AP Lab Manual Sem 5

8/2/2019 AP Lab Manual Sem 5

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1

SVBIT 5th

SEM CE [AP]

AIM: Write a program to add two 8-bit numbers.

Program:

.model small

.data

a db 09H

b db 02H

.code

mov ax, @data

mov ds, ax

mov al, a

mov bl, b

add al, bl

mov ah, 4CH

int 21H

end

Output:


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2

SVBIT 5th

SEM CE [AP]

AIM: Write a program to subtract two 8-bit numbers.

Program:

.model small

.data

a db 0AH

b db 04H

.code

mov ax, @data

mov ds, ax

mov al, a

mov bl, b

sub al, bl

mov ah, 4CH

int 21H

end

Output:


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3

SVBIT 5th

SEM CE [AP]

AIM: Write a program to multiply two 8-bit numbers.

Program:

.model small

.data

a db 09H

b db 02H

.code

mov ax, @data

mov ds, ax

mov ah, 0

mov al, a

mov bl, b

mul bl

mov ah, 4CH

int 21Hend

Output:


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4

SVBIT 5th

SEM CE [AP]

AIM: Write a program to Add 8-bit BCD numbers.

Program:

.model small

.data

a db 09H

b db 02H

.code

mov ax, @data

mov ds, ax

mov al, a

mov bl, b

add al, bl

daa

mov ah, 4cHint 21H

end

Output:


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5

SVBIT 5th

SEM CE [AP]

AIM: Write a program to subtract 8-bit BCD numbers.

Program:

.model small

.data

a db 32H

b db 17H

.code

mov ax, @data

mov ds, ax

mov al, a

mov bl, b

sub al, bl

das

mov ah, 4cHint 21H

end

Output:


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6

SVBIT 5th

SEM CE [AP]

AIM: Write a program to divide 16 bit numbers by an 8 bit

numbers.

Program:

.model small

.data

a dw 000FH

b db 08H

.code

mov ax, @data

mov ds, ax

mov ax, a

mov bl, b

div bl

mov ah, 4cH

int 21H

end

Output:


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7

SVBIT 5th

SEM CE [AP]

AIM: Write a program to Add two 16-bit numbers.

Program:

.model small

.data

a dw 1234H

b dw 0100H

.code

mov ax, @data

mov ds, ax

mov ax, a

mov bx, b

add ax, bx

mov dx, ax

mov ah, 4cHint 21H

end

Output:


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8

SVBIT 5th

SEM CE [AP]

AIM: Write a program to subtract two 16-bit numbers.

Program:

.model small

.data

a dw 1234H

b dw 0100H

.code

mov ax, @data

mov ds, ax

mov ax, a

mov bx, b

sub ax, bx

mov dx, ax

mov ah, 4cHint 21H

end

Output:


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9

SVBIT 5th

SEM CE [AP]

AIM: Write a program to print HELLO!.

Program:

ORG 100h

MOV AH, 0EhMOV AL, 'H'INT 10hMOV AL, 'e'INT 10hMOV AL, 'l'INT 10hMOV AL, 'l'INT 10h

MOV AL, 'o'INT 10hMOV AL, '!'INT 10hRETOutput:


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10

SVBIT 5th

SEM CE [AP]

AIM: Write a Program to Display String using procedure.

Program:

.MODEL SMALL

.DATASTRING db 'Study of Microprocessor is Interesting $'

.CODEMOV AX,@DATAMOV DS,AX

CALL DISP

MOV AH,4CH

INT 21H

DISP PROC NEARMOV AH,09HLEA DX,STRINGINT 21H

ENDPRET

END

Output:


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11

SVBIT 5th

SEM CE [AP]

AIM: Write a Program to accept input from keyboard and display

it.

Program:

.MODEL SMALL

.STACK 100H

.DATA

.CODEMOV AX,@DATAMOV DS,AX

UP: MOV AH,01H ; Get input from keyboardINT 21H

CMP AL,30H ; If 0 is entered End programJE ENDDJMP UP

ENDD:MOV AH,4CH ; Terminate ProgramINT 21HEND

Output:

`


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12

SVBIT 5th

SEM CE [AP]

AIM: Write a Program for 32bit addition

Program:

.model small

.data

op1 dd 12345678h

op2 dd 11111111h

ans dd ?

.code

mov ax,@data

mov ds,ax

mov ax,word ptr op1 ; lsb of number1 in ax

mov bx,word ptr op1+2 ; msb of number1 in bxmov cx,word ptr op2 ; lsb of number2 in cx

mov dx,word ptr op2+2 ; msb of number1 in dx

add ax,cx ; add lsb + lsb

adc bx,dx ; add msb + msb + carry

mov word ptr ans,ax ; lsb answer

mov word ptr ans+2,bx ; msb answer

mov bx,word ptr ans+2 ; Result in reg bxmov dh,2

l1: mov ch,04h ; Count of digits to be displayed

mov cl,04h ; Count to roll by 4 bits

l2: rol bx,cl ; roll bl so that msb comes to lsb

mov dl,bl ; load dl with data to be displayed

and dl,0fH ; get only lsb

cmp dl,09 ; check if digit is 0-9 or letter A-Fjbe l4

add dl,07 ; if letter add 37H else only add 30H

l4: add dl,30H

mov ah,02 ; INT 21H (Display character)

int 21H


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SVBIT 5th

SEM CE [AP]

dec ch ; Decrement Count

jnz l2

dec dh

cmp dh,0mov bx,word ptr ans ; display lsb of answer

jnz l1

mov ah,4ch ; Terminate Program

int 21h

end

OR.model small

.data

op1 dd 12345678h

op2 dd 11111111h

.code

mov ax,@data

mov ds,ax

mov ax,word ptr op1 ; lsb of number1 in axmov bx,word ptr op1+2 ; msb of number1 in bx

mov cx,word ptr op2 ; lsb of number2 in cx


add ax,cx ; add lsb + lsb

mov cx,ax

adc bx,dx ; add msb + msb + carry


int 21h

end


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SVBIT 5th

SEM CE [AP]

Output:

OR

Output:


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15

SVBIT 5th

SEM CE [AP]

AIM: Write a Program for 32bit subtraction

Program:

.model small

.data

op1 dd 12345678h

op2 dd 11111111h

ans dd ?

.code

mov ax,@data

mov ds,ax


mov bx,word ptr op1+2 ; msb of number1 in bx



sub ax,cx ; add lsb + lsb

sbb bx,dx ; add msb + msb + carry

mov word ptr ans,ax ; lsb answer

mov word ptr ans+2,bx ; msb answer

mov bx,word ptr ans+2 ; Result in reg bx

mov dh,2

l1: mov ch,04h ; Count of digits to be displayed


l2: rol bx,cl ; roll bl so that msb comes to lsbmov dl,bl ; load dl with data to be displayed


cmp dl,09 ; check if digit is 0-9 or letter A-F

jbe l4


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l4: add dl,30H

mov ah,02 ; INT 21H (Display character)

int 21Hdec ch ; Decrement Count

jnz l2

dec dh

cmp dh,0

mov bx,word ptr ans ; display lsb of answer

jnz l1


int 21h

end

OR.model small

.data

op1 dd 12345678h

op2 dd 11111111h

.code

mov ax,@data

mov ds,ax


mov bx,word ptr op1+2 ; msb of number1 in bx



sub ax,cx ; add lsb + lsb

mov cx,ax

sbb bx,dx ; add msb + msb + carry


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int 21h

end

Output:

OR

Output:


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SVBIT 5th

SEM CE [AP]

AIM: Write a Program for counting the number of 1's in a number.

Program:

.model small

.dataa dw 5267H

.code

mov ax,@data ; Initialize data section

mov ds,ax

mov ax,a ; Load number in ax

mov bx,0 ; clear bx for counting number of 1in a given number.

mov cx,16 ; load count in cx registerback: rcr ax,1 ; rotate by 1 bit to the right

jnc l1 ; if bit is 0 goto next bit

inc bl ; if bit=1 increment count

l1: dec cx ; decrement counter

jnz back

mov ah,4cH ; Terminate Program

int 21Hend

Output:


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SVBIT 5th

SEM CE [AP]

AIM: Write a Program to find the factorial of a number.

Program:

.model small

.datanum dw 05h

.code

mov ax, @data

mov ds, ax

mov ax, 01

mov bx, num

call fact

mov dx,ax ; result save in dx

mov ah, 4ch

int 21h

fact proc near

cmp bx, 01

jz l11l12: mul bx

dec bx

cmp bx, 01

jne l12

ret

l11: ret

fact endp

end

Output:


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20

SVBIT 5th

SEM CE [AP]

AIM: Write a Program to sorting the numbers in ascending order.

Program:

.MODEL SMALL

.STACK 100

.DATA

NUM DW 0102H,0154H,0070H,0005H

.CODE

MOV AX,@DATA ; Initialise data segment

MOV DS,AX

MOV DX,2 ; DX has location where n0 is to be placed

LOOP2: MOV CX,DXDEC CX ; CX number of comparisons required

MOV SI,CX

add SI,si ; si*2 as word ptr

MOV AX,NUM[SI] ; Get the number

LOOP1:CMP NUM[SI-2],AX ; Compare it with previous number

JBE NEXT ; if prev num


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21

SVBIT 5th

SEM CE [AP]

l2: rol bx,cl ; roll bl so that msb comes to lsb

mov dl,bl ; load dl with data to be displayed


cmp dl,09 ; check if digit is 0-9 or letter A-Fjbe l4


l4: add dl,30H

mov ah,02 ; Function 2 under INT 21H (Display character)

int 21H


jnz l2

mov ah,02

mov dl,' ' ; Display space between 2 numbers

int 21h

inc si ; incr si twice as word ptr

inc si

dec dh

cmp dh,0

jnz l1


int 21H

END

OR.MODEL SMALL

.STACK 100

.DATA

NUM DW 0102H,0154H,0070H,0005H

.CODE

MOV AX,@DATA ; Initialise data segment

MOV DS,AX


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SVBIT 5th

SEM CE [AP]

MOV DX,2 ; DX has location where n0 is to be placed

LOOP2: MOV CX,DX

DEC CX ; CX number of comparisons required

MOV SI,CXadd SI,si ; si*2 as word ptr

MOV AX,NUM[SI] ; Get the number

LOOP1: CMP NUM[SI-2],AX ; Compare it with previous number

JBE NEXT ; if prev num


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SVBIT 5th

SEM CE [AP]

OR

Output:


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24

SVBIT 5th

SEM CE [AP]

AIM: Write a Program to sorting the numbers in descending order.

Program:

.MODEL SMALL

.STACK 100.DATANUM DW 0102H,0154H,0070H,0005H

.CODEMOV AX,@DATA ; Initialise data segmentMOV DS,AX

MOV DX,2 ; DX has location where n0 is to be placedLOOP2:MOV CX,DX

DEC CX ; CX number of comparisons required

MOV SI,CXadd SI,si ; si*2 as word ptrMOV AX,NUM[SI] ; Get the number

LOOP1: CMP NUM[SI-2],AX ; Compare it with previous numberJAE NEXT ; if prev num >= this num goto nextMOV DI,NUM[SI-2] ; elseMOV NUM[SI],DI ; insert in new posnDEC SI ; decrement siDEC SI

DEC CX ; Decrement comparison counterJNZ LOOP1 ; If not zero, repeatNEXT: MOV NUM[SI],AX ; Insert the number in proper position

INC DX ; Next number to be insertedCMP DX,4 ; Check if all numbers are insertedJBE LOOP2 ; If not continue


int 21HEND

OR

.MODEL SMALL

.STACK 100


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SVBIT 5th

SEM CE [AP]

.DATANUM DW 0102H,0154H,0070H,0005H

.CODEMOV AX,@DATA ; Initialise data segmentMOV DS,AX

MOV DX,2 ; DX has location where num is to be insertedLOOP2: MOV CX,DX

DEC CX ; CX number of comparisons requiredMOV SI,CXadd SI,si ; si*2 as word ptrMOV AX,NUM[SI] ; Get the number

LOOP1:CMP NUM[SI-2],AX ; Compare it with previous numberJAE NEXT ; if prev num >= this num goto next

MOV DI,NUM[SI-2] ; elseMOV NUM[SI],DI ; insert in new posnDEC SI ; decrement siDEC SIDEC CX ; Decrement comparison counterJNZ LOOP1 ; If not zero, repeat

NEXT: MOV NUM[SI],AX ; Insert the number in proper positionINC DX ; Next number to be insertedCMP DX,4 ; Check if all numbers are insertedJBE LOOP2 ; If not continue

mov si,offset nummov dh,4

l1: mov ch,04h ; Count of digits to be displayedmov cl,04h ; Count to roll by 4 bitsmov bx,[si] ; Result in reg bx


and dl,0fH ; get only lsbcmp dl,09 ; check if digit is 0-9 or letter A-F

jbe l4add dl,07 ; if letter add 37H else only add 30H

l4: add dl,30Hmov ah,02 ; Function 2 under INT 21H (Display character)int 21H


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SVBIT 5th

SEM CE [AP]

dec ch ; Decrement Countjnz l2

mov ah,02mov dl,' ' ; Display space between 2 numbersint 21hinc si ; incr si twice as word ptrinc sidec dhcmp dh,0

jnz l1

mov ah,4cH ; Terminate Programint 21H

ENDOutput:

OR


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SVBIT 5th

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Output:


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SVBIT 5th

SEM CE [AP]

AIM: Write a program for finding average.

Program:

.model small

.datablk1 db 01,02,03,04,05,06,07,08,09,0AHcount dw 000AH

.codemov ax,@data ;initialise data segmentmov ds,axmov ax,0 ;initialise ax=0mov si,offset blk1 ;initialise pointermov cx,count ;initialise countercld ;df=0

l1: add al,[si] ;add numbersinc si ;increment pointerdec count ;decrement counter

jnz l1 ;check if all nos are added

mov ah,00 ;ah=0mov bl,0AH ;initialise bl with countdiv bl ;average=sum/countmov dx,ax

mov ah,4cH ; Terminate Programint 21Hend

Output:


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29

SVBIT 5th

SEM CE [AP]

AIM: Write a Program for finding 1's complement of a number

Program:

.model small

.data

a dw 1234H

.code


mov ds,ax

mov ax,a ; Load number in ax

neg ax ; find 2's compement. Result in ax

sub ax,1 ; 1's complement=2's comp-1

mov ch,04h ; Count of digits to be displayed


mov bx,ax ; Result in reg bx




jbe l4


l4: add dl,30H

mov ah,02 ; Function 2 under INT 21H (Display character)int 21H


jnz l2


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int 21H

end

OR.model small

.data

a dw 1234H

.code


mov ds,ax

mov ax,a ; Load number in axneg ax ; find 2's compement. Result in ax

sub ax,1 ; 1's complement=2's comp-1

mov bx,ax


int 21H

end

OR

.model small

.data

a dw 1234H

.code


mov ds,ax

mov ax,a ; Load number in axmov cx,16 ; Load CX with count

up: rcl ax,1 ; Rotate ax by 1bit to left with carry

cmc ; find 1's complement of bit

loop up ; check if all bits complemented,if not goto up

rcl ax,1 ; return carry back to original position


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SVBIT 5th

SEM CE [AP]

mov ch,04h ; Count of digits to be displayed


mov bx,ax ; Result in reg bx




jbe l4


l4: add dl,30H

mov ah,02 ; Function 2 under INT 21H (Display character)

int 21Hdec ch ; Decrement Count

jnz l2


int 21H

end

OR

.model small

.data

a dw 1234H

.code


mov ds,axmov ax,a ; Load number1 in ax

mov cx,16 ; Load CX with count





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mov bx,ax


end

Output:

Output:

Output:

Output:


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33

SVBIT 5th

SEM CE [AP]

AIM: Write a Program for finding 2's complement of a number

Program:

.model small

.data

a dw 1234H

.code


mov ds,ax

mov ax,a ; Load number1 in ax

mov cx,16 ; Load CX with count





add ax,1 ; 2's complement=1's complement+1

mov bx,ax


end

OR

.model small

.dataa dw 1234H

.code


mov ds,ax

mov ax,a ; Load number1 in ax


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SVBIT 5th

SEM CE [AP]

neg ax ; find 2's compement. Result in ax

mov bx,ax


int 21H

end

Output:

Output:


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SVBIT 5th

SEM CE [AP]

AIM: Write a Program for 16 bit multiplication.

Program:

.model small

.dataa dw 1234Hb dw 0100H

.codemov ax,@data ; Initialize data sectionmov ds,axmov ax,a ; Load number1 in axmov bx,b ; Load number2 in bl

mul bx ; multiply numbers. Result in dx and ax

mov si,axmov bx,dx ; Result in reg bxmov dh,2

l1: mov ch,04h ; Count of digits to be displayedmov cl,04h ; Count to roll by 4 bits

l2: rol bx,cl ; roll bl so that msb comes to lsbmov dl,bl ; load dl with data to be displayedand dl,0fH ; get only lsbcmp dl,09 ; check if digit is 0-9 or letter A-F

jbe l4add dl,07 ; if letter add 37H else only add 30H

l4: add dl,30Hmov ah,02 ; Function 2 under INT 21H (Display character)

int 21Hdec ch ; Decrement Countjnz l2

dec dhcmp dh,0


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SVBIT 5th

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mov bx,sijnz l1


int 21Hend

Output:


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AIM: Write a Program to find maximum number in the array.

Program:

.model small

.stack 100

.dataarray db 61h,05h,42h,05H,12H,15h,09h,14h,56h,38h ; Arrayof10nosmax db 0

.codeMOV AX,@data ; Initialize DSMOV DS,AXXOR DI,DI ; Initialise pointer

MOV CL,10 ; Initialise counterLEA BX,ARRAY ; Initialise base pointer for arrayMOV AL,MAX ; Get maximum number

BACK: CMP AL,[BX+DI] ; Compare number with maximumJNC SKIPMOV DL,[BX+DI] ; If no > this no swapMOV AL,DL

SKIP: INC DI ; Increment pointer

DEC CL ; Decrement counterJNZ BACK ; check whether all the nos have beenscannedMOV CL,AL ; Store maximum number

mov ah,4cH ; Terminate Programint 21Hend

Output:

AP Lab Manual Sem 5

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