Question

using Assembly Language Write a code that gives the following output :-

*

**

***

****

*****

using registers and counters only.

Answer 1

.model tiny

.486

.data

.code

.startup

mov cx,1 ; registers used are cx,bx and si. dl and ah used for character printing.

mov bx,5

mov si,cx ; si is used to control the number of stars in each line, since cx keeps changing in x1 loop

x2:

x1:

mov dl, '*'   ; prints character

mov ah,02h

int 21h

dec cx

jnz x1

mov dl,0ah ;prints new line.

mov ah,02

int 21h

inc si

mov cx,si

dec bx

jnz x2