INT 1A - TIME - SET SYSTEM TIME AH = 01h CX:DX = number of clock ticks since midnight Return: nothing Notes: there are approximately 18.2 clock ticks per second, 1800B0h per 24 hrs (except on Tandy 2000, where the clock runs at 20 ticks per second) this call resets the midnight-passed flag SeeAlso: AH=00h,AH=03h,INT 21/AH=2Dh