$1.$ First, configure your code and data memory. The $$MAIN:$$ program starts at code memory$$

location $30$H$.$ The first integer uses code memory locations $100$H$,101$H$,$ and $102$H in the Intel$$

MC$8051$ little endian format $($least significant byte stored at the low address$).$ The second integer$$

uses code memory locations $105$H$,106$H$,$ and $107$H$.$

$2.$ Second, configure parallel port $0,$ port $1,$ port $2,$ and P$3\mathrm{.}0$ for output $($write $0$ in the port once$$

during initialization$).$ Write and debug the code to add the two integers and store the answer in$$

internal data memory locations $40$H$,41$H$,$ and $42$H$.$ Update P$0,$ P$1,$ and P$2$ to display the same$$

addition result. Flag an overflow condition on P$3\mathrm{.}1$ by setting it$.$

$3.$ Third, rewrite the program utilizing two subroutines to make use of the repeated code blocks.$$