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IRQ Flag: Difference between revisions

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(see also IRQ Disable)
 
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[[IRQ Handler]]s should read this flag (which will cause it to automatically be cleared) otherwise the [[IRQ]] will fire again immediately after [[RTI]].
[[IRQ Handler]]s should read this flag (which will cause it to automatically be cleared) otherwise the [[IRQ]] will fire again immediately after [[RTI]].
=== See Also ===
* [[IRQ Disable Flag]]


=== Reference ===
=== Reference ===

Latest revision as of 00:09, 19 July 2023

The IRQ Flag lives at bit 7 of TIMEUP (4211h).

IRQ Handlers should read this flag (which will cause it to automatically be cleared) otherwise the IRQ will fire again immediately after RTI.

See Also

Reference