HP41C with Rp Pico attached

[blackjetrock]

(06-22-2023 11:31 AM)ThomasF Wrote:  Hi,

Found some time and connected a Tiny2040 to the 41 with success.
The Tiny2040 is small enough to fit in a small box

I can analyze the bus, decode the display-instruction etc, all through an old module case and connector, so no need to open the 41 (so I'm missing the keyboard events).

Good news. Did you write your own code or use mine?

Quote:I have yet to get the driving of the ISA-port to work, to be able to emulate modules, but so far all good!

(The yellow text is just a test of the 41 font, but the blue text just below is the copy of the actual 41 display,
rest is just debug-info)

Cheers,
Thomas

There's some module emulation in my code, I managed to emulate a couple of modules. Not bank switched ones yet, though.
I have some module case snow and am looking at a PCB that attaches as a module. Maybe with an SD card slot poking out?

Andrew