数码管显示求助，不显示？？？WHY？？3Q

只看该作者 · 2011-5-29 12:09

ORG 3000H
DISPLAY:
      MOV 30,#01H
      MOV 31,#02H
      MOV 32,#03H
      MOV 33,#04H
      MOV 34,#05H
      MOV 35,#06H
      MOV A,#33H
      MOV DPTR,#0FD00H
      MOVX @DPTR,A
BEGIN: MOV R0,#30H
      MOV R2,#20H
DISPY1:  MOV A,@R0
      MOV DPTR,#SEGTAB
      MOVC A,@A+DPTR
      MOV DPTR,#0FD01H
      MOVX @DPTR,A
      MOV A,R2
      INC DPTR
      MOVX @DPTR,A
      LCALL D1MS
      MOV A,R2
      JNB ACC.0,DISPY2
      LJMP  BEGIN
      ; ret
DISPY2:  INC R0
      MOV A,R2
      RR A
      MOV R2,A
      LJMP DISPY1
D1MS: MOV R3,#04H
DEL1: MOV R4,#125
DEL2:    DJNZ R4,DEL2

      DJNZ R3,DEL1
      RET
SEGTAB: DB 3FH
      DB 06H
      DB 5BH
      DB 4FH
      DB 66H
      DB 6DH
      DB 7DH
      DB 07H
      DB 7FH
      DB 6FH
      DB 77H
      DB 7CH
      DB 39H
      DB 5EH
      DB 79H
      DB 71H
ENDfile:///E:/LED.BMP

只看该作者 · 2011-5-29 12:10

file:///E:/LED.BMP

数码管显示求助，不显示？？？WHY？？3Q

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