4x4 block.asm

;4x4 solid box 

.model small 
.stack 100h
.data
var db 10,13, '**** $'
.code

main proc
    mov ax,@data
    mov ds,ax
    
    mov ah ,9
    lea dx,var
    int 21h
    int 21h 
    int 21h
    int 21h
    
    exit:
    mov ah,4ch
    int 21h
    main endp
end main