Hi Marvin & Jules
Yep, that is the polymorphic CPU card. The CPU is a 8080 and
the 4 sockets above the CPU are for 2111's. The three sockets
take 2708's. It is missing things like bus buffers. Marvin
or I can get you a schematic. If you get one of the vidio cards
and a parallel keyboard, you can actually do a small amount
( with the 4 2111's as RAM ). The two socket at the upper
right go to a serial buffer card and a cassette interface card.
I do have the schematic for these as well but the cassette has
a couple of chips that may be a real bear to find.
I also have the ROM monitor code and TINY BASIC that will
run on this card.
Dwight
>From: "Marvin Johnston" <marvin_at_rain.org>
>
>
>I *think* this is a Polymorphic CPU card, but I can't get to any of the
>cards right now to make sure. IIRC, IPC was the company name that was
>associated with Polymorphic Systems, and that name appears on most, if
>not all, of their S-100 cards. In checking some of the Polymorphic
>engineering drawings, I.P.C. showed up the one PC Board layout I found.
>
>Jules Richardson wrote:
>>
>> On Thu, 2004-07-01 at 20:16, Jules Richardson wrote:
>> > Random S100 board in the pile. Says "(c)1976 I.P.C" on the underside,
>> > but there's nothing else by way of identification.
>>
>> I've put a small photo up at:
>> http://www.moosenet.demon.co.uk/temp/comps/s100/unknown_s100_sm.jpg
>>
>> any ideas?
>>
>> cheers,
>>
>> Jules
>
Received on Fri Jul 02 2004 - 13:16:36 BST
