On 9/27/21 10:05 AM, dwight via cctalk wrote: > Most of these older fused PROMs are of comparable speed in newer > EPROMs or E2PROMs. Open collector is a hassle but not too much. One > can create the needed circuits using surface mount parts for size > reduction. A hassle but not out of the question. You usually have to > go to a larger ROM size so it can be used for additional storage with > a switch or jumper select. In some cases, if you're handy with logic tables, it's sometimes possible to program a GAL to act as a bipolar PROM substitute.
--Chuck
