ECET330 Microprocessor Architecture
Week 3 Homework
Question 1Write a program to clear Register B, and then add the number three to B seven times. Use the BNE instruction with DECA.
Question 2Write a program to clear Register A, add five to Register A 10 times, and place the result in RAM Location $2000. Use a RAM location for holding the counter.
Question 3What is the size of each instruction?
LDAA #50
BEQ there
STAA $2000
DECB
LDAB 0, X
Question 4Write the sequence of instructions to save Registers A, Y, and X in the Stack with the given order. Write the sequence of instructions to retrieve those values back.
Saving A, Y, and X in Stack:
1 __________
2 __________
3 __________
Retrieving values back:
1 __________
2 __________
3 __________
Question 5Show code for a nested loop to perform an action 1,000 times.
