Mystery card - help!

[Barton Oleksy <boleksy@nait.ab.ca>]

Another one for you experts to help out with...

This is a card made by Adaptive Peripherals, with a battery holder for 2
AAA batteries on the back.  Made in 1984.

The front is filled with various chips and has a ribbon cable that goes
to a small white box that attaches to the side of the system unit.  This
has a toggle switch next to a red light, two small jacks (1/8"?), and
what looks like a Centronics-type connector.

Any ideas?  CC to e-mail as well as post replies, please - I can't
always get to the news server when I want to.

Pictures at the links below:

Back of the card:
http://www.cst.nait.ab.ca/staff/boleksy/images/back.jpg

"long" shot of card, cable, and box:
http://www.cst.nait.ab.ca/staff/boleksy/images/card1.jpg

Closer shot of the box:
http://www.cst.nait.ab.ca/staff/boleksy/images/box.jpg

Thanks for your help!

Bart