Question

1. Given the below pseudocode, write the proper code that implements it using MARIE's assembly language:

                   Input a number and store it in X;

if X > 1 then

   Y := X + X;

   X := 0;

endif;

Y := Y + 1;

Output the value of Y;

N.B: You should include the MARIE code in your Answer, with an explanation of each instruction in your code beside it.

Example:              Subt One         /Subtract 1 from AC

2. Add a screenshot of the simulation, showing the result (A screenshot of the MARIE Simulator window after running the program).

Instructions:

• Use “ORG” instruction to start your program at address 100.
• Use your last university ID number to input the new value of X.

For example, if your ID is1915161678234, then you will use the number 4 as the value of x.

• Do not forget to change the representation of the Input and Output windows in the simulator to Decimal.
• The following labels and directives should be included at the end of your program:

X,      Dec 0

Y,      Dec 12

One,      DEC 1

Answer 1

MARIE PROGRAM

  ORG 100 //start program at address 100
        INPUT     //Get input from user which stores in AC
        STORE X //store  AC value in input
        SUBT One       //subtract 1 from AC
        SUBT One       //subtract 1 from AC
        SKIPCOND 000   //if AC < 0 skip next instruction
        JUMP Cond      //jump to Cond instructions
        JUMP Done      //jump to Done instructions
Cond,   LOAD X         //store X value in AC 
            ADD X          //Add X and AC and store result in Ac
            STORE Y        //store AC value in Y
            LOAD Zero      //store 0 in AC
            JUMP Done      //jump to Done instructions

Done,   LOAD Y         //store Y value in AC
            ADD One        //add 1 to AC
            OUTPUT         //Dispaly AC
            HALT           //End Program
            STORE X        //store X value in Ac
X,    DEC 0             //Initialize X with value 0
Y,    DEC 12            //Initialize Y with value 12
One,  DEC 1          //Initialize One with value 1
Zero, Dec 0          //Initialize Zero with value 0

MARIE PROGRAM SCREENSHOT

OUTPUT SCREENSHOT