light.lst

汇编小程序

A51 MACRO ASSEMBLER  LIGHT                                                                07/08/2012 20:46:45 PAGE     1


MACRO ASSEMBLER A51 V8.02a
OBJECT MODULE PLACED IN light.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE light.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1              ORG 0000H
0000 0130              2                      AJMP MAIN
0030                   3                      ORG 0030H
0030 74A2              4     MAIN:    MOV A,#0A2H         ;累加器A载入初始值0A2H
0032 78DD              5              MOV R0,#0DDH            ;寄存器R0载入初始值0DDH
0034 F4                6                      CPL A                           ;累加器A求反
0035 F580              7                      MOV P0,A                        ;累加器A内容送入P0口
0037 74A2              8                      MOV A,#0A2H             ;累加器A载入初始值
0039 58                9                      ANL A,R0                        ;寄存器R0与累加器A相‘与’并把结果送入累加
                             器A中
003A 113E             10                      ACALL DEL                       ;延时
003C 0130             11                      AJMP MAIN                       ;跳到主程序
003E 7D01             12     DEL:     MOV R5,#01H             ;延时子程序
0040 7EFF             13     DEL1:    MOV R6,#0FFH
0042 7FFF             14     DEL2:    MOV R7,#0FFH
0044 DFFE             15     DEL3:    DJNZ R7,DEL3
0046 DEFA             16              DJNZ R6,DEL2
0048 DDF6             17                      DJNZ R5,DEL1
004A 22               18                      RET
                      19                      END
A51 MACRO ASSEMBLER  LIGHT                                                                07/08/2012 20:46:45 PAGE     2

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


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

DEL. . . . . . . .  C ADDR   003EH   A   
DEL1 . . . . . . .  C ADDR   0040H   A   
DEL2 . . . . . . .  C ADDR   0042H   A   
DEL3 . . . . . . .  C ADDR   0044H   A   
MAIN . . . . . . .  C ADDR   0030H   A   
P0 . . . . . . . .  D ADDR   0080H   A   


REGISTER BANK(S) USED: 0 


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