On Thu, 12 Aug 2004, Dwight K. Elvey wrote: > Hi Jules > Here is what I've found. It is a disk drive emulator. > Unless a PC is DMA driven, bit banging a floppy is not practical. Disk I/O without DMA is not practical. But it IS possible. Consider the PCJr and Tandy 1000, both of which do disk I/O without DMA on 4.77MHz? machines.