Minimal CP-M SBC design
lee at geekdot.com
Sun May 4 23:03:16 CDT 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,
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