Sounds like you want the "software engineering
ROM", though I'm not
certain since I don't have one. I'd really like to get one and dump
the ROM; then it should be easy to make a clone of it. As I understand
it, it's just an expansion board full of ROMs. I don't know how many
I have an (empty) ROM/EPROM module in my collection (HP82971). It's an
Integral expanison PC with sockets for 16 ROMs/EPROMs, and DIP switched
to set the starting address, ROM type, etc.
There is some software on
hpmuseum.net to burn EPROMs to use in this
module (said software runs on the Integral). I've just never got round to it.
The HPUS module in my Integral (I think it's V5.0) is clearly designed to
take a daughteroard contianing another 4 ROMs. Was that ever used for
anything, I wonder?
-tony