Data processor input/output controller

Details Data processor input/output controller Data processor input/output controller

1978-12-22

1981-05-19

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 300, G06F 946

Patent

active

042689066

ABSTRACT:
An I/O controller is provided for transferring data between a host processor and a plurality of I/O devices wherein the host processor generates a transfer command and each of the plurality of I/O devices generates multiple asynchronous service requests for transfer to the host processor. Control circuitry is provided for controlling the transfer of the service requests from the plurality of I/O devices to the host processor. The control circuitry generates a host processor interrupt signal for application to the host processor, such that in response to the host processor interrupt signal, the host processor generates the transfer command to allow the control circuitry to transfer the service requests to the host processor.

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patent: 3905025 (1975-09-01), Davis et al.
patent: 4027290 (1977-05-01), Subrizi et al.
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patent: 4079448 (1978-03-01), N'Guyen et al.
patent: 4080649 (1978-03-01), Calle et al.
patent: 4110830 (1978-08-01), Krygowski
patent: 4115854 (1978-09-01), Capowski et al.
patent: 4126897 (1978-11-01), Capowski et al.

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