HP 2100A Restoration
COURYHOUSE at aol.com
COURYHOUSE at aol.com
Wed Aug 3 04:19:27 CDT 2016
yes we used to at computer exchange inc... we had a bunch of blank I/o
boards with the i/o special chips traces on the corner of board we
would populate that portion then built out the rest..... rest of board
was like a prototype board I scored a stack of them at a san jose
computer junk show one time.
we have voice synth that would plug into ho using natl. digitaker chip
set built onto one of these i/o proto boards.... they were all gold
plated etc.... which I still have some... we do have the first talker
we built though ... if you score some of these boards most of the
startup of the project is taken care of!
ed# _www.smecc.org_ (http://www.smecc.org)
In a message dated 8/2/2016 2:10:16 P.M. US Mountain Standard Time,
perlpowers at gmail.com writes:
On another note, has anyone ever tried making their own I/O boards for any
of the 2100 series computers? The closest I found was
http://newton.freehostia.com/hp/ where he makes a paper tape emulator and
disk interface. However both of those are designed to connect to an
existing I/O board like the "microcircuit interface". I haven't seen
anything yet on how to interface to the I/O bus, but then again there are
thousands of pages of manuals still to browse through.
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