10 x10 block.asm

 ;10*10 block 
 
.model small
.stack 100h
.data
a db 'start point $'
.code
main proc
    mov ax,@data
    mov ds,ax
    
    mov ah,9
    lea dx,a
    int 21h
    
    mov ah,2                    
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    
    mov cx,10
    lea:
    mov dl,'*'
    mov ah,2
    int 21h
    int 21h
    int 21h  
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    int 21h 
    
    mov ah,2
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    
    loop lea
    
    exit:
    mov ah,4ch
    int 21h
    main endp
end main