Handling interrupts by returning and requeuing currently executi

Details Handling interrupts by returning and requeuing currently executi Handling interrupts by returning and requeuing currently executi

1997-11-13

2000-05-09

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Interrupt processing

Interrupt prioritizing

710128, G06F 1314

Patent

active

060617578

ABSTRACT:
An information handling system includes one or more processing units, a data management unit, connected to the processor data bus, to a memory system, and to an I/O bus, an address management unit, connected to the processor address bus, to the memory system, and to an I/O bus. Data management unit also includes interrupt routing logic which snoops interrupt packets, stores the information in registers, and generates a signal indicating whether a particular interrupt was accepted or rejected. If the interrupt logic has a higher priority interrupt pending, the current interrupt packet will be returned to the requesting device using the interrupt return transaction, and the requesting device will accept the return transaction by decoding the bus unit ID field in the packet. The interrupt will be requeued and held in a pending status until an interrupt reissue transaction is transmitted by the interrupt routing logic and received by the interrupting I/O controller. Interrupts may be generated by any I/O device connected to any of I/O controllers on the I/O bus, or by a high speed I/O device connected to processor address bus.

REFERENCES:
patent: 4023143 (1977-05-01), Braunstein
patent: 4839800 (1989-06-01), Barlow et al.
patent: 5404535 (1995-04-01), Barlow et al.
patent: 5438677 (1995-08-01), Adams et al.
patent: 5511200 (1996-04-01), Jayakumar
patent: 5564060 (1996-10-01), Mahalingaiah et al.
Description of Intel.RTM. 8259 Controller,Intel.RTM. Peripheral Components Catalog, 1988, Intel Corp. Literature Department, 3065 Bowers Avenue, Santa Clara, California.

Affiliated with

Also associated with

Rating

Handling interrupts by returning and requeuing currently executi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Handling interrupts by returning and requeuing currently executi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handling interrupts by returning and requeuing currently executi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1075317