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单片机控制led灯点亮

A51 MACRO ASSEMBLER  EG1                                                                  10/30/2012 18:40:45 PAGE     1


MACRO ASSEMBLER A51 V7.07
OBJECT MODULE PLACED IN eg1.OBJ
ASSEMBLER INVOKED BY: H:\Program Files\Keil\C51\BIN\A51.EXE eg1.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

  00A0                 1     LEDRED   BIT  P2.0
  00A1                 2     LEDYELLOW BIT P2.1
0000                   3     ORG  0000H
0000 020030            4     LJMP START
0030                   5     ORG  0030H
0030                   6     START:
0030 7803              7           MOV  R0,#3
0032 7F05              8           MOV  R7,#5
0034                   9     S1:
0034 C2A0             10           CLR  LEDRED
0036 115A             11           CALL DELAY2
0038 D2A0             12           SETB LEDRED
003A 115A             13           CALL DELAY2
003C D8F6             14           DJNZ R0,S1
003E 8001             15           JMP  S2
0040 32               16           RETI
0041                  17     S2:
0041 C2A1             18           CLR  LEDYELLOW
0043 114D             19           CALL DELAY1
0045 D2A1             20           SETB LEDYELLOW
0047 114D             21           CALL DELAY1
0049 DFF6             22           DJNZ R7,S2
004B 801A             23          JMP S
004D 7B05             24     DELAY1:MOV  R3,#05H
004F 7AFF             25     DEL1:MOV  R2,#0FFH
0051 79FF             26     DEL2:MOV  R1,#0FFH
0053 D9FE             27     DEL3:DJNZ  R1,DEL3;275*3us=825us
0055 DAFA             28          DJNZ  R2,DEL2;0.825ms*275=226ms
0057 DBF6             29          DJNZ  R3,DEL1;225ms*5=1125ms
0059 32               30          RETI
005A 7E09             31     DELAY2:MOV   R6,#09H
005C 7DFF             32     DEL4:MOV  R5,#0FFH
005E 7CFF             33     DEL5:MOV  R4,#0FFH
0060 DCFE             34     DEL6:DJNZ R4,DEL6;275*3=825us
0062 DDFA             35          DJNZ R5,DEL5;0.825ms*275=226ms
0064 DEF6             36          DJNZ R6,DEL4;225ms*9=2025ms
0066 32               37          RETI
0067                  38     S:   
                      39          END
A51 MACRO ASSEMBLER  EG1                                                                  10/30/2012 18:40:45 PAGE     2

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


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

DEL1 . . . . . . .  C ADDR   004FH   A   
DEL2 . . . . . . .  C ADDR   0051H   A   
DEL3 . . . . . . .  C ADDR   0053H   A   
DEL4 . . . . . . .  C ADDR   005CH   A   
DEL5 . . . . . . .  C ADDR   005EH   A   
DEL6 . . . . . . .  C ADDR   0060H   A   
DELAY1 . . . . . .  C ADDR   004DH   A   
DELAY2 . . . . . .  C ADDR   005AH   A   
LEDRED . . . . . .  B ADDR   00A0H.0 A   
LEDYELLOW. . . . .  B ADDR   00A0H.1 A   
P2 . . . . . . . .  D ADDR   00A0H   A   
S. . . . . . . . .  C ADDR   0067H   A   
S1 . . . . . . . .  C ADDR   0034H   A   
S2 . . . . . . . .  C ADDR   0041H   A   
START. . . . . . .  C ADDR   0030H   A   


REGISTER BANK(S) USED: 0 


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