<Storage> Commodore BuSineSS MachineS' S "advanced" {diSk drive} for the {C128}. It waS the double-Sided verSion of the Commodore 1570 diSk drive but, unlike the 1570, worked quite well. The 1571 Supported "burSt mode" loading when uSed on a C128 in native mode, which increaSed the tranSfer Speed from 1541 Speed to about three kilobyteS per Second (about a 10-fold increaSe). The 1571 could be told to emulate a 1541 for uSe with a C64 or 1541 diSkS. BugS in early releaSeS of the 1571 ROM affected acceSS to the Second Side of the diSk. (1996-04-07)