System for managing a plurality of shared interrupt handlers in

Details System for managing a plurality of shared interrupt handlers in System for managing a plurality of shared interrupt handlers in

1985-08-29

1988-08-30

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 946

Patent

active

047681497

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.

REFERENCES:
patent: 4378589 (1983-03-01), Finnegan et al.

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