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FD1791B

Western Digital
Part Number FD1791B
Manufacturer Western Digital
Description Floppy Disk Formatter/Controller
Published Sep 6, 2018
Detailed Description IIVESTERIV DIGITAL CDR PO RAT /0 N FD1791A/B Floppy Disk Formatter/Controller FEATURES • SOFT SECTOR FORMAT COMPATIBILI...
Datasheet PDF File FD1791B PDF File

FD1791B
FD1791B

Overview
IIVESTERIV DIGITAL CDR PO RAT /0 N FD1791A/B Floppy Disk Formatter/Controller FEATURES • SOFT SECTOR FORMAT COMPATIBILITY • AUTOMATIC TRACK SEEK WITH VERIFI- CATION • ACCOMMODATES SINGLE AND DOUBLE DENSITY FORMATS IBM 3740 Single Density (FM) IBM System 34 Double Density (MFM) • READ MODE Single/Multiple Record Read with Automatic Search or Entire Track Read Selectable 128 Byte or Variable Length Record • WRITE MODE Single/Multiple Record Write with Automatic Sector Search Entire Track Write for Diskette Initialization • PROGRAMMABLE CONTROLS Selectable Track to Track Stepping Time Selectable Head Settling and Head Engage Times • SYSTEM COMPATIBILITY Double Buffering of Data 8 Bit Bi-Directional Bus for Data, Control and Status D~A or Programmed Data Transfers All Inputs and Outputs are TTL Compatible On-chip Track and Sector Registers Comprehensive Status Information • WRITE PRECOMPENSATION (MFM AND FM) • WINDOW EXTENSION (IN MFM) • INCORPORATES ENCODING/DECODING ...


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