INT 33,9 - Set Mouse Graphics Cursor

AX = 9

BX = horizontal hot spot (-16 to 16)

CX = vertical hot spot (-16 to 16)

ES:DX = pointer to screen and cursor masks (16 byte bitmap)

returns nothing

- screen mask is AND'ed to screen Cursor Mask is XOR'ed

- bytes 0-7 form the screen mask bitmap

- bytes 8-F form the cursor mask bitmap