Secondary storage facility with means for monitoring sector puls

Details Secondary storage facility with means for monitoring sector puls Secondary storage facility with means for monitoring sector puls

1977-06-06

1978-07-18

Thomas, James D.

Boots, shoes, and leggings

G06F 1106, G06F 1304

Patent

active

041019695

ABSTRACT:
A drive for use with a secondary storage facility that includes a controller and a drive bus that interconnects one or more drives with the controller. During the transfer of data between the drive and the controller, the drive transmits sector and index pulses to the controller over a INDEX/SECTOR PULSES line of the drive bus. Each drive contains circuitry for monitoring the signals on this line. If this circuitry senses a signal on the line that is not transmitted by the drive, the circuitry generates an error signal that indicates that more than one drive connected to the drive bus is active.

REFERENCES:
patent: 3911402 (1975-10-01), McLean

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