$2\mathrm{.}3.$ PRELIMINARY WORK

$23\mathrm{.}1.$ A simple program is written and placed between $$2000-$$$2022$ memory locations.

a$)$ Disassemble it and write the output of the execution.

$2000$: $8645970086459701$ CE $3434$ DF $02863797$

$2010$: $0486049705$ C$603$ CE $0000$ BD FF C$75$ SA $26$ F$7$

$2020$: $BD$ FF $x$

b$)$ Write the same program using AS$11$ assembler directives and utility subroutines.

$2\mathrm{.}3\mathrm{.}2.$ a$)$ Write a program that asks user to enter a character and returns a message whether it is a whitespace or not. The program must continue until 'ESC' character is entered. Propose an application area for this program.

b$)$ Write a program that asks user to enter a character and returns a message whether it is a delimiter or not. The program must continue until 'ESC' character is entered Propose an application area for this program.