Scribd
Upload
13 views5 pages

Mpmcexp 5

The document outlines an assembly program for multiplying two two-digit hexadecimal numbers using two methods: successive addition and the add and shift method. It includes a menu for user interaction, error handling for invalid inputs, and functions for reading input, displaying results, and converting hexadecimal to binary. The program concludes with a thank you message before exiting.

Uploaded by

shreyashmang
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
13 views5 pages

Mpmcexp 5

The document outlines an assembly program for multiplying two two-digit hexadecimal numbers using two methods: successive addition and the add and shift method. It includes a menu for user interaction, error handling for invalid inputs, and functions for reading input, displaying results, and converting hexadecimal to binary. The program concludes with a thank you message before exiting.

Uploaded by

shreyashmang
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 5

Program to multiply 2 two digit hexadecimal numbers using successive

addition and add and shift method


section .data
men db 10,13,"--------------- 8-BIT MULTIPLICATION --------------- "
db 10,13,"ENTER 1. SUCCESSIVE ADDITION"
db 10,13,"ENTER 2. ADD & SHIFT METHOD"
db 10,13,"ENTER 3. EXIT"
db 10,13,"ENTER YOUR CHOICE:"
menlen equ $ - men

msg1 db 10,13,"ENTER A 2-DIGIT NUMBER:"


msg1len equ $ - msg1

msg2 db 10,13,"THE PRODUCT IS:"


msg2len equ $ - msg2

newline db 10,13,""

err db 10,13,"INVALID INPUT..."


errlen equ $ - err

endmsg db 10,13,"THANK YOU..."


endmsglen equ $ - endmsg

section .bss
n resb 3
res resb 4
n1 resb 1
cho resb 2
%macro print 2
mov eax, 4
mov ebx, 1
mov ecx, %1
mov edx, %2
int 80h
%endmacro

%macro read 2
mov eax, 3
mov ebx, 0
mov ecx, %1
mov edx, %2
int 80h
%endmacro

section .text
global _start

_start:
menu:
print men, menlen
read cho, 2
cmp byte [cho], '1'
je SUCCESSIVE_ADDITION
cmp byte [cho], '2'
je ADD_SHIFT
cmp byte [cho], '3'
je finish
print err, errlen
jmp menu

;-----------------------------------------------

SUCCESSIVE_ADDITION:
xor rax, rax
xor rbx, rbx
xor rcx, rcx
xor rdx, rdx

print msg1, msg1len


read n, 3
call convert
push rbx

print msg1, msg1len


read n, 3
call convert
mov cx, bx
pop rbx
xor rax, rax

repet:
add ax, bx
loop repet
mov bx, ax
push rbx
print msg2, msg2len
pop rbx
call display
print newline, 1
jmp menu

;----------------------------------------------

ADD_SHIFT:
xor rax, rax
xor rbx, rbx
xor rcx, rcx
xor rdx, rdx

print msg1, msg1len


read n, 3
call convert
mov [n1], bl

print msg1, msg1len


read n, 3
call convert
mov [n], bl

xor rbx, rbx


xor rcx, rcx
xor rdx, rdx
xor rax, rax
mov dl, 08
mov al, [n1]
mov bl, [n]

UP1:
shr bx, 01
jnc L
add cx, ax

L:
shl ax, 01
dec dl
jnz UP1

mov rbx, rcx


push rbx
print msg2, msg2len
pop rbx
call display
print newline, 1
jmp menu

;----------------------------------------------

finish:
print endmsg, endmsglen
print newline, 1
mov eax, 1
mov ebx, 0
int 80h

;----------------------------------------------

display:
mov rcx, 4
mov rdi, res

back1:
rol bx, 4
mov al, bl
and al, 0fh
cmp al, 09h
jbe X
add al, 07h

X:
add al, 30h
mov [rdi], al
inc rdi
loop back1
print res, 4
ret

;----------------------------------------------

convert:
mov rcx, 02
mov rsi, n

up1:
rol bl, 04
mov al, [rsi]
cmp al, 39h
jbe p1
sub al, 07h

p1:
sub al, 30h
add bl, al
inc rsi
loop up1
ret
output

You might also like