da0832.lst

51单片机用汇编实例 包括ad

A51 MACRO ASSEMBLER  DA0832                                                               12/30/2005 17:00:16 PAGE     1


MACRO ASSEMBLER A51 V7.09
OBJECT MODULE PLACED IN DA0832.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE DA0832.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;==============================================================
                       2     ; 文件名称: DA0832.ASM
                       3     ; 功能说明: 利用DA输出锯齿波
                       4     ;==============================================================
                       5     
  7FFF                 6     DAPORT  EQU 7FFFH
                       7     
0000                   8             ORG 0000H
0000 0150              9             AJMP START
0050                  10             ORG 0050H
0050 907FFF           11     START:  MOV DPTR, #DAPORT       ;DAC0832控制端口
0053 7400             12             MOV A, #00H
0055 F0               13     DLP1:   MOVX @DPTR, A           ;写数据到DAC0832
0056 04               14             INC A                   ;A从0变化到FFH
0057 80FC             15             SJMP DLP1
                      16             END
A51 MACRO ASSEMBLER  DA0832                                                               12/30/2005 17:00:16 PAGE     2

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


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

DAPORT . . . . . .  N NUMB   7FFFH   A   
DLP1 . . . . . . .  C ADDR   0055H   A   
START. . . . . . .  C ADDR   0050H   A   


REGISTER BANK(S) USED: 0 


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