Boots – shoes – and leggings
Patent
1991-06-10
1994-09-06
Chan, Eddie P.
Boots, shoes, and leggings
364DIG1, 3642473, 364261, 3642612, 3649467, 36493361, 395775, G06F 9312
Patent
active
053455673
ABSTRACT:
A system and method for modifying program status words (PSW) with overlap enabled. According to the present invention, an instruction which modifies a PSW system mask, access key, or address space code is executed with overlap enabled. This instruction generates a new PSW. The new PSW is pushed into a queue. Once the instruction is complete, the new PSW becomes an architected PSW. If the instruction does not complete, then the new PSW is discarded. Once the new PSW is pushed into the queue, subsequent instructions may execute using the new PSW. Thus, instructions which modify the PSW system mask, access key, and address space code may execute with overlap enabled.
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Capozzi et al. "Non-Sequential High-Performance Processing," IBM Technical Disclosure Bulletin, Oct. 1984, vol. 27, No. 5, pp. 2842-2844.
Enterprise Systems Architecture/390: Principles of Operation (IBM Publication No. SA22-7201-00).
Hayden Clifford O.
Snyder David R.
Stillman Susan B.
Webb Charles F.
Chan Eddie P.
International Business Machines - Corporation
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