passing values from lines in a file directly to two digital I/O board (6534 type)

[Dave S.]

I need the simplest method of using two 6534 cards for a memory (UUT) test. I want to write (byte-wide) a pattern into the memory, then read it back and verify it matches the value written. Things that change are: Address inputs (increment by 1 for each read/write) with the control signals (card 1) and data values read (card two). If I detect a mis-match, the test stops, I read the location one more time and verify it's really incorrect, the correct value is written back into the same location just read, a counter is incremented to keep track of the total errors detected and the test (memory read/verify) is resumed. Each time through the memory another counter is incremented to track the n
umber of passes through the memory read test

[bman]

Dave

Check out chapter two of the 653x User Manual for information on the different modes of operation. There it explains the difference between strobed and unstrobed I/O as well as Pattern I/O and Handshaking. It sounds as though unstrobed should work unless your UUT requires hardware timing or handshaking. You will have to keep track of errors in software however since the 6534 does not have any counters on it.

Brian