Int 31 Fn 0201 P - DPMI 0.9+ - Set Real Mode Interrupt Vector [E] AX = 0201h BL = interrupt number CX:DX = segment:offset of real mode handler Return: CF clear Note: all memory that may be touched by a hardware interrupt handler must be locked down with INT 31/AX=0600h See Also: AX=0200h,AX=0205h,AX=0600h,INT 21/AX=2505h