anchor.diff:     : '"' ~ ['"']* '"'
      ;
   
  +
   STRING2
  -   :  '\u0027' ~ ['\u0027']* '\u0027'
  +   : '\u0027' ~ ['\u0027']* '\u0027'
      ;
   
   
  
positive.code:    : ORG expression
     ;
  
  
  expressionlist
     : expression (',' expression)*
     ;
  
  label
     : name | gross
     ;
  
  expression
  
negative.code:    : D B
     ;
  
  
  DM
     : D M
     ;
  
  
  DS
     : D S
     ;
  
  
  PUT
     : P U T
     ;
  
  
  REGISTER
     : A H | A L | B H | B L | C H | C L | D H | D L | A X | B X | C X | D X | C I | D I | B P | S P | I P | C S | D S | E S | S S
     ;
  
  
  OPCODE
     : A A A | A A D | A A M | A A S | A D C | A D D | A N D | C A L L | C B W | C L C | C L D | C L I | C M C | C M P | C M P S B | C M P S W | C W D | D A A | D A S | D E C | D I V | E S C | H L T | I D I V | I M U L | I N | I N C | I N T | I N T O | I R E T | J A | J A E | J B | J B E | J C | J E | J G | J G E | J L | J L E | J N A | J N A E | J N B | J N B E | J N C | J N E | J N G | J N G E | J N L | J N L E | J N O | J N P | J N S | J N Z | J O | J P | J P E | J P O | J S | J Z | J C X Z | J M P | L A H F | L D S | L E A | L E S | L O C K | L O D S B | L O D S W | L O O P | L O O P E | L O O P N E | L O O P N Z | L O O P Z | M O V | M O V S B | M O V S W | M U L | N E G | N O P | N O T | O R | O U T | P O P | P O P F | P U S H | P U S H F | R C L | R C R | R E P | R E P E | R E P N E | R E P N Z | R E P Z | R E T | R E T N | R E T F | R O L | R O R | S A H F | S A L | S A R | S A L C | S B B | S C A S B | S C A S W | S H L | S H R | S T C | S T D | S T I | S T O S B | S T O S W | S U B | T E S T | W A I T | X C H G | X L A T | X O R
     ;
  
  
  ASSIGN
     : '='
     ;
  
  
  DOLLAR
     : '$'
     ;
  
  
  QUES
     : '?'
     ;
  
  
  SIGN
  