anchor.diff:      vm.framePointer = vm.stackPointer;
     }
   
  -  String format(int value) => 'call ${value * instructionSize.sizeInBytes}';
  +  String format(int value) => 'call $value';
   }
   
   /// Completes the runtime context of a function invocation by setting the
  
positive.code: import '../memory.dart';
  import '../scanner.dart' show Token;
  
  /// This library works with a static size of 4 bytes for all opcodes.
  const NumberType instructionSize = NumberType.uint32;
  
  /// If an immediate argument is encoded in an opcode, its size is 2 bytes.
  const NumberType addressSize = NumberType.uint16;
  
  /// This class serves as the context to a program execution by providing the
  
negative.code:   List<Instruction> program;
  
    /// Number of bytes in the VMs memory that is reserved for the [program].
    int get codeSegmentSize => throw new UnimplementedError();
  
    /// Points to the lowest currently used byte of the stack (in [memory]).
    int stackPointer;
  