21.lst

手动扩展外部中断INT0、INT1

A51 MACRO ASSEMBLER  21                                                                   12/18/2007 20:23:37 PAGE     1


MACRO ASSEMBLER A51 V7.08a
OBJECT MODULE PLACED IN 21.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE 21.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

0000                   1         ORG 0000H
0000 7590FF            2         MOV P1,#0FFH
0003 E590              3     ABC: MOV A,P1
0005 C4                4          SWAP A
0006 540F              5          ANL A,#0FH
0008 F590              6          MOV P1,A
000A 4390F0            7          ORL P1,#0F0H
000D 80F4              8          SJMP ABC
                       9          END
A51 MACRO ASSEMBLER  21                                                                   12/18/2007 20:23:37 PAGE     2

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


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

ABC. . . . . . . .  C ADDR   0003H   A   
P1 . . . . . . . .  D ADDR   0090H   A   


REGISTER BANK(S) USED: 0 


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