io口连续执行测试.lst

单片机开发资料光盘-双龙-686M.zip

A51 MACRO ASSEMBLER  IO口羅__謃___馐_                                                     03/09/2001 22:14:13 PAGE     1


MACRO ASSEMBLER A51 V6.02
OBJECT MODULE PLACED IN .\IO口连续执行测试.OBJ
ASSEMBLER INVOKED BY: D:\C51\BIN\A51.EXE .\IO口连续执行测试.ASM SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     ;8X51 I/O口实验,连续执行
0000                   2             ORG     0000H           ; 
0000 758000            3      L0000:  MOV     P0,#00H                ;P0口开LED灯(设低电平LED灯亮,I/O用灌电流,减轻CPU 
                       4                                  ;功耗)
0003 11E0              5             ACALL   S00E0           ;调用延时子程序
0005 7580FF            6             MOV     P0,#0FFH                ;关LED灯,
0008 759000            7             MOV     P1,#00H         ; P1口开LED灯
000B 11E0              8             ACALL   S00E0           ; 调用延时子程序
000D 7590FF            9             MOV     P1,#0FFH                ; 关LED灯
0010 75A000           10             MOV     P2,#00H
0013 11E0             11             ACALL   S00E0
0015 75A0FF           12             MOV     P2,#0FFH
0018 75B000           13             MOV     P3,#00H
001B 11E0             14             ACALL   S00E0
001D 75B0FF           15             MOV     P3,#0FFH
0020 80DE             16             SJMP    L0000           ;循环
00E0                  17             ORG     00E0H   ;延时子程序
00E0 7A28             18      S00E0:  MOV     R2,#28H        ;延时常