INT 33,20 - Enable Mouse Driver
AX = 20h returns nothing - reinstalls the mouse drivers interrupt vectors for INT 10 and INT 71 (8088/86) and INT 74 (286/386) - see INT 33,1F
AX = 20h returns nothing - reinstalls the mouse drivers interrupt vectors for INT 10 and INT 71 (8088/86) and INT 74 (286/386) - see INT 33,1F