FD1771 PDF File ( Datasheet )

WESTERN DIGITAl MOS, LSI FD1771 APPLICATION NOTE FLOPPY DISK CONTROLLER APPLICATION NOTE Introduction The FD 1771 is a MOS, LSI device that performs the function of interfacing a processor to a' flexible (Floppy) diskette drive. This single chip replaces nearly 80% of the required disk drive interface electronics. (See figure 1-1) .It provides tha data accessing controls and the bidirectional transfer of information between the processor's memory and the magnetically stored data on the diskett

WESTERN DIGITAL COR PO RAT , 0 N FD1771-01 Floppy Disk Formatter, Controller FEATURES SOFT SECTOR FORMAT COMPATIBILITY AUTOMATIC TRACK SEEK WITH VERIFICATION READ MODE Single, Multiple Sector Write with Automatic Sector Search or Entire Track Read Selectable 128 Byte or Variable Length Sector WRITE MODE Single, Multiple Sector Write with Automatic Sector Search Entire Track Write for Diskette Formatting PROGRAMMABLE CONTROLS Selectable Track-to-Track Stepping Time Selectable Head Settling