G - Physics – 06 – F
Patent
G - Physics
06
F
354/230.84
G06F 13/24 (2006.01) G06F 9/48 (2006.01)
Patent
CA 1251869
SYSTEM FOR MANAGING A PLURALITY OF SHARED INTERRUPT HANDLERS IN A LINKED-LIST DATA STRUCTURE Abstract A system is disclosed for managing a plurality of interrupt handlers in a linked-list data structure, for servicing a plurality of input/output devices sharing a common interrupt line in a microcomputer. The system provides for an orderly method to link a newly loaded interrupt handler routine into a linked-list data structure consisting of previously loaded interrupt handler routines. The system further provides for an orderly method to share a common interrupt line among a plurality of input/output devices being serviced by the interrupt handlers. The system further provides for an orderly means to unlink a particular interrupt handler routine from the linked-list data structure when a corresponding input/output device is to be deactivated. The system finds special utility in a multitasking operating system environment where input/output devices can be deactivated in a different sequence from that in which they were originally activated.
506754
Bradley David J.
Konopik Bradly J.
Reed Martin A.
Tannenbaum Alan R.
Turner Michael R.
International Business Machines Corporation
Saunders Raymond H.
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