微型打印机控制电路的设计(2)

简介: 微型打印机控制电路的设计(2)

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4.6电源模块设计

4.6.1单元电源电路设计

为了能够让单片机和打印机更好,更稳定地工作,采用了图4-12所示单元电源电路,由电源变压器、桥堆和滤波电容器所组成。电源变压器的初级电压输入为220V,次级输出电压为12V[15] [16]

由于单片机所需的是+5V电源,经滤波电容和三端稳压集成电路MC7812后可得到+12V电压,MC7812能将15V~25V的直流电压变换成12V的稳定电压,在12V的电压中含有少量的低频成分和接收外界的高频成分,再经后一级滤波后送三端稳压集成

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4-12 电源电路图

电路LM317,LM317能将大于7V~15V的直流电压变换成+5V的稳定电压并且提供的较大电流以保证打印机正常工作。同时由于电流较大导致三端稳压集成电路MC7812和LM317过热,为了确保电路工作正常,给两个芯片分别加上散热片。

4.6.2直流稳压电源的检测

本系统对电源要求高,因为稳定性和可靠性在单片机的应用中具有格外重要的意义。为了提高稳定性,单片机的允许电压变化范围很宽。通常单片机使用5V电压,所以采用较为复杂的稳压电源,电源电路的主要部件采用集成的三端稳压器件如LM317与MC7812,稳压电源输入电压范围宽,输出电压稳定,电流较大,抗干扰能力强,以满足主控系统和微型打印机的要求[17]

数字万用表对稳压电源的测试结果,如表4-14所示:


输入级(原)

MC7812输出

输出级

+5V直流稳压电源

220V交流电压

11.998 V

4.997V

4-14 电压测试  

5 软件部分


根据程序设计步骤流程图(图5-1),准备本次设计所需要的整体流程图和部分流程图。

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5.1 程序设计整体流程图

通过对本设计的了解,可以知道软件的主要作用是通过单片机来控制打印机、键盘、液晶显示器三个外接设备。当数据选通信号正面.png为上升沿时,单片机上的8位并行数据写入到打印机内锁存;忙判断信号BUSY为高电平时,此时,单片机不能向打印机发送数据。当打印机忙时,调用显示,使液晶显示屏显示当前打印的信息,并可通过按键来改变打印数值。

首先,进行整个程序的初始化及清屏。当有按键按下时,程序判断是哪个键被按下,然后执行相应的按键功能,并调用液晶显示器,显示所打印的内容;当没有键按下时,返回键盘扫描,再判断是否有键被按下。

本次程序设计的整体流程图,如图5-2所示:

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5.2 键处理的流程图

键盘部分应实现如下功能:首先,对键盘进行扫描,判断是否有键被按下。如果没有,则转回键盘扫描,看下次是否有键被按下;如果有键被按下,则先对键进行去抖动,然后算出是哪个键被按下,再延时等待键释放。因为每一个键都对应一个处理子程序,得到闭合键的键码后,就可以根据键码,转相应的键处理子程序(分支是使用JMP等散转指令实现的),进行字符、数据的输入或命令的处理。这样就可以实现该键所设定的功能。

根据上述说明,画出本次程序设计的键处理流程图,如图5-3所示:

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6 显示与测试结果

整个电路接通后,当键盘中打印按键按下时,微型打印机开始工作,打印所设定的汉字,同时在液晶显示屏上显示所打印的内容;当打印完毕后,显示屏上显示打印完毕。当按下第十五键时,显示屏清屏并显示汉字和“请输入:”,微型打印机等待打印。当按下数字键中任何一个时,显示屏上显示相应数字同时微型打印机打印该数字。                      

具体打印显示结果如下图6-1所示:

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7 结 论

此设计体现了由单片机控制的微型打印机的众多优点:多功能超小体积,可电池供电,设计紧凑,方便操作,可打印的内容及其形式具有多样性,节约资源(低耗材,耐用性强,打印精度高,且保证打印噪音低。在本次设计中,实现了利用微型打印机打印出一段固定的文字,并可以任意打印出0~9十个阿拉伯数字,同时在液晶显示器上显示所打印的内容;在不超过单片机内存的情况下,根据改编程序重新设定一些字符或者表格等,就可以将所设定的内容打印且显示出来。

在设计制作微型打印机控制电路的过程当中,遇到了不少问题。例如,在打印过程中,会出现只打印出字的一半的情况,即字的上半部分不对应该字的下半部分,原因是代码顺序调反;还有一种情况就是打印乱码,原因是打印机对单片机造成干扰。而设计制作直流稳压电源时,发现应用三端集成稳压电路MC7805输出的电压虽然可以达到5V,但是提供的电流较小,使微型打印机无法正常工作。把MC7805换成大电流稳压器件LM317,可得到较大的电流。由于带负载较重导致稳压器件本身过热,因此在稳压器件上加了散热片,防止器件过热烧坏。本设计由于水平有限,电路及程序设计还有需要改进的地方,在今后的学习和研究中,将继续改进完善。

另外在调试过程中,以保证作品实现功能准确为前提,尽量做到电路简单、美观,效果好成本低,以增强其实用价值。

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         COM      EQU     34H  ;指令寄存器
        DAT      EQU     35H  ;数据寄存器
        CWADD1   EQU     8400H   ;写指令代码地址(左)
        CRADD1   EQU     8600H   ;读状态字地址(左)
        DWADD1   EQU     8500H   ;写显示数据地址(左)
        DRADD1   EQU     8700H   ;读显示数据地址(左)
        CWADD2   EQU     8800H   ;写指令代码地址(右)
        CRADD2   EQU     8A00H   ;读状态字地址(右)
        DWADD2   EQU     8900H   ;写显示数据地址(右)
        DRADD2   EQU     8B00H   ;读显示数据地址(右)
        RELIE     EQU       36H     ;在汉字中保存列其始值
        COLUMN    EQU       30H     ;列地址寄存器(0-127)
        PAGER     EQU       31H     ;页地址寄存器D2,D1,D0:页地址
                                    ;D7:字符体D7=0为6X8点阵
                                    ;         D7=1为8X8点阵
        CODER     EQU       32H     ;字符代码寄存器
        COUNT     EQU       33H     ;计数器
        ZIDI      EQU       37H     ;字体在表中的位置指针地位
                                    ;MOV DPTR,#CCTAB
                                    ; MOV ZIDI,DPL   MOV ZIGAO,DPH
        ZIGAO     EQU       38H     ;字体在表中的位置指针高位
        DONGXH    EQU       39H     ;此为动态显示的位数
        BAOHUDI   EQU       3AH
        BAOHUGAO  EQU       3BH     ;3CH,3DH,3EH,3FH作键盘用
        ADREL1 EQU 42H
        ADREL2 EQU 43H
;*******************************************************************
        ORG 0000H
        AJMP MAIN
        ORG 0030H
;数据接P0口
MAIN:   MOV SP,#70H
        MOV 40H,#00H
        MOV 41H,#40H
        MOV R4,#0AH
        MOV R0,#50H
CLEARA: MOV @R0,#00H
        INC R0
        DJNZ R4,CLEARA
        LCALL   INT
        LCALL   CLEAR
        LCALL   DDD               ;静态字显示
L1:     MOV 3CH,#0F7H             ;开始键扫描
        MOV 3DH,#00H
L2:     MOV A,3CH
        MOV P1,A
        MOV A,P1
        MOV 3EH,A
        SETB C
        MOV 3FH,#04H
L3:     RLC A
        JNC KEYIN
        INC 3DH
        DJNZ 3FH,L3
       ;LCALL DISP1
        MOV A,3CH
        SETB C
        RRC A
        MOV 3CH,A
        JC L2
        AJMP L1
KEYIN:  MOV R7,#60
D2:     MOV R6,#248
        DJNZ R6,$
        DJNZ R7,D2
D3:     MOV A,P1
        XRL A,3EH
        JZ D3
        CLR C
        MOV A,3DH
        RLC A
        MOV DPTR,#TABLE
        JMP @A+DPTR
MNMN:   AJMP L1
TABLE:  AJMP MN0            ;键盘入口地址
        AJMP MN1
        AJMP MN2
        AJMP MN3
        AJMP MN4
        AJMP MN5 
        AJMP MN6
        AJMP MN7
        AJMP MN8
        AJMP MN9
        AJMP MN13
        AJMP MN14
        AJMP MN15           ;键盘入口地址
MN0:    MOV A,40H
        JNZ FANMN0
        AJMP MN0_0
FANMN0: AJMP MNMN
MN0_0:  MOV A,41H
        SUBB A,#80H
        JC JX0
        AJMP FANMN0
        AJMP MNMN
MN10:   AJMP MNMN
MN11:   AJMP MNMN
MN12:   AJMP MNMN
MN13:   AJMP MNMN
MN15:;
        MOV ADREL1,#00H
        MOV ADREL2,#0BCH
        SETB P3.2
LP1_1:  JB P3.2,LP1_1
        MOV R4,ADREL1
LP2_1:  MOV A,R4
        MOV DPTR,#PRNTAB1_1
        MOVC A,@A+DPTR
        MOV DPTR,#0000H
        MOVX @DPTR,A
LP3_1:  JB P3.2,LP3_1
        INC R4
        MOV A,R4
        XRL A, ADREL2
        JNZ LP2_1
        MOV ADREL1,#00H
        MOV ADREL2,#0BCH
        SETB P3.2
LP1_2:  JB P3.2,LP1_2
        MOV R4,ADREL1
LP2_2:  MOV A,R4
        MOV DPTR,#PRNTAB1_2
        MOVC A,@A+DPTR
        MOV DPTR,#0000H
        MOVX @DPTR,A
LP3_2:  JB P3.2,LP3_2
        INC R4
        MOV A,R4
        XRL A, ADREL2
        JNZ LP2_2
        MOV     DPTR,#CCTAB4
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#06H
        MOV     COLUMN,#00H           ;打
        MOV     CODER,#00H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB4
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#06H
        MOV     COLUMN,#10H           ;印
        MOV     CODER,#01H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB4
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#06H
        MOV     COLUMN,#20H           ;完
        MOV     CODER,#02H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB4
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#06H
        MOV     COLUMN,#30H           ;毕
        MOV     CODER,#03H
        LCALL   CCW_PR
        AJMP MNMN
;以下字不动
DDD:
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#00H           ;天
        MOV     CODER,#00H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#10H           ;津
        MOV     CODER,#01H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#20H           ;工
        MOV     CODER,#02H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#30H           ;程
        MOV     CODER,#03H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#40H           ;师
        MOV     CODER,#04H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#50H           ;范
        MOV     CODER,#05H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#60H           ;学
        MOV     CODER,#06H
        LCALL   CCW_PR
        MOV     DPTR,#CCTAB1
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#00H
        MOV     COLUMN,#70H           ;院
        MOV     CODER,#07H
        LCALL   CCW_PR
        RET
  ;中文演示程序段
        MOV     DPTR,#CTAB
        MOV     ZIDI,DPL
        MOV     ZIGAO,DPH
        MOV     PAGER,#84H          ;   :
        MOV     COLUMN,#20H
        MOV     CODER,#1AH
        LCALL   CW_PR
        RET
;初始化子程序
INT:    MOV     COM,#0C0H           ;设置显示起始行为第一行
        LCALL   PRL0
        LCALL   PRR0
        MOV     COM,#3FH            ;开显示设置
        LCALL   PRL0
        LCALL   PRR0
        RET
;清显示RAM区(清屏)子程序
CLEAR:  MOV     R2,#00H             ;页面地址暂存器设置
CLEAR1: MOV     A,R2
        ORL     A,#0B8H             ;"或"页面地址设置代码
        MOV     COM,A               ;页面地址设置
        LCALL   PRL0
        LCALL   PRR0
        MOV     COM,#40H            ;列地址设置为"0"
        LCALL   PRL0
        LCALL   PRR0
        MOV     R3,#40H             ;一页清64个字节
CLEAR2: MOV     DAT,#00H            ;显示数据为"0"
        LCALL   PRL1
        LCALL   PRR1
        DJNZ    R3,CLEAR2           ;页内字节清零循环
        INC     R2                  ;页地址暂存器加1
        CJNE    R2,#08H,CLEAR1      ;RAM区清零循环,共八页
        RET                         ;写指令代码子程序(左)
PRL0:   PUSH     DPL             ;片选设置为"00"
        PUSH     DPH
        MOV      DPTR,#CRADD1    ;设置读状态字地址
PRL01:  MOVX     A,@DPTR           ;读状态字
        JB       ACC.7,PRL01     ;判"忙"标志为"0"否,否在读
        MOV      DPTR,#CWADD1     ;设置写指令代码地址
        MOV      A,COM            ;取指令代码
        MOVX     @DPTR,A          ;写指令代码
        POP      DPH
        POP      DPL
        RET                        ;写显示数据子程序(左)
PRL1:   PUSH     DPL               ;片选设置为"00"
        PUSH     DPH
        MOV      DPTR,#CRADD1      ;设置读状态字地址
PRL11:  MOVX     A,@DPTR           ;读状态字
        JB       ACC.7,PRL11       ;判"忙"标志为"0"否,否在读
        MOV      DPTR,#DWADD1       ;设置写显示数据地址
        MOV      A,DAT              ;取数据
        MOVX     @DPTR,A            ;写数据
        POP      DPH
        POP      DPL
        RET
;读显示数据子程序(左)
PRL2:   PUSH     DPL                ;片选设置为"00"
        PUSH     DPH
         MOV      DPTR,#CRADD1      ;设置读状态字地址
PRL21:   MOVX     A,@DPTR            ;读状态字
         JB       ACC.7,PRL21       ;判"忙"标志为"0"否,否在读
         MOV      DPTR,#DRADD1       ;设置读显示数据地址
         MOVX     A,@DPTR            ;读数据
         MOV      DAT,A                      ;存数据
         POP      DPH
         POP      DPL
         RET
;写指令代码子程序(右)
PRR0:    PUSH     DPL                ;片选设置为"10"
         PUSH     DPH
         MOV      DPTR,#CRADD2      ;设置读状态字地址
PRR01:   MOVX     A,@DPTR            ;读状态字
         JB       ACC.7,PRR01       ;判"忙"标志为"0"否,否在读
         MOV      DPTR,#CWADD2       ;设置写指令代码地址
         MOV      A,COM              ;取指令代码
         MOVX     @DPTR,A            ;写指令代码
         POP      DPH
         POP      DPL
         RET
;写显示数据子程序(右)
PRR1:    PUSH     DPL               ;片选设置为"10"
         PUSH     DPH
         MOV      DPTR,#CRADD2     ;设置读状态字地址
PRR11:   MOVX     A,@DPTR           ;读状态字
         JB       ACC.7,PRR11      ;判"忙"标志为"0"否,否在读
         MOV      DPTR,#DWADD2      ;设置写显示数据地址
         MOV      A,DAT             ;取数据
         MOVX     @DPTR,A           ;写数据
         POP      DPH
         POP      DPL
         RET
;读显示数据子程序(右)
PRR2:    PUSH     DPL                ;片选设置为"10"
         PUSH     DPH
         MOV      DPTR,#CRADD2      ;设置读状态字地址
PRR21:   MOVX     A,@DPTR            ;读状态字
         JB       ACC.7,PRR21       ;判"忙"标志为"0"否,否在读
         MOV      DPTR,#DRADD2       ;设置读显示数据地址
         MOVX     A,@DPTR            ;读数据
         MOV      DAT,A               ;存数据
         POP      DPH
         POP      DPL
         RET
;8*8
CW_PR:  CLR EA
        MOV     DPL,ZIDI           ;确定字符字模块首地址
        MOV     DPH,ZIGAO
        MOV     A,CODER             ;取代码
        MOV     B,#08H              ;字模块宽度为8个字节
        MUL     AB                  ;代码X8
        ADD     A,DPL               ;字符字模块首地址
        MOV     DPL,A               ;=字模库首地址+代码X8
        MOV     A,B
        ADDC    A,DPH
        MOV     DPH,A
        MOV     CODER,#00H          ;借用为间址寄存器
        MOV     A,PAGER             ;读页地址寄存器
        JB      ACC.7,CW_1          ;判字符体
        MOV     COUNT,#06H          ;6X8点阵
        LJMP    CW_2
CW_1:   MOV     COUNT,#08H          ;8X8点阵
CW_2:   ANL     A,#07H              ;取页地址值
        ORL     A,#0B8H             ;"或"页地址指令代码
        MOV     COM,A               ;写页地址指针
        LCALL   PRL0
        LCALL   PRR0
        MOV     A,COLUMN            ;读列地址寄存器
        CLR     C
        ANL     A,#7FH              ;为了滚屏,变成列地址为1-128
        SUBB    A,#40H              ;列地址-64
        JC      CW_21               ;<0为左屏显示区域
        MOV     COLUMN ,A           ;≥0为右屏显示区域
        MOV     A,PAGER
        SETB    ACC.4               ;设置区域标志位
        MOV     PAGER,A             ;"01"为右,"10"为左
        LJMP    CW_3
CW_21:  MOV     A,PAGER
        SETB    ACC.5               ;设置区域标志位
        MOV     PAGER,A
CW_3:   MOV     COM,COLUMN          ;设置列地址值                  如果超过80H,得减80H,为滚屏
        ORL     COM,#40H            ;"或"列地址指令标志位
        MOV     A,PAGER             ;判区域标志以确定设置哪个控制器
        ANL     A,#30H
        CJNE    A,#10H,CW_31
        LCALL   PRR0                ;"01"为右区
        LJMP    CW_4
CW_31:  LCALL   PRL0                ;"10"为左区
CW_4:   MOV     A,CODER             ;取间址寄存器值
        MOVC    A,@A+DPTR           ;取字符字模数据
        MOV     DAT,A               ;写数据
        MOV     A,PAGER             ;判区域标志
        ANL     A,#30H
        CJNE    A,#10H,CW_41
        LCALL   PRR1                ;"01"为右区
        LJMP    CW_5
CW_41:  LCALL   PRL1                ;"10"为左区
CW_5:   INC     CODER               ;间址加1
        INC     COLUMN              ;列地址加1
        MOV     A,COLUMN            ;判列地址是否超出区域范围
        CLR     C
        CJNE    A,#40H,CW_6
CW_6:   JC      CW_9                ;未超出则继续
        MOV     COLUMN,#00H
        MOV     A,PAGER             ;超出则判在何区域
        ANL     A,#30H
        CJNE    A,#10H,CW_62
        MOV     A,PAGER
CW_61:  SETB    ACC.4               ;在左区则转右区
        CLR     ACC.5
        MOV     PAGER,A
        MOV     COM,#40H            ;设置右区列地址为"0"
        LCALL   PRR0
        AJMP    CW_9
CW_62:   MOV     A,PAGER
        CLR     ACC.4               ;在右区则转左区
        SETB    ACC.5
        MOV     PAGER,A
        MOV     COM,#40H            ;设置左区列地址为"0"
        LCALL   PRL0
CW_9:   DJNZ    COUNT,CW_4          ;循环
        SETB EA
        RET
;************************************************************************
;16*16
CCW_PR: CLR EA
        MOV     DPL,ZIDI           ;确定字符字模块首地址
        MOV     DPH,ZIGAO
        MOV     A,CODER             ;取代码
        MOV     B,#20H              ;字模块宽度为32个字节
        MUL     AB                  ;代码X32
        ADD     A,DPL               ;字符字模块首地址
        MOV     DPL,A               ;=字模库首地址+代码X32
        MOV     A,B
        ADDC    A,DPH
        MOV     DPH,A
        MOV     RELIE,COLUMN        ;保存列地址起始值
        MOV     CODER,#00H          ;借用为间址寄存器
        MOV     A,PAGER             ;读页地址寄存器
CCW_1:  MOV     COUNT,#10H          ;计数器设置为16
CCW_2:  ANL     A,#07H              ;取页地址值
        ORL     A,#0B8H             ;"或"页地址指令代码
        MOV     COM,A               ;写页地址指针
        LCALL   PRL0
        LCALL   PRR0
        MOV     COLUMN,RELIE        ;取列地址值
        MOV     A,COLUMN            ;读列地址寄存器
        CLR     C
        ANL     A,#7FH              ;为了滚屏,变成列地址为1-128
        SUBB    A,#40H              ;列地址-64
        JC      CCW_21              ;<0为左屏显示区域
        MOV     COLUMN ,A           ;≥0为右屏显示区域
        MOV     A,PAGER
        SETB    ACC.4               ;设置区域标志位
        MOV     PAGER,A             ;"01"为右,"10"为左
        LJMP    CCW_3
CCW_21: MOV     A,PAGER
        SETB    ACC.5               ;设置区域标志位
        MOV     PAGER,A
CCW_3:  MOV COM,COLUMN          ;设置列地址值  如果超过80H,得减80H,为滚屏
        ORL     COM,#40H            ;"或"列地址指令标志位
        MOV     A,PAGER             ;判区域标志以确定设置哪个控制器
        ANL     A,#30H
        CJNE    A,#10H,CCW_31
        LCALL   PRR0                ;"01"为右区
        LJMP    CCW_4
CCW_31: LCALL   PRL0                ;"10"为左区
CCW_4:  MOV     A,CODER             ;取间址寄存器值
        MOVC    A,@A+DPTR           ;取字符字模数据
        MOV     DAT,A               ;写数据
        MOV     A,PAGER             ;判区域标志 
        ANL     A,#30H
        CJNE    A,#10H,CCW_41
        LCALL   PRR1                ;"01"为右区
        LJMP    CCW_5
CCW_41: LCALL   PRL1                ;"10"为左区
CCW_5:  INC     CODER               ;间址加1
        INC     COLUMN              ;列地址加1
        MOV     A,COLUMN            ;判列地址是否超出区域范围
        CLR     C
        CJNE    A,#40H,CCW_6
CCW_6:  JC      CCW_9               ;未超出则继续
        MOV     COLUMN,#00H
        MOV     A,PAGER             ;超出则判在何区域
        ANL     A,#30H
        CJNE    A,#10H,CCW_62
        MOV     A,PAGER
CCW_61: SETB    ACC.4               ;在左区则转右区
        CLR     ACC.5
        MOV     PAGER,A
        MOV     COM,#40H            ;设置右区列地址为"0"
        LCALL   PRR0
        LJMP    CCW_9
CCW_62: MOV     A,PAGER
        CLR     ACC.4               ;在右区则转左区
        SETB    ACC.5
        MOV     PAGER,A
        MOV     COM,#40H            ;设置左区列地址为"0"
        LCALL   PRL0
CCW_9:  DJNZ    COUNT,CCW_4         ;当页循环
        MOV     A,PAGER             ;读页地址寄存器
        JB      ACC.7,CCW_10        ;判完成标志D7位,"1"则完成退出
        INC     A                   ;否则页地址加1
        SETB    ACC.7               ;置完成位为"1"
        ANL     A,#0CFH             ;清区域标志
        MOV     PAGER,A
        MOV     CODER,#10H          ;间址寄存器设置为16
        LJMP   CCW_1                ;大循环
CCW_10: SETB EA
       RET
;西文字符库
CTAB:   DB 000H,000H,000H,000H,000H,000H,000H,000H   ;""=00H
        DB 000H,000H,000H,04FH,000H,000H,000H,000H   ;"!"=01H
        DB 000H,000H,007H,000H,007H,000H,000H,000H   ;"""=02H
        DB 000H,014H,07FH,014H,07FH,014H,000H,000H   ;"#"=03H
        DB 000H,024H,02AH,07FH,02AH,012H,000H,000H   ;"$"=04H
        DB 000H,023H,013H,008H,064H,062H,000H,000H   ;"%"=05H
        DB 000H,036H,049H,055H,022H,050H,000H,000H   ;"&"=06H
        DB 000H,000H,005H,003H,000H,000H,000H,000H   ;"1"=07H
        DB 000H,000H,01CH,022H,041H,000H,000H,000H   ;"("=08H
        DB 000H,000H,041H,022H,01CH,000H,000H,000H   ;")"=09H
        DB 000H,014H,008H,03EH,008H,014H,000H,000H   ;"*"=0AH
        DB 000H,008H,008H,03EH,008H,008H,000H,000H   ;"+"=0BH
        DB 000H,000H,050H,030H,000H,000H,000H,000H   ;";"=0CH
        DB 000H,008H,008H,008H,008H,000H,000H,000H   ;"-"=0DH
        DB 000H,000H,060H,060H,000H,000H,000H,000H   ;"."=0EH
        DB 000H,020H,010H,008H,004H,002H,000H,000H   ;"/"=0FH
        DB 000H,03EH,051H,049H,045H,03EH,000H,000H   ;"0"=10H
        DB 000H,000H,042H,07FH,040H,000H,000H,000H   ;"1"=11H
        DB 000H,042H,061H,051H,049H,046H,000H,000H   ;"2"=12H
        DB 000H,021H,041H,045H,04BH,031H,000H,000H   ;"3"=13H
        DB 000H,018H,014H,012H,07FH,010H,000H,000H   ;"4"=14H
        DB 000H,027H,045H,045H,045H,039H,000H,000H   ;"5"=15H
        DB 000H,03CH,04AH,049H,049H,030H,000H,000H   ;"6"=16H
        DB 000H,001H,001H,079H,005H,003H,000H,000H   ;"7"=17H
        DB 000H,036H,049H,049H,049H,036H,000H,000H   ;"8"=18H
        DB 000H,006H,049H,049H,029H,01EH,000H,000H   ;"9"=19H
        DB 000H,000H,036H,036H,000H,000H,000H,000H   ;":"=1AH
        DB 000H,000H,056H,036H,000H,000H,000H,000H   ;";"=1BH
        DB 000H,008H,014H,022H,041H,000H,000H,000H   ;"<"=1CH
        DB 000H,014H,014H,014H,014H,014H,000H,000H   ;"="=1DH
        DB 000H,000H,041H,022H,014H,008H,000H,000H   ;">"=1EH
        DB 000H,002H,001H,051H,009H,006H,000H,000H   ;"?"=1FH
        DB 000H,032H,049H,079H,041H,03EH,000H,000H   ;"@"=20H
        DB 000H,07EH,011H,011H,011H,07EH,000H,000H   ;"A"=21H
        DB 000H,041H,07FH,049H,049H,036H,000H,000H   ;"B"=22H
        DB 000H,03EH,041H,041H,041H,022H,000H,000H   ;"C"=23H
        DB 000H,041H,07FH,041H,022H,01CH,000H,000H   ;"D"=24H
        DB 000H,07FH,049H,049H,049H,049H,000H,000H   ;"E"=25H
        DB 000H,07FH,009H,009H,009H,001H,000H,000H   ;"F"=26H
        DB 000H,03EH,041H,041H,049H,07AH,000H,000H   ;"G"=27H
        DB 000H,07FH,008H,008H,008H,07FH,000H,000H   ;"H"=28H
        DB 000H,000H,041H,07FH,041H,000H,000H,000H   ;"I"=29H
        DB 000H,020H,040H,041H,03FH,001H,000H,000H   ;"J"=2AH
        DB 000H,07FH,008H,014H,022H,041H,000H,000H   ;"K"=2BH
        DB 000H,07FH,040H,040H,040H,040H,000H,000H   ;"L"=2CH
        DB 000H,07FH,002H,00CH,002H,07FH,000H,000H   ;"M"=2DH
        DB 000H,07FH,006H,008H,030H,07FH,000H,000H   ;"N"=2EH
        DB 000H,03EH,041H,041H,041H,03EH,000H,000H   ;"O"=2FH
        DB 000H,07FH,009H,009H,009H,006H,000H,000H   ;"P"=30H
        DB 000H,03EH,041H,051H,021H,05EH,000H,000H   ;"Q"=31H
        DB 000H,07FH,009H,019H,029H,046H,000H,000H   ;"R"=32H
        DB 000H,026H,049H,049H,049H,032H,000H,000H   ;"S"=33H
        DB 000H,001H,001H,07FH,001H,001H,000H,000H   ;"T"=34H
        DB 000H,03FH,040H,040H,040H,03FH,000H,000H   ;"U"=35H
        DB 000H,01FH,020H,040H,020H,01FH,000H,000H   ;"V"36H
        DB 000H,07FH,020H,018H,020H,07FH,000H,000H   ;"W"=37H
        DB 000H,063H,014H,008H,014H,063H,000H,000H   ;"X"=38H
        DB 000H,007H,008H,070H,008H,007H,000H,000H   ;"Y"=39H
        DB 000H,061H,051H,049H,045H,043H,000H,000H   ;"Z"=3AH
         DB 000H,000H,000H,000H,000H,000H,000H,000H   ;""=00H  ;3B
        DB 000H,002H,004H,008H,010H,020H,000H,000H   ;"\"=3CH
        DB 000H,000H,041H,041H,07FH,000H,000H,000H   ;"]"=3DH
        DB 000H,004H,002H,001H,002H,004H,000H,000H   ;"?"=3EH
        DB 000H,040H,040H,000H,040H,040H,000H,000H   ;"-"=3FH
        DB 000H,001H,002H,004H,000H,000H,000H,000H   ;"1"=40H
        DB 000H,020H,054H,054H,054H,078H,000H,000H   ;"a"=41H
        DB 000H,07FH,048H,044H,044H,038H,000H,000H   ;"b"=42H
        DB 000H,038H,044H,044H,044H,028H,000H,000H   ;"c"=43H
        DB 000H,038H,044H,044H,048H,07FH,000H,000H   ;"d"=44H
        DB 000H,038H,054H,054H,054H,018H,000H,000H   ;"e"=45H
        DB 000H,000H,008H,07EH,009H,002H,000H,000H   ;"f"=46H
        DB 000H,00CH,052H,052H,04CH,03EH,000H,000H   ;"g"=47H
        DB 000H,07FH,008H,004H,004H,078H,000H,000H   ;"h"=48H
        DB 000H,000H,044H,07DH,040H,000H,000H,000H   ;"i"=49H
        DB 000H,020H,040H,044H,03DH,000H,000H,000H   ;"j"=4AH
        DB 000H,000H,07FH,010H,028H,044H,000H,000H   ;"k"=4BH
        DB 000H,000H,041H,07FH,040H,000H,000H,000H   ;"l"=4CH
        DB 000H,07CH,004H,078H,004H,078H,000H,000H   ;"m"=4DH
        DB 000H,07CH,008H,004H,004H,078H,000H,000H   ;"n"=4EH
        DB 000H,038H,044H,044H,044H,038H,000H,000H   ;"o"=4FH
        DB 000H,07EH,00CH,012H,012H,00CH,000H,000H   ;"p"=50H
        DB 000H,00CH,012H,012H,00CH,07EH,000H,000H   ;"q"=51H
        DB 000H,07CH,008H,004H,004H,008H,000H,000H   ;"r"=52H
        DB 000H,058H,054H,054H,054H,064H,000H,000H   ;"s"=53H
        DB 000H,004H,03FH,044H,040H,020H,000H,000H   ;"t"=54H
        DB 000H,03CH,040H,040H,03CH,040H,000H,000H   ;"u"=55H
        DB 000H,01CH,020H,040H,020H,01CH,000H,000H   ;"v"=56H
        DB 000H,03CH,040H,030H,040H,03CH,000H,000H   ;"w"=57H
        DB 000H,044H,028H,010H,028H,044H,000H,000H   ;"s"=58H
        DB 000H,01CH,0A0H,0A0H,090H,07CH,000H,000H   ;"y"=59H
        DB 000H,044H,064H,054H,04CH,044H,000H,000H   ;"z"=5AH
        DB 000H,000H,008H,036H,041H,000H,000H,000H   ;"{"=5BH
        DB 000H,000H,000H,077H,000H,000H,000H,000H   ;"|"=5CH
        DB 000H,000H,041H,036H,008H,000H,000H,000H   ;"}"=5DH
        DB 000H,002H,001H,002H,004H,002H,000H,000H   ;"-"=5FH
        DB 000H,0FFH,0FFH,0FFH,0FFH,0FFH,000H,000H   ;"  "=60H
;汉字库
CCTAB1:
;天[12*12]下半列排
DB   00h,  00h,  40h,  48h,  48h,  48h,  48h, 0F8h
DB   48h,  48h,  48h,  4Ch,  48h,  40h,  00h,  00h
DB   00h,  00h,  20h,  20h,  10h,  08h,  04h,  03h
DB   02h,  04h,  08h,  10h,  30h,  10h,  00h,  00h
;津[12*12]下半列排
DB   00h,  00h,  20h,  44h,  08h,  20h, 0A8h, 0A8h
DB  0A8h, 0FCh, 0A8h, 0F8h,  20h,  20h,  00h,  00h
DB   00h,  00h,  04h,  3Ch,  03h,  08h,  0Ah,  0Ah
DB   0Ah,  3Fh,  0Ah,  0Ah,  0Ah,  08h,  00h,  00h
;工[12*12]下半列排
DB   00h,  00h,  00h,  08h,  08h,  08h,  08h, 0F8h
DB   08h,  08h,  08h,  0Ch,  08h,  00h,  00h,  00h
DB   00h,  00h,  10h,  10h,  10h,  10h,  10h,  1Fh
DB   10h,  10h,  10h,  10h,  18h,  10h,  00h,  00h
;程[12*12]下半列排
DB   00h,  00h,  28h, 0A8h, 0F8h,  24h,  24h,  80h
DB  0BCh, 0A4h, 0A4h, 0A4h, 0BCh,  80h,  00h,  00h
DB   00h,  00h,  06h,  01h,  3Fh,  01h,  22h,  20h
DB   24h,  24h,  3Fh,  24h,  34h,  20h,  00h,  00h
;师[12*12]下半列排
DB   00h,  00h,  00h, 0F0h,  00h, 0FCh,  00h, 0E8h
DB   28h,  28h, 0F8h,  28h,  2Ch, 0E8h,  00h,  00h
DB   00h,  00h,  00h,  27h,  10h,  0Fh,  00h,  0Fh
DB   00h,  00h,  3Fh,  00h,  08h,  0Fh,  00h,  00h
;范[12*12]下半列排
DB   00h,  00h,  88h,  28h,  48h,  08h,  1Ch, 0C8h
DB   48h,  5Ch,  48h, 0E8h,  4Ch,  08h,  00h,  00h
DB   00h,  00h,  04h,  05h,  3Eh,  01h,  00h,  1Fh
DB   20h,  22h,  24h,  23h,  20h,  38h,  00h,  00h
;学[12*12]下半列排
DB   00h,  00h,  80h,  60h, 0A4h, 0B8h, 0A0h, 0A4h
DB  0B8h, 0A0h, 0B0h,  2Ch,  60h,  20h,  00h,  00h
DB   00h,  00h,  04h,  04h,  04h,  04h,  14h,  26h
DB   3Eh,  05h,  04h,  04h,  06h,  04h,  00h,  00h
;院[12*12]下半列排
DB   00h,  00h, 0F8h,  08h,  68h,  98h,  20h,  50h
DB   50h,  54h,  58h,  50h,  50h,  30h,  00h,  00h
DB   00h,  00h,  3Fh,  04h,  08h,  27h,  21h,  11h
DB   0Fh,  01h,  1Fh,  21h,  21h,  39h,  00h,  00h
PRNTAB1_1:
DB 1BH,57H,00H
DB 1BH,31H,00h;
DB 1BH,4BH,10H,00H;
DB   00h,  00h,  04h,  04h,  08h,  10h,  20h, 0C0h
DB   40h,  20h,  10h,  08h,  0Ch,  08h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  20h,  3Ch, 0C0h,  10h,  50h,  50h
DB   50h, 0FCh,  50h,  50h,  50h,  10h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  08h,  08h,  08h,  08h,  08h, 0F8h
DB   08h,  08h,  08h,  08h,  18h,  08h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  60h,  80h, 0FCh,  80h,  44h,  04h
DB   24h,  24h, 0FCh,  24h,  2Ch,  04h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  00h, 0E4h,  08h, 0F0h,  00h, 0F0h
DB   00h,  00h, 0FCh,  00h,  10h, 0F0h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  20h, 0A0h,  7Ch,  80h,  00h, 0F8h
DB   04h,  44h,  24h, 0C4h,  04h,  1Ch,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  20h,  20h,  20h,  20h,  28h,  64h
DB   7Ch, 0A0h,  20h,  20h,  60h,  20h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h, 0FCh,  20h,  10h, 0E4h,  84h,  88h
DB  0F0h,  80h, 0F8h,  84h,  84h,  9Ch,  00h,  00h
DB   0DH
PRNTAB1_2:
DB 1BH,57H,00H
DB 1BH,31H,00h;
DB 1BH,4BH,10H,00H;
DB   00h,  00h,  02h,  12h,  12h,  12h,  12h,  1Fh
DB   12h,  12h,  12h,  32h,  12h,  02h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  04h,  22h,  10h,  04h,  15h,  15h
DB   15h,  3Fh,  15h,  1Fh,  04h,  04h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  00h,  10h,  10h,  10h,  10h,  1Fh
DB   10h,  10h,  10h,  30h,  10h,  00h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  14h,  15h,  1Fh,  24h,  24h,  01h
DB   3Dh,  25h,  25h,  25h,  3Dh,  01h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  00h,  0Fh,  00h,  3Fh,  00h,  17h
DB   14h,  14h,  1Fh,  14h,  34h,  17h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  11h,  14h,  12h,  10h,  38h,  13h
DB   12h,  3Ah,  12h,  17h,  32h,  10h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  01h,  06h,  25h,  1Dh,  05h,  25h
DB   1Dh,  05h,  0Dh,  34h,  06h,  04h,  00h,  00h
DB   1BH,36H
DB   20H
DB   1BH,4BH,10H,00H
DB   00h,  00h,  1Fh,  10h,  16h,  19h,  04h,  0Ah
DB   0Ah,  2Ah,  1Ah,  0Ah,  0Ah,  0Ch,  00h,  00h
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