| 1. | They must also be restored after that interrupt handler is finished.
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| 2. | Sometimes the interrupt handler will add longer tasks to a queue structure.
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| 3. | An interrupt handler is a low-level counterpart of event handlers.
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| 4. | A switch to and from an interrupt handler took only 2 cycles.
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| 5. | PCLATH must also be preserved by any interrupt handler.
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| 6. | The processor clocks had interrupt handlers which implemented watchdog timers on all processors.
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| 7. | On this level, interrupt handlers and signal handlers correspond to event handlers.
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| 8. | Each interrupt has its own interrupt handler.
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| 9. | Register R1 has the special use of being the program counter for the interrupt handler.
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| 10. | In addition, interrupt handlers and threads exist to run in response to hardware interrupts.
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