公开(公告)号：JPS60160433A

公开(公告)日：1985-08-22

申请号：JP20645484

申请日：1984-10-03

Applicant: APPLE COMPUTER

Inventor： UENDERU BII SANDAA ,  ROBAATO BEIRII

IPC: G06F3/06 ,  G11B20/10

Abstract: A floppy disk drive controller interface is disclosed which is implemented in an integrated circuit. The controller connects to a host computer data bus and one or more floppy disk drives. Based upon clocking and control signals received from a digital computer, the controller generates serial encoded data for recording on a floppy disk and receives serial encoded data previously recorded on a floppy disk. The controller comprises read control means 45 including a read data register, write control means 47 including a write data register, a mode register 31, a status register 33, state latches 39, a decoder 41 and special function registers 35,37. The controller operates by the setting and clearing of the state latches and reading or writing the mode register, the status register, the special function registers, the read data register and the write data register. The setting of a state latch and accessing of a register is done simultaneously. The controller, under software control, operates in a synchronous or asynchronous read/write mode, and low or fast read/write mode.