Bitfields for ANSIPLUS hooked interrupts mask:
Bit(s)	Description	)
 0	INT 09 hook disabled
 1	INT 10 hook disabled
 2	INT 15 hook disabled
 3	INT 16 hook disabled
 4	INT 1C hook disabled
 5	reset all bits when INT 29 called
 6	INT 29 hook disabled
 7	INT 33, INT 74, or other mouse event hook disabled