Millicode load and test access instruction that blocks interrupt

Details Millicode load and test access instruction that blocks interrupt Millicode load and test access instruction that blocks interrupt

1997-03-31

1998-08-04

Lall, Parshotam S.

395591, 395595, G06F 930

Patent

active

057908443

ABSTRACT:
A special inillicode instruction "Load With Access Test" explicitly detects access exceptions for storage operands while retaining control in the current millicode routine to insure exceptions are handled correctly and with the right priority. The millicode Load With Access Test instruction operates similarly to the ESA/390 Load instruction except that access exception code is set, interrupts are blocked and the serialization is forced to purge the instruction pipeline and reset the pipeline control without redirection of the instruction stream.

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patent: 5537559 (1996-07-01), Kane et al.
patent: 5596733 (1997-01-01), Worley, Jr. et al.
patent: 5596739 (1997-01-01), Kane et al.

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