led.lst

用组合语言编写的8051控制LED亮灭的程序,适合8051的初学者.

A51 MACRO ASSEMBLER  LED                                                                  06/21/2008 15:51:40 PAGE     1


MACRO ASSEMBLER A51 V7.10
OBJECT MODULE PLACED IN LED.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE LED.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0100                   1     ORG 0100H
0100 01020408          2     tmp1: DB 01H,02H,04H,08H,10H,20H,40H,80H,81H,82H
0104 10204080                
0108 8182                    
010A 848890A0          3     tmp2: DB 84H,88H,90H,0A0H,0C0H,0C1H,0C2H,0C4H,0C8H,0D0H
010E C0C1C2C4                
0112 C8D0                    
0114 E0E1E2E4          4     tmp3: DB 0E0H,0E1H,0E2H,0E4H,0E8H,0F0H,0F1H,0F2H,0F4H,0F8H
0118 E8F0F1F2                
011C F4F8                    
011E F9FAFCFD          5     tmp4: DB 0F9H,0FAH,0FCH,0FDH,0FEH,0FFH,0FFH,00H,0FFH,00H
0122 FEFFFF00                
0126 FF00                    
                       6     
                       7     
                       8     
0000                   9     ORG 0000H
0000 020200           10     LJMP MAIN
0200                  11     ORG 0200H
0200 900100           12     MAIN:MOV DPTR,#0100H    
0203 7F28             13             MOV R7,#40
0205 120219           14             LCALL DELAY
0208 120219           15             LCALL DELAY
020B E4               16     L2:     CLR A
020C 93               17             MOVC A,@A+DPTR
020D F4               18             CPL A
020E F5A0             19             MOV P2,A
0210 120219           20             LCALL DELAY
0213 A3               21             INC DPTR
0214 DFF5             22             DJNZ R7,L2
0216 020200           23             LJMP MAIN
                      24     
0219 7DFF             25     DELAY:  MOV R5,#255
021B 7EFF             26     D1:     MOV R6,#255
021D DEFE             27             DJNZ R6,$
021F DDFA             28             DJNZ R5,D1
0221 22               29             RET
                      30     END
                             
                             
A51 MACRO ASSEMBLER  LED                                                                  06/21/2008 15:51:40 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   021BH   A   
DELAY. . . . . . .  C ADDR   0219H   A   
L2 . . . . . . . .  C ADDR   020BH   A   
MAIN . . . . . . .  C ADDR   0200H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
TMP1 . . . . . . .  C ADDR   0100H   A   
TMP2 . . . . . . .  C ADDR   010AH   A   
TMP3 . . . . . . .  C ADDR   0114H   A   
TMP4 . . . . . . .  C ADDR   011EH   A   


REGISTER BANK(S) USED: 0 


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