Circuit for arbitrating interrupts with programmable priority le

Details Circuit for arbitrating interrupts with programmable priority le Circuit for arbitrating interrupts with programmable priority le

1997-09-08

1999-09-28

Ray, Gopal C.

Electrical computers and digital data processing systems: input/

Interrupt processing

Interrupt inhibiting or masking

710260, G06F 946

Patent

active

059580364

ABSTRACT:
Apparatus for arbitrating the selection of an interrupt for servicing from a plurality of interrupts in which a priority level for each of the plurality of interrupts is programmed in a first register and each of the interrupts which is to be evaluated for selection for servicing is set as pending in a second register. Only a pending interrupt having a priority level above a pre-set current interrupt priority level is selected for servicing and where multiple pending interrupts of the same priority level occur, the one with the highest order bit position in the second register is used.

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