Andrew Lynch wrote:
  I've found a good circuit with a complete
schematic and description.  It has
 some firmware and appears complete.  Also it is public domain hardware and
 free (speech -- GPL) software so it is an ideal home brew project.  It makes
 sense to me to do a little research and select an established home brew 68K
 project and use it as a base to extend to the ISA board rather than reinvent
 the circuit entirely.
 Thanks and have a nice day! 
But would it be useable? I can see a home brew 68K running OS/9 (microware)
software as fast multi-tasking system. The problem is all the 68K
systems I can think of, was basic in ROM or some sort of graphics
computer like the Mac. ( Classic Mac with 128KB of memory ).
  Andrew Lynch
 
Ben.