HP41 TULIP4041 update

[John Keith]

(10-31-2024 11:26 AM)MeindertKuipers Wrote:  - an RTC is foreseen for TIME emulation,. This requires an external battery and adapted housing

You might want to adapt the RTC battery that RPi sells for the Pi 5 if it is compatible with the Tulip circuitry.

Also, at the risk of heresy, I note that you have here a dual-core ARM CPU with an SD card connected to the HP-41. This would allow the 41 to call external programs written in C or Python if a suitable software interface could be provided.

Please ignore the comment above if this is already part of the design, I am not an HP-41 person and I haven't been following Tulip development that closely.