Floppy disk drive controller with improved density select

Details Floppy disk drive controller with improved density select Floppy disk drive controller with improved density select

1993-05-20

1994-04-05

Fleming, Michael R.

Boots, shoes, and leggings

364DIG1, 3642315, 3642362, 3642383, 3642391, 3642393, 3642456, 3642457, 3642481, 364260, 3642601, 360 48, G06F 300

Patent

active

053013000

ABSTRACT:
A floppy disk drive controller interfaces a microprocessor system including a microprocessor with a floppy disk drive of the type arranged to receive data bits at any one of 250 or 300 Kbps, 500 Kbps, and 1 Mbps rates. The controller is arranged for providing data bits for the floppy disk drive at a rate corresponding to one of the three rates. The controller conditions the floppy disk drive to receive the data bits at the one rate dictated by the microprocessor and includes a data rate control register for providing a pair of data rate control bits indicative of the one data rate and a decoder coupled to the control register for decoding the data rate control bits and providing a pair of rate control signals to condition the floppy disk drive to receive the data bits at the one data rate. The controller also includes data rate control redundancy for conditioning the floppy disk drive responsive to data rate control signals received directly from the microprocessor.

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