This follows cold on the heels of an earlier repair session of a stash of Commodore 1541 FDDs. Testing Commodore FDD head alignment using the 1541 diagnostic cartridge. As with any such devices ...

A devotee of such periphery is [Michael Steil], who was driven to compile years of research, knowledge, and hard data into The Ultimate Commodore 1541 Drive Talk which you can view below the break.

If you’d rather go the ROM route, there’s a spot on the PCB for adding a Raspberry Pi Zero, which allows the Pi1541 Commodore 1541 disk drive emulator to be installed so that software can be ...