直流數字電壓表程序

① adc0809數字電壓表，用匯編語言，求代碼

匯編代碼：

程序代碼

LED_0EQU30H

LED_1EQU31H

LED_2EQU32H

ADCEQU35H

CLOCKBITP2.4

STBITP2.5

EOCBITP2.6

OEBITP2.7

ORG00H

SJMPSTART

ORG0BH

LJMPINT_T0

START:MOVLED_0,#00H

MOVP2,#0FFH

MOVLED_1,#00H

MOVLED_2,#00H

MOVDPTR,#TABLE

MOVTMOD,#02H

MOVTH0,#245H

MOVTL0,#00H

MOVIE,#82H

SETBTR0

WAIT:CLRST

SETBSTH

CLRST

JNBEOC,$

SETBOE

MOVADC,P1

CLROE

MOVA,ADC

MOVB,#51

DIVAB

MOVLED_2,A

MOVA,B

MOVB,#5

DIVAB

MOVLED_1,A

MOVLED_0,B

LCALLDISP

SJMPWAIT

INT_T0:CPL,CLOCK

RETI

DISP:MOVA,LED_0

MOVCA,@A+DPTR

CLRP2.3

MOVP0,A

LCALLDELAY

SETBP2.3

MOVA,LED_1

MOVCA,@A+DPTR

CLRP2.2

MOVP0,A

LCALLDELAY

SETBP2.2

MOVA,LED_2

MOVCA,@A+DPTRL

CLRP2.1

ORLA,#80H

MOVP0,A

LCALLDELAY

SETBP2.1

RET

DELAY:MOVR6,#10

D1: MOVR7,#250

DJNZR7,$

DJNZR6,D1

RET

TABLE:DB3FH,06H,5BH,4FH,66H

DB6DH,7DH,07H,7FH,6FH

END