汉字点阵程序

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1、实验目的 利用单片机I/O口或以扩展锁存器的方式控制点阵显示。 掌握单片机与1616点阵块之间接口电路设计及编程。 本实验仅适用于Dais系列H+增强型机种。实验内容 利用实验系统1616点阵实验单元，以两种方式控制点阵显示。要求编制程序实现汉字点阵循环显示。I/O口地址分配 I/O口分别提供字形代码（列码）、扫描信号（行码），凡字形代码位为“1”、行扫描信号为“1”点亮该点，否则熄灭；通过逐行扫描循环点亮字形或曲线。实验电路实验步骤 （一）CPU I/O口控制方式 用40芯扁平电缆把MCS-51仿真口与40芯点阵接口作对应的连接。 在“P.”状态下按“0F14F20EV”，进行实验程序装载。

2、 在闪动“P.”状态下，按“F2/NX”键把当前工作模式设置为“仿真”工作状态。“P.”状态下键入“ 0FF0EXEC”命令,以连续方式运行点阵显示单元控制程序。本控制方式仅适用于Dais-52JH、Dais-89H机型。 （二）扩展锁存器方式对于后缀名含有“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。 对于后缀名含有“H”的机型，把点阵单元的片选信号CS插孔与译码输出插孔Y0相连。 用一8芯扁平电缆把点阵单元总线接口与数

3、据总线（D0D7）任一接口相连。 用一根双头实验线把点阵单元的写信号WR插孔与位于六位LED显示左下方的系统控制信号WR/IOWR相连。扩展锁存器方式下实验程序的运行 在“P.”状态下按“0F14F20EV”，进行实验程序装载。 在“P.”状态下键入“0188EXEC”命令，以连续方式运行点阵显示单元控制程序。 点阵显示模块应以循环方式显示“欢迎选用启东达爱思计算机有限公司Dais系列产品”字样。 ;=硬件实验二十四1616点阵显示实验=;本程序使用扩展锁存器方式，I/O口方式程序详见asm51he24_89.asm;注意：Dais-89H+只能使用I/O方式的程序：asm51he24_89.

4、asm;=27个汉字移位循环显示主程序= ORG 0000H LJMP XB13;=点阵扫描子程序=X01A: CLR A ;清列值 MOV 0EH, A ;指向零列X023: MOV A, 0EH ;取列值 CLR C SUBB A, #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 0F0H, #02H MOV A, 0EH MUL AB ;当前列值与“2”进行十进制调正 MOV 82H, A ;调正结果送数据指针DPTR MOV 83H, 0F0H LCALL XB1F ;取与当前列对应的扫描代码 MOV 20

5、H, A ;= LCALL XB4E ;扫描代码送高八位锁存器 ;= MOV A, 0EH ;取列值 MOV 0F0H, #02H ;当前列值与“2”进行十进制调正 MUL AB ADD A, #01H ;调正结果加1送数据指针DPTR MOV R7, A CLR A ADDC A, 0F0H MOV 82H, R7 MOV 83H, A LCALL XB1F ;取与当前列对应的扫描代码 ;= PUSH DPH ;扫描代码送低八位锁存器 PUSH DPL MOV DPTR,#0FFE0H MOVX DPTR,A ;= MOV A, #01H ;代码扫描从第一行开始 MOV R6, #00H M

6、OV R0, 0EH ;取与当前代码扫描对应的列值 INC R0 ;列指针加1 SJMP X083X07E: CLR C ;当前代码扫描对应行的查找 RLC A ;行高八位左移一位 XCH A, R6 RLC A ;行低八位带进位左移一位 XCH A, R6X083: DJNZ R0, X07E ;不为当前代码扫描对应行返上继续调正 ;= MOV DPTR,#0FFE2H ;当前行码送高八位锁存器 MOVX DPTR,A MOV DPTR,#0FFE1H ;当前行码送低八位锁存器 MOV A,R6 MOVX DPTR,A MOV R6,#80H ;当前行锁定显示250u秒 DJNZ R6,$

7、;= CLR A ;关闭显示 MOV DPTR,#0FFE1H MOVX DPTR,A ;行高八位锁存器清零 INC DPTR MOVX DPTR,A ;行低八位锁存器清零 POP DPL POP DPH ;= INC 0EH ;列指针加1 AJMP X023 ;继续下1行 ;=X097: CLR A MOV DPTR,#0FFE1H MOVX DPTR,A INC DPTR MOVX DPTR,A ;=X0A0: CLR A ;清扫描个数寄存器 MOV R5, A ;从第一个开始扫描X0A2: MOV A, R5 ;取当前扫描个数 CLR C;= 确定要显示的汉字个数=; 用户可自定义汉字个

8、数 SUBB A, #19H ;共扫描83个汉字 JNC X0A0 ;扫描个数满83个返回从第一个开始 MOV A, R5;= 确定显示为循环方式=;用户可自定义为移位循环方式 MOV DPTR,#STLS ;指向汉字表首址 MOV 0F0H, #20H ; 设定以完整的一个汉字为最小循环单位 MUL AB ADD A, dpl MOV 0ah, A MOV A, dph ADDC A, 0F0H MOV 09H, A CLR A MOV R4, AX0BD: MOV A, R4 CLR C SUBB A, #64H ;每个汉字扫描64次 JNC X0CF ;当前汉字扫描次数满64次转 MOV

9、 R2,09H MOV R1, 0AH ACALL X01A INC R4 ;扫描次数加1 SJMP X0BDX0CF: INC R5 ;扫描个数加1指向下一个汉字 SJMP X0A2;= 汉字代码表=STLS:;欢DB 00H,80H,00H,80H,0FCH,80H,04H,0FCH,45H,04H,46H,48H,28H,40H,28H,40H,10H,40H,28H,40H,24H,0A0H,44H,0A0H,81H,10H,01H,08H,02H,0EH,0CH,04H;迎DB 00H,00H,41H,84H,26H,7EH,14H,44H,04H,44H,04H,44H,0F4H,

10、44H,14H,0C4H,15H,44H,16H,54H,14H,48H,10H,40H,10H,40H,28H,46H,47H,0FCH,00H,00H;选DB 00H,40H,42H,40H,32H,48H,13H,0FCH,02H,40H,04H,44H,0F7H,0FEH,10H,0A0H,10H,0A0H,10H,0A0H,11H,22H,11H,22H,12H,1EH,2CH,00H,44H,06H,03H,0FCH;用DB 00H,08H,3FH,0FCH,21H,08H,21H,08H,21H,08H,3FH,0F8H,21H,08H,21H,08H,21H,08H,3FH,0

11、F8H,21H,08H,21H,08H,21H,08H,41H,08H,41H,28H,80H,10H;启DB 01H,00H,00H,84H,1FH,0FEH,10H,04H,10H,04H,10H,04H,1FH,0FCH,10H,00H,10H,04H,1FH,0FEH,18H,04H,28H,04H,28H,04H,48H,04H,8FH,0FCH,08H,04H;东DB 02H,00H,02H,00H,02H,04H,0FFH,0FEH,04H,00H,09H,00H,09H,00H,11H,10H,3FH,0F8H,01H,00H,09H,40H,09H,20H,11H,10H,2

12、1H,18H,45H,08H,02H,00H;达DB 00H,80H,40H,80H,20H,80H,20H,80H,00H,88H,0FH,0FCH,0E0H,80H,21H,00H,21H,40H,22H,20H,22H,10H,24H,18H,28H,08H,50H,06H,8FH,0FCH,00H,00H;爱DB 00H,78H,3FH,80H,11H,10H,09H,20H,7FH,0FEH,42H,02H,82H,04H,7FH,0F8H,04H,00H,07H,0F0H,0AH,20H,09H,40H,10H,80H,11H,60H,22H,1CH,0CH,08H;思DB 00H

13、,08H,3FH,0FCH,21H,08H,21H,08H,21H,08H,3FH,0F8H,21H,08H,21H,08H,21H,08H,3FH,0F8H,20H,08H,02H,00H,51H,88H,50H,96H,90H,12H,0FH,0F0H;计DB 00H,40H,20H,40H,10H,40H,10H,40H,00H,40H,00H,44H,0F7H,0FEH,10H,40H,10H,40H,10H,40H,10H,40H,12H,40H,14H,40H,18H,40H,10H,40H,00H,40H;算DB 20H,80H,3EH,0FCH,49H,20H,9FH,0F0H

14、,10H,10H,1FH,0F0H,10H,10H,1FH,0F0H,10H,10H,1FH,0F0H,08H,24H,0FFH,0FEH,08H,20H,08H,20H,10H,20H,20H,20H;机DB 10H,00H,10H,10H,11H,0F8H,11H,10H,0FDH,10H,11H,10H,31H,10H,39H,10H,55H,10H,51H,10H,91H,10H,11H,10H,11H,12H,12H,12H,14H,0EH,18H,00H;有DB 02H,00H,02H,04H,0FFH,0FEH,04H,00H,04H,10H,0FH,0F8H,08H,10H,1

15、8H,10H,2FH,0F0H,48H,10H,88H,10H,0FH,0F0H,08H,10H,08H,10H,08H,50H,08H,20H;限DB 00H,08H,7DH,0FCH,45H,08H,49H,08H,49H,0F8H,51H,08H,49H,08H,49H,0F8H,45H,04H,45H,88H,45H,50H,69H,20H,51H,10H,41H,4EH,41H,84H,41H,00H;公DB 00H,00H,00H,80H,04H,80H,04H,40H,08H,40H,08H,20H,11H,10H,21H,0EH,0C2H,04H,02H,00H,04H,00H

16、,08H,40H,10H,20H,1FH,0F0H,00H,10H,00H,00H;司DB 00H,08H,3FH,0FCH,00H,08H,00H,48H,0FFH,0E8H,00H,08H,00H,88H,3FH,0C8H,20H,88H,20H,88H,20H,88H,20H,88H,3FH,88H,20H,88H,00H,28H,00H,10H;DB 00H,00H,7FH,0E0H,20H,10H,20H,08H,20H,08H,20H,08H,20H,08H,20H,08H,20H,08H,20H,08H,20H,10H,7FH,0E0H,00H,00H,00H,00H,00H,0

17、0H,00H,00H;DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,0FH,80H,10H,40H,00H,40H,0FH,0C0H,10H,40H,10H,50H,0FH,0A0H,00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,01H,00H,01H,00H,00H,00H,01H,00H,01H,00H,01H,00H,01H,00H,01H,00H,01H,00H,01H,00H,01H,00H,00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,00H,00H,00H,00

18、H,00H,00H,00H,00H,07H,80H,08H,40H,08H,00H,07H,80H,00H,40H,08H,40H,07H,80H,00H,00H,00H,00H,00H,00H,00H,00H;系DB 00H,38H,7FH,0C0H,04H,00H,04H,10H,08H,20H,3FH,0C0H,01H,00H,02H,20H,04H,10H,3FH,0F8H,01H,08H,09H,20H,09H,10H,11H,08H,25H,08H,02H,00H;列DB 01H,04H,7FH,84H,10H,24H,10H,24H,1FH,24H,21H,24H,21H,24H

19、,52H,24H,8AH,24H,04H,24H,04H,24H,08H,24H,10H,04H,20H,04H,40H,14H,00H,08H;产DB 02H,00H,01H,00H,01H,08H,7FH,0FCH,08H,10H,04H,20H,04H,48H,1FH,0FCH,10H,00H,10H,00H,10H,00H,10H,00H,20H,00H,20H,00H,40H,00H,80H,00H;品DB 00H,10H,1FH,0F8H,10H,10H,10H,10H,10H,10H,1FH,0F0H,10H,10H,02H,04H,7FH,0FEH,42H,84H,42H,84

20、H,42H,84H,42H,84H,42H,84H,7EH,0FCH,42H,84H;。DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,18H,00H,24H,00H,24H,00H,18H,00H,00H,00H,00H,00H;=XB13: MOV R0, #7FH CLR AXB16: MOV R0, A DJNZ R0, XB16 MOV 81H, #20H JMP X097;=查找与当前列对应的汉字代码子程序=XB1F: MOV A, 82H ;本次扫描首址与当前列值

21、相加 ADD A, R1 ;低八位相加 MOV 82H, A ;送DPL MOV A, 83H ;高八位相加 ADDC A, R2 ;再加低八位进位位CY MOV 83H, A ;送DPH CLR A MOVC A, A+DPTR ;取汉字代码 RET ; 返回 ;=XB4E: MOV C, 07H MOV ACC.0, C MOV C, 06H MOV ACC.1, C MOV C, 05H MOV ACC.2, C MOV C, 04H MOV ACC.3, C MOV C, 03H MOV ACC.4, C MOV C, 02H MOV ACC.5, C MOV C, 01H MOV ACC.6, C MOV C, 00H MOV ACC.7, C ;= PUSH DPH PUSH DPL MOV DPTR,#0FFE3H MOVX DPTR,A POP DPL POP DPH RET;- END