led.lst

单片机开发板源程序 适合初学者 第五部分 报警产生器

A51 MACRO ASSEMBLER  LED                                                                  07/29/2007 13:48:27 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN LED.OBJ
ASSEMBLER INVOKED BY: C:\Tools\Keil\C51\BIN\A51.EXE LED.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1             ORG 0
0000 7A08              2     START:  MOV     R2,#8
0002 74FE              3             MOV     A,#0FEH
0004 D3                4             SETB    C
0005 F580              5     LOOP:   MOV     P0,A
0007 12001A            6             LCALL   DELAY
000A 33                7             RLC     A
000B DAF8              8             DJNZ    R2,LOOP
000D 7A08              9             MOV     R2,#8
000F F580             10     LOOP1:  MOV     P0,A
0011 12001A           11             LCALL   DELAY                   
0014 13               12             RRC     A
0015 DAF8             13             DJNZ    R2,LOOP1
0017 020000           14             LJMP    START
001A 7D14             15     DELAY:  MOV     R5,#20                  ;
001C 7E14             16     D1:     MOV     R6,#20
001E 7FF8             17     D2:     MOV     R7,#248
0020 DFFE             18             DJNZ    R7,$
0022 DEFA             19             DJNZ    R6,D2
0024 DDF6             20             DJNZ    R5,D1
0026 22               21             RET
                      22             END
A51 MACRO ASSEMBLER  LED                                                                  07/29/2007 13:48:27 PAGE     2

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


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

D1 . . . . . . . .  C ADDR   001CH   A   
D2 . . . . . . . .  C ADDR   001EH   A   
DELAY. . . . . . .  C ADDR   001AH   A   
LOOP . . . . . . .  C ADDR   0005H   A   
LOOP1. . . . . . .  C ADDR   000FH   A   
P0 . . . . . . . .  D ADDR   0080H   A   
START. . . . . . .  C ADDR   0000H   A   


REGISTER BANK(S) USED: 0 


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