RBIL61 - INT 21 - Phar Lap 386/DOS-Extender - SET REAL-MODE INTERRUPT VECTOR {protected mode}

INT 21 P - Phar Lap 386/DOS-Extender - SET REAL-MODE INTERRUPT VECTOR           
	AX = 2505h
	CL = interrupt number
	EBX = CS:IP(Internet Protocol) The lower level (transport layer) of the TCP/IP protocol suite.	See also TCP, TCP/IP. of real-mode interrupt handler
Return: CF clear
Note:	this function is also supported by FlashTek X-32VM
SeeAlso: AX=2503h,AX=2504h,INT 31/AX=0201h