INT 2C P - Cloaking - SET SEGMENT BASE ADDRESS                                  
	AX = 0002h
	SI = selector
	EBX = new physical base addres
Return: CF clear if successful
	CF set on error
	    AX = error code (see #02556)
Note:	this function was first introduced with RM386 (RAM-MAN/386) v6.00
SeeAlso: AX=0000h,AX=0003h,AX=0004h,INT 31/AX=0007h,#00501