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FD1771 - FLOPPY DISK FORMATTER/CONTROLlER

General Description

(FM) data.

Each data cell is defined by clock pulses.

write head over the desired track.

Key Features

  • o the shift regist.

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Datasheet Details

Part number FD1771
Manufacturer Western Digital
File Size 1.05 MB
Description FLOPPY DISK FORMATTER/CONTROLlER
Datasheet download datasheet FD1771 Datasheet

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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.

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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 diskette. The diskette data is stored in a data entry format compatible with the IBM 3740 specification (other formats may be used providing more data storage). In this format all information is recorded on tracks (radial paths) in sectors (arc sections) defined by a program.