16 Nov
2006
16 Nov
'06
3:26 p.m.
- A Trash Compactor Board (A TRS-80 Model III Clone
that fits in a Model
I case)
Some 20 years ago I got Model 3 BASIC burnt into an EPROM. I then hacked
a Model 1 CPU board to support the extra ROM space (14K .vs. 12K), and
have 48K RAM (using 4164s which were easy to find at the time, hacked the
address decoder and pinout (slightly). Yes, it worked. I was then going
to wire-wrap boards to add the disk controller, real time clock
interrupt, 1500 baud cassette port, RS232 port, etc. Essentially make a
Model 3
What stopped this project was that at the next radio rally (hamfest) I
bought a Model 3...
-tony