lm331.lst

利用单片机的P32管脚进行测量频率,计时很精确

A51 MACRO ASSEMBLER  LM331                                                                08/15/2007 23:48:04 PAGE     1


MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN LM331.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE LM331.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ?PR?xbz          SEGMENT CODE 
                       2             PUBLIC  LM331
----                   3             RSEG  ?PR?xbz
0000                   4     LM331:
                       5             USING   0
0000 00                6     BEGIN:  NOP
0001 758909            7             MOV     TMOD,#09H
0004 758A00            8             MOV     TL0,#00H
0007 758C00            9             MOV     TH0,#00H
000A 00               10     LOOP1:  NOP
000B 20B2FC           11             JB      P3.2,LOOP1
000E D2A9             12             SETB    ET0
0010 D28C             13             SETB    TR0
0012 00               14     LOOP2:  NOP
0013 30B2FC           15             JNB     P3.2,LOOP2
0016 00               16     LOOP3:  NOP
0017 20B2FC           17             JB      P3.2,LOOP3
                      18             
001A C28C             19             CLR     TR0
001C AE8C             20             MOV     R6,TH0
001E AF8A             21             MOV     R7,TL0
0020 758CFF           22             MOV     TH0,#00FFH
0023 758A00           23             MOV     TL0,#00H
0026                  24     ?C0001:
0026 22               25             RET  
                      26             END
A51 MACRO ASSEMBLER  LM331                                                                08/15/2007 23:48:04 PAGE     2

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


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

?C0001 . . . . . .  C ADDR   0026H   R   SEG=?PR?XBZ
?PR?XBZ. . . . . .  C SEG    0027H       REL=UNIT
BEGIN. . . . . . .  C ADDR   0000H   R   SEG=?PR?XBZ
ET0. . . . . . . .  B ADDR   00A8H.1 A   
LM331. . . . . . .  C ADDR   0000H   R   SEG=?PR?XBZ
LOOP1. . . . . . .  C ADDR   000AH   R   SEG=?PR?XBZ
LOOP2. . . . . . .  C ADDR   0012H   R   SEG=?PR?XBZ
LOOP3. . . . . . .  C ADDR   0016H   R   SEG=?PR?XBZ
P3 . . . . . . . .  D ADDR   00B0H   A   
TH0. . . . . . . .  D ADDR   008CH   A   
TL0. . . . . . . .  D ADDR   008AH   A   
TMOD . . . . . . .  D ADDR   0089H   A   
TR0. . . . . . . .  B ADDR   0088H.4 A   


REGISTER BANK(S) USED: 0 


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