INT 15 - APM SL Enhanced v1.0 - SET GLOBAL STANDBY TIMER                        
	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
SeeAlso: AX=5380h/BH=02h,AX=5380h/BH=7Fh