16 Apr
2007
16 Apr
'07
11:18 p.m.
On Sat Apr 14 2007, Tony Duell wrote:
That's certainly the one I was thinking of...
If you want to run the old programs and get the
feel of the machine
again, I am told there's a pretty good HP98x0 emulator on the web, and
I think it's open-sourve....
I've taken a quick look at this:
http://sourceforge.net/projects/hp9800e/
...and it seems quite impressive. I spent only a little time working with
it, but it appears to emulate the hardware and execute code dumps of the
actual 9800-series ROMs. Most of the option ROMs are included, as are a
number of peripherals. Worth a look.
Yes. That's whu I looked at it. I am wondering about designing an EPROM
module for my HP98x0 machines (should be very simple, actually, the HP
ROMs had TTL compatible address and data lines, it' was just the CE line
that was odd (active high, and 12V level IIRC). The real HP ROM modules
had 4 ROM chips in them (high and low bytes for each of 2 areas with
separate select lines on the mdoule connector), I'd want to use 2 EPROMs
(high and low byte) and fiddle the selects so that the EPROM was split in
hald, one for each select line (if you see wht I mean). A trivial piece
of dseign, the hard part being making the PCB with the right edge
connector pattern.
Anyway, if I did that, I'd need to get some code to stick in the EPROMs,
and that emulator distribution seemed like the obvious place (FWIW, the
author of said emulator fully approvves).
-tony