Looking for Checkmate "CPU port" card (65816) or Applied Engineering 65816 card

[Ralph Hyre]

There were a few folks using these back before the Apple //gs was
shipping, but I haven't seen one for sale on ebay recently.

These were cards which supported replacing the 65c02 in the Apple //e
with a 65816 processor, but with no other //gs features.

Any leads appreciated

- Ralph Hyre

[Michael J. Mahon]

Post by Ralph Hyre
There were a few folks using these back before the Apple //gs was
shipping, but I haven't seen one for sale on ebay recently.
These were cards which supported replacing the 65c02 in the Apple //e
with a 65816 processor, but with no other //gs features.
Any leads appreciated
- Ralph Hyre

Another somewhat simpler approach is to find a 65802 processor--an 8-bit
interface 65816 in a package with pinout compatible with the 6502.

They used to be medium available, but are now pretty rare.

[Andrew Roughan]

Post by Ralph Hyre
These were cards which supported replacing the 65c02 in the Apple //e
with a 65816 processor, but with no other //gs features.

I used a 65816 in my platinum //e without an adapter for many years. Yes,
the pin outs don’t match completely, but it worked.

A2Heaven have a 65C816 -> 65C02 board for $35

Regards
Andrew