Wanted: Processor Technology GPM card...
wh.sudbrink at verizon.net
Tue Feb 17 21:01:03 CST 2009
Jim Battle wrote:
> Bill Sudbrink wrote:
> > Reposting due to the resounding lack of response and the
> > possibility that something went wrong with the list right
> > after I posted the original...
> > I can buy or trade but I would prefer to trade. I have a large
> > collection of S-100 cards and some other goodies to work a trade
> > with. If it has the CUTTER ROM, all the better. If not, I can
> > burn a 2708 (and I'll probably post a "Wanted: CUTTER ROM dump"
> > message).
> > Thanks,
> > Bill Sudbrink
> > PS... To engender some discussion, does anyone on the list have
> > an operating Processor Technology Subsystem B machine?
> Bill, I don't think I ever saw a GPM card in my years of Sol collecting.
> There might have been one on ebay once, but it is a vague memory. The
> appear to be exceedingly rare, which is probably the bigger reason why
> your inbox wasn't flooded with offers. ;-)
Honestly, I was hoping that there was a spare one rattling around
in the recently acquired Bob Stek collection and maybe the new owner
might consider trading for a full set of Cromemco or Compupro cards.
> As I recall, the GPM card was situated in the same address block as the
> NS disk controller, so you couldn't have both in a system without
> relocating one or the other.
Based on my reading of the docs on Dave Dunfield's pages, it seems
like it should end up looking just like a Sol with Cutter at C000
and 1K of RAM at C800. ALS-8 (or anything else in the other EPROM
sockets if installed) does end up at higher addresses, but you can
PHANTOM it out. I have everything else for a Subsystem B (now
including a restored parallel ASCII keyboard attached to the 3P+S),
except the GPM. My goal is to display the operating Subsystem B
side-by-side with my Sol at VCF East this year, running the same
More information about the cctalk