HP-85 Rom Emulator

From: Bryan Blackburn <oldcomp_at_cox.net>
Date: Wed Dec 10 17:52:28 2003

I have a picture of an Ohm meter I could email you. :)
-Bryan

Bill Kotaska wrote:
> I'm working on a ROM emulator for the HP-85 - i.e. a replica of the
> original (and hard to find) Programmable ROM Module. From photos
> (thanks to Vassilis Prevelakis), I've drawn a schematic of most of
> the original module. But I've hit a snag where some of the traces
> disappear under the ICs. I've been able to deduce most of these but
> some are too ambiguous to "pin" down. Is there someone who owns this
> elusive module that would be willing to ring some paths for me
> (probably 10 to 20) ? Some connections may be obvious simply with a
> closer visual inspection of the actual module.
>
> Thanks, Bill
>
Received on Wed Dec 10 2003 - 17:52:28 GMT