1) Consider the instruction jal, which has the format: jal label.

a. The instruction can be used to implement a function call.

i. Provide an informal RTL (register transfer language) describing the instruction semantics

ii. Explain the way that the instruction should be mapped into a modified version of Figure 4.24 from the book by Patterson (below). You can assume the availability of a control line jal and a micro instruction of the form:

RF31 PC RF31 PC