微机原理上机实验报告

微机原理上机实验报告实验一基本输入/输出实验：本实验使8255端口A工作在方式0并作为输入口，端口B工作在方式0并作为输出口。用一组开关信号接入端口A，端口B输出线接至一组数据灯上，然后通过对8255芯片编程来实现输入/输出功能。8255基本输入/输出实验参考接线图如图所示。流程图：8255B8255B口方式0输出，A口方式0输入AL←8255A口8255B口←AL有按键？结束YN操作步骤：按图示连好线路，在TDPIT中输入如下程序，编译、连接、运行。DATASEGMENTCS0EQU300OHMY8255_AEQUCS0+00HMY8255_BEQUCS0+01HMY8255_CEQUCS0+02HMY8255_MODEEQUCS0+03HDATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOVDX,3003HMOVAL,10000010BOUTDX,ALTEST_IT:MOVDX,3001H INAL,DX MOVDX,3000H OUTDX,AL JMPTEST_ITCODEENDSENDSTART实验现象：闭合开关，对应控制灯泡发光。实验二流水线指示灯显示实验：首先分别将A口和B口写入7FH和FEH，然后分别将该数右移和左移一位，在送到端口上，这样循环下去，从而实现流水灯的显示。8255流水灯显示实验参考接线图如图所示。流程图：8255B8255B口方式0输出AL←7FH循环左移AL8255B口←AL延时有按键？结束YN操作步骤：按图示连好线路，在TDPIT中输入如下程序，编译、连接、运行。DATASEGMENT CSOEQU3000H AEQUCSO+0000H BEQUCSO+0001H CEQUCSO+0002H MEQUCSO+0003HDATAENDSCODESEGMENT ASSUMECS:CODE,DS:DATASTART: MOVAX,DATA MOVDS,AX XORAX,AX MOVAL,10000000B MOVDX,M OUTDX,AL ;MOVDX,B ;INAL,DXL1: MOVAL,00001000B MOVDX,A OUTDX,AL MOVAL,00000001B MOVDX,B OUTDX,AL MOVCX,00FFHC1: MOVBX,CX MOVCX,0FFFFHD1: LOOPD1 MOVCX,BX LOOPC1 MOVAL,00000100B MOVDX,A OUTDX,AL MOVAL,00000010B MOVDX,B OUTDX,AL MOVCX,00FFHC2: MOVBX,CX MOVCX,0FFFFHD2: LOOPD2 MOVCX,BX LOOPC2 MOVAL,00000010B MOVDX,A OUTDX,AL MOVAL,00000100B MOVDX,B OUTDX,AL MOVCX,00FFHC3: MOVBX,CX MOVCX,0FFFFHD3: LOOPD3 MOVCX,BX LOOPC3 MOVAL,00000001B MOVDX,A OUTDX,AL MOVAL,00001000B MOVDX,B OUTDX,AL MOVCX,00FFHC4: MOVBX,CX MOVCX,0FFFFHD4: LOOPD4 MOVCX,BX LOOPC4 JMPL1