Monitor _

3mm”

£849.00

.

M°"°°hf°me M°""°f

£3383

22,33

£199.00

20 MBYTE Hard D'Sk

390124 12 ngh

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Quendata DWP 1120

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TCL 2

.

This newcitizen lzoowlth 120 CPS and 25 CPS NLQ °°mes With tractor and friction feed as standard. IBM and Epson Compatible with TWO years £159.00 Warranty

MBYTE Disk Drive -

£33.00 £23 W

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£44030

FXSO

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Colour Monitor _

Canon PJ1080A

£149.00

SH207

TRACTOR ADAPTERS

The new cltlzen MSPIO w1th 16 CPS

.

500k Disk Drive

s|=314

PRINTERS

COLOUR

CITIZEN 120 D

Cl-HZEN

SF354

compatible with the QUME. Standard centronics interface. (optional R3232 C) £139.00

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?egtaoaniigiaintcirgaggtglnge?switch lfyou need colourtoo,theoptional Jukl 5510 Colour Klt glves you seven colours. £112.00

73

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DWP 1120 QlJENDATA Wlth optlonal tractor/sheet feeder and 13" paper with facility. This Dais heel rinter with 20 CPS has ggvcharagter printwheel

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DAISYWHEEL PRINTERS

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£5.30 £5.46 £5.90

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£269.00 Inc. VAT ...and thats not all!. The Jukl 5510 two also has mods, ing posnlon fcljjlll graphgcsprovi lp-switc instsnt compatibilitywith both the Epsom and the IBM Graphic Printer). Standard 2K memory (expandableto 14K) built-in Parallel

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£219,110

£229.00 £349.00 £285.00

grother uki 6100

Juki 5510 - Gives you 180 NLo Standards

Walters WM80 multi-strike Walters WM80 fabric

£240.00

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Tmllstar Computers Limited .

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Wings. Now admittedly in an industry where truth is as rare a commodity as poverty in Dynasty, one tends to learn to treat such tales with a degree of caution. After all, computer corporations make the maximum use of hype to keep their rivals as paranoid as possible. They may not actually persuade them to jump out of sixth floor windows but they keep them eyeing the led e as often as possible. So what is ggoing on? Well when it comes to finding out about new machines which have cost millions of pounds to develop, there is little point in asking the caretaker — or even most senior executives for that matter. After all, as was so often pointed out during the Second World War — Careless Talk Costs Lives. In this instance the working "lives" of those who leak information to their mates in the media without the necessary sanction from above. So the only way you can be sure of getting to know what really is happening without sacrificing your informants along the way is to go to the top. And when it comes to Atari you can't go higher than the Tramiel clan. In this case, it was Sam Tramiel, the president, whom sought out to find out if there was any substance to the reports of new machines in the pipeline. "Yes", he admitted. “It's quite true. The one megabyte is just the start. The next one along will be the two megabyte _ the ZOBOST then a four megabyte version". But how much technology do oeoo|e actually want? "Just as much as you can possibly give them", says Sam. "It's like owning an automobile. You may not always need that extra power but it's nice to have it there if you do _

.

_

* * * TALKING of Sam Tramiel, the Atari president confesses that he is ”computer illiterate". He insists that while he knows how to build them and price them, when it comes to making them work he's an idiot user. While he was employed by Commodore he readily admits he could not get to grips with the bestselling 64. ”/ simply could not use it", he says. However in the case of the ST the machine has proved to be a breakthrough, not only for the company, but for Sam Tramiel himself. "With the ST, I just push a few buttons and it “418”.th

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IT seems that the 104OST is only the beginning folks. The ballyhoo surrounding the launch of the one megabyte machine had scarcely died down when rumours began to circulate of even more . -

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* * * SURVEY has shown that 't can coat up to $50,909 to develop a for the ST. This titbit software program A

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dropped by S?g, Hartmann, Ate” 5 software supremo, when he y'e'ted the PK recently. So then With as this, I ventured why costs as high 1° me "15's" for ask, the C9mpanv, that'developers pay their machines in the We a first place?_ saw thisuas °f the" he demonstrating way them commitment replied h proved t° “e that they had fa'th 'h the and Tramiel. Jack machine l” we had Wet handed over the machines, there no guarantee they would have got around to was Wht'hg any software any “FY"went °" to point 0“ that Ate” W'" 9° to Hartmann conSiderable lengths to help developers for the ST range. Over. in the States software houses are invited to send their writers along to Atari's headquarters to spend a week picking the brains of the corporation's experts. ”Unfortunatelythe cost of such a venture UK companies tak'"9 advantage would preclude ef ‘h'5 I' says "Unless they want to pay the" Hartmann. own expenses that is. “Mind you, the quality of the software being produced in Britain forthe ST is still just as good, if not better, than anywhere else in the world". Hartmann and his team expect to continue working round the clock for some time to come to ensure there is a constantly expanding software base for the ST range. “if l don't come up with the goods i won't be in the job for long", he says. Just before he flew back to the USA Hartmann pledged that whatever new machines were introduced they would be compatible with the existing software range. “After all, I've got enough grey hairs from this project that there's no way we’d want to start off from square one again", he said. was

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A professronal quality macro assemblerwrth useful features for the serious many

program-

Standard Motorola 68000_ mnemonics. Macro expansrons. Over 160 explicrt error messages. Fully formatted listings. Large range of directives. Includes a debugger. The macro mer.

assembler chosen by Commodore for the

£19.95 ON ITS OWN FREEWITH ANY METACOMCO LANGUAGE“ MENU + provides ST users with a friendly environment to control their programs, using pull-downmenus and the mouse. Easy-to-use. Runs single programs or batches, avoids repetitive command line entry. The user can add his own tools, argumentsand options. Runs any programs not rust Metacomcoproducts. -

Amiga.

PM”

ALL MEfAcamca PROGRAMMING

PA (57M 1

LANGUAGES FOR THE ST HA VE THESEADVANTAGES-

539-95 ,

powerful Pascat compiler that meets the exaCt'ng ISO 7185 Standard (|8V8| 0)' A fast Single pass compiler, generatmg native COdB. Comprehensive error hand|ing_ 32 bit |EEE format floating pOIDt anthmettc and fun 32 blt integers. Chosen by Commodorefor the Amiga.

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INTEGRATED RANGE or LANGUAGES ONTHESTAND OTHER

mggggmco's rangeoflanguagesforfheSTprovidesan

integrated and consistent programming environment for ST programmers. Assembler or C can all be Program modules written in l'nked to ether. Met 0 o’ Psascal, Tlan a esae om t'ble with

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OLMglkegiteasrytg poetaylourprotlheirlanguagesfor?migacansd Metacomco. >

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599-95 The well known Lattice

grams by choosrng FULL GEMDOS LIBRARIES (Source code provrded) All Metacomco languages come with a set of GEMDOS libraries, making iteasyto program the graphics and the otherfeatures ofthe ST. Full source code ofalIGEMDOS libraries is provided, allowing to modify them. The source code is well programmers

compiler. A full

Kernighan and Ritchie implementation.Comprehensrve “Names Of UN|X and utlllty

functions CompatibleWith Lattice compilerson IBM-PC, CommodoreAmiga, 0L etc. Full IEEE formatfloating point arithmetic. POWOITU| data

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types including pornters, arrays, structures, unions, register variables etc; macros, CODdi' tionai compilationand other pro-processors.

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As‘cREEr’ifErnTon d”or f or preparing evgeywlemguzcgreeene

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DETAILED MANUAL Every Metacomco language comes With its own detailed manual. .

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‘E"s""titfstarreeesattartarmastersMfr“ 26 PORTLAND SQUARE, BRISTOL BS2 8RZ, UK. TELEPHONE: BRISTOL (0272) 428781

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5353E Scotts Valley Drive, California 95066, USA. Tel: 1-800-252- 6382 Lattice

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PASCAL

MORE INFORMATION

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forward and rotate left or right. The computer keeps track of your direction and displays your present view as well as the other possible directions you can move in. It also presents you with a map of the area you have so far covered. It may sound a doddle, but as you'd expect there is a catch. The Robo—Droids are harmless looking they appear on the map as slightly shaded spots but devious fellows who will track you round the maze in a concerted bid to foil your escape. Needless to say they are not fooled by junctions, dead ends and so on, and will quickly backtrack if they feel they are losing your trail. initially only one robot hounds you and it is easily outwitted, but progress to the second level means you have to contend with two of them, and so on. Your enemies steadily become more cunning, fitting themselves with interference mechanisms so they do not appear on the map. At first the robots only move when you move forward, but in the later stages they move even when you turn round.There are a maximum of six and all have different tendencies, so they never end up all moving to the same place at any one

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conjunction with structured subroutine handling

the program can easily be debugged. Since the program is quite long the desk utilities on the TOS disc must be renamed to free some memory unless you use a ROM system. This is done by sliding the TOS disc write-protector and typing in Basic: NAME DESKl. ACC AS DESKl. AAA. The program should be saved on a spare disc. Entering the program in the edit window is easier than in the command window and the HEM statements can be omitted. M

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001.1111

5555

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5115121,111111+11=115111v111515151

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11

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11115

111155111,u11,u115,111.111.11155u1+11,u11,u1+11,111115

11115

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495!

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111.15.u1115.u1,u11151111155

486!

RE" 11 DR!“

4955

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UL,UL108.UL.UL11FILL

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ON

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55

1.1115

1111111

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11

512,155,557.155.5:17,155,517.75,517.75,545.75,515,75,525,55 15515 111111 525,55,555,75.555,75,512,75.512,75,512,155 15525 511111 475,155,475,57,475,57.495.57,495,57.195.55.195.55,175.55 15335 11515 475,55,575,55|475,55,455,75,555,75,475,m 15545 575,155,595.75,595.75,575.55,575,55.575,55,575.55.555.55 1555. mm 555,55,555,s7,555'g7'575,s7,57537575,15. 115" mu Iorth,Eist,South,Hest

"

65l+1R11L1|81,1641(R1(L11158),31REYURI1 UPDATE PLAVM LEVEL "

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11511

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15

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55

111“ MA 225‘75,5|,5|'z||,125,1n,75,225,15|,55,125 11115 215,275,115.15,295.255.-55,-15.275,155,-55.125 11125 11415 255,255,-25,75.215,115,45,5,275.115.-45,-5.155.255.-155,-75 11135 111111 245,115,5,15,215,95.-5,-15,255.115,5,15.255.95.-5,-15,275.75.-55.55

THEN

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in

the

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This program is designed to run in the monochrome hi—res mode. it will need extensive modi?cation to run on a colour monitor or a TV.

From as little as

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Atari ST DIRECT FROM THE UK’s SOLE DISTRIBUTOR The MEGAMAX C is probably the best C development system available for the ATARI 520 ST. Already voted as the best C system for the APPLE Macintosh, the new ATARI package is even better, packed with even more features and now available at a very realistic price tag of just £137 (ex VAT). complete development system, not just the compiler and common IN/OUT library. Take the Graphical Shell for example. MEGAMAX fully supports all GEM routines (AES, VDI and DOS) I

This package

is a

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Increases speed of correcting, altering and re-running programs by up to SIX times compared to other C development systems. l

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ADVANCED SYSTEMS AND TECHNIQUES LTD. 87 BOURNEMOUTH PARK ROAD SOUTHEND ON SEA ESSEX SS2 5JJ 1986 Atari ST User———-—————-——-—


Desk

Score

Play

Game

options

"€£~'€:::'_:i%f-:_:_~:--;:.::;

'

1

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3;g:r.:t;g;g:37,5:s::::’;z;.::;z:t:.i;.:'::3;: '

Scrabble

511.151“

5»;:‘:.:.:.:.trig....:.::§..:

F

Road, Alum Rock, Birmingham 88. Tel: 027-328 3585.

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WORD For Word from Bay View is a good computer version of Scrabble. It can be pIaVEd by up to four people, or three people and the computer. It uses the mouse for many of the commands, especially to point to the board, to show where the word is placed. Why would you buy a computer Scrabble game? Besides being a good fun game, you might wish to test your wits against the computer or to increase your vocabulary.Thirdly it is often difficult to find a player at your level. Word For Word helps in all these categories, and offers a better reason for buying it—you can design your own board. The game uses the normal scrabble board, with squares that double or triple the value of letters, and other that will double or triple the value of words. There are also bonus squares thatincrease the va|ue of a letter by a ?xed amount. There are sample boards with different designs that can be used, as well as a board that you design yourself. The computer plays at three levels beginner, intermediate and advanced.The computer thinks out loud and you can see the words and the placement of the words on the board as it

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At the beginner level it can be beaten easily. At intermediate it plays well and at advanced level, its play is very impressive indeed. Just like in the board game, you can challenge your opponent about the validity of his words. The computer has a 50k dictionary built into the system. However it cheats. Every so often in the advanced level it will throw in a bogus word. don't think this is an error on the part of the programmer, but a deliberate feature to keep human players on their toes. You too can make up words, and when the computer challenges your effort, explain that you have looked up the word in a dictionary. You do this by clicking the Correct box but it takes a pretty low type to cheat a dumb computer! Final feature of this game is the ability to design and save your own board and letter values. It is easy to do this using the mouse. This feature makes the game much more fun. I

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always thOUth that it was unfair to have OhiY X and now can regularly play with 12 Xs. This makes for a much higher scoring game. You can also vary all the letter frequencies as well as the letter values. in the standard game YOU play USihQ six tiles bUt it is easy to change one

l

this to seven or more.

With blank squares and iOtS Of triple W0de high values for exotic letters, the whole character of the game is changed. The package comes With a comprehensive manual bUt this is hardly needed as the program is 50 easy to use With its drop down menus. Play is quick and exciting and uses the ST’s capabilities WGii- The mouse is U59d to 900d advantage,both in the manipulation of the letters and POihtihg to the SPOT where they ShOUid 90Sol Guber and

cogitates.

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Program: Word for Word Price.£~39 95 Supplier: Software Express, 514—516Alum Rock

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Program: Treasure/sland

Pficef 539-95 SUPP/is” Windham C/aSSiCS

THlS adventure game, based on the classic Stevenson novel, is designed for the younger adventurer, say aged about 8 to 15. it uses the 16 colour, 40 column mode and all the major characters are brought to life through pictures. The puzzles are not difficult, little humour is involved and the parser is of average quality. My eight-year-old daughter certainly likes Treasure island. The graphics are not great, but

.

_


then she says that it would distract her if the pictures were bigger and there would be less writing on the screen. She likes the idea of having a scene and a picture of the person to whom she is talking, and also appreciates the list of the vocabulary words supplied in the package. There is also a command called Words which lists the appropriate words for each scene. A great deal of help is on offer during the early stages of the game. It is very easy to perform the correct actions when the computer prompts you that Bones is getting thirsty and wants something to drink. Also appreciated was the fact that there is no scoring in the game, and when there is an object that is really needed later in the game, you cannot leave its vicinity without picking it up. This facility would have been useful in Hitchhiker's Guide, as never thought of picking up the fluff. When you type Saveyou can save at any of 10 positions. When you specify the position,you can also specify a 30 letter message to remind you next time of what was saved. My daughter took about 45 minutes to leave the tavern and get on to the ship. She was only killed once during the first chapter of the book, and it was her own fault, because the computer

told her that there were loud noises coming from the parlour and she went to investigate. Each piece of the puzzle in retrospect was logical and seemed fair. She got lost on the path to Bristol, but the computer helped her find her way. She thought the music that was being played was good and appropriate. It also quieted down to let her read the text. The next day she wanted to spend another hour on the Hispaniola. The lack of really good graphics was more bothersome now, and she complained that the game seemed harder. Having read the book, she knows what to do

and what to expect, but this isn’t a real advantage. would give this game a B for effort and execution. The adventure is interesting and playable.The Word Window feature helps you to get through the puzzles and find the treasure. But it really hasn't used many of the ST's facilities. There is too much disc accessing during the game, even though the pictures are not full screen. The pictures could be drawn in much more detail, and the sound capabilities utilised I

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1

A1rQ Q U @§<§ Q >

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Complete and mall subscription

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meune

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more.

However it is a good first effort adventurers will enjoy it.

and

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Sol Guber

ATARI 400/600/800/Xl/XE ummes AND GAMES HOWFEN DOS A to

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AUTOMENU press Also

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SMART ART (1 6k) seas“5.3.9.1Fz?sEeNeiuga’Lgde?sseitssemester: 'eEl?i’é’ééEl2$L§e58QXhF2°J€SS3.5?GBEP'WRE' ONLY 23.50 ALSO AVAILABLE BLACKJACK(16K) Realistic card display £1.95 PlCTUFlE PUZZLE(32K) Two picturesto choosefrom PICTURE TORMENT(16K) Very difficult FRUIT SALAD(16K)Colourfulversion ofmastermind g

FRUIT PICKlN(16K)Arcadeactlon.........................................................£2.95

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£2.95 £2.95 £2.95


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power POtentlal Of the ST range Of computers ls causing a "00d Of new SO?WaI’e “?es. Pellpher?IS ENG 300938ories from third party manufacturers. Titles range from word processing to spreadsheet programs, from graphics and games to database management a" with those easy dropoown menus and windows. war] the "St 01 companies producmg ST software men‘dmg dozens Of top namesv you 0?" expect some titles for the new ST fa"ge~ The following lnClUdes a seIeCtlon OI the third party manufacturers who have developed, or are work— ing on, products for the ST range: melts EXTENDEDS/iri MICRO-EDINC ROBIIISON srs The

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HAVING already takenalook at two of the available graphics packages for the ST, Degas and Neochrome, we shall now start to use them. The techniques used when drawing on a computer screen are quite differentfrom those of drawing on paper, although the similarity is increasing as the hardware improves. have drawn with keyboards, joysticks, trackballs, light—pens, touch tablets and the ST mouse, and find that the mouse is my favourite, with the touch tablet coming a close second. The light pen would seem to be the closest as the name thing to drawing with a pen hand but up to the holding your suggests monitor screen tires your shoulder and makes it difficult both to control the pen and to concentrate. With the ST and mouse we are as close to the physical act of drawing as we are I

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The first thing to consider when painting with your micro is the range of colours you intend to use. At the moment the ST gives a choice of 16 colours from a palette of 512 in the lowest resolution. To make the choice you obviously need to have a good idea of what you want to draw. Every object in the picture will need certain colours defined. It is a good idea to aim for at least three shadesofeach colourforshadows.To produce darker shades ofthe same coloursimply reduce the red, green and blue values by one until they near zero. Always experiment, though, because some— times a little more red or blue in shadow colours can look good. Professional artists rarely use black in their paintings because they claim that it

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Degas and then use the Neo slide show and used this animation to animation facilities. I

make the candles ?icker on the demon shown last issue and for the impossible waterfall.

To achieve this illusion of movement you should set aside at least three colours to cycle through to allow the eye to discern a direction of motion. With just two colours movement could be in either direction and the illusion does not used eight work. In the waterfall picture different blues to create a smooth flow which does not noticeably repeat itself. A useful time saver in Neo is to use the line command with the right-hand mouse button. Neo then draws the line using the colours between the animation arrows. Each colour is used only once and the number of pixels it covers is calculated as an average. did not use the line draw routine with the waterfall since it would have given the water too regular an appearance, and also wanted the water to appear to flow faster in the centre than it I

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the edges. To create this effect used each colour over more pixels in the centre of the flow than at the edges. A useful tip to remember when planning your colour scheme is well demonstrated on the bouncing ball demos, now running on several micros. The ball seems to stand proud of the background, yet there is no perspective to the image, only colour differences. So how does the illusion work? The spectrum, as we all know, ranges from red to blue. At the red end of the spectrum are the warm colours and at the blue end the cold colours. On a painting warm colours always seem to be in front of cold ones and this effect is especially noticeable on most computers where, with the honourable exception oftheAtari range, there are only very vivid colours to choose from. The bouncing ball stands out so well because it is bright red in front of a background of blues. When starting a picture use a single pixel brush and the K—line option to block in the composition. However if there is a symmetrical object of any appreciable size set up the mirror option and draw that first. Once the object is drawn it can be moved into its proper position with the excellent copy or move features built into Degas. If you want to use mirror to draw a shape, but you only want a single pixel centre line, put the program into slow draw mode and block copy half of the finished image one pixel aside. One of the features would have liked to see in Degas is the ability to draw an exact square. As things stand you have to judge whether you are faced with a square or a rectangle. Actually it is simple to calculate. First draw a line at 45 degrees, in other words one pixel up for each did at

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and one blue.

This effect is useful for painting skies or A point to remember about the sky is that it is always paler on the horizon than overhead. Look out of your window. A more familiar way of depicting depth in a flat image than that of warm and cold colours is perspective drawing. This is too complicated to go into here in any great detail, but one useful way to work out accurate perspective in a picture is to draw the horizon, choose a vanishing point, and the use “rays"to draw the perspective lines. Another way, which leaves less messy construction over your picture, is to use line from the vanishing point to draw the perspective lines and then cancel the instruction with the right hand mouse button, leaving the cursor on the calculated pixel. The same formula can be used to calculate shadows. Choose a point on your picture to be sunsets.

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distance causes things to look darker. A perspective grid can really benefit from this technique since the lines of the grid appear narrower in the distance than the foreground. Human anatomy is a common source of trouble for artists. it used to be said that the hardest thing in the world to draw is the human face, followed by the hands and then the body, and that if you could master these things you could draw anything. Whether this is true or not a study of anatomy is very worthwhile, but again it is too much for this article to go into. However there are a few formulae which generalise the human form, and which can help. There are seven and a half heads to a human being. The shoulders are two heads wide and the see Figure ii. The hand is half of a face across face divides into three equal parts from the top of the forehead to the eyebrows, from the eyebrows to the end of the nose and from the see Figure in. nose to the chin Don't forget that you can often do other things with your pictures once you've drawn them. bought a copy of Colourspace at the Atari User Show and when got it home discovered some useful features which had not seen advertised. As well as a ”light synthesiser" Colourspace is also a Neo-chrome picture processor. You can load two pictures at once into memory, one as a foreground and the other as the background, merge them together, squeeze them to one side or to the top of the screen, reducethem to a quarter size, reflect them side to side or top to bottom and define a distorted plain on which to print the picture. Your picture can then be saved out again. A feature really like is that Colourspace extends the Neo—chrome animation feature so you can now have two sets of rotating colours going at once, and the speeds and directions of rotation can be different for each. loaded up my demon picture, set up a star scroll coming out of the screen, moved the origin of the scroll into the demon's mouth and set up gravity. it then looks as if the creature is spitting out fire. This program is a terrific graphic tool as well as a great way to relax.

of the objects on screen, to the ground and then join up the dots see Figure 1. Another form of perspective is aerial perspective. if you look at a landscapestretching into the distance you'll notice that the further away an object is, the paler its colour. The best example of this is a photograph of a mountain range poking through a veil of mist the peaks seem to be fainter the further they are from you. What happens is that the dust in the air between the viewer and the mountains is reflecting the colour of thesky and this acts like a ?lter. The result is that if the sky is light, objects in the distance are lighter, but if the sky is dark, —

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The Atari 10408TF employs state of the art 16/32 bit technology. Yet its price is unbeatable. The ST range of computers already has a large number of software programmes available, includingword processors, spreadsheetsand databases,as well as a variety of programming languagesand specialist businesspackages. The 104OSTFwill also run software written on several other popular operating systems, includingCP/ M. It has a 1024K Ram, integral 1Mb (unformatted) double—sided 31/2” disk drive, two—buttonmouse and built—in power supply.

The operating system is in Rom, leaving Ram free for applications. Basic and Logo programming languagescomplete the package. With 12" monochrome monitor, we recommend it sells for £799 excluding VAT saving you at least £1600 against its nearest rival. The price of our 14" colour system is a remarkably low £999 excluding VAT. As the American magazine ‘Byte’ commented, “for some time to come the 104OSTFwill be the clear leader in price/ performance.” For the name of your nearest dealer, ring Teledata on 01—200 0200. .

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THE RE were times when I could have eaten the carpet, far less chewed it, when doing some C compilations recently, and for several reasons. Firstly my disc—based TOS was an early version that bombed every half—hour or so this doesn't happen with version 19, the final one. Secondly only had a one double-sided drive and the TOS didn’t leave room for a RAM disc of the size needed. Even if laid hands on a knew ROMmed TOS would still have difficulties with the 400k+ of files that wanted —

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The only answer was more memory, and although there are now proprietary add—on boards for the ST, chose a way of doing this by adding an extra 512k bank of RAM which was passed around the US micro networks recently by Gert Slavenberg, who included C source code for setting up a RAMdisc. It cost me £62 and these are my experiences with the memory addition... It is scary, and opening up your ST will void the guarantee unless it is done by your dealer he foots the bill when it comes to guarantees anyway. My 5208T was three months old when did it, but reckon that if a fault hasn't surfaced on a micro in the first week you're unlikely to get any except from old age, and all micros are obsolete long before then. Don't attempt it unless you've successfully done some soldering on fine printed circuit boards. Otherwise it is absolutely straightfor— ward and should only take a couple of hours. You'll need a soldering iron fine enough to solder individual legs of an IC without making solder bridges to adjacent legs, a solder sucker for removing components from the board, a yard and a halfofthin insulated hookup wire and lastly 16 256k 150nsec DRAMs used NEC chips like the ones already in the ST. These RAM chips are the major cost of the modification and if you shop around you may get them for £3 a thrOW. With the door locked, a clean table top to hand and the soldering iron warming up, begin by switching offthe ST and removing all leads.Turn it over and use a Philips cross-headed screwdriver to remove three long screws at the back and three medium screws at the front. Turn the ST back over and remove the top, putting it somewhere you won't step on it. It is now possible to lift the keyboard unit enough to see where it plugs into the main board—unplug it and put it somewhere safe. You can’t put the plug back the wrong way on reassemblybecause l

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it is keyed. You should now be looking at a tin can which screens the main board. Remove three medium

holding down the front of the screen and three short screws that are visible through the round holes in the top of the screen toward the back. Now lift out the whole board complete with screening, making sure that the connectors at the rear come clear of the holes in the lower half of the ST casing. This is easiest done by lifting the -————————————-—————

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front of the board assembly and lifting it clear of the moulded pillars that stick up from the lower casing. These are visible through the oval holes in the top Of the screen. Put the board assembly on a surface where you have the soldering tools and extra components to hand. Carefully untwist nine screen retaining lugs and unsolder the remaining two, and you should now be able to lift the top and bottom screening away, leaving the main board to work on. My board said it was a revision 28, but as far as know ST boards only changed radically with the advent of the 104OST, which has a completely different layout and socketed RAMFrom now on left and right means looking at the top Of the board With the RAM lineup toward l

YOU-

Take the 16 new RAM chips and bend up pins 15 on each so that they are horizontal. Snip off the excess length of these at the shoulder, leaving enough pin to solder to. Lay them on one side. Locate the decoupling capacitors adjacent to each RAM chip on the ST board. These have to be temporarily removed to make access during later stages easier. Carefully disconnect them from the board by 4 and

bending their excess lead straight on the underside of the board and descldering so that the holes are clear for later remounting. Don't pull at the body of the capacitor or it might break use the leads to free it. if you do break one you’ll need to get 220nF decoupling capacitors of the same size to replace them. Take each of the new RAM chips and piggyback them on to the existing chips, making sure you have the pins the right way round. it helps to make them a snugger fit if you havebent the pins of the new chips inward a little to help the grip. Use your fine soldering iron to solder each of the new RAMs to the existing ones. Check the joints on each chip as YOU finish because dry joints are easier to rectify now than later a magnifying glass and a strong light helps. When all the chips are mounted and checked you can replace the capacitors. Take the insulated hookup wire and connect pin 4 ofallthe new RAMS together, going right to left one at a time. Connect pin 4 of the far left RAM through the round hole in the board below and left of U1 5 to pin 18 on the undersideof U1 5

P Eter

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Andrew Bennett

look at two ways to expand the ST

——_———’ Atari ST User June 7986 ——-———————————~——'

m


the ST’s MMU chip. The pins on this are numbered on the top of the board so it is easy to locate pin 18 among the staggered connections on the underside. Now connect pin 15 together on the eight new RAMs on top of U45 to U32 and connect the far left pin 15 of these through the round hole to pin 22 of U15. Do the same for the RAMs on U30 to U16, taking a connection through to pin 21 of U15. What you have done is used the MMU's unused Bank control lines for the new memory. None of the connections to the RAMs should stick out above the top of the new chips too far. If they do you stand the chance of fouling the top screen when it is replaced. Check everything again. Are your solder joints above suspicion? ls everything back? Have you connected to the right pins on U15.? If you're happy, you can either reassemble the screen and case before verifying success or you can put it on to a clear surface and connect up power, disc and monitor to check the modification. Either way reassembly is the reverse of assembly. If TOS boots up correctly you've not blown anything. If it doesn't boot then switch off and check everything very carefully, especially for —

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AT the recent Atari User show a company called Advanced Systems and Techniques (AST) introduced a 512k upgrade board for the 5208T. Installing this board will give 1mbyte of memory, as much as the new 104OST. The board measures about 2in by 4in and looks professionally constructed. It comes with a simple instruction sheet which should tell those experienced in electronics all they need to know. To install it you must first disconnect all the leads from your ST then open it up and remove its circuit board. To do this you must unscrew some 12 screws and undo about 15 fastenings. Then one chip must be removed from its socket and placed into a socket on the AST upgrade board. The AST board is then plugged into the empty socket on the ST board. Thirteen wires on a ribbon cable are then soldered to various legs of two of the ST's chips. Finally the ST can be reassembled and tested. The whole installation process should take no more than two hours, but extreme care must be taken at every stage. A mistake at the soldering stage can leave you with a dead ST and the upgrade should not be attempted if you don't have previous soldering experience. If you don't feel confident enough to install the upgrade yourself AST will do it for you. Of course opening your ST and installing the board will invalidate your Atari guarantee. Included in the price of the board is a guarantee of your ST for the remainder of its first year. The

m—————-———

June 7986 Atari ST User—

solder bridges between adjacent pins. If it still won't boot then you may have zapped your existing RAM. Although my ST booted fine the first time it claimed that there wasn’t any extra memory there. TOS runs a check on how much memory there is on switch—on and adjusts system variables accordingly. My modified ST still had only 512k according to TOS. l checked my work and found that I had three out of 259 dry joints. Resolderingthese and rebooting found me witha megabyte of RAM. if after checking you can't get TOS to recognise the extra memory then you'll need something like the SID in the Development Pack to examine which bits of the new memory you can write to. This way you can track down which chips in the new RAM may be faulty. To check the memory is there you can simply print fre(0) in STBasic. The result will be 512k bigger than you used to get about 550k with TOS on disc. if you poke about in the screen memory area you'll have to add $8000 to all your values from now on because TOS puts video RAM in the last 32k of whatever memory it finds. Have fun. —

Peter Connors

upgrade itself is guaranteed for 12 months. With 1mbyte of memory you will have about 900k free with the system in ROM and about 700k if your system is still on disc. This extra memory allows you to assign huge amounts of memory for RAM discs and print spoolers. A large RAM disc will speed up your everyday work because you can use it as you would a normal disc and then save it before you turn off or reboot the ST.

Giving over a large amount of memory for a print spooler will mean that when you print outa document you will be able to do something else with your ST while the spooler prints the document from the extra memory. Luckily most of today’s ST software has been carefully written to make use of extra memory if available. For example, with the upgrade installed Basic now has about 760kforprograms and STWriter has space for about 71 1k of documents. Subtract 200k from these values if you have your system on disc. You should also be able to use larger databases and bigger spreadsheets with the upgrade. The cost of the board is £99.95.Thisincludes a 12 month guarantee, and installation if required. There are two different versions of the upgrade, one for the 5208T and one for the 5208TM. AST is also developing a 2mybte upgrade board which will take available memory up to 2.5mbyte. This should cost about £400. Andrew Bennett


Silica Shop are the UK's N01 Atari Specialists. We have been dedicated to the Atari market for the past 7 years and have the widest range of Atari product in the UK. We aim to stock EVERY Atari compatible product on the market and offer a FREE information service to Atari owners. Through our ST software club. we will keep ST Owners up to date with the range of ST product which is available as well as details of any special offers. The list below is of the product which we currently have In stock for the SZOST, as well as titles which we expect to be released in the near future If you would like to join our software club and receive a full copy of Our price list with release details and further ST bulletins, please complete the coupon below. This service is completely FREE OF CHARGE! Typing Tutor ACTIVISION Borrowed Time Hacker Mindshadow Mus-c Studio

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As you know, Atari Basic has two commands fO" PTOdUCiNQ SOUHd SOUND and WAVE. They can produce a large variety of sounds, but you may have to experiment to get the exact effect or note that you want to use in your programs. Unfortunately, use of the Wave command has been limited by the fact that Atari missed out a set of shape diagrams shown here in Figure |_ from page C158 of the ST’s Basic manual. Each graph shows volume against time. Armed with these, you should now be able to produce all the sounds that you want. Since late last year a three page article has been floating around the computer clubs and bulletin boards. It tells how you can upgrade your SZOST from 512k to 1mbyte by buying the required chips and soldering them into the ST yourself. If you are feeling brave, read Peter Connors' article in this issue which takes you through the upgrade step by step. Although it warns about possible problems if you make a mistake while upgrading, don’t feel that it mentions them all. Soldering the 16 new memory chips on to the backs of the ones already in the ST is hard enough, but you must also contend with the slight idiosyncracies that your particular ST might have. It is possible to do the upgrade correctly and still have it not work. The memory controller (MMU) chip in some early STs could not handle 1mbyte and must be swapped for the latest version. Even the thickness of the wire you use in the upgrade can make a difference. All in all, DlY upgrades should be left to those who have the electronic equipment to solve any problems that may arise. If you do not fall into this category, and you still —

3 an d your Atari ST _

queries to:

ANDREW BENNETT, Atari ST User, Europa House.

68 Chester Road ' Hazel Grove, StDCprl’t SK7 ENY,

I

wish to upgrade, you should strongly consider using a board such as the one from AST reviewed in this issue. By now many

of you will be considering upgrading your SZOST by adding the Gem and TOS ROM chips. Unfortunately, upgrading isn't simply a matter Of throwing the new chips into their SOCKGtS- There have been many subtle changes in the area of the 5208T's circuit board near to the ROM sockets. Each tYDe Of board requires a

slightly different method for upgrading. Some require that you make or break certain links on the board. If you feel confident enough to make such alterations yourself, make sure that you get a copy of the full Atari upgrade instructions with your ROM chips. The instructions consist of about five pages of text and diagrams. If you don't feel confident enough then you should let your friendly neighbourhood dealer do the upgrade for you. Don't forget that if you do the upgrade yourself, and find you have damaged the computer, then you may find that your guarantee is void. Even when you have your system in ROM, life can still be difficult. When you reset or turn on your ST the system will look for a disc in the drive. It will then load the DESKTOP.lNFfiIe and any desk accessories that may be on the disc. If there is no disc, or the drive is off, the STcantake over 30 seconds to boot up. if you try to boot up with your old system disc the ST will load the old TOS as before, making it easy to believe that the ROMs don't work. The best solution to all this is to use your old system disc as your boot up disc after having first deleted the TOS.IMG file from it. Your desktop will then look exactly the same as before.

Problems, problems FIRST letter this month comes

u

4

8

w

Figural:

11

12

13

/

14

The diagrams missing from the ST’s Basic manua/

E—————*—————June

from Stathis Konstantinou in Greece who asks about dumping the graphics produced by his Basic programs to his printer. This can be achieved by simply pressing the Alt and Help keys together with the printer turned on. You should also set the “pixels per line" setting in the lnstall Printer desk accessory to 960. This method of screen dumping will work from most programs. The only one that have so far come across that does not allow this is the Megaroids game, but I'd be interested if any of you have discovered any other programs that don't work with Alt—Help. Mr Konstantinou also wants to know if there is a good book covering the ST’s operating system, and in particular the Virtual Device Interface and the Application Environment l

1986 Atari ST User—__—_____


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1986 AtariS‘T User————————————

'


Compiler IN this ?nal part ofthe compiler seriesl’ll givethosecommandswhich the compiler provides but which have no direct equivalent in Atari Basic. Firstly let me introduce the concept of a named procedure. These are like subroutines, but they differ from them in the fact that each named procedure not surprisingly can have its own local variables, and that a named procedure has a name. To handle named procedures the Compiler 3890 has three new keywords DEFPROC, VAR, and ENDPROC. Using these keywords let's define a named procedure called DELAY which loops around doing nothing for use a FOR... a short time. We could NEXT loop to prowde the delay,l say N 100° Here 5 a FOR. (Z1). T9 p°ss'b'e s°'”“°"' —

20“

2010 Will

N

Nil:

2°“

ENDPRGC

FUR

N

TD

19“:

NEXT

.

.

This will execute the p rocedure until F Is DOSOMETHING repeatedly to 1' It ls clearer way to equal a. set than usmg IF "THEN .

'

.

'

wrltggilecioop .”And now on to what is possibly

the most powerful feature ofthe compiler —the keywordswhich dealwith timed interrupts. These are ENTER, AFTER,

ENTER ROUTINEl RFTER 10

means is enter the piece of code called routine, but wait until after 10 jiffies (50ths Of a second) have expired- While the program is waiting for the 10 jiffies t0 elapse it simply continues executing the state— ments in your program.0nce the time limit is up the program stops whatever it is doing and enters the routine which you have specified. Once the routine has executed to completion the program resumes executing where it left off. You may be asking yourself what the point of it can assure you that it is is, but useful how does interextremely rupt—drlven music in perfect tempo grab you? Before show you how you might go about that here's how you set up an entry routine as call them. You simply bracket the code to be entered with the keywords ENTRY and EXIT as follows: I“! ENTRY ROUTINEtPRDC

What this

10" N,“

FOR

ill!

PRUC

DELAY

102!

NEXT

N

N

TD

ill

I

I

_

PROC '5

Similarto GOSUB _

_

.

.

_'t1h5t

t° be executed. causes'DE'LAY N°t'_°e that th‘s piece °t code uses N for 't5

'°°p Winter, ‘

.

DDSONETHINBMNTIL F=1

REPEATiPRUC

N

Note the use ofVAR N in line 2010 which declares N to be a local variable. In effect this means that the procedure DELAY has its own private variable called N which no one else may use. Another way of looking at it is that if any other procedure or program is using N for some purpose then calling procedure DELAY will not cause N to be corrupted. An example Will make this clearer:

I

.

ENTRY and EXIT. The ENTER command is a little like GOSUB. Here’s an example of it being used:

DEFPROC DELAY

202.

itself to structured programming is UNTIL loop. This the REPEAT allows you to repeat a sequence of until some condition statements becomes true. For example:

as

(1093

DEEAY-

varla Howa/er 9 ca D?L?YNuseSJts?own IS lsprivate e an qu e separate from the variable used in lines 1000 to 1020. The compiler will

quite happily keep track of the two variables even though you might expect it to become confused. This powerful feature of the compiler allows you to develop self-contained procedures with their own variables. You can then safely use these in your programs without having to worry about what variables you used and whether or not they clash with the variables in your current program which is more than likely with variable names just one letter long. Programming in small packages like this is sometimes called structured programming. Another construct which lends _

I

.

DUSUHETHTNB’EW

Of

you _d°”'t have to call your ENTRY routine by the name ROUTINE:any name Wt” do. course

provides a procedure MUSIC which starts SET UP_ the muSlC playing when you execute PROC MUS'C' The DATA Program

I

called

SET“?

statements in lines to 81 10 are {3090 data for mUSlC. are pairs the the These Of items T p'tCh and qurat'Oh' are 12 notes 'h the example There data list, but you can have as many as you want. The numbers-were chosen at random so I doubt if it sounds that that the ENTRY routine QOOd' Note. ties up variables P and D and also

——-} June 1986 AME] USER

29


0000 DEFPROC SET

UP

"ugm

ggm

ENTER

3520

ENDPROC

HUSICTRESTORE

AFTER

HUSIC

wondering what becomes of the USR function's arguments when the function is executed. The answer is that they are slotted into the compiler's A to 2 as follows: variables ‘ A W'” eql‘a' the ”umbe' °f arguments (0 If there were none) . B will aqua lthe f‘"5 t a'gume" t " .f

LIST

1

S030 ENTRY NUSIC

Rm

READ

0050

SOUND

ME

P=I

THEN

RESTORE nusxc

am

LISTESOTO

ENDIF

0,P,10,B

ease READ D=AFTER

C

an Y

0070 EXIT

0 C will equal the second argument, if any, and so on with Z equalling the 25th argument, if any! So if your compiled program is called with X=USR(14336,1,2,3) you will find that AwiII equal 3, B will equal 1, C will equal 2 and D will equal 3. You can ignore this or you can check A to see if there have been any arguments, and give an error message or process the arguments as appropriate. Whatever you do there is no dangerofthe arguments being lefton the stack and crashing the computer the compiler looks after the stack. See Programs II and ill for examples of compiler programs which process arguments. The only keywords left are CODE and ENDCODE. These allow you to

8000 LABEL HUSIC LIST 0090 DATA

2,3,4,5,6,7,S,9

0100 DATA

9,10,11,12,13,3

0110 DATA 14,16,19,23,30,4 END OF L157

3120 DATA 0TREN

Program/:Music demo

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30 ATARI USER June 1986

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——-——) June 7986 ATARI USER

37


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l/We authorise you until further notice in writing to charge to my/ our account with you on or immediately after 15th day of each month unspecified amounts which may be debited thereto at the instance of British Telecommunicationsplc —TELECOMGOU) byDirect Debit. Bills are issued 10 days before debit is processed.

————————

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date (E te

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I confirm that I accept the terms and conditions for the time being in force, a copy of which are available on

request

M

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_

m

Postcode

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.

mm

Address

With

.

m er to use things canorge any ma k e f M computer 9 or even micro. hand-held dgwce an elf-”tron“: typewriter prowded it has communications facilities). a modem (it can be a simple Prestel type using 1200/75 baud, or a more sophisticated one operating at 300/300 or 1200/ 1200 baud), and appropriate communications software.

m 53mm

com-on

M

.

three

All charges quoted are exclusive ofVAT. Currently all bills are rendered monthly.

Name

°

~

EFL!"II—llsnge m a fem

Billing and Payment:

are

-

—_—"—————_—

charges relate to the transmission of information by the Dialcom service to other Dialcom services outside the UK and the Isle of Man. Multiple copiestoaddresses on thesamesystem hostincuronly one transmission charge.

telex: 5.5p per 100 characters (UK); 11p per 100 (Europe); 18p per 100 (N_ America); 53125 per400 (Rest ofworld);£2.75 per 400 (Ships at sea).

-

What you need to M.lCl'O L.1“ k access

These

Outgoing

'

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£10.

0

~

Radiopaging: No charge.

_

plc.

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Date

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C. Please invoice the company/authority. If you select this option, which is ONLY AVAILABLE to government establishments and Public ( /) D Limited Companies, you will be sent an authorisation form for completion which will require an of?cial order number to accept unspecified amounts.

.


Mailbag

give me some guidance on how to put more than one DL/ on the screen at once?! never even knew what an interrupt was before I read Mike Rowe’s article in the September Atari User. A few months ago / ordered a Revision C Basic cartridge CAN you

'

'

from Silica Shop. With it plugged inlensuredit wasaC ROM by PEEKing location 43234' This returned 234—a But my 800XL St”, C ROM” to lock up. continued lam qurte frustrated as to / do next. If someone what want help me, ”I eat my T David Manlovo, goldfish.

Edinburgh. ,

-

3 u AND Go LDF,s H

advice you can

an

ive me.—

Lords Alexander? Haslomore, Surrey. 0 Amodem is a protocol standard, not a program. Many comms packages for the

800XL give you either

Amodem or its close twin Xmodem for transferring data

_

352-13: mngiienzsh-lfvist'hnfhlz files. ,

,

to the display "St

hfgbaedrded '_

,

w'“ 9° to the Each ‘me’mP‘ same address in memory, bl" you could then use a small work out counter routine to how many times |t has been run, and so what to do next.

Alternatlvely location

54283 (VCOUNT) will tell your routine how far down the screen the display is at any thus you could given time work out where the interrupt had happened. You Will almost certainly find that the problems you are experiencing with Basic owe more to a hardware fault than to the bugs in Revision B Basic. Try taking the machine back to the dealer and explaining the situation. Otherwise, we recommend a medium dry white wine to go with your meal. —

Try Home—Pak or many of the public domain terminal

'

I WONDER if you or one of your readers could help me. / need to transfer data from an

Atari 800XL to an IBM PC, To do this, I require two com— munications programs, one for the Atari cal/ed AModem and one for the IBM calledPC Talk III. l have PC Talk/II, but so farl have been unable to locate A Modem and the instructions that go with it. I would be most gratefulfor.

something. I feel sure that there must be a standard At end of ?le phrase which I do not know about, can you please help me out? — J.J. Mold, Matlock,

Derbyshire.

programs available from user groups. If you do not have the 850 interface module for RS—232 you could do a lot worse than getting Miracle Technology's DataTari cable and terminal software package

0 Other than usingastandard terminator such as "End", as

File end

t_°

you have said, you could have used the following line:

ll

ERROR

IF

DCCURS

send the program to

a

new

a user of an Atari 800XL and 7050 disc drive I have come across a problem for which I can find no answer either in Atari User or my user manuals. lam experimenting with the commands to open channels to the disc drive in order to write data to a named ?le -—

to write data to the ?le and OPEN # 1,4,0, "D:BANKFJLE" to read from the ?le within a

Program l have succeeded in writing a program to give screens to a ?le

bankfile with new cheque details and so on and to erase details. My problem is coming to display the read data. lcan get the program to read and display the data from Bank?/e using” OPEN#1,4,0“D:BANKFILE which is all OK, but as soon as the end of the file is arrived at after displaying all the data I get Error code 136

error numberf'qd_the H 't ‘5 136 (End °f ?le), you do whatever need to could V°“_ m that case. Othenmse, you in ShOU'd handle the e"°f feel approway whatever Y?“ pnate, or halt W'th some form Of printed “Error has OCCUffEd" message. The most elegant method is 5h" t° exit gracefully via a “0“99 record, With a neat to handle any errors in TBA? the h'e'

Brlng on Brataccas THANKS for your magazine. At last the de?nitive issue for the long forgottenAtari users. The ST software page was appreciated, but what happened to Brataccas by Psygnosis, a game with an in-depth review crying out to be written? Something YOU might like to consider WOU/d be review1719 Atari arcade games ff0m

and what

Southend,

an

experience that was.

Played with a track—ball built into the machine, it’s a game I can recommend to all Atari fans. For some time now I have envied users of the Quill creating works on lesser

machines,

so

please has

anyone heard Of, a 3mm” program for Atari users? — Geoff Redburn, M'“°“ Keynes. . Try Adventure Writer, by come Writer if you can find _

_

one!

No

feat

_9

saVIng

'

'

'

have I OWN 3” 8,00)“ and recently obtarnedaCXL 4093 assembler editor, which seems

to

AS

cal/ed

A"

lMtREll LINE 1“.

enmes": c 9° £25212? hhem’htih cou_

'

dl'emma

ask a user to update

TRAP

GOES TO

'

OPEN#1,8,0,"D:BANKFILE"

Protocol Standard

tried to read data after getting end-of-?/e). Is there any recognised statement that tells the program that "at the ?le end” do

(program

time to time. Some time ago I had the pleasure of playing Marble Madness at

now

to

work perfectly

except for two things. The command SAVE?uc: which saves object code does not appear to be operating proper/y. The command ASM,,#C: a ears to work ro erly. Hiya/ever when] trytIZJ/o‘a’dthe saved object code from Basic, which according to page 65 of the manual it should do, the load routine crashes and no program is loaded. I would be obliged if you could give me any advice on the above and also tell me if this particular assembler cartridge is fully compatible with

Dominic s. the’ 800XL? Smith, Airdrie, Lanarkshire. 0 Your problems are all —

related to the fact that neither Atari Basic nor the cassette system fully support the normal binary load format of an object ?le. For disc users, you just use

the Binary Load option on the disc menu. For cassette users, since Basic will not load a binary load ?le, the file format

binary save is as follows: First 2 bytes: $FF $FF

of a

(flags)

Next 2 bytes: First Address

’ June 1986 ATARI USER

41


_____—______

(Lo/Hi format)

Next

bytes: Last Address to load (Lo/Hi format)

QWAQU

Then follows the data to go in the addresses specified. There may be further seg— ments of data, each with the same format (although the $FF $FF is optional after the segment). ThUS, to load ?fSth 930 segment, use something like this: ll

REn REllD

ll

alum

Loan

3. 4D

23,3):ester

FlLE'1END

01.019“ 01,0 men

:: éihg?gfnegg‘mzris

Manuals '

I'EQIIII'Ed

Road

IOWN anAtar/400 and 7010 recorder. The information sup— plied with both said that l should have a manual/ did not .

a. set ll.ElBET M'F

the printer? Can it '8 there a

dismantle

T0 ”MS" m an umnmnxs amen:

1"?

p’og’ammed or

Last/ y is the Juki 5520 , 00/0” printer any 90°,d' worth

write

an

_

your machine

the

code

programs using any areas of memory that Basic uses. Page 6 is an ideal space to USB-

and compatible

cost

Atari}:

With

Al?” ’3 Atari planning any full Size colourprinters?Syfull SIZE I mean at _

,

least 9 inches

If

how much and when? A-K- BiShOP, Chesunt, Herts. . all The Epson printers have on Centromcs pm a the interface Wthh can select the auto—line feed for you. All you across.

so

_

Auto-Illle .

feet] tl p IS the Ferguson M005 colour . . TV monitor capable of giV/ng . . medium colour resolution on .

-

the ST? The comes mm a 52057hlgh . resolution monochrome monitor as standard. lfa high resolution (640x400) colour monitor were connected to the ST would it give high resolution colour, high resolution . monochrome or a medium resolution output? I have an XE and an STand want to use both with my Epson printer. The trouble is that although the ST gives an automatic line feed and car— _riage return output the XE does not. [know that to remedy this/ simply have to change the appropriate dip switch on the Epson, but obviously this is a great pain as it means taking the printer apart to do so. Basically all I want to know is how can / change a dip switch without having to .

_

42 ATAR/ USER June 7986

would be kind enough to the ”format’o” /

receive either. Could you please tell me the 400 and

we? 1,122,725“), Also/

SUPP/y?

You may then GOTO line 50 again, until an End-Of—File happens. Be careful not to

need do is turn the switch to Off, WthheVGf computer you are usmg, and adapt your 8 km com p uter cable to short p in 14 to ground (Pm 16)This will select the feature every time the cable is plugged in. .

-

.

.

-

Monltor Gable WAS very interested in your review of the Sony KX—74CP7 colour monitor in the January issue of Atari User, This interest prompted me to write to Sony (UK) for information regarding a cable for use with their monitor but my letters have been received with the kind of total apathy which no doubt we are both familiar with from large companies including Atari (UK}_ / wonder therefore, if you I

16k

.

51

n.F::;B:;::;:::

the

machine doesn’t have enough memory for this pregram.

Hazel Grove Stockport SK7 5NY

OR

LOAD

Chatham, Kent. 0 Unfortunately

Mailba Editor Atari Ugser House

mm (M: RANGE CHECKItlllll) |1,4,I,'mFlL£me.m' w lumen "J lF ll()255 30255 men mm mm GET

1

.

OPEN

ABIlllll‘lV 5'

Ma?bag

Fm

FlLE

O

WE welcome letters from readers about your experiences using the Atari micros, about tips you would like to pass on to other users. and about what you would like to see in future issues. The address to write to is:

NO

2!

shown in your May issue. However I keep getting ERROR 747 at line 280 and ERRORQ at line 960. Howdol put this rightP—P. Pattinson,

2

p

ospec f se ll'ing suc h an expenS/ve piece ”f equipment would guarantee a reply. / was wrong! T S. Fallaize, Leighon-Sea, Essex. . The cable you require is a standard Atari one, as the 0_

_

Sony monitor can accept a cable in almost any form you care to use. The one use, easiest t_° ShOUId you MS" to “me one yourself, would be a DlN plug at the Atari end with two p h °”° type p “93 ‘ °r a BNC and a phono — at the monitor end. Connect them as follows. DlN pf” 1' N/C DlN pm 2: Screen (on both other plugs) DIN pin 3: Phone centre pin DlN in 4_ BNC centre in (or otheFr)p hoho if two p ho?os used) pm 5“ N/Q gm imply plug this cable into our Atari and into the Audio lln and Video In sockets on the Sony and it should work fine W1e t th''5 W'.“ 5° I II ° f ms:6m” as weve'a ave Y°“’ p,’° to be a very good found lt. monitor indeed. |

.

_

,

_

Morgan, North Leicestershire.

-

/ OWN anAtari 500 XL With a 76k memory and have tried to program the Alphabet Train

Kilworth,

0 Try Atari, or any main Atari dealers, for the books. if you can't get Atari's own book there are plenty of others which will provide very much the same information As to upgrading your 400 it would be far cheaper to buyan 800XLfrom Dixons. asthe last price I heard of on 48k boards for 4003 was about £80“ Once you have done this you could sell off your old 400 and recorder, Since the new machine comes with its own -

anyway.

That rare 1

.

Traln cancelled

my 400

a relative please recommend upgrade and its cost. —Jacob

.

_

wish to have

200 XL

BROWSING through computer books m W'H' Smith

recent/y, Of

/

came

367033

anAtar/ computer / mention hadn t heard of beforeSeveral books had referen— ces to the Atari 1200XL, and one had ail/CH”e. / t was ”7 the

thlW" and White style hUt W’th silver keys 357033 the top Of the keyboard and several keys numbered F 7 , F2 etc along With the Start, Opt/0"

XL_

kE‘yS-

The cartridge 3/0? W673 0" the side of the machine, which was said to be 54k- / thought


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S tress .

anaIYS|s I MAKE stress analysis pro— grams on an Atari 800XL. The following limitations in Atari Basic limit the length and complexity of these projects: O The maximum number of variables available in one program is too small. 0 The maximum number of ciphers/letters in one line is also restrictive. 0 Can YOU help POSSib/Y With a

short ML program which

modi?es the basic limitations? The first point meansl have to stop a program and make two or three separate ones - a time-consuming and disappointing process. The latter point is really a nuisance as the various components of vector and matrix

maths need to be on the same line, otherwise the order in which the variouscomponents are read into the computer messes up the answers.—J.R.

Carter, Holland. 0 The problem of number

of

variables being too small can be overcome quite easily. Probably the best way to do it would be to use just one array type variable. Thus you only use up one name in the variable name table, but you could have 10, 20 or 1,000 entries at your disposalThe second is harder to resolve. Certain increases are possible by using POKE 82,0 to reset the margin, and by using abbreviations wherever possible. However we don't see any reason why you can't put different parts of your calcuIations on different lines.

Simply split any formulae into parts, then have one final line to calculate the sum of the parts. The process the computer uses to step along the parts of a single line is exactly the same as that used to step on to anewline, so simply breakthe problem down into smaller parts and put them on different lines.

turning lights certain times.

on and off at

What type of software would have to be written for both of the above? — Paul Myers, Runcom, Cheshire. O Len Golding will be covering this in his series on gadgets which begins in this issue. _

lnternatlona| characters

L'lg ht'"lg -

ulterface COULD you tell me how to connect an Atari 7 3OXE up to lights and have it turning them on and off when a certain key is pressed. Could you also produce an article on an Atari computer

controlling different things around the home, such as

WITH refemnce to your rep/V to 6.0. Dubourg of Mans?eld in your December 1985 issue concerning printing thefsign / would like to add the

following information. Notan/ydo you have

to turn

international character set with [CTRL-O] 27 [CTRL—O] 23 but you then have to turn it off again before the end of the line with [CTRL-O] 27 [CTRL—O] 24. If you do not turn if off you on the

Simpler user defined graphics AFTER many hours of

deci—

phering user defined graphics by adding up all those num— bers, / sat down and wrote a formulae for getting around the problem. Put down on grid paper VOW UDG, — an 8X3 grid should be used. Draw a line Straight down the grid middle and mark sides A and 8.

Now carry on 43 the same as 4A thus 2A, 23, 3A etc, to 88, Now you take line one hex and convert an the hex to dec. converter. Do all 8 lines. This method can be masteredandcan be workedoutin the mind. lhope this is a useful

D, C|apson, formulae, Shaftesbury, Dorset. —

A 1

2 3 4 5 5

Answer

B

C

3

E

7

F

F

D

B

D

B

C

3 3 3

7

C

3

C

=C3=195 =E7=231 =FF=255 =DB=187 =DD=187 =C3=195 =C3=195 =C3=195

Write down horizontal/y numbers I to 8'by the side and read 4A as write on left hand side hex code (see hex tab/el-

Hex to doc. converter

Inn-Imam I.

H”

?-“m-B?lil-EI!

5 SECOND HEX DlGIT

mmmmmmmm-mmmmmmmm

nmnnmmmmmmmmmmm ammmmm-wmmmmmmmm nmmmmmmmtam-mmmmmm S “WEE-KEEN T Emmmmmmmwmmmmm F

“b“

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0

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6

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44 ATAR/ USER June 7986

|

?m-smemeesem-eeem -IIEIIE nmmmmmmtmmm-mmmmmm nmmmnnmmmmmmrmmm Ilmrmn-Mlmmm nnnmrmmmmrmmmrm Immmmm-mmmmmm mmmmmmmmmmmmzm BM?MEM?EME-E?

I-"EEMEEEEMEEEEEEEEWWEE

-

'


——————-Mailbog et 6 at the be g innin g of the go,“ line. / have read that one could put [CTRL-O] 27 [CTRL—O] 23 into the print formattingblock at the beginning of a file but certainly usingAtar/Writer and a 7027 printer this does not work because every line starts

with 0’. I have taken the liberty of enclosing a copy of instruc?ohs for obtaining the ICS which I put on disc so that! wouldn't have to keep explaining it to my wife and kids. If you think it is any use, perhaps you could forward it to Mr or Mrs (or even Ms) Dubourg. _ Maurice R. Pearson, Wick, Caithness. When / want to write an International Character, say f, / have to type [CTRL-O] 27 [CTRL-O] 23 to turn on the International Character Set and then [CTRL-Ol'lwhere * is a number found in the back ofthe 7027 manual and roduces an international chaliacter.) / then turn off the mg by

typing [CTRL-O] 27

[er/no]

24_

So the f is written by typ-

ing[CTRL-O]27 [CTRL-0123 [CTRL-O] 8 lCTRL-O] 27

[CTRL-O] 24 with no 3p aces between. e is written

by

typing

[CTRL-O] 27 [CRTL-O] 23

[CTRL—O] 20 [CTRL-OJ 27 [CTRL-O] 24 with no spaces.

Accent on

accents

IHAVE an 800XL which I use witha 7050 disc drive, a 7027 printer and an AtariWriter disc. I find when printing lengthy reports occasionally the 7027 will stop in mid-sentence and apparently lock up. I tried hitting Break and then P again, but all/ got was "Device not available". I contacted the Help-Line and was told that/fl waited-11} minutes all should be well, as it was just the 7027 re-inking. / tried that, and lo-andbehold they were right. The 7027 started off again 41} later and completed

minutes the

/ob._

My first query is this.As the .

7 027 doesn’t make an move at all during the waiting time, what exactly is re-inking? My second query is that when using the International Character Set the 7027 Prints a small a with an accent in the left hand margin. This spoils reports incorporating German or French words. Is there any way of printing out the set without this appendage? Incidentally congratulations on the magazine. I look forward to receiving itas much as I do my Norwich User Group's Nugget. I wish they

were

both weekly.

Bill

Sibley, Wells-Noxt-the-

Sea, Norfolk. 0 Well, we've never heard of it being called re-inking before, do know Of the problem you refer to. It is basically a throwback to the tYPeS Of printer Wthh USGd to get very hot when used for although

we

longhperiods. e computer

simp

|

Y

pauses for a while to let the printer head cool down. This manifested itself in the old 400/800 series machines as a bug which repeated the last line of text after re-starting, which could be even more annoying. As to youréproblem,this is

caused by the fact that AtariWriter sends extra control codes after a carriage return, and can be avoided by turning the International Character Set off again after each special character is printed, and then on again before the next one. Use [CTRL—0127 [CTRL—O] 23 to turn it on, and [CTFlL-O] 27 [CTRL-O] 24 to turn it back Off again.

pr?hlem PLEASE explain in very simple terms how to run my Home Filing Manager on an 7 30XE using the extra memory. lhave an 800XL and unless I can use the extra RAMI can 't see any advantage in having the 7 30XE. J. Hopkins, —

isn't designed

Syn?le+ for

a

can use 128k.

TEStlng

RAM COULD YOU please ”it me know if the 32k expansion RAM l have for my 600XL is faulty or does 32k + 7 6k add up to 40k on the 600XL?/ only yet 40 memory blocks when using the memory test. Many games using 48k RAM like Colosuss Chess 3.0, F—75 Strike Eagle and Space Shuttle are OK. Solo Flight being the exception. Could / get this problem with Mercenary from Novagen? Has anyone else had this problem with RAM add-ons?— P.J. Tappendon, Walton— on—Naze, Essex. 0 When you go from Basic to the self-test, Basic is stillusing Up 3k Of memory, 50 40 blOCkS will be quite normal on the ll‘l¢3'Il_l'l0l'lrl1 test-h 0 0 cc t e f U ll 48k h 0 Id down Option while you switch on. This will disable Basic

as it

to use it. Try database that

how to save pictures like this? Alan Pick, Cannock, Staffs. 0 Although you could still see the pictures on your screen

this was only because you had not cleared the memory when

Similarly, NEW and RESET do not clear the graphics area. a GRAPHICS command OnJy do thiS, and by adding 32 ca you selected a version which retains the previous picture. Once you turned off the computer all of the memory was wiped including your —

picture. Unfortunately, the SAVE command will only save your program, not other areas of memory. The fastest way to save the picture is by a machine code routine, but a simple Basic version is as follows: To SAVE (while the picture is showing):

mgdzi?a

1:2: 22: lg 32" ”mu" m . SMl SCREEN (it. “1“on mum um um n,n.o.-mnl.tum.m' “m “W‘PW‘W'PEEK‘W'M

completely and take you

33:

iii: :;“:::KI?,“°W“" m“ E" l' um ms: in .

To LOAD again, use. _

an:

iii: tmgllzilfzgz 30:82!“ ”mm, m a sum mm “E! "m no ii" ”my“, mu om ii.4.|.-n.nl.zms.mum anmwssmamemsmzss

-

s aVlng .

plctures AFTER typing in the Canvas program from the October 7985 Atari User I produced a very good picture of which I I thought! would try to save the picture, and that’s where the problem started. I pressed Break and while the picture was still on the screen typed NEW and 70 GR. 75+32_ Then I saved it on tape. I

pressed Reset and typed

NEW, and GR. 7 5 +32 would put the picture back on the screen. But after the computer was switched off and on again / tried to load the picture but it was not there. Could you please tell me

GRAPHlCS

you did the 15+32 call.

straight into the self-test. You will get exactly the same result on an 800XL or a 130XE, so don't worry about it- BY the way, Mercenary should work fine on your upgraded 600XL, as, indeed, should Solo Flight.

was very proud.

Database

Wisbech, Combs. 0 Sorry but you can't,

_

2:3: 22: ii'il'ioii ' inrm" ' m“ in l' ZIMICLOSE n

80th

Of these could be to the Canvas program added 'f you want.

Stereo -

COHI'IGCtIOII HOW about some programs ft" the 730XE “31779 more Of the available memory? A Is 0, Wl / l m V 7 3 0X5 prdUCé' 8Udf0 OlltpUt at 8/6‘V8l to drive my stereOP—Stowart

Bowld, Evosham, W0?“-

0 To

use your stereo connect mono DIN plug from the Atari monitor port to one ofthe Aux In sockets. a

June 7986 ATARI USER

45


Take part in our Wide-ranging Reader Survey, help to decide the krnd of features you’ll be In future Issues of reading Atari User, and -

-

-

of

Q

O a $3551?

-

yourself the

Ps|0N ONE

Ihpa‘?p}, it o

-

-

Wm

re

volutlonary

g

o R GA N | s E n

a. f???

reasons for the outstanding success ofAtari User has been our determination to reflect, as far as we possibly can, the interests of our readers. We

the

do this by careful study of the letters that pour into our editorial office every day, and by talking to the many thousands of readers who visited us at the Atari show. Now, as we plan the features that Will entertain, amuse and intrigue you during the rest of 1986 and hopefully stimulate to make even more use of your Atari we feel we need to computer take the pulse of the whole of our readership. To find out the kind of equipment you use now, and are considering buying in the future. To discover where your interests lie and the subjects you would most like to read about in the pages of Atari User. What YOU say when you fill in our reader survey on the opposite page could play a vital part in determining the kind of features you'll be reading in Atari User in months to come. So we’re asking for the cooperation of every one of you in making it a success, an 8-bit whether you own or an ST. computer To encourage you, we've some excellent prizes the brand new Psion Organiser "l and ten luxury bmders and mm“ covers for the

;

Qt? .

225133” ‘ ‘

7

: ,

A/Ctu‘aais’ze

Q

(w

.

,,

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7

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runners

up. _

_

Help us 9m": you the magazine

you want by f|||mg m our reader survey form. lf you wouldI|ke to eme’ the “WW P'ease '“°'“d° your name and address, b“ you anonycan, of course, remaln

22.3? 473321“

"

1°33???21213

If you wrsh your survey

for the 46 ATARI USER June 7986

_ 7

5

,

Q

'

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35-4»?

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THE handheld Psion Organiserwasaworldwidesuccesswhen it was released two years ago. Now Psion have announced the Organiser II crammed with the latest CMOS technology. 0 0 0 0

Its many features include: A clock and calendar With 8 regular alarm clocks A diary that reminds you audib/y of appointments An alpha—numeric key pad 76k RAM and 32k ROM '

O A powerful calculator O A built—in Basic programing

language 0 A database system to store your personal information or stock records —

Rugged, reliable and battery powered, the Organiser II be carried in your pocket to be used whenever and wherever you are. No computer experience is required because Organiser II is menu-driven. You can expand the internal memory up to a massive 304k by plugging in Datapaks thumb-sized EPROM cartridges on which to store your data or programs. can

WM! form to be Included

Organiser II, please

return

rt

m

the draw

by June 30, 1986.

a


_1

----—----------—_-----------------------------—--.

I

A-I-UER

I

um

I I l l l I I I I l I I I I I I

I

I I I l I I I I I I I I l I

I

I I I | I I I I I I

Atari 8—bit computer owners

READER SWVEy

I wish to enter the draw for a Psion Organiser ll.

How do you rate your knowledge of Basic programming? D Novice D Experienced D Intermediate D Don't program

Name(Mr Mrs Msl

Address

lfyouattendacomputer give its name and

please

I

Which computer do you own? D 400 D 1200XL D 800 D 130XE

I I I I I l I I I l I I I I | I I I I | | I i l I I I l I I I I I

D GOOXL D other

What memory capacity has your computer? .........k

club, town:

Do you own an 850 interface? D Yes D No Age group: D Under 15

D 15-20

...n,.........‘...............................-............

D 20-30 D 30-40

h

D 40-50 D Over 50

Which of the Atari Writer D Paperciip D Homepak

How do you purchase products for

your micro? D mail order

you b can rea d'ing

‘lqlow' ZingPave ser mon3 h D 3 6 f rnont h g 6- mont "1°ths- 15 year D smce issue 51 _

D every issue D 1 in 2

D

in 3 D less regularly

Do

Please list any other non—game product you regularly use:

ou p Ian to attend

.

_

D arcade

.

d raug h ts)

_

_

How

Ef?y"

Which of the do you use? D 300/300 D 1200/75 If you own a D dOt matrix D thermal D daisywheel

D

followmg baud _

rates

D 3 D more th an

2

1

Do you have 6 EM /TOS: on disc. 1:1 in ROM

1:1

1200/1200

printer, is

it: D plotter D other

What kind of monitor do you use?

D colour D monochrome

I I I |

D monitor/TV

_

.

What do you mainly plan to your 37 for? _

D

.

use

I

D programming ,

D work D personal/business

. . Which article, or series of articles, would you like Atari User to contain in forthcomingissues?

Please state manufacturer/type

I

-

3

Which other magazines do you read? G Am"? D M°"'f°f D Analog D Computer Gamer 1:1 Compute! D c & VG D Page 6 D other....................... .

13

Which peripherals do you own? D .5 mg drive D hard disc D D printer mg drive D other ..

read your

”1:32igitl‘ilegref;ople

D ot h er _

Which computer do you own? D 10403“:

.

D Voyager

g wig-3888V22

owners

D SZOST D SZOSTM

on view

Where do you buy Atari User? D newsagent D subscription D computer dealer

_

D Synfile +

Atari ST

.

D the wide range of products

Wh’Ch' ’f any, of the followrng modems do you own? D WSZOOO D Nightingale

D Syncalc

.

w,I your main interest be D new product launches D bargain prices D purchasmg a particular product

_

D c h ess, D 23333359 D simulators

the next Atari

D Visicalc

Superscript Logo Basic XIJXE Microsoft Basic

D No

D Yes

If you play games, which of the followrng types do you enjoy most?

D Mac/65 D Action!

D D D D

Shotv?

1

you use?

D Assembler Editor

D high street shop D exhibitions/shows D Atari User special offers .

How often do you buy Atari User?

following do

D

D games

I I I I I

other

What languages do ya" use? D 88510 D Pascal

..

I I

I I | I I I I I I l I | | I

D

have a disc drive, is it: ID,217) D 1050

Have you any general comments to make on the magazine contents?

other

I packages you

“St/3arslofltlware se. y

D other

r1egu

WhiCh pieces ofhardware are You over the next 6 months? D D printer_ digitiser D dlSC df'Ve D M|D| mterface D monitor D plotter D modem D joystick D cassette recorder D other

3

I I

I I | I I I I I | I I I I

likely to buy

.

Which oft/13 above do you intend

to buy eventually?

Finally, by circling one number on each line, could you indicate your level of interest in the following articles (0 lowest — 9 highest} News

.

'

O ,

.

BeginnersBasm Beginner’s M/code Games listings Utilitieslistings Adventure column Software reviews Hardware reviews Book reviews

Mailbag

0 0 0 o 0 0 0 0 0

2 2

3

1 1

2

3

1

2

3 3

1

1

2

1

2

1

2 2

1

2

1

2

1

3

3 3 3 3 3

4 4 4 4 4 4 4 4 4 4

5

6

7

5 5

6

7 7

5 5

8 8 8 s

9

9 9 9

6 6

7

e

7

8

9

6

7 7 7

8 8 8 8 8

9

5 5 5

6

5 5

6

e 6

7 7

9

9 9 9

Post to: R d s urvey, eaier Am" User,

E'"°l°a “W“,

Chesm" Road,

Hale' Gf°V°r Stockport SK7 5'“V-

June 7986 ATARI USER

47


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Packing everything into five lines is tricky. You can't simply'generate random dots on the screen because only six of the possible combinations look like real dice faces.

This five—liner gets round the problem by storing the six legal patterns in an array then using a random number (0 to 5) as an index into it. A die face has three columns and three rows so we need nine bytes of |nformat|on to store each of dots and spaces. legal SIX pattern p055|ble faces therefore require a total Of 54 bytes. There's no need to arrange them as 3 x 3 matrices in the computer’s r?emory a 54 x array will do just as well and can be handled much ’

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character—into every element.

Thenitopensthekeyboardforinput.

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Ihese Issues

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preview of the new machines, Attack Alphabet Train, Squash, Adventuring, Hexer utility, Software reviews, Sounds, the 6502, Microscope, Atari Insights—Bit Wise, Beginners and Graphics, June issue: Analysis of the 130XE, Submarine, Adventuring, Random numbers, Software» reviews, Frog Jump, Bit Microscope, Sounds, Atari Insights Wise, Beginners and Graphics, special 12 page feature on Communications. July issue: Disassembler, Bomb Run, DOS 2.5, 17 Commandments, Adventuring, Display List Tutorial, Software reviews, PowerFunctions,TreasureHunt, Keyboard Sounds, Microscope, lnsights— Bit Wise, Beginners and Graphics. August issue: Analysis of 5205T, —

routines, Fruiti Gambler, Assembler, Touch Tablet pro~ program protection

grams, ?rst look at Logo, Raider 1997, Dos 2.5 upgrade offer, Display List Tutorial, Microscope, Software reviews. Bit Wise, Beginners and Insights —

Graphics.

Septemberissue: 8-pagespecialonthe BZOST, Mode 8 screen dump routine. Maze Munch, Data Maker, Display List Tutorial, 68000 addressing modes, list processing with Logo, Software reviews. Bit Wise, Beginners and Insights —

Graphics

October issue: Computer

Canvas graphics program, Updates for RAW 6502 assembler, 13OXE Ram-disc utility, Hex/Ascii memorydump utility, Pontoon, Software reviews. 68000 operating Bit environment, Wraptrap, Insights Wise, Beginners and Graphics. November issue: Converse program, Bitwise operator utility, ST graphics examples, ST software list, Guy Fawkes game, Display List tutorial, Adventuring, Microscope, Software reviews, Insights Bit Wise, Beginners and Graphics. December issue: Check-sum program, Special keyboard chamcters. Basic XL —

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Top quality scene-setting graphics Superb theme music Detailed instrument panel readout Gripping arcade action .

The Last V8 is currently No 1 in the Gallu Atari p. Software chart. It is on sale in the shops for £2.99 but YOU can get it free! -

Cassette only. Suitable for all Atari 8-bit machines.

7

To order turn to the order

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Page 53

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June 7986 ATARI USER

57


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— MAY 1985: Alphabet Train: This early learning game’s a winner with the children. Sounds lntereoting: Ready-made sounds. Hexer. Enter, display and run machine code programs with this hwdedmal loader. Attack Squash: Fast-action game. Reaction Timer: How fast are your reactions? Binary: Convert denary numbers to binary notation. Frog Jump: Guide the frog to his home in this ”951°“ ofthe arcadeclassic. IMXEMPW“: Use the extra 64k of to 9°°d effect. memory Submarine: Etcha‘Sketch: DEW pictures Scuttle the submarines. W'th a JOVSMRNumbers: Get random Random numbers C°de' Fifteen: Can you from Filthy keep the Filthy Fifteen happy in their cells?

ME:

"3°th

JULY: B°"‘" R‘m‘ Flam" the

and W‘d City safely. Disassembler: Fmd om whatsgoing 0". inside your Atari. Treasure Hunt: Use 1°91call thinking to ?nd treasure. Password .Generator. Keep the generatmg passwords n" you. ?nd. one you hke'

“53'de

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The" glue your ?ngers

a my by $3?“an for our monthly disc or cassette containing all the programs from each issue of Atari User. See .

belfry?

AUGUST: Assembler: Make machine COde program.ming easier. Fruiti Gambler: Save moneywiththistruit .

OCTOBER: Pontoon: Twist? Bust! Memory Dump: Examine memory in hex and Mdi. Display List: Demonstration programs. Wrap Trap: Action game for one or two players. Computer Canvas: Make your own micro masterpiece. Asmnbler Update: lmprovements for RAW assembler. Ram Disc: Make the most of the 130XE’s extra memory.

NOVEMBER: Guy Fawkes: Help Guy escape from the guards. Converse: Teach your Atari to be a psychotherapist Display List: Demonstration prov BM” Operators: Utility to provide logical functions. Circle: Draw and till a circle. Plus: Freebie of the month ' Creepohow machine code pinball game. .

DECEMBER: Countdown: Micro version of the famous TV game Get It Riel-ti Atari User‘s own heck-sum

Ust

lAtan'

m Disco- Son et lumiére on

pm; Makes listing easier

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Display 153°“:

Brill“:

Horace the Blob munch the maze monsters' morsels. Data Maker: C onvert your machine code routines to DATA statements Display List- Demonstration programs. Screen Dumps: Dump your Mode 8 screens to a 1029 printer. Bricks: Solve the Bricks problem. -

52 ATARI USER June 7986

l

'

/_/_.\ £5, 95 ‘

'

.

SFJ’I'EMBFJl:Maze Munch: Help

chore?

£3. 95 l

order form opposite.

Demonstration programs. Plus: Freebie of the monthmachilnsjirreicu‘llahonbmtedLlCormcpgalexmzamsmade easy" Jane's Program machine code entertainment. ' pr g w Di 3pla y $1“.Demczgm?in 1997: Futuristic text adventure: Touch Tablet., JANUARY 1936; Bells: Help M, Humpy rescue Demonstration programs. Esmerelda. Get It Righti: Atari User’s own checksum '

a

.

5312323322222?$§“§u{3§2'31£‘§f§;£f§3§2 '

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Alien Attack: The game

to accompany the program. machine code series. Lister: Make listing programs easy Dots: Pla V the micro or another player at this strategy game. Dump: 1020 pnnter/ plotter routine. Plus: Freebie of the month Scramble Fighter machine code game. .

.

.

l-TBRUARY: Micropainter: Programs to manipulate Micropainter screens. Clock: Interrupt driven clock utility. Flasher: Flashing colour utility. Bounce]: Simple to play, hard to master. Bridge: The thinking person’s card game. Plus: Freebie oi the month: Demon’s lair —

an adventure game you may never escape from.

MARCH: Horse Play: Knight’s tour program. Basic

Compiler- Program Alien Attack: Final

to accompany the new series. if)?“t Of assembly “515719 Plus: Freebie of the month: Winston in the Caves—can you keep your head and help Mnston ?nd his?

symhesm Activate the hidden depths of the Atari sound chip. Disc inda: Keep track of disc files and free space With this index printing program. Graphics: Make the most of Modes 12 and 13. Mancuna: Can you beat the game that learns from its mistakes?

APRIL-

MAY: Cavern Escape: Can you help ln-I—Go Joe escape from the labyrinths with King Muneebag’s gold? Player Missile: Program to accompany the start of the series Spelling- ' Automate thoseweeklyschoolspelling '

tests.

JUNE:

“239m"-

Create hundreds of new mazes for last month 5 Cavern Escape game. Player Missile Designer: Create your own DATA 5 h apes wr'th th‘15 Player/ Missile Edit“- HW “110! 11 Simple Dice rolling bmld it into your own programs. routine _


Profile for Paul Rixon

Atari User Magazine Vol 2 Issue 02  

Atari User Magazine Vol 2 Issue 02 - magazine for Atari home computer users, published by Database Publications.

Atari User Magazine Vol 2 Issue 02  

Atari User Magazine Vol 2 Issue 02 - magazine for Atari home computer users, published by Database Publications.

Profile for prixon
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