8086 assembly language program to clear the screen 
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Murugan Andezuthu Dharmaratnam | 
31 August 2020 | 
7385
31 August 2020 | 7385
sample code below is an 8086 program to clear the screen. this program clears the screen by direcrly writing into the video memory. b800 is the video memory address. below code write to the video memory and clears the screen
Sample Code
;----------------------------------------
;Program : clear screen
;FileName : clrscr.asm
;I/P : Nill
;O/P : clears the screen
;----------------------------------------
org 100h
mov ax,0b800h
mov es,ax
mov di,0
mov al,' '
mov ah,07d
loop_clear_12:
mov word ptr es:[di],ax
inc di
inc di
cmp di,4000
jle loop_clear_12
mov ah,4ch ; dos interrupt 21 function 4ch to terminate program
mov al,00
int 21h
ret
Generate executable using
tasm filename.asm
tlink /t filename