INT 10 - VIDEO - AX PC - SET SCREEN COUNTRY CODE

	AX = 5000h
	BX = country code
	    0001h USA (English), 0051h Japan
Return: AL = status
	    00h successful
	    01h bad country code
	    02h other error
Note:	This function is called with BX=0051h by Japanese versions of
	  MS-DOS/PC DOS/DR DOS IO.SYS/IBMBIO.COM at initialization time.
SeeAlso: AX=5001h,INT 16/AX=5000h