Int 21/AH=2Dh

AH = 2Dh
CH = hour
CL = minute
DH = second
DL = 1/100 seconds

Return:
AL = result
00h successful
FFh invalid time, system time unchanged

Note: DOS 3.3+ also sets CMOS clock; due to the limitations of the CLOCK$ driver interface, the CMOS date is also updated to the current DOS date

See Also: AH=2Bh"DOS" - AH=2Ch - INT 1A/AH=01h - INT 1A/A

Category: DOS Kernel - Int 21h - D