21MX proms (per request)

Jay West jwest at classiccmp.org
Sun Sep 6 14:00:58 CDT 2015

Alexander wrote...
Intersting to note: many times i have used eproms in place of these proms.
Usually, flash parts are faster, so better suited to the task.

Loader roms:
You may be able to get by with that on loader roms. I've never found eproms that were functional & pin compatible. What ones did you use for the 1K variety?

I doubt seriously the eproms would be stable for microcode. HP specs 5ns speed parts for the microcode; what eproms work and can hit those speeds? I suspect this is one of those "might seem to work" but is a really bad idea.


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