Bitfields for type of AMIS hotkey checking:
Bit(s)	Description	)
 0	checks before chaining INT 09
 1	checks after chaining INT 09
 2	checks before chaining INT 15/AH=4Fh
 3	checks after chaining INT 15/AH=4Fh
 4	checks on INT 16/AH=00h,01h,02h
 5	checks on INT 16/AH=10h,11h,12h
 6	checks on INT 16/AH=20h,21h,22h
 7	reserved (0)
SeeAlso: #02572