UDTIM

Update system clock
Function AddressDescription
UDTIM FFEAUpdate system clock

This routine updates the system clock. Normally this routine is called by the normal KERNAL interrupt routine every 1/60th of a second. If the user program processes its own interrupts this routine must be called to update the time. In addition, the <STOP> key routine must be called, if the <STOP> key is to remain functional.