Pi1541 is a real-time, cycle exact, Commodore 1541 disk drive emulator that can run on a Raspberry Pi 3B, 3B+ or 3A+.
Since V1.21 there are versions that run on an overclocked Raspberry Pi 0. Others have even had success running the PI0 version on an overclocked original Pi1.
Commodore 1581 emulation supported since V1.13 and V1.22 for the Pi Zero!
The software is free and I have endeavored to make the hardware as simple and inexpensive as possible.
Pi1541 provides you with an SD card solution for using D64, D81, G64, NIB and NBZ Commodore disk images on real Commodore 8 bit computers such as;-
Commodore 64
Commodore 128
Commodore Vic20
Commodore 16
Commodore Plus4
I got a ready made board a while back and it works brilliantly on the Plus/4.