Exercise [Arrays Part 2] Step 1: Create a new ASSEMBLY project using Keil Software Make sure you use the M3 option Make sure you name the folder COSC2440_Lab06_YourFirstName_YourLastName Step 2: Copy the following template to your assembly file: AREA Lab_06_YourFirstName_YourLastName, CODE, READONLY EXPORT __main __main MOV R0, SP ; Replace ___ with base register. MOV R1, #1 ; R1 will be used to increment the loop. MOV R2, #20; R2 will represent the number of iterations. MOV R3, #0 ; R3 will be used to hold the sum of the array. storeValuesLoop STR R1, [R0], #4;Store the value of R1 to address of R0, then auto increment the address by 4. Hint use STR instruction. ADD R1, #1; Increment the Loop by adding 1 to R1 CMP R1, R2; Compare R1 & R2 to determine if we need to exit the loop or not BLE storeValuesLoop; Stay in the loop if R1 is less than or equal to R2 MOV R1, #1 ; Reset R1 to start from the beginning again for the 2nd loop. MOV R0, SP; readValuesLoop LDR R4, [R0], #4;Read the value of current iteration to R4. Hint use LDR instruction. ADD R3, R4 ; Add the value your read [R4] to the sum [R3] ADD R1, #1; Increment the Loop by adding 1 to R1 CMP R1, R2; Compare R1 & R2 to determine if we need to exit the loop or not BLE readValuesLoop; Stay in the loop if R1 is less than or equal to R2 stop B stop END Step 3: Change YourFirstName to your first name. Change YourLastName to your last name. Step 4: Modify storeValuesLoop from using the STR-Post-indexed-autoindexing-post-incrementing to STR-Pre-indexed-autoindexing-pre-incrementing. You are ONLY allowed to modify the highlighted line inside the storeValuesLoop loop. Step 5: Modify readValuesLoop from using the LDR-Post-indexed-autoindexing-post-incrementing to LDR- indexed-Double Register with Scaling. You are ONLY allowed to modify the highlighted line inside the readValuesLoop loop. Step 6: After testing your program, answer the 2 questions in Blackboard quiz by filling the blanks. Make sure that you dont ADD any comments to your code and add only 1 space after each comma. Example: For question 1, you will enter: STR R4, [R0], #4 For question 2, you will enter: LDR R4, [R0], #4
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Question Completion Status:

QUESTION 1

1. Please enter in the Blank your modified instruction from Step 4.

   Make sure that you dont ADD any comments to your code and add only 1 space after each comma.

   Example:

   For question 1, you will enter: STR R4, [R0], #4

   For question 2, you will enter: LDR R4, [R0], #4

   Modify storeValuesLoop from using the STR-Post-indexed-autoindexing-post-incrementing to STR-Pre-indexed-autoindexing-pre-incrementing.

   You are ONLY allowed to modify the highlighted line inside the storeValuesLoop loop.

50 points

QUESTION 2

1. Please enter in the Blank your modified instruction from Step 5.

   Make sure that you dont ADD any comments to your code and add only 1 space after each comma.

   Example:

   For question 1, you will enter: STR R4, [R0], #4

   For question 2, you will enter: LDR R4, [R0], #4

   Modify readValuesLoop from using the STR-Post-indexed-autoindexing-post-incrementing to LDR- indexed-Double Register with Scaling.

   You are ONLY allowed to modify the highlighted line inside the readValuesLoop loop.