BSWAP - Byte Swap (486+ only)

	Usage:	BSWAP	reg32
	Modifies flags: none


	Changes the byte order of a 32 bit register from big endian to
	little endian or vice versa.   Result left in destination register
	is undefined if the operand is a 16 bit register.


				 Clocks			Size
	Operands	 808x  286   386   486		Bytes

	reg32	 	  -	-     -     1	  	  2


	- see Instruction Timing