This is soon to be an SCSI controller interface for my TRS-80 Model 4P.
I made this RS-232 driver module (for MAX233 or compatible) in about 1 hour.
FORTH-based controller (6502-based).
The Rockwell F65F11 -- my very first wire-wrapped computer (..still have most of it).
Clock generator, 8_Mhz input, 2 cascaded LS161 counters and a 4020 (with pullup).
This can generate many different clocks -- lots of outputs!
And what's this!?
a DIY-Z80..? almost.
(..full project coming soon. Stay tuned).