11 Dec
2005
11 Dec
'05
11:11 p.m.
Allison wrote:
If I were building TTL again nothng less than 24bits.
;)
From the quick note scratching a small Bit Slice 12/24 bit cpu looks
rather
simple. Two modest sized ALU 12 bit boards and ROM based Control unit.
Memory would peg out about 1 meg without a MMU.
A 6800/6502 memory cycle would be used, with setup for R/W, VMA
FF's from the PROM at about 150 ns giving a 1.5 MHZ memory cycle.
Allison