Information processing apparatus and exception control circuit

Details Information processing apparatus and exception control circuit Information processing apparatus and exception control circuit

2011-04-26

2011-04-26

Treat, William M (Department: 2181)

Electrical computers and digital processing systems: processing

Processing control

Branching

C712S034000, C345S502000, C345S503000, C345S504000

Reexamination Certificate

active

07934082

ABSTRACT:
An information processing apparatus performs switching between an exception handler and normal processing. The information processing apparatus includes a processor a data processing unit that performs a particular processing upon receiving a processing request from the processor; an interrupt controller that issues an interrupt request to the processor; and an exception control unit that controls the interrupt controller, wherein the data processing unit is connected with the exception control unit via a dedicated line. The data processing unit includes a notification unit that notifies, via the dedicated line, the exception control unit of status information indicating current status of the data processing unit, and based on the notified status information and setup information set by the processor, the exception control unit judges whether to cause the interrupt controller to issue to the processor an interrupt request to execute an exception handler.

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