why was the wand made?

[ThomasF]

(08-16-2024 03:07 PM)John Ioannidis Wrote:  I don't see any code, just a description.

Yes, I never bothered to document the ROM, I just disassembled the ROM and used it together with MCode traces from running a real 82153 in my 41 to be able to see how the wand worked while scanning a bar code.
And by looking at the code and the traces, I figured out how the API to the hardware worked, turning on the NUT, the handling of the buffer, checksum calculation etc so I could implement a corresponding API in my Pico code to emulate the Wand successfully.

Maybe one day I try to compile my notes and findings and try to add it to the assembly code to create and publish a VASM listing of the Wand - just as I did with Blinky (82242) - maybe on a rainy day but it is not currently on my to do list ...

Cheers,
Thomas