HP41C with Rp Pico attached

[MeindertKuipers]

(07-06-2023 06:25 PM)blackjetrock Wrote:  Do you have your PIO code design somewhere? I'd be interested to see it. I think it will be a challenge.

Andrew

No useable code yet, just a rough design in an excel sheet. I think it is doable using both PIO blocks. The ISA capture (and timing) takes almost all of one of the PIO blocks, and it looks like I will need to use at least one additonal external GPIO to sync between both blocks, which is useful for debugging anyway.