h_9_1.asm

单片机硬件实验代码

         ORG      0000H
         SJMP     START
         ORG      000BH
         SJMP     TIMER0
         
  START: MOV      TMOD,#10H
         MOV      TH1,#3CH
         MOV      TL1,#0B0H
         SETB     EA
         SETB     ET1
         SETB     TR1
         
         MOV      R7,#01H
  
  FLASH: MOV      A,R7 
         MOV      R2,A
         
         MOV      R0,#30H
         MOV      DPTR,#TABLE
 LOPFLA: MOV      A,R2  
         MOV      P2,A
         MOV      A,@R0
         MOVC     A,@A+DPTR
         MOV      P1,A
         
         MOV      R3,#0
         DJNZ     R3,$
         
         MOV      P1,#0FFH
         
         MOV      A,R2
         RL       A
         MOV      R2,A
         INC      R0
         CJNE     A,#1H,LOPFLA
         SJMP     FLASH
         
 TABLE:  DB       0C0H,0F9H,0A4H,0B0H,99H
         DB       92H,82H,0F8H,80H,90H,88H
         DB       83H,0C6H,0A1H,86H,8EH
         
   
 TIMER0: MOV      TH1,#3CH
         MOV      TL1,#0B0H
         MOV      A,R7
         RL       A
         MOV      R7,A 
         ;LJMP     FLASH
         RETI
         END