shuzhu.asm

将单片机内存中的3字节的数显示在六个lcd上

        ORG 0                   ;zhongduan  jishu  xianshi  (等同于keshe3)
        AJMP MAIN
        ORG 0003H                ;读取内存中的数据 并显示（成功）
    ;    AJMP INTV1
        ORG 0030H
   MAIN:MOV P1,#02FH
        MOV A,#3FH
        MOV  P2,A
        SETB IT0
        SETB EX0
        SETB EA

        MOV R5,#17H          ;BCD SANWEI
        MOV R4,#23H
        MOV R3,#10H
        MOV R0,#05H          ;ZHI XIANG JI CUN XI R5 R4 R3
        MOV R1,#03H
        MOV R2,#20H         ;CHOOSE THE BIT OF LIGHT

  ; HERE: AJMP HERE
   ;INTV1:
    STB:
         MOV A,@R0
       ;  MOV R6,A
         ANL A,#0FH
         MOV DPTR,#TAB0
         MOVC  A,@A+DPTR
         MOV   P2,A
         MOV  A,R2
         MOV   P1,A
         ACALL DAY

         RR  A
         MOV R2,A
         MOV A,@R0
         SWAP A
         ANL  A,#0FH
         MOVC  A,@A+DPTR
         MOV   P2,A
         MOV  A,R2
         MOV   P1,A
         ACALL DAY

         RR A
         MOV R2,A
         DEC R0
         DJNZ R1,STB
         MOV R0,#05H          ;ZHI XIANG JI CUN XI R5 R4 R3
         MOV R1,#03H
         MOV R2,#20H
         AJMP STB
        ; CJNE  R2,#0,STB
         ;POP DPH
        ; POP DPL
        ; MOV DPTR,#HERE
        ; PUSH DPL
        ; PUSH DPH
       ; ;DEC R0
       ; ;DJNZ R1,STB
        ; RETI
    DAY: MOV R6,#20
    DL2: MOV R7,#7DH
    DL1:
         DJNZ R7,DL1
         DJNZ R6,DL2
         RET
   TAB0:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,77H,7CH,39H,5EH,79H,71H
        END