On 3/20/21 7:56 PM, Darren Clark wrote:
I think an Arduino (328P) would have enough horsepower to emulate the
TPPD protocol and read/write to a SD card. Could probably even burn the
utilities disk image to the 328P and start it up in "utilities" mode to
download the disk manager to the 100 or 200.
There are already a couple such projects.
I did one based on the idea of using an off-the-shelf microcontroller
dev board that already has an sd card reader and uarts and lipo battery
manager built in (and/or getting power from the BCR port), and the only
part you have to make is just enough adapter to attach the dev board to
the 100 (a pcb with a db25 and max3232 and caps). The idea was to make
it where you can build it yourself because the part you build is
limited. It does tpdd emulation including a bootstrap mode to install a
dos. It's a bit shaky still but the basics are there & working.
https://youtu.be/LTtkjnuTSZw
Someone else is just finishing a different approach where he designed a
custom board with everything including the mcu.
https://www.facebook.com/groups/Model.T.Computers/permalink/4297639010296577
--
bkw
