cseg segment
assume cs:cseg,ds:cseg
start:  mov ax,cseg
        mov ds,ax
        mov cl,1
        mov ch,5
ab0:    push cx
ab:     mov dl,' '
        mov ah,2
        int 21h
        dec ch
        jnz ab
ab1:    mov dl,'*'
        mov ah,2
        int 21h
        dec cl
        jnz ab1
        mov ah,2
        mov dl,0ah
        int 21h
        mov ah,2
        mov dl,0dh
        int 21h
        pop cx
        add cl,2
        dec ch
        jnz ab0
        mov ah,4ch
        int 21h
cseg    ends
        end start