I spent last evening with a friend hacking on my HP-2112A. We got it up
and running! Still no work on the peripherals. It does have a sticky bit
that I've not yet tracked down, but I presume that's another bad
connection someplace. At any rate, I got a simple delayed binary counter
running that dumps to the S register.
I powered up the 2108 as well running a chaser routine:
http://rikers.org/hp2100/hp2108a2112a.avi
Assembly sources are in that same directory if you are curious.
http://rikers.org/hp2100/
One step closer to running ACCESS on real hardware. =)
It looks like SIMH has IPL issues under Linux and probably other OSes. I
can get ACCESS running in windows but not under Linux. I'll spend some
time debugging that soon.
I don't have the hardware for the IPL so I'll need that someday. I
understand that I need 4 12566 cards and some custom cables. I bought a
few cable ends from larry of ebay and I have these two cards:
GND TRUE IN/OUT - 12566-8001, 12666-6001 907 22
+TRUE IN/OUT - 12566-8001, 12566-6002 907 22
But I only have 2. If anyone has others that they might want to trade
boards for I might be interested. ;-)
At some point I'll likely need the IOP firmware but I know Jay has it so
I'm sure we can work something out there.
Also need the breakout panel for my MUX set at somepoint. At least I
need the edge connectors. They are the same size as the normal edge
connector, but use a higher pin density.
Leads welcome!
Hardware pictures:
http://rikers.org/hardware/
I'm often on #classiccmp on
irc.freenode.net as TimRiker. Join us. ;-)
--
Tim Riker -
http://Rikers.org/ - TimR at
Debian.org
Embedded Linux Technologist -
http://eLinux.org/
BZFlag maintainer -
http://BZFlag.org/ - for fun!