delay.lst

超声波的发射和接收

A51 MACRO ASSEMBLER  DELAY                                                                04/11/2009 10:23:23 PAGE     1


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

LOC  OBJ            LINE     SOURCE

                       1                         NAME       DELAY
                       2     ?PR?_DELAY?DELAY    SEGMENT    CODE
                       3                         PUBLIC     _DELAY
----                   4                         RSEG       ?PR?_DELAY?DELAY
0000 C0E0              5     _DELAY:             PUSH       ACC                ;2
0002 EF                6                         MOV        A,R7               ;1
0003 6001              7                         JZ         DELA1              ;2
0005 0E                8                         INC        R6                 ;1
0006 7D32              9     DELA1:              MOV        R5,#50D            ;2
0008 DDFE             10                         DJNZ       R5,$               ;2
000A DFFA             11                         DJNZ       R7,DELA1           ;2
000C DEF8             12                         DJNZ       R6,DELA1           ;2
000E D0E0             13                         POP        ACC                ;2
0010 22               14                         RET                           ;2
                      15     
                      16                         END
                             
A51 MACRO ASSEMBLER  DELAY                                                                04/11/2009 10:23:23 PAGE     2

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


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

?PR?_DELAY?DELAY .  C SEG    0011H       REL=UNIT
ACC. . . . . . . .  D ADDR   00E0H   A   
DELA1. . . . . . .  C ADDR   0006H   R   SEG=?PR?_DELAY?DELAY
DELAY. . . . . . .  N NUMB   -----       
_DELAY . . . . . .  C ADDR   0000H   R   SEG=?PR?_DELAY?DELAY


REGISTER BANK(S) USED: 0 


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