Int 15 Fn 5380 - Apm Sl Enhanced V1.0 - Set Global Standby Timer [p]
AX = 5380h
BH = 03h
SI:DI = timer count in seconds (actually 1.024 seconds)
Return: CF clear if successful
Desc: sets the value of 82360SL GSTDBY_TMRH & GSTDBY_TMRL registers
Note: the maximum timer count is 268431 seconds
See Also: AX=5380h/BH=02h,AX=5380h/BH=7Fh