Hi all!
Thanks to everyone who supplied information regarding the differences
between the 6550 and 2114 (especially Ethan who supplied pinouts).
I'm wondering if it would be possible to replace the RAM in an old PET
with a modern SRAM by use of some kind of plug-in adapter.
An example of what I'm thinking of is the SIMMfonie or AmiFast Zip-to-SIMM
adapters for the Amiga 3000. Could something like this be built that
would plug into the 16 22-pin sockets on the PET motherboard, and lead to
a single modern SRAM? Possibly with the addition of a couple of clip-on
leads to get two more address lines to the RAM adapter so that the PET
could have 32K.
My general preference is to keep things original, but functional is always
better than non-functional and something like this adapter would be
removable if I ever found the proper chips.
The life of a chicklet-keyboard PET may depend on this. :)
--
Doug Spence
ds_spenc_at_alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/
Received on Sun Nov 22 1998 - 04:18:41 GMT