Divide 16 bit numbers by an 8 bit numbers
Introduction to Assembly language:
Assembly level language is the low level programming language which is used to interact with the machine architecture.
As we are aware, every computer system has a micro processor which understands only the string of 0s and 1s. These are called machine level instructions.These machine level instructions are very difficult and complex to understand and code. Hence a low level assembly language was designed to handle various operations in symbolic code. This requires less data and improves execution speed.
This assembly code is converted into executable machine instructions by a utility program. This is called as assembler. This whole conversion process is referred as assembly.
Algorithm :
Program :
.model small
.data
a dw 000FH
b db 08H
.code
mov ax, @data ; Initialize data section
mov ds, ax
mov ax, a ; Load number1 in ax
mov bl, b ; Load number2 in bl
div bl ; divide numbers. Quotient in al and Rem in ah
mov ch, 04h ; Count of digits to be displayed
mov cl, 04h ; Count to roll by 4 bits
mov bx, ax ; Result in reg bh
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-F
jbe l4
add dl, 07 ; if letter add 37H else only add 30H
add dl, 30H
mov ah, 02 ; Function 2 under INT 21H (Display character)
int 21H
dec ch ; Decrement Count
jnz l2
mov ah, 4cH ; Terminate Program
int 21H
end
You can find more assembly language codes here.
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