Computer Organization Lab 11

CSCI 2500 — Computer Organization
Lab 11 (document version 1.0)
ˆ This lab is due by the end of your lab session on Wednesday, November 20, 2019.
ˆ This lab is to be completed individually. Do not share your code with anyone else.
ˆ You must show your code and your solutions to a TA or mentor to receive credit for each
checkpoint.
ˆ Labs are available on Mondays before your lab sessions. Plan to start each lab early and
ask questions during office hours, in the discussion forum on Submitty, and during your lab
session.
1. Checkpoint 1: This lab focuses on material from Chapter 5 regarding cache memory. For
the first checkpoint, download the lab11.c code. Walk through the code to understand what
is expected overall.
Figuring out how many blocks (also known as slots or lines) exist in your direct-mapped cache
is rather straightforward. To do so, determine how many possible index bit combinations exist.
For example, with two bits, we have binary values 00, 01, 10, and 11, which is simply 22
.
Implement this in the block_count() function. Test with the cases shown in main(), but
also be sure to add more test cases to ensure your code works.
2. Checkpoint 2: For the second checkpoint, you will determine the index of a would-be cache
entry via the get_index() function. More specifically, given an address, a starting point for
your index, and the ending point of your index, implement logic in the get_index() function
to find the appropriate index in a direct-mapped cache.
As with the previous checkpoint, test with the cases shown in main(), but also be sure to
add more test cases to ensure your code works.
3. Checkpoint 3: For the third checkpoint, you will determine the size of a cache block via the
get_cache_block_size() function. More specifically, given the starting and ending point of
your index as well as the block offset bits (BOBs), determine the total cache block size.
As with the previous checkpoints, test with the cases shown in main(), but also be sure to
add more test cases to ensure your code works.