28 Oct
2018
28 Oct
'18
12:49 a.m.
Hello Everyone,
We found a PDP-11 QBUS card cage with a KDF11 and some other cards (RAM,
ROM, some basic peripherals) which included a DSD-4140 card.
Unfortunately, the DSD-4140 is missing one of it's microcode PROMs for
some reason.
Does anyone else have one of these cards? It'd be really helpful if we
could get some dumps of the 4 microcode PROMs so we can compare what we
have and look into replacing what we don't have with an adapted modern
part. (and if anyone goes to the trouble to read the 4 microcode PROMs,
there's also an 82S137 that deserves to be dumped).
Here's a picture of the card in question: https://i.imgur.com/tzYjPYF.jpg
Regards,
Joe Zatarski
