Method and apparatus for processing interruption

Details Method and apparatus for processing interruption Method and apparatus for processing interruption

1993-08-02

1996-06-25

Harvey, Jack B.

395500, 395734, 395775, G06F 1300

Patent

active

055308732

ABSTRACT:
Shadow registers for processing interruption are provided in a CPU. When the control shifts to interruption routine, the shadow registers are used for the interruption routine by changing the use of ordinary registers thereto, and the ordinary registers are prohibited to be used during a period of the interruption. Subsequently to the finish of the interruption, the ordinary registers are re-used without the necessity of the store and the re-store of the ordinary registers.

REFERENCES:
patent: 4103329 (1978-07-01), Davis et al.
patent: 4410939 (1983-10-01), Kawakami
patent: 4434461 (1984-02-01), Puhl
patent: 4905190 (1990-02-01), Yokoyama

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