Just another Rinky-Dink Florida hamfest - test-drb@ccmp.vtda.org

28 Mar 1999

There were several manufacturers of cards shaped more or less like the
S-100.  One of the more common ones was the MOTOROLA EXORCISOR series, which
were MOT's development system for their 8-bit devices.  The way to start
figuring out what you've got is to count the contact positions at the edge
connector and determine the pin spacing.  The S-100 used 100 contacts at
0.125" spacing.  It also had on-board voltage regulator(s).

Dick

-----Original Message-----
From: Marvin &lt;marvin(a)rain.org&gt;
To: Discussion re-collecting of classic computers
&lt;classiccmp(a)u.washington.edu&gt;
Date: Sunday, March 28, 1999 1:05 PM
Subject: Re: Just another Rinky-Dink Florida hamfest

...

Joe wrote:
>
>   RATS!  I think you're right!  I just brought it in and checked. The
slots
...
 > are wider than S-100 and the card sockets are
offset to one side so S-100
> cards hit one edge and won't go in.  It also has a switcher power supply
so
...
   it is
regulated off the cards.  Too bad, it is really a nice box.  I may
 modify it back to S-100.  Anyway what can you expect for $3? 
I am just curious what the size of the slots are.  I have a couple of cards
that I thought were S-100 when I got them, but they are a bit narrower than
an S-100 card, and the fingers are wider. The dimensions of these cards are
8 3/4 " wide, 4 1/2 " high (excluding fingers), 7 5/8" finger width with
5/8" to the edge of the card on left side (component side up) and 1/2" to
the edge of the board on the right. The one I just grabbed says "638493
Digital Timer" on the solder side of the board. 