interrupt_example.lst

提供89c51/52单蕊片实习外部中断例程

A51 MACRO ASSEMBLER  INTERRUPT_EXAMPLE                                                    05/26/2008 15:08:17 PAGE     1


MACRO ASSEMBLER A51 V7.09
OBJECT MODULE PLACED IN interrupt_example.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE interrupt_example.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     
                       2      
                       3     
                       4     
                       5     
                       6     
                       7     
                       8     
                       9     
                      10     
                      11     
                      12     
                      13     
0000                  14             ORG 0H                  ;LED: P3.4   Output: P3.5
0000 8023             15             JMP STR         
0003                  16             ORG 3H
0003 806D             17             JMP INTA        ;SYS OFF LINE
0013                  18             ORG 13H
0013 8060             19             JMP INTB        ;SYS ON LINE
0023                  20             ORG 23H
0023 8024             21             JMP RE
                      22     
0025 75A895           23     STR:    MOV IE,#10010101B  ;set micro chip interrupt argument
0028 75B815           24             MOV IP,#00010101B
002B D288             25             SETB IT0
002D D28A             26             SETB IT1
002F 759850           27             MOV SCON,#01010000B
0032 758922           28             MOV TMOD,#00100010B
0035 758140           29             MOV SP,#40H
0038 758DFD           30             MOV TH1,#0FDH
003B D28E             31             SETB TR1
                      32             
003D C298             33     START:  CLR RI
003F C299             34             CLR TI
0041 C2B5             35             CLR P3.5        ;SYS OFF_LINE
0043 D2B4             36             SETB P3.4       ;LED INDICATE WORK
                      37     
0045 1163             38     LOOP1:  CALL DELAY
0047 80FC             39             JMP LOOP1
                      40     
0049 309903           41     RE:     JNB TI,REC      ;RS-232 interrupt 
004C C299             42             CLR TI
004E 32               43             RETI
                      44     
004F 109801           45     REC:    JBC RI,RECE     ;If receiving flag is ture than receive it
0052 32               46             RETI
                      47     
0053 E599             48     RECE:   MOV A,SBUF
0055 B44103           49             CJNE A,#41H,CHK1; IF RECEIVE "A" THAN SYS ON_LINE
0058 D2B5             50             SETB P3.5
005A 32               51             RETI
                      52     
005B B44203           53     CHK1:   CJNE A,#42H,FREEZE
005E C2B5             54             CLR P3.5        ; IF RECEIVE "B" THAN SYS OFF_LINE
0060 32               55             RETI
                      56     
0061 E4               57     FREEZE: CLR A
0062 32               58             RETI
A51 MACRO ASSEMBLER  INTERRUPT_EXAMPLE                                                    05/26/2008 15:08:17 PAGE     2

                      59     
0063 B2B4             60     DELAY:  CPL P3.4      ;flash the PIN3.4 LED   and do a little delay
0065 7804             61             MOV R0,#004H
0067 79FF             62     D1:     MOV R1,#0FFH
0069 7AFF             63     D2:     MOV R2,#0FFH
006B DAFE             64     D3:     DJNZ R2,D3
006D D9FA             65             DJNZ R1,D2
006F D8F6             66             DJNZ R0,D1
0071 22               67             RET
                      68     
0072 C2B5             69     INTA:   CLR P3.5      ;interrupt INT0 set output PIN3.5 LOW
0074 32               70             RETI
                      71     
0075 D2B5             72     INTB:   SETB P3.5     ;interrupt INT1 set output PIN3.5 HIGH
0077 32               73             RETI
                      74                     
                      75             END
                             
A51 MACRO ASSEMBLER  INTERRUPT_EXAMPLE                                                    05/26/2008 15:08:17 PAGE     3

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


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

CHK1 . . . . . . .  C ADDR   005BH   A   
D1 . . . . . . . .  C ADDR   0067H   A   
D2 . . . . . . . .  C ADDR   0069H   A   
D3 . . . . . . . .  C ADDR   006BH   A   
DELAY. . . . . . .  C ADDR   0063H   A   
FREEZE . . . . . .  C ADDR   0061H   A   
IE . . . . . . . .  D ADDR   00A8H   A   
INTA . . . . . . .  C ADDR   0072H   A   
INTB . . . . . . .  C ADDR   0075H   A   
IP . . . . . . . .  D ADDR   00B8H   A   
IT0. . . . . . . .  B ADDR   0088H.0 A   
IT1. . . . . . . .  B ADDR   0088H.2 A   
LOOP1. . . . . . .  C ADDR   0045H   A   
P3 . . . . . . . .  D ADDR   00B0H   A   
RE . . . . . . . .  C ADDR   0049H   A   
REC. . . . . . . .  C ADDR   004FH   A   
RECE . . . . . . .  C ADDR   0053H   A   
RI . . . . . . . .  B ADDR   0098H.0 A   
SBUF . . . . . . .  D ADDR   0099H   A   
SCON . . . . . . .  D ADDR   0098H   A   
SP . . . . . . . .  D ADDR   0081H   A   
START. . . . . . .  C ADDR   003DH   A   
STR. . . . . . . .  C ADDR   0025H   A   
TH1. . . . . . . .  D ADDR   008DH   A   
TI . . . . . . . .  B ADDR   0098H.1 A   
TMOD . . . . . . .  D ADDR   0089H   A   
TR1. . . . . . . .  B ADDR   0088H.6 A   


REGISTER BANK(S) USED: 0 


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