HP-IB Census

(4) I recently wanted to capture the contents of a ROM that was soldered into a board. I didn't want to unsolder it, so I used by HP 1631D logic analyzer to monitor all the pins while the computer was driving it with a test program that made sure every address was getting hit. I used my hp87 to drive the logic analyzer via HPIB and repeatedly sampled the pins, analyzed what was captured and repeated until I had seen all addresses. Finally I dumped the final ROM image to my PC via the serial adapter. It took me about four hours to figure out how to program everything, having never done it before. it would have been very useful for me to have seen other such code before I tried mine. I'd be happy to give you my program in case somebody else finds such a thing useful.