Description
The uPD765A/B is an LSI floppy disk controller (FDC) chip which contains the circuitry and control functions for interfacing a processor to 4 floppy disk drives..
Features
- Address mark detection circuitry is internal to the FDC
which simplifies the phase-locked loop and read elec-
tronics. The track stepping rate, head load time, and
head unload time are user-programmable. The
uPD765A/uPD765B
offers additional features such as
multi-track and multi-side read and write commands
and single and double density capabilities. FM, MFM Control
Variable recording length: 128,256, .8192 bytes/ sector
IBM-compatible format (single- and doublesided, single- and dou.
