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INT 33h,  00h (0)        Mouse installed flag and reset
INT 33h,  01h (1)        Show cursor
INT 33h,  02h (2)        Hide cursor
INT 33h,  03h (3)        Get Mouse Position and Button Status
INT 33h,  04h (4)        Set Mouse Cursor Position
INT 33h,  05h (5)        Get Button Press Information
INT 33h,  06h (6)        Get Button Release Information
INT 33h,  07h (7)        Set Minimum/Maximum Horizontal Position
INT 33h,  08h (8)        Set Minimum/Maximum Vertical Position
INT 33h,  09h (9)        Set Graphics Cursor Block
INT 33h,  0Ah (10)       Set Text Cursor
INT 33h,  0Bh (11)       Read Mouse Motion Counters
INT 33h,  0Ch (12)       Set User-Defined Subroutine Input Mask
INT 33h,  0Dh (13)       Light Pen Emulation Mode On
INT 33h,  0Eh (14)       Light Pen Emulation Mode Off
INT 33h,  0Fh (15)       Set Mickey/Pixel Ratio
INT 33h,  10h (16)       Conditional Off
INT 33h,  13h (19)       Set Double Speed Threshold
Virtual Screen
Cursors
Cursor Flag