INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - SET SEGMENT BASE ADDRESS
	AX = 0007h
	BX = selector
	CX:DX = linear base address
Return: CF clear if successful
	CF set on error
	    AX = error code (DPMIsee DOS Protected-Mode Interface 1.0+) (8022h,8025h) (see #03143)
Notes:	only modify descriptors allocated with INT 31/AX=0000h
	only the low 24 bits of the address will be used by 16-bit DPMIsee DOS Protected-Mode Interface
	  implementations even on a 386 or higher
	DPMIsee DOS Protected-Mode Interface 1.0+ automatically reloads any segment registers containing the
	  selector being modified
	not supported by MS Windows 3.0 in Standard mode
SeeAlso: AX=0006h,AX=0008h,AX=0009h,AX=000Ch,INT 21/AX=3503h
SeeAlso: INT 21/AH=E9h"OS/286",INT 2C/AX=0002h