WD1691 logic equivalent, floppy support logic.
.. Direct interface to the FD179X
* Eliminates external FDC Logic .. Data Separation/RCLK GENERATION .. Write Precompensation Signals
* VFOE/WF Demultiplexing
The WD1691 F.S.L. has been designed to minimize the
external logic required to interface the 179X Family of Floppy Disk Controllers to a drive. With the use of an external VCO, the WD 1691 will generate the RCLK signal for the WD179X, while providing.
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