1. Why is it necessary to initialize R2 in the character counting example in Section 6.1.4? In other words, in what manner might the program behave incorrectly if the R2 0 step were removed from the routine?
2. Using the iteration construct, write an LC-3 machine language routine that displays exactly 100 Zs on the screen.
3. Using the conditional construct, write an LC-3 machine language routine that determines if a number stored in R2 is odd.
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