HP41 extension ports pinout

[Monte Dalrymple]

(02-13-2019 12:22 PM)eried Wrote:  

(02-12-2019 06:42 PM)Monte Dalrymple Wrote:  What kind of information are you looking for?

In short words: just a basic pinout layout and protocol details for communication with cards. Something clean like what the community did with the HP Prime:
https://tiplanet.org/hpwiki/index.php?ti...ile_Format

Wifi is going to eat the batteries for sure, maybe I can include a small lipo. The esp8266 fits on a 3d printed housing easily and there is space available. I just ordered some NES and Genesis catridge slots to play with the contact assembly first.


I think I have enough for now to start playing/reading. Thanks everyone!

The chapter on "Timing" in http://systemyde.com/pdf/newt.pdf shows how the hp-41C bus works.