單片機(jī)實(shí)驗(yàn)匯編

ID:274785 · 發(fā)表于 2018-1-11 13:59

   ORG 0000H
   SJMP MAIN
   ORG 0030H

MAIN:MOV P1,#0FFH
AAA: MOV A,P1
   CJNE A,#11110111B,BBB
   MOV P0,#0F9h
BBB:
   CJNE A,#11101111B,CCC
   MOV P0,#0A4h
CCC:
   CJNE A,#11011111B,DDD
   MOV P0,#0B0h
DDD:
   CJNE A,#10111111B,EEE
   MOV P0,#99h
EEE:
   CJNE A,#01111111B,AAA

   MOV R7,#10
   MOV R2,#0
LOOP:MOV A,R2
   MOV DPTR,#NUM
   MOVC A,@A+DPTR
   MOV P0,A
   INC R2
   CALL DELAYS
   DJNZ R7,LOOP
   JMP MAIN

DELAYS: MOV R3,#100
D11: MOV R4,#10
D12: MOV R5,#249
Dl:    NOP
      NOP
DJNZ R5,Dl
DJNZ R4,D12
DJNZ R3,D11
RET
NUM: DB 0C0h,0F9h,0A4h,0B0h,99h,92h,82h,0F8h,80h,90h
END

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