Hi everybody. I have just written up construction notes on this 80286 CPU board. Please see here:- for details:- http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%20Board.htm Unfortunately there are some strange issues with the board running with RAM boards other than our 4MG Static RAM board (described here:-) http://www.s100computers.com/My%20System%20Pages/RAM%20Board/4MG%20RAM%20Board.htm 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 John |