I have just started self studying mc8051 and this is a very basic question. I have written a code (see below) but i am having trouble modifying it. Can you have a look?
.equ rsput,0042h
.equ rsget,044h
.org 2000h
loop: Icall rsget ;read a byte
Icall rsget ;writes a byte
sjmp loops ;loops forever
.end

How would you modify this so 4x4square asterisk is printed on the screen, but were do i get ASC11 value for* to put into A register. How would you prompt size size of a square then print square of stars e.g.
>6
******
******
******
******
******
******
Ifear you might think this is homework when i am too old to go to school.Thanks