LC3-Project-HW-3

--------What to turn in:

A conver sheet, as usual, and a brief write-up of your work. This
includes what you managed to get working, what you tried that didn't
work, what testbenches you used, and what parts were not attempted.
Of course, mention any test files you have added to your branch.
Of course, check in all your work.

-------What to do:

Using your own copy of the trunk/lib, implement the necessary elements 
for the correct execution of the LC3 instructions listed below. As usual,
some wires are missing at various levels, and control signals need to
be set.

(4) Branches (PC and register addressing): BR, JMP
(5) Load/Store (PC indirect addressing): LDI, STI