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FD1791B - Floppy Disk Formatter/Controller

Download the FD1791B datasheet PDF. This datasheet also covers the FD1791A variant, as both devices belong to the same floppy disk formatter/controller family and are provided as variant models within a single manufacturer datasheet.

Key Features

  • SOFT SECTOR FORMAT.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (FD1791A-WesternDigital.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number FD1791B
Manufacturer Western Digital
File Size 1.63 MB
Description Floppy Disk Formatter/Controller
Datasheet download datasheet FD1791B Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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 T