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Desc: This interrupt is called when the real-time clock chip generates an alarm or periodic interrupt, among others (see CMOS 0Bh). The periodic interrupt by default occurs 1024 times per second.
Notes: Many BIOSes turn off the periodic interrupt in the INT 70h handler unless in an event wait (see INT 15/AH=83h,INT 15/AH=86h).. May be masked by setting bit 0 on I/O port A1h
See Also: INT 08 - INT 0F"HP 95LX" - INT 15/AH=01h"Amstrad"
See Also: INT 15/AH=86h - INT 1A/AH=02h - INT 58"DESQview" - MEM FEE00320h
See Also: MEM 0040h:006Bh
Category: Hardware - Int 70h - I
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