[Simh] Re: [Simh-dev] Where next?

[J. David Bryan]

On 23 Aug 2004 at 14:32, bsupnik at comcast.net wrote:

> HP2100 - 7905/20/25 disk debug

Count me in for this.  ;-)

I'm also doing some preliminary research for an HP 12792 8-channel terminal 
multiplexer implementation.  The problem is that I have found no 
documentation on how the card was programmed by the CPU.  The reference 
manual has schematics, but the card has an on-board Z-80 processor, and 
there's no ROM or command set listing.  The diagnostic source doesn't help 
either, as it simply downloads a binary program to the card for execution.  
There's a little bit of information in the RTE driver source, in the form 
of usage examples.  If anyone has any information on this card beyond what 
is in the user manual set, please let me know.

(I have a ROM dump from a card in my possession, so reverse-assembling the 
code would be possible, but a commented listing or a prose description of 
the command set that the card implements would be a lot easier to work 
from.)


> HP3000 - which version? software?

I'd be interested in helping with a simulation of the "classic" 3000 (the 
stack architecture, e.g., a Series III), but I know nothing about the 
internals of these machines, as I've never owned one.  I believe that Mike 
Gemeny has some sysdumps of 3000 machines on tapes in his basement, but a 
set of hardware diagnostics sources sure would help with the 
implementation.

                                      -- Dave