Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Int 1Ah Function 03h
                                             ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
  Interrupt:   1Ah     Function:   03h
 
  Title:       Set Time
 
  See also:    DOS Set Time, Get Time
 
  Description:                                               [AT] [PS/2]
 
     Sets the time in the CMOS time/date chip.
 
     Input                                        Output
 
     AH = 03h                                     None
     CH = Hours in binary coded decimal (BCD)
     CL = Minutes in BCD
     DH = Seconds in BCD
     DL = Daylight saving time code
        = 00h (if standard time)
        = 01h (if daylight saving time)
                                    -♦-