mod8.lst

at89s51实验例程代码

A51 MACRO ASSEMBLER  MOD8                                                                 01/29/2007 10:44:52 PAGE     1


MACRO ASSEMBLER A51 V6.23
OBJECT MODULE PLACED IN .\Mod8.obj
ASSEMBLER INVOKED BY: d:\Keil\C51\BIN\A51.EXE C:\Documents and Settings\cdqd1\桌面\AY-MPU89c51D\ayasm\Mod8.asm SET(SMALL
                      ) DEBUG PRINT(.\Mod8.lst) OBJECT(.\Mod8.obj) EP

LOC  OBJ            LINE     SOURCE

0000                   1             ORG 0000H              ;YK.ASM
0000 020100            2             LJMP START
0003                   3             ORG 0003H
0003 2155              4             ajmp xint0
0100                   5             ORG 100H
  0020                 6     a_bit   equ 20h             ;ge bit
  0021                 7     b_bit   equ 21h             ;shi bit
  0022                 8     count   equ 22h             ;count
0100 758160            9     START:  MOV SP,#60H
0103 D2AF             10             SETB EA
0105 D2A8             11             setb ex0 ;!!!!!YING XIANG MUSIC
0107 D288             12             SETB IT0
0109 7C00             13             mov r4,#00h
010B 752010           14             MOV a_bit,#10h           ;off
010E 752111           15             mov b_bit,#11h           ;p
0111 3115             16     loop:   acall disp
0113 2111             17             ajmp loop
0115 E520             18     DISP:   MOV A,a_bit             ;取个位