Integrated floppy disk drive controller

Details Integrated floppy disk drive controller Integrated floppy disk drive controller

G - Physics

11

B

352/20

G11B 19/02 (2006.01) G06F 3/06 (2006.01)

Patent

CA 1232067

ABSTRACT A floppy disk drive controller interface implemented as an integrated circuit on a single semiconductor chip. The con- troller 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 a read control circuit including a read data register, write control means including a write data register, a mode register, a status register, state latches, a decoder and special function registers. 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 sirrlultaneously. The controller, under software control, operates in a synchronous or asynchronous read/write mode, and slow or fast read/write mode.

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