MCA Term-End Examination June, 2005 MCS-012:
COMPUTER ORGANIATION AND ASSEMBLY LANGUAGE PROGRAMMING
Time: 3 hours 100
Maximum Marks: (Weightage 75%)
Note: Questions number 1 is compulsory and carries 40 marks. Answer any three questions from the rest. 1.
(a) (b)
Simplify the following Boolean function in SOP form using K-map: F(A, B, C, D) = (0, 2, 4, 6, 8, 9, 10, 11, 12, 14)
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A memory chip (RAM) is shown below: CSI CS2 WR
4096 X32
Data bus
RD (RAM)
Address Lines
AD
Give the answer of the following questions:
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(i) (ii) (iii) (iv)
How many address lines are there in this chip? How many data lines are there in this chip? What is the word size of RAM chip? What is the capacity of RAM chip in bytes?
(c)
An instruction is stored at location 300 with its address field at location 301.The address field has the value 400. A processor register R1 contains the number 200. Evaluate the effective address if the addressing mode of the instruction is: (i) (ii) (iii) (iv)
(d)
Direct Register Indirect Relative Index with R1 as index register
Find the range of a number for the following floating point representation: Base is 2 Exponent - 8 bits, bias of 8 is used Sign bit = 1 87
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