public Opcode getOpcode ( ) { int b = getUnsignedByte ( 0 ) ; switch ( b ) { case Opcode . NONPRIV : case Opcode . PRIV : case Opcode . WIDE : return Opcode . get ( b , getUnsignedByte ( 1 ) ) ; } return Opcode . get ( b ) ; }
Get the Opcode for this instruction or null if the instruction is unrecognized .