6 Jul
2007
6 Jul
'07
8:27 a.m.
Questions: have any others on here done stuff like
this, or have any
pointers to good resources? I'm learning as I go along here, flicking
through technical manuals for 8-bit CPUs etc. and gleaning what I can
from the web.
I made, in 1986, a 12 bit machine with raw TTL.
Switches as input, 4 nixies as output, ca. 120 IC's.
Parallel, with 3x181 as Alu, 3x194 as accu/shifter, and a dedicated
hardware stack separate from the main 4Kx12 memory.
Actually building and debugging it was the hardest part.
Go for parallel, it is easier and will not be that more expensive in
partcount.
Let me know if you want my schematics
Jos