S-100 prototyping boards

From: Richard Erlacher <edick_at_idcomm.com>
Date: Sun Mar 21 21:17:42 1999

Actually, I used to sell an original wirewrap board which has a colander
ground and power plane and a 0.100" matrix of plated through holes. That
was how all my wirewrap boards were configured, so I could use whatever dip,
pin-grid array, or idc connector I wanted without concerning myself with
whether it would fit. Of course, back in the S-100 days one didn't have to
worry about the off-grid connectors like the DA-15 or the DB25. These
boards had dry-film solder mask so you could use bare-wire point-to-point
wiring for layout sensitive analog circuitry, keeping it close to the
low-impedance ground or Vcc plane without fear of soldering to that plane.
I'll have to see if I can still find those old films.

-----Original Message-----
From: Sergey Svishchev <svs_at_ropnet.ru>
To: Discussion re-collecting of classic computers
Date: Sunday, March 21, 1999 7:34 PM
Subject: S-100 prototyping boards

>On Sat, Mar 20, 1999 at 12:34:22PM -0700, Richard Erlacher wrote:
>> From what I've observed the 100-pin
>> card-edge connectors are pretty common. I really don't know why, but
>> are. Every time I look at the local surplus parts house, I see those old
>> connectors, in the same box they were in 20 years ago, even though the
>> has moved 3 times, with the label "S-100 Connectors, $3.95."
>And Douglas Electronics still sells S-100 prototyping boards:
>Sergey Svishchev -- svs{at}ropnet{dot}ru
Received on Sun Mar 21 1999 - 21:17:42 GMT

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