Found interesting stuff while searching GOOGLE.

[aiiadict@hotmail.com (Rich J.)]

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3]"SLOTWARE" by MicroTek Inc. This card has a 5 foot 4 inch ribbon cable 25
wire connected to a 36 pin centronics style connector. The card has two
jumper blocks. One saying "+5" and "GND" at the two differnt locations, each
with a picture of a square wave next to it(on inversed). The other jumper
block has a square wave picture next to each location, but on is at a higher
frequency than the other. Next to the ribbon cable connector block "CIRCUIT
LAB" is screened on.


Information????

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Doing research on the net I've found that there is an Apple II
logic simulator called "circuit lab".  I've found the author but
he doesn't have a copy of it anymore, and nobody else seems to
have a copy.

Could the above mentioned card be associated with the program?

With the square wave drawings, it sounds like a very interesting
card.

It sounds like the first block of jumpers mentioned  
probably just reversed the polarity
of the signals for different printers.

I don't have any ideas what the other jumpers are.  Higher frequency..
Strobe length?  

Any ideas why Circuit Lab was printed on the cable?

Rich