45. 8-BIT DIVISION IN 8086

8-BIT DIVISION FOR UNSIGNED NUMBERS

DATA SEGMENT

NUM1 DB 72H,

NUM2 DB 02H

QUO DB 1 DUP(0)

REM DB 1 DUP(0)

DATA ENDS

CODE SEGMENT

ASSUME CS:CODE,DS:DATA

START: MOV AX,DATA

MOV DS,AX

MOV AL,NUM1

MOV AH,0H

DIV NUM2

MOV QUO,AL

MOV REM,AH

MOV AH,4CH

INT 21H

CODE ENDS

END START

INPUT:        Dividend - 72H,

                    Divisor - 02 H,

0UTPUT:     AL - 39H (quotient);

                    AX - 00H (reminder);

INPUT:       Dividend - 55H,

                   Divisor - 04 H,

0UTPUT:    AL - 15H (quotient);

                   AX - 01H (reminder);

8-BIT DIVISION FOR SIGNED NUMBERS

DATA SEGMENT

NUM1 DB -10

NUM2 DB 02

QUO DB 1 DUP(0)

REM DB 1 DUP(0)

DATA ENDS

CODE SEGMENT

ASSUME CS:CODE,DS:DATA

START: MOV AX,DATA

MOV DS,AX

MOV AL,NUM1

CBW

IDIV NUM2

MOV QUO,AL

MOV REM,AH

MOV AH,4CH

INT 21H

CODE ENDS

END START

INPUT:   Dividend - -10

                Divisor - 03

0UTPUT:  AL – FDH (quotient);

                 AX – FF H (reminder) ; Result is in two complement form

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