Hi!
The cards were called Spacemakers and were made by CGRS Microtech. These
cards allow you to add 8K of RAM or ROM in the address space $9000..$AFFF of
dynamic PETs. The card is 4 1/4 by 2 5/8 inches and has a 24 pin plug on one
edge so that the card can be plugged into the $A000 ROM socket. All the cards
I have are populated with 4K of RAM. One has a battery backup system.
But these cards may not be of use to anyone as I am not, at the moment,
able to find documentation as to how to connect the four clipon connectors to
the proper points on the PET circuit board.
My location is New Jersey, just across the river from Philadelphia,
Pennsylvania.
Willi
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