Interrupt system with fast response time

Details Interrupt system with fast response time Interrupt system with fast response time

1997-09-12

1999-10-19

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Interrupt processing

Interrupt prioritizing

710260, 710 40, G06F 1326

Patent

active

059681594

ABSTRACT:
The present invention is related to a data handling system comprising a central processing unit for executing a sequence of commands stored in a memory. This central processing unit comprises an interrupt request input and a priority input as well as means for servicing an interrupt request by executing a command sequence at a predefined address in said memory. The predefined address is an interrupt base address plus an offset address value defined by a priority number provided at the priority input. The system further comprises an interrupt request control unit comprising interrupt arbitration means and generating, after determining the interrupt request, the highest priority by said interrupt arbitration means, an interrupt request signal fed to said interrupt request input and providing a priority number at said priority input. A plurality of peripheral devices each having an associated interrupt service register for storing a priority number is coupled with the interrupt request control unit via an interrupt arbitration bus.

REFERENCES:
patent: 4768149 (1988-08-01), Konopik et al.
patent: 5218703 (1993-06-01), Fleck et al.
patent: 5274825 (1993-12-01), Lemay et al.
patent: 5287523 (1994-02-01), Allison et al.
patent: 5381552 (1995-01-01), Dahlberg et al.

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