stacktrace1.txt

PL/0 code:

  0  INC        6   
  1  INP            
  2  STO    0   5   
  3  LOD    0   5   
  4  LIT       56   
  5  ADD            
  6  STO    0   4   
  7  LOD    0   4   
  8  OUT            
  9  HLT            

Execution:
                      pc   bp   sp   stack
                       0    1    0   
  0  INC        6      1    1    6   0 0 0 0 0 0 
  1  INP            read 5 from input
   2    1    7   0 0 0 0 0 0 5 
  2  STO    0   5      3    1    6   0 0 0 0 0 5 
  3  LOD    0   5      4    1    7   0 0 0 0 0 5 5 
  4  LIT       56      5    1    8   0 0 0 0 0 5 5 56 
  5  ADD               6    1    7   0 0 0 0 0 5 61 
  6  STO    0   4      7    1    6   0 0 0 0 61 5 
  7  LOD    0   4      8    1    7   0 0 0 0 61 5 61 
  8  OUT            61
   9    1    6   0 0 0 0 61 5 
  9  HLT              10    1    6   0 0 0 0 61 5