Int 33 Fn 0012 - Ms Mouse - Set Large Graphics Cursor Block [M]
AX = 0012h
BH = cursor width in words
CH = rows in cursor
BL = horizontal hot spot (-16 to 16)
CL = vertical hot spot (-16 to 16)
ES:DX -> bit map of screen and cursor maps
Return: AX = FFFFh if successful
See Also: AX=0009h,AX=002Ah,AX=0035h