A51 MACRO ASSEMBLER  DYN_SCAN_LED                                                         07/25/2006 22:38:52 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN Dyn Scan LED.OBJ
ASSEMBLER INVOKED BY: e:\Program Files\Keil\C51\BIN\A51.EXE Dyn Scan LED.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

  0030                 1     DBUF    EQU             30H                     ;置存儲區首址
  0040                 2     TEMP    EQU     40H                     ;置緩沖區首址
0000                   3                     ORG     00H
0000 753001            4                     MOV     30H,#1                  ;存入數據
0003 753106            5             MOV     31H,#6
0006 753208            6             MOV     32H,#8
0009 753301            7             MOV     33H,#1
000C 753406            8             MOV     34H,#6
000F 753508            9             MOV     35H,#8
0012 7830             10             MOV     R0,#DBUF
0014 7940             11             MOV     R1,#TEMP
0016 7A06             12             MOV     R2,#6                   ;6位顯示器
0018 900038           13             MOV     DPTR,#SEGTAB            ;置段碼表首址
001B E6               14     DP00:   MOV     A,@R0                   ;取要顯示的數據
001C 93               15             MOVC    A,@A+DPTR               ;查表取段碼
001D F7               16             MOV     @R1,A                   ;段碼存入暫存器
001E 09               17             INC     R1
001F 08               18             INC     R0
0020 DAF9             19             DJNZ    R2,DP00
0022 7840             20     DISP0:  MOV     R0,#TEMP                ;顯示子程序 
0024 7906             21             MOV     R1,#6                   ;掃描6次
0026 7A01             22             MOV     R2,#01H                 ;決定數據動態顯示方向
0028 E6               23     DP01:   MOV     A,@R0
0029 F580             24             MOV     P0,A                    ;段碼輸出
002B EA               25                     MOV     A,R2                    ;取位碼
002C F590             26                     MOV     P1,A                    ;位碼輸出
002E 1142             27                     ACALL   DELAY                   ;調用延時
0030 EA               28                     MOV     A,R2
0031 23               29                     RL      A
0032 FA               30                     MOV     R2,A
0033 08               31                     INC     R0
0034 D9F2             32                     DJNZ    R1,DP01
0036 80EA             33                     SJMP    DISP0
0038 3F065B4F         34     SEGTAB: DB      3FH,06H,5BH,4FH,66H         
003C 66                      
003D 6D7D077F         35             DB      6DH,7DH,07H,7FH,6FH               
0041 6F                      
0042 7C03             36     DELAY:  MOV             R4,#03H             ;延時子程序   
0044 7DFF             37     AA1:    MOV             R5,#0FFH
0046 DDFE             38     AA:     DJNZ    R5,AA
0048 DCFA             39                     DJNZ    R4,AA1
004A 22               40                     RET
                      41                     END
A51 MACRO ASSEMBLER  DYN_SCAN_LED                                                         07/25/2006 22:38:52 PAGE     2

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


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

AA . . . . . . . .  C ADDR   0046H   A   
AA1. . . . . . . .  C ADDR   0044H   A   
DBUF . . . . . . .  N NUMB   0030H   A   
DELAY. . . . . . .  C ADDR   0042H   A   
DISP0. . . . . . .  C ADDR   0022H   A   
DP00 . . . . . . .  C ADDR   001BH   A   
DP01 . . . . . . .  C ADDR   0028H   A   
P0 . . . . . . . .  D ADDR   0080H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
SEGTAB . . . . . .  C ADDR   0038H   A   
TEMP . . . . . . .  N NUMB   0040H   A   


REGISTER BANK(S) USED: 0 

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