print pyramid

mov bx,0


lop:
cmp bx, 4
JL printspace
hlt



printspace:

mov cx, 4
sub cx, bx
add cx,1

cmp cx,0
jz hold

mov cx,cx
mov ah,2
mov dl, ' '    ; print space
top1:
int 21H
loop top1


  cmp bx,0
  jz addbx


  add bx,2




jmp printstar



printstar:


 mov cx,bx
 mov ah,2
 mov dl, '*'
 top2:
 int 21h
 loop top2





mov ah,2
mov dl, 0AH
int 21h
              ;print newline
mov ah,2
mov dl, 0DH
int 21h


cmp bx,1
JNE subbx



jmp lop

hlt


hold:
hlt


addbx:

add bx,1

jmp printstar
hlt

subbx:

sub bx,1
jmp lop