Interface bus with independent data, command and direct control

Details Interface bus with independent data, command and direct control Interface bus with independent data, command and direct control

1989-05-11

1993-08-10

Lee, Thomas C.

Boots, shoes, and leggings

3642401, 364260, 3642405, 3649354, 364DIG1, G06F 1300

Patent

active

052356850

ABSTRACT:
A data processing system is disclosed in which a plurality of high performance, intelligent, mass storage input-output devices are linked to a host controller by an input-output interface bus which is divided into three sections. Each section is completely independent of the other two sections and used for a different and specific purpose. One section is used to transfer commands and retrieve status information. A second section is used to handle device requests for data transfer and device signals for operation complete. The third section is used to transfer data to and from a device. Since the three sections are completely independent, simultaneous transfer of command control and data to different input-output devices or to a single input-output device can be performed.

REFERENCES:
patent: 4080649 (1978-03-01), Calle
patent: 4106092 (1978-08-01), Millers
patent: 4162520 (1979-07-01), Cook
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patent: 4682304 (1987-07-01), Tierney
patent: 4747047 (1988-05-01), Coogan
patent: 4805090 (1989-02-01), Coogan
patent: 4839793 (1989-06-01), Brunk
patent: 4853847 (1989-08-01), Ohuchi
patent: 4860734 (1989-09-01), Idleman
patent: 4864532 (1989-09-01), Reeve
patent: 4888691 (1989-12-01), George

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