<Storage> 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)