s15-3.lst

键盘控制程序,很适合初学者学习,代码内有详细的中文注示

A51 MACRO ASSEMBLER  S15_3                                                                12/22/2003 17:39:03 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN .\S15-3.OBJ
ASSEMBLER INVOKED BY: C:\KEIL\C51\BIN\A51.EXE .\S15-3.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1             ORG 0000H
0000 0130              2             AJMP MAIN
0030                   3             ORG 030H
0030 758000            4     MAIN:   MOV P0,#00H
0033 115A              5             ACALL DEL10S
0035 1140              6             ACALL KEY
0037 7580FF            7             MOV P0,#0FFH
003A 115A              8             ACALL DEL10S
003C 1140              9             ACALL KEY
003E 0130             10             AJMP MAIN
0040 20B00D           11     KEY:    JB P3.0,RE
0043 B3               12             CPL C
0044 4005             13             JC NEXT1
0046 759000           14             MOV P1,#00H
0049 014E             15             AJMP NEXT2
004B 7590FF           16     NEXT1:  MOV P1,#0FFH
004E 1151             17     NEXT2:  ACALL DEL1S
0050 22               18     RE:     RET
0051 7DFF             19     DEL1S:  MOV R5,#0FFH
0053 7EFF             20     F1:     MOV R6,#0FFH
0055 DEFE             21     F2:     DJNZ R6,F2
0057 DDFA             22             DJNZ R5,F1
0059 22               23             RET
005A A80A             24     DEL10S: MOV R0,0AH
005C 1151             25     LOOP:   ACALL DEL1S
005E D8FC             26             DJNZ R0,LOOP
0060 22               27             RET
                      28             END
A51 MACRO ASSEMBLER  S15_3                                                                12/22/2003 17:39:03 PAGE     2

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


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

DEL10S . . . . . .  C ADDR   005AH   A   
DEL1S. . . . . . .  C ADDR   0051H   A   
F1 . . . . . . . .  C ADDR   0053H   A   
F2 . . . . . . . .  C ADDR   0055H   A   
KEY. . . . . . . .  C ADDR   0040H   A   
LOOP . . . . . . .  C ADDR   005CH   A   
MAIN . . . . . . .  C ADDR   0030H   A   
NEXT1. . . . . . .  C ADDR   004BH   A   
NEXT2. . . . . . .  C ADDR   004EH   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
RE . . . . . . . .  C ADDR   0050H   A   


REGISTER BANK(S) USED: 0 


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