Port adapter system including a controller for switching channel

Details Port adapter system including a controller for switching channel Port adapter system including a controller for switching channel

1989-03-23

1991-12-03

Lee, Thomas C.

Boots, shoes, and leggings

3648,3, 3642385, 3642419, 36492792, 36492794, 36492799, 3649352, 364DIG1, 364DIG2, G06F 1312, G06F 1318

Patent

active

050704770

ABSTRACT:
A port adapter for an input/output system for a large data processing system. The port adapter is coupled to an I/O processor of that system and also to main memory of the system so that when the port adapter is selected by a system interrupt message from the I/O processor, it can begin and carry on its data transmission between a selected peripheral device and main memory without further assistance. The port adapter has two peripheral interface transceivers so that it can concurrently control data transfers to at least two peripheral devices.

REFERENCES:
patent: 3675209 (1972-07-01), Trost et al.
patent: 3916380 (1975-10-01), Fletcher et al.
patent: 4387440 (1983-06-01), Eaton
patent: 4394734 (1983-07-01), Norgren et al.
patent: 4602331 (1986-07-01), Sheth
patent: 4630232 (1986-12-01), Loskorn et al.
patent: 4747047 (1988-05-01), Coogan et al.
patent: 4750107 (1988-06-01), Buggert

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