Proteus 仿真问题，大侠请进！~~

只看该作者 · 2010-3-31 10:46

本帖最后由 wangerping 于 2010-4-1 14:40 编辑

我的这个程序（是教程上的），用keil编译通过了。但与Proteus联调的时候，却lcd上面没有显示任何东西，为什么啊？是程序错了，还是设置出了问题呢？程序如下，电路在附件，愿大虾们指教哦：
                  RS BIT P2.7
            RW BIT P2.6
            E    BIT P2.5
            DOUT  EQU P3
            ORG 0030H
LOP:                      MOV SP, #5FH
                              ACALL LCD_MODEL
            MOV DOUT,  #81H
            ACALL READY
            MOV DPTR, #TAB
            ACALL WRITE
            MOV P3, #0C1H
            ACALL READY
            MOV DPTR, #TAB1
            ACALL WRITE
            AJMP  $
WRITE:                   CLR A
                              MOVC  A, @A+DPTR
            CJNE  A, #0FFH,s
            AJMP  EXIT
S:                         MOV DOUT, A
                           ACALL WRITE1
                     INC DPTR
                     AJMP  WRITE
EXIT:                      RET
WRITE1:                SETB  RS
                              CLR RW
            CLR E
            ACALL DELAY
            SETB  E
            RET
LCD_MODEL:          MOV DOUT, #01H
                           ACALL  READY
            MOV DOUT,  #03H
            ACALL READY
            MOV DOUT,  #00000110B
            ACALL READY
            MOV DOUT, #00001100B
            ACALL READY
            MOV DOUT,  #38H
            ACALL READY
            RET
READY:                   CLR RS
                              CLR RW
            CLR E
            ACALL DELAY
            SETB  E
            RET
DELAY:                   MOV DOUT,  #0FFH
                              CLR RS
            SETB  RW
            CLR E
            NOP
            SETB  E
            JB DOUT.7, DELAY
            RET
TAB: DB 43H,5AH,50H,4DH,43H,55H
         DB 40H,31H,32H,36H,2EH,63H,6FH,6DH,01H
         DB 0FFH
TAB1:  DB 54H,45H,4CH,30H,31H,32H,33H,34H,35H
         DB 36H,37H,38H,39H,30H,31H
         DB 0FFH
            END