Boots – shoes – and leggings
Patent
1980-10-29
1984-01-31
Springborn, Harvey E.
Boots, shoes, and leggings
G06F 906
Patent
active
044293607
ABSTRACT:
A method and apparatus are provided to enable interruption of list processing operations in a computer system and to enable restart from the point of interruption. A mechanism, at a predetermined point of the list processing operation, operates to recognize occurrences of interrupting events. If any such events are present, a mechanism saves the status of the list processing operation, saves the identification of the task associated with instruction executing the list processing operation and locks the list or queue. After the interrupt is handled, a mechanism restores status, and unlocks the list or queue only when the identified task is active again and the instruction which had been executing the list processing operation is again executing.
REFERENCES:
patent: 3548384 (1970-12-01), Barton et al.
patent: 3713107 (1973-01-01), Barsamian
patent: 3774163 (1973-11-01), Recoque
patent: 4041462 (1977-08-01), Davis et al.
patent: 4084228 (1978-04-01), Dufond et al.
Interrupt Stacking, Draper et al., IBM TDB vol. 20, No. 1, Jun. 1977, pp. 324-327.
Hoffman Roy L.
Kempke William G.
McCullough John W.
Soltis Frank G.
Turner Richard T.
International Business Machines - Corporation
Springborn Harvey E.
Voss Donald F.
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