...
 Although I assume we can all check our systems and boards and 
come up
  with all of these, wouldnt it be much nicer (and
cheaper) if you just
 get the ROM contents as binary files, which you then plug into an
 eprom?
 --f 
the binaries are around, but finding a eprom might be tricky.
Actually, finding blank roms isn't that bad buy then you have to find a
burner that knows what to do with a 4*256device...
P_