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EENG 260 – HW #2

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HOMEWORK #2

Total points: 50 points

Due: Monday – May 2, 2016 in class before the lecture begins

Late submission due: 5:00PM Tuesday, May 3, 2016 (Will be graded only for 35 points)

1. Write the instruction or instruction sequence to perform the following tasks [10 Points]

a. Copy contents of accumulator A into B and contents of accumulator B into A b. Copy contents of memory location $2000 into memory location $3000 c. Copy the contents of memory location $1500 and $1501 into index register X d. Copy contents of accumulator A into B e. Multiply the two 16-bit unsigned values at $1000~$1001 and $1005~$1006

2. Write an instruction sequence to store the value of $20 in three memory locations starting from $1000 and then add the three values and store the result at $1500. [10 Points]

3. Write an instruction sequence in HCS12 assembly to subtract the number stored at $1110 from the difference of the numbers stored at $1000 and $1005. Store the result at $1010. [10

points]

4. Write an instruction sequence to add two 24-bit numbers stored at $1010~$1012 and $1013~$1015 and save the sum at $1100~$1102. [10 points]

5. Write a program to add a 4 byte number located at $1004~$1007 to the product of two 16-bit numbers that are stored at $1000~$1001 and $1002~$1003 and save the result at

$1100~$1103. [10 points]