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1、一、设计题目点阵滚动广告牌二、设计内容 （1）利用单片机I/O口或以扩展锁存器的方式控制点阵显示。 （2）掌握单片机与1616点阵块之间接口电路设计及编程。 （3）利用实验系统1616点阵实验单元，要求编制程序实现汉字点阵从下倒上滚动循环显示。三、设计原理及方案1、硬件设计原理图实验线路连接：（1）对于后缀名含有“H”的机型，按实验电路图连接138译码输入端A.B.C，其中A连A2，B连A3，C连A4，138使能控制输入端G与位于地址线A0引出孔所在位置下方的使能控制输出端G作对应连接，该端的寻址范围为0FFE0H0FFFFH。（2）用一8芯扁平电缆把点阵单元总线接口与系统单元总线（D0D7）
2、任一接口相连。（3）用一根双头实验线把点阵单元的片选信号CS插孔与译码输出插孔Y0相连。（4）用一根双头实验线把点阵单元的写信号WR插孔与系统控制信号插孔WR相连。硬件电路图： 2、软件设计流程图四、设计方案源程序 CODE SEGMENT ASSUME CS:CODE,DS:CODE,ES:CODE ORG 3AD2H;=HE14: JMP STARTLED0 equ 0ffe3h ;列代码高段(字形)高八位接口地址LED1 equ 0ffe0h ;列代码低段(字形)低位接口地址JED0 equ 0ffe2h ;行扫描高段(字位)高八位接口地址JED1 equ 0ffe1h ;行扫描低段(字
3、位)低八位接口地址;=START: JMP XB13;=x01a: mov BUF+2,00h ;清列值x023: mov bx,OFFSET BUF ;取列值 mov al,02h xlat cmp al,10h ;减16(十进制数) jc x0d2 ;末满16列继续扫描下一列 ret ;本次扫描完毕返回主程序x0d2: MOV dx,0002H MOV ah,00h MUL dx ;当前列乘02 mov cx,ax call xb1f ;= 送扫描代码 = mov dx,led0 ;列代码送高八位锁存器 OUT DX,AL MOV DX,led1 ;列代码送低八位锁存器 mov al,ah
4、 OUT DX,Al ;= 取行代码 = mov bx,offset buf mov al,02h xlat inc al mov BUF+2,al ;列指针加1 mov ah,00h mov cx,ax mov al,01h jmp x083x07e: SAL ax,1x083: loop x07e mov dx,jed0 ;行代码送高八位锁存器 OUT DX,AL MOV DX,jed1 ;行代码送低八位锁存器 mov al,ah OUT DX,Al mov cx,0040h ;当前行锁定显示250u秒 loop $ mov al,00h ;关闭显示 mov dx,jed0 out dx,
5、al mov dx,jed1 OUT dx,al jmp x023 ;继续下1行;=x097: mov al,00h ;关闭显示 mov dx,jed0 out dx,al mov dx,jed1 OUT dx,al ;=x0a0: mov al,00h ;清扫描个数寄存器 mov BUF+3,al ;从第一个开始x0a2: mov bx,OFFSET buf ;取当前扫描个数 mov al,03h xlat cmp al,16h ;减16(十进制数) jnc x0a0 ;满16个返回从第一个开始 ;= MOV ah,00H mov dx,0020h mul dx mov bx,OFFSET
6、stls add ax,bX mov BUF,aL MOV BUF+1,AH ;= mov al,00h ;清扫描次数寄存器 mov BUF+4,alx0bd: mov bx,OFFSET buf ;取当前扫描个数 mov al,04h xlat cmp al,64h ;减64(十进制数) jnc x0cf ;= call x01a ;扫描显示当前字体 ;= mov bx,OFFSET buf ;扫描次数加1 mov al,04h xlat inc al mov BUF+4,al jmp x0bd ;=x0cf: mov bx,OFFSET BUF ;扫描个数加1 mov al,03h xla
7、t inc al mov BUF+3,al jmp x0a2;=STLS:;欢 DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00HDB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H,0
8、0H,80H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00HDB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H DB DB00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH DB 00H,00H,00H,00H,00
9、H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00
10、H,00H,00H,00H,00H DB 00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H,28H,40H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H DB 00H,80H
11、,0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H,28H,40H,10H,40H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H,00H,80H DB 0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H,28H,40H,10H,40H,28H,40H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H DB 04H,0FCH,45H,04H,46H,48H,28H,40H,2
12、8H,40H,10H,40H,28H,40H,24H,0A0H DB 00H,00H,00H,00H,00H,00H,00H,00H, 00H,80H,00H,80H,0FCH,80H,04H,0FCH DB 45H,04H,46H,48H,28H,40H,28H,40H,10H,40H,28H,40H,24H,0A0H,44H,0A0H DB 00H,00H,00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H DB 46H,48H,28H,40H,28H,40H,10H,40H,28H,40H,24H,0A0H,44H,0A0H
13、,81H,10H DB 00H,00H,00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H DB 28H,40H,28H,40H,10H,40H,28H,40H,24H,0A0H,44H,0A0H,81H,10H,01H,08H DB 00H,00H,00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H DB 28H,40H,10H,40H,28H,40H,24H,0A0H,44H,0A0H,81H,10H,01H,08H,02H,0EH ;迎 DB 00H,00H,4
14、1H,84H,26H,7EH,14H,44H,04H,44H,04H,44H,0F4H,44H,14H,0C4H DB 15H,44H,16H,54H,14H,48H,10H,40H,10H,40H,28H,46H,47H,0FCH,00H,00H;光 DB 01H,00H,21H,08H,11H,0CH,09H,10H,09H,20H,01H,04H,0FFH,0FEH,04H,40H DB 04H,40H,04H,40H,04H,40H,08H,40H,08H,42H,10H,42H,20H,3EH,40H,00H;临 DB 10H,80H,10H,80H,51H,04H,51H,0FEH
15、,52H,00H,54H,80H,58H,60H,50H,24H DB 57H,0FEH,54H,44H,54H,44H,54H,44H,54H,44H,14H,44H,17H,0FCH,14H,04H ;嘉 DB 01H,08H,7FH,0FCH,01H,00H,3FH,0F8H,00H,00H,1FH,0F0H,10H,10H,1FH,0F0H DB 04H,44H,0FFH,0FEH,10H,08H,7EH,0FCH,12H,88H,12H,88H,2AH,0F8H,44H,88H;兴 DB 02H,00H,02H,08H,21H,08H,11H,10H,19H,10H,09H,20H,
16、00H,20H,00H,44H DB 0FFH,0FEH,00H,00H,00H,00H,04H,40H,0CH,20H,10H,18H,20H,0CH,40H,04H;学 DB 22H,08H,11H,08H,11H,10H,00H,20H,7FH,0FEH,40H,02H,80H,04H,1FH,0E0H DB 00H,40H,01H,84H,0FFH,0FEH,01H,00H,01H,00H,01H,00H,05H,00H,02H,00H;院 DB 00H,80H,78H,40H,4FH,0FEH,54H,02H,58H,14H,63H,0F8H,50H,00H,48H,08H DB 4
17、FH,0FCH,48H,0A0H,68H,0A0H,50H,0A0H,41H,22H,41H,22H,42H,1EH,4CH,00H;！ DB 00H,00H,00H,00H,00H,00H,00H,00H,10H,00H,10H,00H,10H,00H,10H,00H DB 10H,00H,10H,00H,10H,00H,10H,00H,10H,00H,00H,00H,10H,00H,00H,00H;=xb13: MOV CX,0000H MOV AX,0000H MOV BX,OFFSET STLS ;取汉字表首址 MOV AX,BX MOV BUF,AL MOV BUF+1,AH ;存汉
18、字表指针单元 JMP X097;=取与当前列对应的汉字代码=XB1F: MOV BX,OFFSET BUF ;取当前汉字首址 MOV AX,BX ADD AX,CX ;当前汉字首址加列值 MOV BX,AX MOV AX,BX ;取当前列扫描代码 ;= MOV Bl,00H MOV Cl,Al ROL CL,1 JNC XB_0 OR BL,01hXB_0: ROL CL,1 JNC XB_2 or bl,02hXB_2: ROL CL,1 JNC XB_3 or bl,04hXB_3: ROL CL,1 JNC XB_4 or bl,08hXB_4: ROL CL,1 JNC XB_5 or
19、 bl,10hXB_5: ROL CL,1 JNC XB_6 or bl,20hXB_6: ROL CL,1 JNC XB_7 or bl,40hXB_7: ROL CL,1 JNC XB_8 or bl,80hXB_8: mov al,bl ret;=BUF DB ?,?,?,?,?,?CODE ENDS END HE14五、设计实施结果当实验程序装载完毕，实验运行时，“欢迎光临嘉兴学院”字样在点阵显示模块上从下向上移动，并循环显示。六、总结以前我学习汇编语言时感觉很有难度。当知道要做课程设计的时候心里面感觉有些害怕和担心， 担心自己不会或者做不好。但是当真的要做的时候也只好进自己作大的努力
20、去做。我在这个过程中有很多自己的感受，那就是感觉汇编语言真的是很神奇，街上的滚动广告牌我自己竟也能设计出来。我们从开始的担心和害怕渐渐变成了享受，看着自己做出来的东西，心里面的感觉真的很好。虽然我们做的东西都还很简单，但是毕竟是我们自己亲手，很有成就感。微机原理课程设计和其他课程设计有共同的地方，那就是不仅加深和巩固了我们的课本知识，而且增强了我们自己动脑，自己动手的能力。这次课程设计让我对实验台有了足够的了解，让我知道了实验台上各个模块的用法；而且它还让我们对自己动手写程序来控制实验台的运作有了一定的基础。虽然实验台只是一个小型的模拟平台，但是通过对它的学习和操作，我们对有关接口的知识将会有
21、一个更广泛的认识，而且它对我们以后的学习也会有帮助的。 实验是需要配合的，我们两个人合作默契，做事的效率就高了很多。虽然有时候会为了一些细节争论不休，但最后得出的总是最好的结论。而且实验也教会我们在团队中要善于与人相处，与人共事，不要一个人解决所有问题。 总之，这次课程设计对于我们有很大的帮助，通过课程设计，我更加深入地理解了，微机原理课程上讲到的各种芯片的功能，以及引脚的作用，同时加深了对于主要芯片的应用的认识，同时在试验室的环境里熟悉了汇编程序的编写过程和运行过程，最后还提高了自己的动手能力。感谢老师的悉心指导。七、参考文献1 侯晓霞，微型计算机原理及应用M，化学工业出版社，20072 杨文显，现代微型计算机与接口教程M，清华大学出版社，20033 陆红伟， 微机原理实验与课程设计指导书M，中国电力出版社，2006年4 顾滨，8086微型计算机组成、原理及接口M，机械工业出版社，20015 戴梅萼，微型计算机技术及应用M，清华大学出版社，2005
