COL216: Computer Architecture
Assignment 5
(No of Submissions: 2)
General Instructions: Read all the instructions below carefully before you start working on the assignment, and before you make a submission.
1. You will be using Vivado for simulation and synthesis.
2. The assignment should be done in groups of two. Only one member from each group should submit the assignment on Moodle.
3. Both group members should understand the problem and contribute equally to the solution.
4. You will be awarded marks according to your design and the test cases you developed to evaluate the design. Extensive testing is expected as a part of the Assignment
Problem
In this assignment, you will be adding MIPS conditional/unconditional branch instructions and procedure call instructions to the processor designed in Assignment 4. Make appropriate modifications to your code:
1. Implement the following branch instructions using J-type instruction format: bne, beq, blez, bgtz, j.
2. Implement the instructions used for procedure calls: jal, jr.
3. Implement non-leaf procedures (procedures that can call other procedures) using stack.
4. The stack should be implemented in memory and should grow downwards.
5. You can assume that a maximum of four arguments can be passed to a procedure.
6. You can use https://courses.cs.washington.edu/courses/cse410/09sp/examples/MIPSCallingCo nventionsSummary.pdf, as a reference document to understand MIPS procedure calls and stack layout.
Once the desired modifications are done, you need to simulate and synthesize the modified VHDL processor model. The output instructions remain the same as for Assignment 4.
