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Programming
(6) Next, process the interrupt as necessary, implement the
(7) After all interrupt processes are finished, mask all interrupt request
The interrupt request signal status register can detect/reset per interrupt
request signal. Since this register is not dependent on mask settings, all
interrupt request signals generated on the I/O expansion unit can be
masked to not generate actual interrupts and they can still be processed
the same as interrupts by monitoring interrupt request signal statuses.
Note!
Handling of interrupts varies with the PC model and the OS used.
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termination process on the interrupt controller of the PC, and exit
the interrupt handler.
mask registers in the main routine and undo the PC settings as they
were.
BUF-PCI(PC), BUF-PCI(98)
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