assembly display characters in row using posy.txt

.model small
.stack 100h

.data

char db ?
str db "Input character:",'$'   
posx db 6
posy db 20

.code
main proc
    
mov ax,@data
mov ds,ax
mov ah,0
int 10h
mov ah,9
mov dx,offset str
int 21h
mov ah,8
int 21h
mov char,al 
mov ah,2
mov dh,posx
mov dl,posy 
int 10h 
mov cx,7 
loop1:
mov ah,2 
mov dl,char
int 21h
mov ah,2   
inc dh   
mov dl,posy
int 10h 
inc char 

loop loop1

main endp