9010A - mods to pods...

<x-flowed>Well, technically speaking it is not a pod mod, but I did make an adapter
for the 6502 pod to enable me to use that for checking out 6504 based
processors. The main difference between the 6502 and 6504 is the 6504 has
only 12 address lines, and it is packed in a 28 pin package. I used a junk
circuit board that had originally a 6802 and 6821 side by side, cut away
the remnants of the rest of the board, and by adding a ZIF on the underside
of the board in the 6821 mount after setting it to straddle the data pins
correctly, and cutting the other traces. Then jumped the address, power and
a few signal paths. Took about 1 hour start to finish, and it seems to work
just fine.

So now I can service my Allied Leisure MPU boards better. Need to build an
I/O map next...the RAM and ROM test fine, but LOTS of I/O ports need to be
figured out...

John :-#)#

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Received on Mon Mar 27 08:20:52 2000