Compatibility: 1.0+
Expects: AH    2dH
CH    hour (0 to 23)
CL    minutes (0 to 59)
DH    seconds (0 to 59)
DL    hundredths of a second (0 to 99)
Returns: AL    0    if time was valid
0ffH if time was not valid
Info: Sets the DOS system time.

Versions:   DOS 3.3+  On AT and PS/2 systems, this also sets the time in
the battery-backed CMOS memory.

See Also: Fn 2cH (get time)
Fn 2bH (set date)
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DOS Fn 2dH: Set DOS Time