Boots – shoes – and leggings
Patent
1987-08-28
1989-06-06
Zache, Raulfe B.
Boots, shoes, and leggings
3642281, 3642283, G06F 300
Patent
active
048376809
ABSTRACT:
A plurality of host processors share access to a peripheral data storage subsystem and each have program means for controlling asynchronous operations of the subsystem. Control blocks in each of the host processors are addressably linked together for enabling inferred access to a unit control block (UCB) for any of a plurality of peripheral devices in the subsystem. The subsystem selectively groups some of the devices such that only devices designated as primary devices are addressably accessible by host processor application programs. Other devices in the respective groups are secondary devices and are accessed by the subsystem whenever the primary devices in the same group cannot perform a host processor commanded operation. Means are provided for identifying the secondary devices to all of the host processors.
REFERENCES:
patent: 4396984 (1983-08-01), Videki
Crockett Robert N.
Kern Robert F.
Miller Arnold G.
Norris Richard E.
Pousson, Jr. Michael W.
International Business Machines - Corporation
Schecter Manny W.
Zache Raulfe B.
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