I have been building a 6502 homebrew computer. I plan to do removable storage initially with an AVR controlled SD reader, but would love to do a home rolled floppy controller. To give you an idea of how fundamental I'm willing to go, my video is a VGA controller done with nothing but 7400 logic. I don't HAVE to go that medieval for the floppy controller, but it's not off the table.
I have no need for my disk format to be compatible with anything. Something a modern computer could read would be convenient, but not remotely a requirement.
Also, I'm open to everything from trying to bypass the USB interface on a modern drive, to using a vintage commodore or apple drive. The latter is probably preferable, and I assume more feasible. I think I've read old Apple 2 drives had most of the controller logic built in, whereas commodore drives didn't. I could have that backwards or wrong altogether.
Long story short, I'm having trouble finding resources on how to talk to drives. Any links, or even better, books to look for? I freely admit I'm a crappy Googler, but I have been trying! (Trying to head off the "just Google it" answers at the pass 🙄).
My hope is something I can do with a simple 8 bit MCU. I'm open to basic logic chips too. I've never used an FPGA before. Not against it, but I don't want a pre manufacture FPGA board on my build, and I clearly don't want to try and solder a BGA! I thing FPGAs are out.
I've kinda rambled a bit here. Mostly just want some direction to resources so I can begin my research.