A51 MACRO ASSEMBLER  UP51S001                                                             12/12/2004 20:42:16 PAGE     1


MACRO ASSEMBLER A51 V7.08a
OBJECT MODULE PLACED IN uP51s001.OBJ
ASSEMBLER INVOKED BY: C:\KEIL\C51\BIN\A51.EXE uP51s001.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     
                       2     
                       3     
                       4     
                       5     
                       6     
                       7     
                       8     
                       9     
                      10     
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                      12     
                      13     
                      14     
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                      17     
                      18     
0000                  19             ORG     0000H
0000 020003           20             LJMP    MAIN
                      21     
0003                  22     MAIN:
0003 7580FE           23             MOV     P0,#0FEH                ; 初始點亮LED1 
0006 7FFE             24             MOV     R7,#0FEH                ; 保存P0
0008                  25     MAIN_LP:
0008 120012           26             LCALL   DELAY                   ; 延時
000B EF               27             MOV     A,R7                    ; 
000C 23               28             RL      A                       ; 循環移位
000D FF               29             MOV     R7,A                    ; 保存到R7
000E F580             30             MOV     P0,A                    ; 點亮下一個LED
0010 80F6             31             JMP     MAIN_LP                 ; 不停循環
                      32     
                      33     ;===========================================================
0012                  34     DELAY:                                  ; 延時子程序
0012 78FF             35             MOV     R0,#0FFH
0014 79FF             36             MOV     R1,#0FFH
0016                  37     DLY_LP:
0016 00               38             NOP
0017 00               39             NOP
0018 D8FC             40             DJNZ    R0,DLY_LP
001A 78FF             41             MOV     R0,#0FFH
001C D9F8             42             DJNZ    R1,DLY_LP 
001E 22               43             RET
                      44             
                      45             END
A51 MACRO ASSEMBLER  UP51S001                                                             12/12/2004 20:42:16 PAGE     2

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


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

DELAY. . . . . . .  C ADDR   0012H   A   
DLY_LP . . . . . .  C ADDR   0016H   A   
MAIN . . . . . . .  C ADDR   0003H   A   
MAIN_LP. . . . . .  C ADDR   0008H   A   
P0 . . . . . . . .  D ADDR   0080H   A   


REGISTER BANK(S) USED: 0 

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