Int 08  - IRQ0 - System Timer                                              [H]

Desc:  generated 18.2 times per second by channel 0 of the 8254 system timer,
     this interrupt is used to keep the time-of-day clock updated

Notes: programs which need to be invoked regularly should use INT 1C unless
     they need to reprogram the timer while still keeping the time-of-day
     clock running at the proper rate
   default handler is at F000h:FEA5h in IBM PC and 100%-compatible BIOSes
   may be masked by setting bit 0 on I/O port 21h

See Also: INT 1C,INT 4A,INT 50"DESQview",INT 58"DoubleDOS",INT 70,INT 78"GO32"

See Also: INT D8"Screen Thief"