Mpf   Accum	 B/w	      00Mop10w data		 {data}
   Math operation First byte. This is a condensation of
     | Mpf: ^xxMopxxx.
     | Mop:	 | ADC	 010.
		 | ADD	 000.
		 | AND	 100.
		 | CMP	 111.
		 | OR	 001.
		 | SBB	 011.
		 | SUB	 101.
		 | XOR	 110.
		 |	 xxx.
		 .
 Mpf   Dst     Src	    00Mop0dw MdRegR/m {disp}   {disp}