Re: Can you identify these cards?

[Michael J. Mahon <mjmahon@aol.com>]

BLuRry <brendan.robert@gmail.com> wrote:
> On Wednesday, March 13, 2013 10:06:38 PM UTC-5, RJ wrote:
>> Hey All,
>> 
>> 
>> 
>> I recieved an Apple IIgs from a person that found the computer in an old
>> abandoned warehouse that was going to be demolished.  He does not know
>> what the warehouse was used for as alot of the equipment was already
>> vacant.  Anyways here are some pictures of the cards, hopefully someone
>> may know what these are and how they are used.  As for the IIgs, it
>> works fine, a little cruddy and yellow but it boots up.
>> 
>> 
>> 
>> first card
>> 
>> http://e21.tricord.be/members/Misc/P1020350.JPG
>> 
>> http://e21.tricord.be/members/Misc/P1020351.JPG
>> 
>> 
>> 
>> this card actually had two more identical in slots 1,2
>> 
>> http://e21.tricord.be/members/Misc/P1020353.JPG
>> 
>> http://e21.tricord.be/members/Misc/P1020354.JPG
>> 
>> http://e21.tricord.be/members/Misc/P1020355.JPG
>> 
>> 
>> 
>> any help would be appreciated, thanks.
> 
> Those look like scientific and/or automation related.  The first one has
> a large prototype area which seems the be the whole point of it so maybe
> for prototyping.   The second one has two 6522 chips on it which are
> interface/serial vias that must interface the pins that line the top of
> the card.  I would imagine these must have been interfaces for other
> specialized equipment but I couldn't fathom a guess as to what.
> 
> -B

The first card is a multichannel analog-to-digital converter, used for
measuring voltages and/or sampling waveforms. 

The other cards are parallel in/out port cards, each providing four 8-bit
ports with handshaking. The 6522 VIAs also support interrupts and two
timers, plus a shift register for serial I/O. 

Clearly, this system was used to control some lab--or
production--equipment. 

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon