Boots – shoes – and leggings
Patent
1993-06-08
1994-12-27
Harrell, Robert B.
Boots, shoes, and leggings
395800, 3642394, 3642422, 3642563, 3642625, 3649463, 364DIG1, 364DIG2, G06F 1314, G06F 930
Patent
active
053773373
ABSTRACT:
Provides a software-to-software interface and a software-to-hardware interface between software users and a hardware ADM facility (ADMF) in a data processing system. Such software user presents only virtual addresses to the software-to-software interface in a MSB list. The user list defines virtual address spaces, including a "hiperspace", in a manner that represents physical backing media as different random-access electronic storages, such main storage (MS) and expanded storage (ES). The real data transfers are within or between the backing storages. The user list is transformed into an ADM operation block (AOB), which is assigned an ADM UCB in a UCB queue which is associated with an ADM subchannel. The software-to-hardware interface generates an ORB, containing the AOB address, as an operand of a SSCB instruction which is executed to queue the associated subchannel onto one of plural co-processor queues in the ADMF. The ADMF uses the AOB to perform the requested page moves, and generates an interruption upon completion of each request which is sent to the hardware-to-software interface to remove the associated ADMF request from the ADM software request queue and free the associated ADM UCB for use by another user request.
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Antognini James
Brent Glen A.
Cook Thomas E.
Dewkett Thomas J.
Elliott Joseph C.
Goldman Bernard M.
Harrell Robert B.
International Business Machines - Corporation
Philipp Timothy L.
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