help identifying S100 board

From: Ian Primus <ian_primus_at_yahoo.com>
Date: Tue Nov 11 19:12:13 2003

On Monday, November 10, 2003, at 09:06 PM, Patrick Rigney wrote:

>> -----Original Message-----
>> On Monday, November 10, 2003, at 07:58 PM, Dwight K. Elvey wrote:
>>
>>> Hi
>>> This may not even be a s100 board. The height is wrong. Check
>>> the power leads carefully before plugging into a s100. It
>>> does seem to be a complete single board computer.
>>> Dwight
>>>
>>
>> Yeah, I had thought of that, as the only S100 boards I have seen were
>> shorter, but then again, I don't have any S100 hardware, so I don't
>
> Connector offset looks about right though, doesn't it? Didn't a
> company
> called Dynatech buy Cromemco?
>
> Patrick
>

I did some more digging on the internet, and found this:

Cromemco
Was acquired by Dynatech, Inc, Burlington, MA and was renamed DCS
(Dynatech Computer Systems) continuing to produce S100 based systems
into the early 90's before they were shut down.

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...

Ian Primus
ian_primus_at_yahoo.com
Received on Tue Nov 11 2003 - 19:12:13 GMT