Devry ECET330 Week 5 Homework Latest
ECET330 Microprocessor Architecture
Week 5 Homework
Question 1. Show the value of the register and the carry after the execution of the ASLA instruction.
Given the original content of Register A and carry flag
0 1 0 0 1 0 1 0 1
C
Question 2. Show the value of the register and the carry after the execution of the LSLB instruction.
Given the original content of Register B and carry flag
0 1 0 0 1 0 1 0 1
C
Question 3. Show the value of the register and the carry after the execution of the ASRB instruction.
Given the original content of Register B and carry flag
1 0 1 0 0 1 0 1 0
C
Question 4. Show the value of the register and the carry after the execution of the RORA instruction.
Given the original content of Register A and carry flag
1 1 0 1 1 1 1 1 0
C
Question 5. Show how to perform 77 x 34 in the HCS12. Store the result in a WORD-size variable called var1.
Question 6. Show how to perform 77 / 3 in the HCS12. Store the quotient in a WORD-size variable called result, and the remainder in a WORD-size variable called remainder.
Question 7. How are the following decimal-signed numbers represented in HCS12?
-12
+127
-128

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