I tried to upload programs from an Raspberry Pi 5 to the neo6502pc via the Mod-USB-Rs232 board. I use the Morpheus 1.0.0 firmware preinstalled. On the host side I tried nxmit.py, which gives a success message, but on the 6502 board no reaction. I suppose that I have to give some mon command to make the neo6502 receive the data but I could not find any information about the monitor commands in general and the serial receive in particular. Connecting via CuteCom Terminal on the Pi gives an UEXT Error message in response to typed in characters, thus the connection should be established, only the morpheus software cannot handle the received data. Any help is welcome.
Best regards, Friedrich
Update: Entering / at the command line does not work. It opens the serial connection which is closed as soon as a file is send or anything typed in a terminal program
I'd try with simpler USB-serial cable. Something like:
https://www.olimex.com/Products/USB-Modules/Interfaces/USB-SERIAL-F/
Or anything you can find from local shops, just make sure the data signals are at 3.3V.
If the issue remains post in the neo6502-firmware repo, it is more likely to get help there.