Following up on this thread from last July:
I found the 1989 mc magazine article on the 68K ISA coprocessor board.  I
have the article and have gone through it.  Instead of an PC/XT ISA
coprocessor, I've decided to pursue an S-100 68K CPU board based on the one
in the "68000 Microcomputer Systems: Designing and Troubleshooting".
Thanks!
Andrew Lynch
  -----Original Message-----
 From: Andrew Lynch [mailto:lynchaj at 
yahoo.com]
 Sent: Saturday, July 10, 2010 5:49 PM
 To: 'cctalk at classiccmp.org'
 Subject: 68K ISA project
 Hi! Just out of curiosity does anyone know of any home brew ISA bus 68K
 boards?
 I've seen numerous home brew 68K projects of varying styles but none meant
 to plug into the PC/AT ISA bus. I tried Google but nothing obvious turned
 up. Ideas/URLs appreciated.
 Thanks and have a nice day!
 Andrew Lynch
 PS, something like this but with more detail
 
http://john.ccac.rwth-aachen.de:8000/as/pcpar.html