4 May
2001
4 May
'01
5:45 p.m.
From: John Ott <jott(a)hamming.ee.nd.edu>
I don't have your email address. So, do you still
have the schematics
of your 2901C version of the z80? Have you done any stack based cpu's
with bit slice chips? (e.g. something to run native forth code on )
john
I do still have them. No, I wont publish the notebook that contains the
collected wisdom. I did this a lot of years ago.
My $.02 2901 was an ok device but slow and turned out to the the
speed limiter. Also the microcode for was a pain! Never did a stack
cpu though the PDP-11 does that very well as is.
Allison