8255_1.lst

protues 仿真 intel8255,很好的软件

A51 MACRO ASSEMBLER  8255_1                                                               12/17/2006 23:28:55 PAGE     1


MACRO ASSEMBLER A51 V7.10
OBJECT MODULE PLACED IN 8255_1.OBJ
ASSEMBLER INVOKED BY: d:\Keil\C51\BIN\A51.EXE 8255_1.asm SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;;89C51与8255A连接
                       2     ;;
0000                   3           ORG 0000H
0000 020030            4           LJMP MAIN
0030                   5           ORG 0030H
0030 907FFF            6     MAIN: MOV DPTR,#7FFFH;;控制口地址
0033 7498              7           MOV A,#98H     ;;PA口方式0输入，PB口方式0输出
0035 F0                8           MOVX @DPTR,A
                       9     
0036 907FFD           10           MOV DPTR,#7FFDH;;PB口地址
0039 74AA             11           MOV A,#0AAH
003B F0               12           MOVX @DPTR,A
                      13     
003C 907FFC           14           MOV DPTR,#7FFCH;;PA口地址
003F E0               15           MOVX A,@DPTR
0040 F590             16           MOV P1,A
                      17     
                      18           END
A51 MACRO ASSEMBLER  8255_1                                                               12/17/2006 23:28:55 PAGE     2

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


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

MAIN . . . . . . .  C ADDR   0030H   A   
P1 . . . . . . . .  D ADDR   0090H   A   


REGISTER BANK(S) USED: 0 


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