HP Classic upgrade kit - Multi Emulator (updated list of emulated models)

[teenix]

(04-03-2019 03:05 PM)Harald Wrote:  Very nice! I would like one of those please

The 65 is quite different as it uses the classic display drivers. But maybe we can combine my display driver software with your card reader software. That would be brilliant! Maybe we could even use the card reader for storing programs for other emulated calculator models.

Cheers,
Harald

A possibility. Card wise, I actually think in the 65's case the interface will be easier than the 67 as I have control of the CPU.

I recently struck a problem though, I think similar to Alberto recently, in that the card RW chip seems finicky to interface to. As it is a bi-polar chip, I'm not sure of the IO pins requirements yet as regards interfacing to CMOS so I'll need to experiment a bit more.

cheers

Tony