101:T7cc,Chapter 25: Trace System MegaCore Function Operating the Trace System from System Console 25â€“7 Table 25â€“4. Trace System Commands (Part 2 of 2) Command Arguments trace_read_monitor trace_write_monitor trace_get_max_db_size Function Reads a 32-bit value from configuration space within the specified monitor. Refer to the trace monitor documentation for the register maps. Writes a 32-bit value from configuration space within the specified monitor. Refer to the trace monitor documentation for the register maps. Gets the maximum (in memory) trace database size set for this trace system. If the trace database size exceeds this value, then the oldest values are discarded. trace_set_max_db_size Returns the current maximum trace database size. Trace database sizes are approximate but can be used to prevent a high data rate monitor from using up all available memory. trace_start fi fo Starts capturing with the specified trace system in real time (fifo) mode. trace_stop Stops capturing with the specified trace system. trace_get_status Returns the current status (idle or running) of the trace system. In future, new status values may be added. trace_get_db_size Returns the approximate size of the database for the specified trace system. trace_save Saves the trace database to disk. Loads a trace database from disk. This returns a new service path, which can be viewed as if it is a trace system. trace_load However, at this point, the start, stop and other commands will obviously not work on a file-based node. If you load a new trace database with the trace_load command, the trace GUI becomes visible if it was previously hidden. July 2012 Altera Corporation Video and Image Processing Suite User Guide102:T68c,A. Avalon-ST Video Verification IP