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UDTIM

     Purpose:  Update the system clock
Call address:  $FFEA (hex)  65514 (decimal)
Communication registers:  None
Preparatory routines:  None
Error returns:  None
Stack requirements:  2
Registers affected:  A, X

Description:

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.

How to Use:

  1. Call this routine.

EXAMPLE:

     JSR UDTIM
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