RBIL61 - INT 31 - DPMI 0.9+ - SET REAL MODE INTERRUPT VECTOR {protected mode}

INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - SET REAL MODE INTERRUPT VECTOR
	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
SeeAlso: AX=0200h,AX=0205h,AX=0600h,INT 21/AX=2505h