Bitfields for HUNTER 16 operations disabling power save:
Bit(s)	Description	)
 0	INT 10h prevents power save
 1	INT 13h prevents power save
 2	INT 14h prevents power save
 3	INT 15h prevents power save
 4	INT 1Ah prevents power save
 5	INT 21h prevents power save
 6	direct write to video RAM prevents power save
 7	access to 8250 UART prevents power save
 8	access to 8253 (Sound) prevents power save