11 hours ago
The usb option uses a cheap interface board from aliexpress with a ch376 chip but it only works with a small program running on the bee for file transfer. It doesn't require any bios mods and it was never integrated into cpm.
Most of the info is available here.... https://www.microbee-mspp.org/forum/viewforum.php?f=87
Most of the info is available here.... https://www.microbee-mspp.org/forum/viewforum.php?f=87
