dayinji.asm

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       ORG      0000H
       AJMP     START1
       ORG      0100H
START1:lcaLL     DELAY
START: CLR      A
       MOV      DPTR,#DATA1
       MOVC     A,@A+DPTR
       INC      DPTR
       MOV      R2,A
LOOP:  CLR      A
       MOVC     A,@A+DPTR
       INC      DPTR
       ACALL    PARRL
       DJNZ     R2,LOOP
       ajmp     start
DATA1: DB       27,1BH,38H,1,'杭','州','天','科',1BH,36H,'M'
       DB       'P','-','A','8',1BH,38H,1,'天','煌','0DH'



PARRL: PUSH     DPL
       PUSH     DPH
       SETB     P3.5
PL1:   SETB     P3.4
       JB       P3.4,PL1
       mov      p1,a
       CLR      P3.5
       SETB     P3.5
       POP      DPH
       POP      DPL
       RET
DELAY: MOV      R7,#0FFH
AA1:   MOV      R6,#0FFH
AA:    NOP
       NOP
       DJNZ     R6,AA
       DJNZ     R7,AA1
       RET
       END