In assembly language 8086 we use mnemonics in order to perform arithmetic operations like in MUL/IMUL subtraction.
So, Let's dive deep into what MUL and IMUL is ...
MUL:- It multiplies unsigned byte/word from source with unsigned byte/word in AL/AX register.
Operation:-
When source is BYTE then, AX← AL* unsigned 8-bit source
When source is BYTE then, DX: AX← AX* unsigned 16-bit source
IMUL:- It multiplies signed byte/word from source with signed byte/word in AL/AX register.
Operation:-
When source is BYTE then, AX← AL* signed 8-bit source
When source is BYTE then, DX: AX← AX* signed 16-bit source
Which flags get affected?
Ans- OF , CF, PF , AF, SF , ZF .
So, Let's dive deep into what MUL and IMUL is ...
MUL:- It multiplies unsigned byte/word from source with unsigned byte/word in AL/AX register.
Operation:-
When source is BYTE then, AX← AL* unsigned 8-bit source
When source is BYTE then, DX: AX← AX* unsigned 16-bit source
IMUL:- It multiplies signed byte/word from source with signed byte/word in AL/AX register.
Operation:-
When source is BYTE then, AX← AL* signed 8-bit source
When source is BYTE then, DX: AX← AX* signed 16-bit source
Which flags get affected?
Ans- OF , CF, PF , AF, SF , ZF .
data segment
no1 db 02h
no2 db 03h
ans db ?
data ends
code segment
start : assume cs :code, ds :data
mov ax ,data
mov ds , ax
mov al , no1
mov bl ,no2
imul b1
mov ans ,al
mov ah ,4ch
int 21h
code ends
end start
Programs:-
For many other Assembly Language Programs related to microprocessor 8086 , etc subjects related to MSBTE,Computer engineering, IT ...visit our BLOG
There are programs of largest ,smallest ,division ,multiplication,odd/even,block operation ,string operations ,etc
For many other Assembly Language Programs related to microprocessor 8086 , etc subjects related to MSBTE,Computer engineering, IT ...visit our BLOG
There are programs of largest ,smallest ,division ,multiplication,odd/even,block operation ,string operations ,etc
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