Ciarciaʼs Circuit Cellar
Byte Magazine, May 1984
Notes: One 100n decoupling capacitor on each IC. N/C denotes No Connection.
The Z8515 chip might be hard to get hold of. It does some kind of complex clock-stretching.
ADD2 adds two wait states.
Most of the chips features are unused. I think the CPU clock could be managed much like the clock stretcher in the 6502 design.
The Z8000
Simple.
Simple.
Adds wait states for slow memory.
Simple.
Quite clever, uses 2K RAM and a '393 counter for the address lines.
Simple.
DRAM is easily replaced by SRAM these days.