INT 51 - Tandy 2000 - KEYBOARD SERVICES Note: this interrupt is identical to INT 16 on Tandy 2000 SeeAlso: INT 16/AH=00h,INT 16/AH=01h,INT 16/AH=02h,INT 16/AH=04h"Tandy" SeeAlso: INT 16/AH=04h,INT 4A"Tandy 2000",INT 4C"Tandy 2000",INT 52"Tandy 2000"