zxw2.lst

这程序是实现单片机与PC机的通信程序 可供大家参考或学习！

A51 MACRO ASSEMBLER  ZXW2                                                                 04/12/2005 20:44:56 PAGE     1


MACRO ASSEMBLER A51 V6.20e
OBJECT MODULE PLACED IN zxw2.OBJ
ASSEMBLER INVOKED BY: D:\学习软件及工具\keil\C51\BIN\A51.EXE zxw2.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1           ORG 0000H
0000 8000              2           JMP BEGIN
0002 75A0FF            3     BEGIN:MOV P2,#0FFH
0005 111D              4           CALL INT_232
0007 AAA0              5           L1: MOV R2,P2
0009 BAEF08            6           CJNE R2,#0EFH,E
000C 112B              7           CALL TX
000E 7B32              8           MOV R3,#50
0010 1154              9           CALL DELAY
0012 80F3             10           JMP L1
0014 A9A0             11       E:  MOV R1,P2
0016 BADFEE           12           CJNE R2,#0DFH,L1
0019 1145             13           CALL RX
001B 0107             14           AJMP L1
001D                  15     INT_232:
001D 759850           16           MOV SCON,#50H
0020 758920           17           MOV TMOD,#20H
0023 758DFD           18           MOV TH1,#0FDH
0026 D28E             19           SETB TR1
0028 D299             20           SETB TI
002A 22               21           RET
002B                  22      TX: 
002B 90005F           23           MOV DPTR,#TAB
002E E4               24           CLR A
002F F8               25           MOV R0,A
0030 3099FD           26       R:  JNB TI,$
0033 C299             27           CLR TI
0035 E8               28           MOV A,R0
0036 93               29           MOVC A,@A+DPTR
0037 08               30           INC R0
0038 B80F04           31           CJNE R0,#15,D
003B E4               32           CLR A
003C F8               33           MOV R0,A
003D 0144             34           AJMP RE
003F                  35       D:  
003F F599             36           MOV SBUF,A
0041 80ED             37           JMP R
0043 F8               38           MOV R0,A
0044 22               39       RE: RET
0045                  40      RX:  
0045 3098FD           41           JNB RI,$
0048 C298             42           CLR RI
004A E599             43           MOV A,SBUF
004C 3099FD           44           JNB TI,$
004F C299             45           CLR TI
0051 F599             46           MOV SBUF,A
0053 22               47           RET 
0054                  48      DELAY:
0054 7C32             49          MOV R4,#50
0056 7D64             50       CC:MOV R5,#100
0058 DDFE             51          DJNZ R5,$
005A DCFA             52          DJNZ R4,CC
005C DBF6             53          DJNZ R3,DELAY
005E 22               54          RET
005F 48415050         55      TAB:DB 'HAPPY NEW YEAR!'
0063 59204E45                
0067 57205945                
006B 415221                  
A51 MACRO ASSEMBLER  ZXW2                                                                 04/12/2005 20:44:56 PAGE     2

                      56           END
A51 MACRO ASSEMBLER  ZXW2                                                                 04/12/2005 20:44:56 PAGE     3

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


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

BEGIN. . . . . . .  C ADDR   0002H   A   
CC . . . . . . . .  C ADDR   0056H   A   
D. . . . . . . . .  C ADDR   003FH   A   
DELAY. . . . . . .  C ADDR   0054H   A   
E. . . . . . . . .  C ADDR   0014H   A   
INT_232. . . . . .  C ADDR   001DH   A   
L1 . . . . . . . .  C ADDR   0007H   A   
P2 . . . . . . . .  D ADDR   00A0H   A   
R. . . . . . . . .  C ADDR   0030H   A   
RE . . . . . . . .  C ADDR   0044H   A   
RI . . . . . . . .  B ADDR   0098H.0 A   
RX . . . . . . . .  C ADDR   0045H   A   
SBUF . . . . . . .  D ADDR   0099H   A   
SCON . . . . . . .  D ADDR   0098H   A   
TAB. . . . . . . .  C ADDR   005FH   A   
TH1. . . . . . . .  D ADDR   008DH   A   
TI . . . . . . . .  B ADDR   0098H.1 A   
TMOD . . . . . . .  D ADDR   0089H   A   
TR1. . . . . . . .  B ADDR   0088H.6 A   
TX . . . . . . . .  C ADDR   002BH   A   


REGISTER BANK(S) USED: 0 


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