pca2.lst

51单片机用汇编实例 包括ad

A51 MACRO ASSEMBLER  PCA2                                                                 12/31/2005 10:23:46 PAGE     1


MACRO ASSEMBLER A51 V7.09
OBJECT MODULE PLACED IN PCA2.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE PCA2.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;=====================================================================
                       2     ; 文件名称: PCA2.ASM
                       3     ; 功能描述: 使PCA工作于PWM模式. 输出占空比为75%的方波信号.
                       4     ;           示波器测量P1.3引脚观察.
                       5     ;=====================================================================
                       6     
  00F9                 7     CH      DATA 0F9H
  00E9                 8     CL      DATA 0E9H
  00D8                 9     CCON    DATA 0D8H
  00D9                10     CMOD    DATA 0D9H
  00FA                11     CCAP0H  DATA 0FAH
  00EA                12     CCAP0L  DATA 0EAH
  00DA                13     CCAPM0  DATA 0DAH
                      14     
  00D8                15     CCF0    BIT  0D8H
  00DE                16     CR      BIT  0DEH
  00CF                17     CF      BIT  0CFH
                      18     
0000                  19             ORG 0000H
0000 020100           20             LJMP START
0100                  21             ORG 0100H
0100 75D900           22     START:  MOV CMOD, #00H          ;设置PCA定时器
0103 75F900           23             MOV CH, #00H            ;装计数初值
0106 75E900           24             MOV CL, #00H
0109 75EA40           25             MOV CCAP0L, #40H        ;设置初始值与CCAP0H相同
010C 75FA40           26             MOV CCAP0H, #40H        ;75%
010F 75DA42           27             MOV CCAPM0, #42H        ;设置PCA模块0为PWM模式
0112 75A8C0           28             MOV IE, #0C0H
0115 D2DE             29             SETB CR                 ;启动PCA定时器
0117 80FE             30             SJMP $
                      31     
                      32             END
A51 MACRO ASSEMBLER  PCA2                                                                 12/31/2005 10:23:46 PAGE     2

SYMBOL TABLE LISTING
------ ----- -------


N A M E             T Y P E  V A L U E   ATTRIBUTES

CCAP0H . . . . . .  D ADDR   00FAH   A   
CCAP0L . . . . . .  D ADDR   00EAH   A   
CCAPM0 . . . . . .  D ADDR   00DAH   A   
CCF0 . . . . . . .  B ADDR   00D8H.0 A   
CCON . . . . . . .  D ADDR   00D8H   A   
CF . . . . . . . .  B ADDR   00C8H.7 A   
CH . . . . . . . .  D ADDR   00F9H   A   
CL . . . . . . . .  D ADDR   00E9H   A   
CMOD . . . . . . .  D ADDR   00D9H   A   
CR . . . . . . . .  B ADDR   00D8H.6 A   
IE . . . . . . . .  D ADDR   00A8H   A   
START. . . . . . .  C ADDR   0100H   A   


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)