FLOPPY DISK FORMATTER/CONTROLlER
WESTERN DIGITAL
COR PO RAT /0 N
FD1771-01 Floppy Disk Formatter/Controller
FEATURES
• SOFT SECTOR FORMAT COMPATIBILITY...
Description
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 and Head Engage Times Selectable Three Phase or Step and Direction and Head Positioning Motor Controls
SYSTEM COMPATIBILITY
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Double Buffering of Data a-Bit Bi-Directional ....
Bus for Data. Control and Status DMA or Programmed Data Transfers All Inputs and Outputs are TTL Compatible
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APPLICATIONS FLOPPY DISK DRIVE INTERFACE SINGLE OR MULTIPLE DRIVE
CONTROLLER/FORMATTER NEW MINI-FLOPPY CONTROLLER
GENERAL DESCRIPTION The FD1771 is a MOS/LSI device that performs the functions of a Floppy Disk Controller/Formatter. The device is designed to be included in the disk drive electronics, and contains a flexible interface
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