Minimal CP-M SBC design - test-drb@ccmp.vtda.org

4 May 2008

...
  On a tangent, I am curious: how difficult is it to
make some form of
 CP/M-68k work on a bare-bones 68000 or 68008 system? 
I've made a BIOS that seems to work and that fits in less than 2K.

The thing I can't seem to do is find all the parts to make up a boot
image to let me use a CP/M-68K C compiler to compile the sources to
the parts I need to make a boot image.

...
  What does CP/M-68k expect in RAM, ROM and I/O
locations? 
It seems to expect to run in RAM, I/O is abstracted through system
calls using TRAP #3

...
  Can't even remember if the DTACK grounded trick
works on the 68008, 
It does.

Lee.