Task $2-$ Define a string in the CODE memory $($end it with null$).$ For example

str: db 'I LOVE EMBEDDED SYSTEM DESIGN COURSE'

db $0$

Write a program to display a string $($with any content$),$ character by character, on the dot matrix display. DO NOT CHANGE THE CONTENT OF THE LOOKUP TABLE. it would help if you found a mapping function to convert a letter$($A$-$Z$)$ to the start address of that letter pattern in the table. Since the string only contains capital letters and space, you can use the following formula:

letter$\_$index $=$ string$[$ i $]-\text{'}$A$\text{'},$ for i$=0$ to length$($str$)$

start$\_$address $=$ start$\_$address$\_$of$\_$lookup$\_$table $+8*$ lettter$\_$index