Hand-rolling a CP/M machine

25 Apr 2007

...
   You can copy
the screen logic for TRS80 as that is a basic 64x16 as well.  Good thing to keep in
mind. 
Well if anybody is doing VDM-1's the big problem is that you can't find
the Character ROM any more. I like the idea of TTL display like VDM-1
but since this is not the late 70's a 80x24 screen is reasonable
and the data out is a simple VGA format, since the monitors are easy to
come by.

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Hand-rolling a CP/M machine