code: function ROR() {
  		var value = modRead(),
  			result = ( value >>> 1 ) & 0xff;
  
  		result = write( result | (flagC ? 0x80 : 0) );
  		flagC = value & 0x01;
  		flagZ = +( result === 0 );
  		flagN = ( result & 0x80 ) && 1;
  	}
docs: Rotate right.
  Opcodes: 0x6a, 0x66, 0x76, 0x6e, 0x7e.