Int 4A

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SYSTEM - USER ALARM HANDLER

Desc: This interrupt is invoked by the BIOS when a real-time clock alarm occurs; an application may use it to perform an action at a predetermined time.

Note: This interrupt is called from within a hardware interrupt handler, so all usual precautions against reentering DOS must be taken

See Also: INT 1A/AH=06h

Category: Bios - Int 4Ah - S

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