On Jan 2, 2006, at 8:50 AM, VULCAN20 wrote:

> Some of it may be of interest to people on the list.  He does not
> want to charge anything for the stuff, due to him not remembering its
> working condition and just go to someone who might use it if they can.
> The board powers up and has life to it.  display  shows data  I.E. on
> power up  -  80  85.   press single step  0347  FE.
>
Sounds like an Intel SDK-85:
http://www.chookfest.net/computers/SDK-85.html

IIRC, those are pretty software-intensive designs; the fact that
you get a reasonable display on powerup and behavior on keypresses
means that quite a bit is working...  There are a couple of published
texbook-style books and some online courseware that do "microprocessor
education" based on this board, but I couldn't find any of the
original documentation.

The 8085 was a cute little processor; probably the second one to
capture my imagination in my early days.  8080 compatible, but with
an easier hardware interface.  A three-chip system with ram, rom,
and a bunch of IO available was possible (using intel chips that
combined memory and IO functions); it looks like this board is
based on that design with added keyboard/display controllers...

BillW

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