beep.lst

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A51 MACRO ASSEMBLER  BEEP                                                                 04/11/2007 12:57:55 PAGE     1


MACRO ASSEMBLER A51 V7.10
OBJECT MODULE PLACED IN beep.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE beep.src SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;SPEAKER程序
                       2     ;2007/01/31
                       3     PUBLIC BEEP
                       4     DE SEGMENT CODE
----                   5     RSEG DE
0000                   6     BEEP:
0000 C2AF              7     CLR EA
0002 7804              8     MOV R0,#04H
0004                   9     NEXT_BEEP:
0004 7EF0             10     MOV R6,#0F0H
                      11     
                      12     
0006                  13     ONE_BEEP:
0006 7D20             14     MOV R5,#20H
0008 B2A6             15     CPL P2^6
                      16     
000A                  17     _LOOP:
000A DDFE             18     DJNZ R5,_LOOP
                      19     
000C DEF8             20     DJNZ R6,ONE_BEEP
                      21     
000E D8F4             22     DJNZ R0,NEXT_BEEP
                      23     
0010 D2AF             24     SETB EA
0012 22               25     RET
                      26     END
A51 MACRO ASSEMBLER  BEEP                                                                 04/11/2007 12:57:55 PAGE     2

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


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

BEEP . . . . . . .  C ADDR   0000H   R   SEG=DE
DE . . . . . . . .  C SEG    0013H       REL=UNIT
EA . . . . . . . .  B ADDR   00A8H.7 A   
NEXT_BEEP. . . . .  C ADDR   0004H   R   SEG=DE
ONE_BEEP . . . . .  C ADDR   0006H   R   SEG=DE
P2 . . . . . . . .  D ADDR   00A0H   A   
_LOOP. . . . . . .  C ADDR   000AH   R   SEG=DE


REGISTER BANK(S) USED: 0 


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