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Is interrupt request acknowledged right away after CLI instruction?

Latest Updated:12/06/2004

Question:

(Interrupts)   With the interrupt disable flag (I flag) set to "1" (disable interrupt), if the I flag is set to "0" (enable interrupt) by a CLI instruction while an interrupt is being enabled and requested, is the interrupt request acknowledged immediately after the CLI instruction or after the following instruction of the CLI instruction? [2004/12/16]

Answer:

The interrupt request is acknowledged immediately after the CLI instruction sets the I flag to "0", and interrupt processing will commence. (#104942)
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