C51 COMPILER V7.50   KEY                                                                   11/10/2008 12:28:38 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include "key.h"
   2          
   3          
   4          struct  {
   5                  unsigned char old_key_a,new_key_a;
   6                  unsigned char old_key_b,new_key_b;
   7                  unsigned char old_key_c,new_key_c;
   8                  unsigned char old_key_d,new_key_d;
   9          }key_state;
  10          
  11          unsigned char SCAN_KEY(void){
  12   1              key_state.new_key_a=KEY_A;
  13   1              if(key_state.new_key_a!=key_state.old_key_a){
  14   2                      key_state.old_key_a=key_state.new_key_a;
  15   2                      if(KEY_A)return  1;
  16   2                      else return  2;
  17   2              }
  18   1              key_state.new_key_b=KEY_B;
  19   1              if(key_state.new_key_b!=key_state.old_key_b) {
  20   2                      key_state.old_key_b=key_state.new_key_b;
  21   2                      if(KEY_B)return  3;
  22   2                      else return  4;
  23   2              }
  24   1              key_state.new_key_c=KEY_C;
  25   1              if(key_state.new_key_c!=key_state.old_key_c) {
  26   2                      key_state.old_key_c=key_state.new_key_c;
  27   2                      if(KEY_C)return  5;
  28   2                      else return  6;
  29   2              }
  30   1              key_state.new_key_d=KEY_D;      
  31   1              if(key_state.new_key_d!=key_state.old_key_d) {
  32   2                      key_state.old_key_d=key_state.new_key_d;
  33   2                      if(KEY_D)return  7;
  34   2                      else return  8;
  35   2              }
  36   1              return 0;         
  37   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     91    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      8    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)