Microprocessor vectored interrupts

Details Microprocessor vectored interrupts Microprocessor vectored interrupts

1992-10-30

1993-12-28

Kulik, Paul V.

Boots, shoes, and leggings

395800, 364DIG1, 3642412, 3642415, 3642419, G06F 1300

Patent

active

052748251

ABSTRACT:
A data processing system includes a number of subsystems coupled in common to a system bus. The subsystems communicate with each other by sending commands to each other via the system bus. Channel numbers identify the subsystems. One subsystem includes apparatus for receiving commands requiring a priority interrupt by storing vectors in a random access memory. These vectors which are addressed by the channel number of the interrupting subsystem indicate the offset to be added to the base address of an exception vector table. The exception vector stores the starting address in a memory of the requested interrupt routine.

REFERENCES:
patent: 3800287 (1974-03-01), Albright
patent: 4030075 (1977-06-01), Barlow
patent: 4240140 (1980-12-01), Stafford et al.
patent: 4255786 (1981-03-01), Holtey et al.
patent: 4953072 (1990-08-01), Williams
European Patent Application EP-A-O 223,413 (Data General Corporation) Date of Publication: May 27, 1987.
UK Patent Application GB-A-2 110 442 (Western Electric Co.) Date of Publication: Jun. 15, 1983.
PCT International Application WO-A-82/02442 (Harris Corporation) International Publication Date: Jul. 22, 1982.

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