----- Original Message -----
From: "Ian Primus" <ian_primus(a)yahoo.com>
That would fit with the boards I have, since the
copyright date is
1990. I need to sit down and trace out more of the circuits on the
board, but it definitely does seem to be an S100 board. I have tried to
figure out what the two 26 pin headers at the upper left are connected
to, but I can't see under some of the components. They do appear to be
serial ports, but I don't know which pins would contain which signals,
so wiring it up to a terminal might be tricky. Maybe if I look up the
specs on the UART and the 1488/1489 driver pair, I can figure out how
their circuit works, and where I can tap into the signals. Powering the
board shouldn't be a problem, since I can easily tell how the power
regulators are connected. Now, if only I knew what this thing did...
If they are 26 pin headers, I wonder if you put a ribbon cable connector on
one, with a ribbon cable version of the DB-25 on the other end (pin 1 to pin
1), whether it would "just work"? Some of the S-100 stuff was like that.
Vince