Commodore 1541 1541 <storage> The best known {floppy disk} drive for the {Commodore 64}. The 1541 was a single-sided 160 Kb drive but converting to {flippy disks} would give another 160 Kb. The disk drive used {Group Code Recording} and contained a {6502} processor as a {disk controller}. Some people wrote code for it to vibrate the head at different frequencies to play tunes. The transfer rate was about 300 bytes per second. The 1541 used a {bit-serial} version of the {IEEE 488} parallel protocol. Some third-party speed-ups could transfer about 4 kilobytes per second over the interface, and some "fast loaders" managed up to 10 kbps. The {Commodore 1570} was an upgraded 1541 for use with the {Commodore 128}. (2000-03-07)