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S-100 80286 CPU board write-up

Hi everybody. I have just written up construction notes on this 80286 CPU board.

Please see here:- for details:-



Unfortunately there are some strange issues with the board running with RAM boards other than our 4MG Static RAM board

(described here:-)



With that RAM board,  the 80286 is rock solid at 11MHz (no I/O or ROM wait states required).


Please see the bottom of the page for details.


I am traveling all of next week but will explore further when I get back.

Sorry about the bad news