| 摘要 |
The present invention relates to a data processing system comprising a first interrupt controller with an interrupt source interface, an interrupt controller interface, prioritizing means, and an interrupt controller output. The Data processing system further comprises a processing unit providing an interrupt controller interface. The invention also is related to a method for handling interrupt requests. Accordingly, interrupt requests generated by a first plurality of interrupt sources, a second selected interrupt request, a second priority signal, and a second interrupt source index signal generated by a second interrupt controller are received by the first interrupt controller Among said plurality of interrupt requests and said second selected interrupt request a first single interrupt request is selected and transmitted along with a first priority signal, and a first index signal to the processing unit; which initiates an appropriate interrupt service routine on the basis of said first index signal.
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