CS401 Assignment 2 Solution Fall 2021 - Complete Proper Solution VU Answer

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CS401 Assignment No 2 Solution Fall 2021


Total Marks: 20

Due Date: 22 Dec 2021

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Important Note:

The main assembly code should call a subroutine that performs Task 1, then another subroutine would be called to calculate Task 2. After performing Task 2, it should call a subroutine to calculate Task 3. When the Task 3 is completed then the control should go to the subroutine of Task 2, then Task 1 and at end to the point where we initiate subroutine calling. 

Arithmetic series is a sequence of numbers in which each differs from the preceding one by a constant quantity. For example, the arithmetic series of ‘9’ can be calculated as follows:

9+8+7+6+5+4+3+2+1 = 45


Write an assembly language program to perform the following tasks: 

Task 1 - Find the largest digit in your VUID.

Task 2 - Add the largest value to each index value and write it back at the respective index of the VUID. For example, if the numbers in VUID are 030400789, then after task 2, the VUID should become 91291399161718.

Task 3 - Find the arithmetic series of the largest digit found in task 1 and store it in the “dx” register as shown in the sample screenshot.


Part 1:

1. Assembly language program.

[org 0x0100]

jmp start

    array_nums: dw 2,0,0,2,5,0,4,1,7


        mov ax, [array_nums + bx] 

        mov cx, 9


cmp ax,[array_nums + bx]

         jge maxloop

mov ax, [array_nums + bx]


      add bx, 2

       loop maxvalue

       mov bx, 0

      call asum




     add [array_nums + bx], ax

     add bx, 2

     cmp bx, 18 

     jb  loopArray

mov bx, ax

call revadd




add dx, ax

      sub  bx, 1

      sub  ax, 1

      cmp  bx, 1

      jge  la



       mov  bx, 0 

       mov  cx, 9

     call findbigNum

    mov ax,  0x4c00 ; terminate program

    int 0x21

Part 2:

Screenshot of AFD debugger showing the arithmetic series of the largest digit and the complete VUID in memory.

Showing the arithmetic series of the largest digit is 1C


For using command to show complete VU ID in memory

m2 ds:103

VU ID in Memory is

09 07 07 09 0C 07 0B 08 0E

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