main.lst

这是单片机C51典型应用设计代码

C51 COMPILER V7.03   MAIN                                                                  11/26/2006 18:28:06 PAGE 1   


C51 COMPILER V7.03, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND CODE SYMBOLS

stmt level    source

   1          #include <reg52.h>
   2          #include <stdio.h>
   3          
   4          /*------------------------------------------------
   5          MAIN C function
   6          ------------------------------------------------*/
   7          void main (void)
   8          {
   9   1      /*--------------------------------------
  10   1      Set serial port for 9600 baud at
  11   1      11.0592 MHz.  Note that we use Timer 1
  12   1      for the baud rate generator.
  13   1      --------------------------------------*/
  14   1      SCON  = 0x50;
  15   1      TMOD |= 0x20;
  16   1      TH1   = 0xFA;
  17   1      TR1   = 1;
  18   1      TI    = 1;
  19   1      PCON |= 0x80;
  20   1      
  21   1      printf ("\r\nCounter 0 Example Program\r\n");
  22   1      printf ("\r\nStart toggling P3.4 (T0 input)\r\n\r\n");
  23   1      
  24   1      /*--------------------------------------
  25   1      Set Timer0 for 16-bit counter mode.
  26   1      Set the Timer0 Run control bit.
  27   1      --------------------------------------*/
  28   1      TMOD = (TMOD & 0xF0) | 0x05;
  29   1      TR0 = 1;
  30   1      
  31   1      /*--------------------------------------
  32   1      Output the value of the counter.  As you
  33   1      toggle P3.4, the timer/counter 0 value
  34   1      will increase.
  35   1      --------------------------------------*/
  36   1      while (1)
  37   1        {
  38   2        printf ("\rCounter 0 = %2.2bX%2.2bXh", TH0, TL0);
  39   2        }
  40   1      }
  41          
C51 COMPILER V7.03   MAIN                                                                  11/26/2006 18:28:06 PAGE 2   

ASSEMBLY LISTING OF GENERATED OBJECT CODE


             ; FUNCTION main (BEGIN)
                                           ; SOURCE LINE # 7
                                           ; SOURCE LINE # 8
                                           ; SOURCE LINE # 14
0000 759850            MOV     SCON,#050H
                                           ; SOURCE LINE # 15
0003 438920            ORL     TMOD,#020H
                                           ; SOURCE LINE # 16
0006 758DFA            MOV     TH1,#0FAH
                                           ; SOURCE LINE # 17
0009 D28E              SETB    TR1
                                           ; SOURCE LINE # 18
000B D299              SETB    TI
                                           ; SOURCE LINE # 19
000D 438780            ORL     PCON,#080H
                                           ; SOURCE LINE # 21
0010 7BFF              MOV     R3,#0FFH
0012 7A00        R     MOV     R2,#HIGH ?SC_0
0014 7900        R     MOV     R1,#LOW ?SC_0
0016 120000      E     LCALL   _printf
                                           ; SOURCE LINE # 22
0019 7BFF              MOV     R3,#0FFH
001B 7A00        R     MOV     R2,#HIGH ?SC_30
001D 7900        R     MOV     R1,#LOW ?SC_30
001F 120000      E     LCALL   _printf
                                           ; SOURCE LINE # 28
0022 E589              MOV     A,TMOD
0024 54F0              ANL     A,#0F0H
0026 4405              ORL     A,#05H
0028 F589              MOV     TMOD,A
                                           ; SOURCE LINE # 29
002A D28C              SETB    TR0
002C         ?C0001:
                                           ; SOURCE LINE # 36
                                           ; SOURCE LINE # 37
                                           ; SOURCE LINE # 38
002C 7BFF              MOV     R3,#0FFH
002E 7A00        R     MOV     R2,#HIGH ?SC_67
0030 7900        R     MOV     R1,#LOW ?SC_67
0032 858C00      E     MOV     ?_printf?BYTE+03H,TH0
0035 858A00      E     MOV     ?_printf?BYTE+04H,TL0
0038 120000      E     LCALL   _printf
                                           ; SOURCE LINE # 39
003B 80EF              SJMP    ?C0001
             ; FUNCTION main (END)

C51 COMPILER V7.03   MAIN                                                                  11/26/2006 18:28:06 PAGE 3   

NAME                                    CLASS   MSPACE  TYPE    OFFSET  SIZE
====                                    =====   ======  ====    ======  ====


P1 . . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   0090H  1
P3 . . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   00B0H  1
IE . . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   00A8H  1
size_t . . . . . . . . . . . . . . . .  TYPEDEF  -----  U_INT    -----  2
IP . . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   00B8H  1
TI . . . . . . . . . . . . . . . . . .  ABSBIT   -----  BIT      0099H  1
main . . . . . . . . . . . . . . . . .  PUBLIC   CODE   PROC     0000H  -----
PCON . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   0087H  1
SCON . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   0098H  1
TMOD . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   0089H  1
TCON . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   0088H  1
TH0. . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   008CH  1
TH1. . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   008DH  1
TL0. . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   008AH  1
TR0. . . . . . . . . . . . . . . . . .  ABSBIT   -----  BIT      008CH  1
TR1. . . . . . . . . . . . . . . . . .  ABSBIT   -----  BIT      008EH  1
T2CON. . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   00C8H  1
_printf. . . . . . . . . . . . . . . .  EXTERN   CODE   PROC     -----  -----
PSW. . . . . . . . . . . . . . . . . .  SFR      DATA   U_CHAR   00D0H  1


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     61    ----
   CONSTANT SIZE    =     94    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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