RTC: Difference between revisions
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====IRQ Danger==== |
====IRQ Danger==== |
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First off, it is important to note that the [[IRQ]] number is 8. This means it has a lower priority than most of other IRQs. You must keep this in mind when programming other IRQ handlers. If you have a harddisk IRQ handler that waits for time to pass inside the IRQ handler, then your machine will be stuck in an infinite loop. An IRQ of higher number will not interrupt an IRQ of lower number. |
First off, it is important to note that the [[IRQ]] number is 8. This means it has a lower priority than most of the other IRQs. You must keep this in mind when programming other IRQ handlers. If you have a harddisk IRQ handler that waits for time to pass inside the IRQ handler, then your machine will be stuck in an infinite loop. An IRQ of higher number will not interrupt an IRQ of lower number. |
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====Turning on IRQ 8==== |
====Turning on IRQ 8==== |
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