I. $(9$ points$)$ Complete the following problems, which will test your skill in writing RTL statements and identifying implied datapath hardware:

Write valid RTL statements that realize the following transitions. All registers are $1-$bit wide.

a$.$ If $=1$ THEN copy $x$ to $W$ and copy $Z$ to $Y$

b$.$ If $=1$ THEN copy $x$ to $W$; otherwise copy $Z$ to $Y$

c$.$ If $=0$ THEN copy $x$ to $W$

Show the hardware to implement the RTL statements developed for Part $1.($Your solution should resemble the examples shown in the "Register Transfer Language" lecture notes.$)$

II$.(21$ points$)$ Assume that all registers are $8$ bits wide and that all operations are $8-$bit operations. Show the hardware components and the needed interconnections to realize the

following RTL specification of a digital subsystem. $($Hint: Note the four control signals T$1,$ T$2,$ a $,$ and $.$ Some of these should be used as multiplexer select inputs, while others should be

used as the load inputs of registers R$1$ and R$2.$ Your solution should resemble the examples shown at the end of the "Register Transfer Language" lecture notes.$)$