微机原理课程设计电子时钟课程设计Word格式文档下载.docx

微机原理课程设计电子时钟课程设计Word格式文档下载.docx

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较时

电路

秒脉冲

发生器

报时

三：

程序流程图

三、电子表原理图：

四：

程序代码

D8279equ200H

C8279equ202H

C8253equ20bH

D82530equ208H

D82531equ209H

C82590equ210H

C82591equ211H

datasegment

HOURdb00

MINUTEdb00

SECONDdb008

STATdb00

LED

db31H,06H,5bH,4fH,66H,6dH,7dH,27H,7fH,6fH,00H,00H

DISBUFdb8dup（0）

dataends

stacksegmentstack

dw100dup（?

）

stackends

codesegment

assumecs:

code,ds:

data

START:

MOVAX,DATA

MOVDS,AX

CLI

MOVAL,13H

MOVDX,C82590

OUTDX,AL

MOVAL,8

MOVDX,C82591

MOVAL,1

MOVAX,0

MOVES,AX

LEAAX,INT0

MOVAX,CS

MOVES:

[4*8+2],AX

MOVDX,C8253

MOVAL,36H

MOVDX,D82530

MOVAX,10000

MOVAL,AH

MOVDX,D82531

MOVAX,100

MOVDX,C8279

MOVAL,00H

MOVAL,34H

MOVAL,0D2H

MOVSTAT,0

MOVAL,0FEH

WAIT1:

INAL,DX

MOVAH,AL

ANDAL,80H

JNEWAIT1

ANDAL,0FH

CMPAL,00H

JEWAIT1

MOVAL,40H

CHK:

MOVDX,D8279

CMPAL,33H

JNEBBB

MOVAL,0FFH

MOVAL,STAT

INCAL

MOVSTAT,AL

CMPAL,1

JNZAA1

MOVSI,OFFSETDISPBUF

MOVCX,4

MOVAL,00

BB0:

MOV[SI],AL

INCSI

LOOPBB0

CALLDISP

JMPCHK

AA1:

CMPAL,2

JNZAA2

ADDSI,2

AA2:

CMPAL,3

JNZAA3

MOVSI,OFFSETDISPBUF+2

BB1:

LOOPBB1

AA3:

MOVSTAT,00

CALLFULLSFM

BBB:

CMPAL,3BH

JEBBB0

JMPCCC

JNZBBB1

MOVAL,HOUR

ADDAL,1

DAA

MOVHOUR,AL

CALLFULLSH1

JMPBBB

BBB1:

JNZBBB3

MOVAL,MINUTE

MOVMINUTE,AL

CALLFULLFEN

BBB3:

JZBBB4

JMPDDD

BBB4:

MOVAL,SECOND

MOVSECOND,AL

CALLFULLMIAO

CCC:

CMPAL,3AH

JECC0

CC0:

JNZCCC1

SUBAL,1

DAS

CMPAL,60H

JNZFANHUI

MOVSECOND,0

MOVMINUTE,0

CMPAL,24H

MOVHOUR,0

POPSI

POPDI

POPBX

POPAX

IRET

FULLSFMPROCNEAR

LEADI,DISBUF

LEABX,LED

LEASI,SECOND

MOVCX,3

AA4:

MOVAL,[SI]

XLAT

MOV[DI],AL

INCDI

PUSHCX

MOVCL,4

SHRAL,CL

POPCX

INCSI

LOOPAA4

RET

FULLSFMENDP

FULLSHIPROCNEAR

LEASI,DISBUF

MOVAL,0

CCC0:

MOV[SI],AL

LOOPCCC0

FULLSHIENDP

FULLFENPROCNEAR

FULLFENENDP

FULLMIAOPROCNEAR

FULLMIAOENDP

DISPPROCNEAR

MOVCX,8

DISI

LOOPDISI

CODEENDS

ENDSTART