The best kNow 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)