Useful Exercises 

 Exercise 1

Suppose the initial content of AX is
00000000a7a6a5a4a3a2a1a0

Write a code fragment to insert 3 bit 0s into AX such that the content of AX is

00000a7a6000a5a4a3a2a1a0
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 Exercise: 2

Initially, the contents of AL is as follows

a7a6a5a4a3a2a1a0

Write a code fragment to set the contents of AL as

a0a1a2a3a7a6a5a4
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