XLAT/XLATB - Translate

	Usage:	XLAT	translation-table
		XLATB	(masm 5.x)
	Modifies flags: None

	Replaces the byte in AL with byte from a user table addressed by
	BX.  The original value of AL is the index into the translate table.

				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	table		  11	5     5	    4		  1

	- see Instruction Timing