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Int 15 Fn 5308 - Advanced Power Management Spec - Enable/disable Power M [p]
AX = 5308h
BX = FFFFh
CX = new state
0000h disabled
0001h enabled
Return: CF clear if successful
CF set on error
AH = error code (01h,09h,0Ah) (see AX=5300h)
Notes: when power management is disabled, the system BIOS will not
automatically power down devices, enter stand-by or suspended mode,
or perform any power-saving actions in response to AX=5305h calls
should not be called from within a hardware interrupt handler to avoid
reentrance problems
See Also: AX=5309h
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