led.lst

Protues仿真的一个数码管电路.用了ULN2003和373.只能是一个基本电路.供学习.

A51 MACRO ASSEMBLER  LED                                                                  05/23/2009 16:35:20 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN LED.OBJ
ASSEMBLER INVOKED BY: D:\Keil\C51\BIN\A51.EXE LED.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0030                   1                     ORG             0030H
0030 0132              2                     AJMP    MAIN
0032 758000            3     MAIN:   MOV             P0,#00H
0035 759000            4                     MOV             P1,#00H
0038 75A000            5                     MOV             P2,#00H
003B 758200            6                     MOV             DPL,#00H
003E 758300            7                     MOV             DPH,#00H
0041 C2D3              8                     CLR             RS0
0043 C2D4              9                     CLR             RS1;选择第0组寄存器
0045 757800           10     START:  MOV     78H,#00H
0048 757902           11                     MOV     79H,#02H
004B 757A01           12                     MOV     7AH,#01H
004E 120055           13                     LCALL   LEDSHOW;
0051 020045           14                     LJMP    START
0054 22               15                     RET
                      16     
0055 C0E0             17     LEDSHOW:PUSH    ACC;
0057 7878             18                     MOV     R0,#78H;78H为首旨拇嫫