INT 70 C - IRQ8 - CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. REAL-TIME CLOCK Desc: this interrupt is called when the real-time clock chip generates an alarm or periodic interrupt, among others (see CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 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 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",MEM FEE00320h SeeAlso: MEM 0040h:006Bh