INT 70 - IRQ8 - CMOS REAL-TIME CLOCK
Desc:   this interrupt is called when the real-time clock chip generates an
          alarm or periodic interrupt, among others.  The periodic interrupt
          occurs 1024 times per second.
Nots:   many BIOSes turn off the periodic interrupt in the INT 70h handler
          unless in an event wait (see INT 15/AH=83h or INT 15/AH=86h).
        may be masked by setting bit 0 on I/O port A1h
SeeAlso: INT 08,INT 0F"HP 95LX",INT 15/AH=01h"Amstrad",INT 15/AH=83h
SeeAlso: INT 15/AH=86h,INT 1A/AH=02h,INT 58"DESQview"

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