Multi-computer system with plural serial bus loops

Details Multi-computer system with plural serial bus loops Multi-computer system with plural serial bus loops

1981-06-04

1984-08-28

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 1516

Patent

active

044687338

ABSTRACT:
A multi-computer system includes a plurality of data processors and at least one I/O device which is commonly accessible by the data processors. A plurality of serial bus loops are configurated in hierarchy with interbus linkage devices disposed between adjacent layers of the hierarchy. The data processors are connected to a plurality of first layer serial bus loops and the I/O device which is commonly accessible by the data processors is connected to a second layer of serial bus loop. The interbus linkage devices control linkage among the plurality of serial bus loops and carry out routing control for a start command from the data processor to the I/O device, routing control for an interruption to report the end of I/O device operation, routing control for data transfer, routing control for a request interruption and exclusive use control of the shared I/O device.

REFERENCES:
patent: Re28811 (1976-05-01), Pierce
patent: 3659271 (1972-04-01), Collins
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patent: 3879710 (1975-04-01), Maxemchuk
patent: 3890471 (1975-06-01), Hachenburg
patent: 3958226 (1976-05-01), Kuroda
patent: 3979723 (1976-09-01), Hughes
patent: 4019176 (1977-04-01), Cour
patent: 4031512 (1977-06-01), Faber
patent: 4223380 (1980-09-01), Antonaccio

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