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