電子發(fā)燒友App
程序的具體內(nèi)容如下：
$MOD52?
? ORG?? 0000H
???????? LJMP? MAIN
???????? ORG?? 0003H
???????? LJMP? 0100H
???????? ORG?? 0013H
???????? LJMP? 0150H
???????? ORG?? 0050H
MAIN:??? CLR?? A
???????? MOV?? 30H , A?????????? ;初始化緩存區(qū)
???????? MOV?? 31H , A
???????? MOV?? 32H , A
???????? MOV?? 33H , A
???????? MOV?? R6? , A
???????? MOV?? R7? , A
? SETB? EA
? SETB? EX0
? SETB? EX1
? SETB? IT0
? SETB? IT1
? SETB? PX1
NEXT1:?? ACALL HEXTOBCDD??????? ;調(diào)用數(shù)制轉(zhuǎn)換子程序
???????? ACALL DISPLAY????????? ;調(diào)用顯示子程序
???????? LJMP? NEXT1
???????? ORG?? 0100H? ;中斷0服務(wù)程序
?LCALL? DELY
?mov 70h,#2
?djnz 70h,next
?JBC? F0,NEXT
??????? SETB F0
??????? CLR P0.0
?LCALL? DELY0
?SETB?? P0.0????????
???????? MOV?? A , R7
? ?ADD?? A , #1
? ?MOV?? R7, A
? ?MOV?? A , R6
???????? ADDC? A , #0
? MOV?? R6 , A
? CJNE? R6 , #07H , NEXT
? CLR?? A
? MOV?? R6 , A
? MOV?? R7 , A
NEXT:? RETI
? ORG?? 0150H? ??;中斷1服務(wù)程序
?LCALL? DELY
?mov 70h,#2
?djnz 70h,next2
?JBC? F0,NEXT2
?SETB? F0
?CLR P0.0
?LCALL? DELY0
?SETB?? P0.0??
?CLR C???????????
???????? MOV?? A , R7
?
? SUBB?? A , #1
? MOV?? R7, A
? MOV?? A , R6
?? SUBB? A , #0
? MOV?? R6 , A
? CJNE? R6 , #07H , NEXT2
? CLR?? A
? MOV?? R6 , A
? MOV?? R7 , A
NEXT2:? RETI
? ORG?? 0200H
HEXTOBCDD:MOV? A , R6?????????????? ;由十六進(jìn)制轉(zhuǎn)化為十進(jìn)制
???????? PUSH? ACC
???????? MOV?? A , R7
???????? PUSH? ACC
? MOV?? A , R2
???????? PUSH? ACC
? CLR?? A
???????? MOV?? R3 , A
? MOV?? R4 , A
? MOV?? R5 , A
? MOV?? R2 , #10H
HB3:???? MOV?? A? , R7????????????? ;將十六進(jìn)制中最高位移入進(jìn)位位中
???????? RLC?? A
? MOV?? R7 , A
? MOV?? A? , R6
? RLC?? A
? MOV?? R6 , A
? MOV?? A? , R5????????????? ;每位數(shù)加上本身相當(dāng)于將這個(gè)數(shù)乘以2
? ADDC? A? , R5
? DA??? A
? MOV?? R5 , A
? MOV?? A? , R4
? ADDC? A? , R4
? DA??? A?????????????????? ;十進(jìn)制調(diào)整
? MOV?? R4 , A
? MOV?? A? , R3
? ADDC? A? , R3
? DJNZ? R2 , HB3
? POP?? ACC
? MOV?? R2 , A
? POP?? ACC
? MOV?? R7 , A
? POP?? ACC
? MOV?? R6 , A
? RET
? ORG?? 0250H
DISPLAY:
?MOV?? R0 , #30H
???????? MOV?? A? , R5
? ANL?? A? , #0FH
? MOV?? @R0 , A
? MOV?? A? , R5
? SWAP? A
? ANL?? A? , #0FH
? INC?? R0
? MOV?? @R0 , A
? MOV?? A? , R4
? ANL?? A , #0FH
? INC?? R0
? MOV?? @R0 , A
? MOV?? A?? , R4
? SWAP? A
? ANL?? A? , #0FH
? INC?? R0
? MOV?? @R0 , A
? MOV?? R0 , #30H
? MOV?? R2 , #11111110B
AGAIN:?? MOV?? A? , R2
???????? MOV?? P2 , A
???????? MOV?? A? , @R0
? MOV?? DPTR , #TAB
? MOVC? A? , @A+DPTR
? MOV?? P1 , A
? ACALL DELAY
? INC?? R0
? MOV?? A? , R2
? RL??? A
? MOV?? R2 , A
? JB??? ACC.4? , AGAIN
? RET
TAB:???? DB??? 03FH , 06H , 5BH , 4FH , 66H , 6DH , 7DH , 07H , 7FH , 6FH?? ;七段碼表
DELY:??? MOV?? R1,#80
D1:??????? MOV??? R2,#100
???????????? DJNZ?? R2,$
?DJNZ??? R1,D1
?RET?
DELAY:?? MOV?? TMOD , #01H?????????? ;延時(shí)子程序
???????? MOV?? TL0? , #0FEH
???????? MOV?? TH0? , #0FEH
? SETB? TR0
WAIT:??? JNB?? TF0? , WAIT
???????? CLR?? TF0
? CLR?? TR0
? RET
DELY0:?? MOV? R1,? #200
D3:? MOV? R2,#250
???????? DJNZ? R2,$
? DJNZ? R1,D3
?
? RET?
???????? END
????????
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