MIPS Assignment #2

CS 218 – MIPS Assignment #2
Purpose: Become familiar with RISC Architecture concepts, the MIPS Architecture, and SPIM
(the MIPS simulator).
Points: 50
Assignment:
Write a MIPS assembly language program to calculate the volume of each
three dimensional hexagonal prism1
 in a series of hexagonal prisms.
The volume of a hexagonal prism is computed as follows:
 hexVolume [i] = ( 3 ∗ apothems[ i] ∗ bases[i] ∗ heights[i] )
Once the volumes are computed, the program should find the minimum,
maximum, estimated median value, and average for the computed total
volumes.
Since the list is not sorted, we will estimate the median value. Since the list length is even, the
estimated median will be computed by summing the first, last, and two (2) middle values and then
dividing by 4.
The program should display the results to the console window. The output should look something like
the following (with the correct answers displayed and 4 numbers per line):
1 For more information, refer to: https://en.wikipedia.org/wiki/Hexagonal_prism
MIPS Assignment #2
 Hexagonal Volumes Program:
 Also finds minimum, middle value, maximum,
 sum, and average for the volumes.
 8996130 8343432 10642905 16329852
 12316920 12969000 10735452 15979680
 14863842 20054016 5960034 15707439
 [ ... truncated for space ... ]
Hexagon Volumes Minimum = ?
Hexagon Volumes Est Med = ?
Hexagon Volumes Maximum = ?
Hexagon Volumes Sum = ?
Hexagon Volumes Average = ?
Submission:
• All source files must assemble and execute with QtSpim/SPIM MIPS simulator.
• Submit source file
◦ Submit a copy of the program source file via the on-line submission
• Once you submit, the system will score the project and provide feedback.
◦ If you do not get full score, you can (and should) correct and resubmit.
◦ You can re-submit an unlimited number of times before the due date/time (at a maximum
rate of 5 submissions per hour).
• Late submissions will be accepted for a period of 24 hours after the due date/time for any given
assignment. Late submissions will be subject to a ~2% reduction in points per an hour late. If
you submit 1 minute - 1 hour late -2%, 1-2 hours late -4%, … , 23-24 hours late -50%. This
means after 24 hours late submissions will receive an automatic 0.
Program Header Block
All source files must include your name, section number, assignment, NSHE number, and program
description. The required format is as follows:
# Name: <your name>
# NSHE ID: <your id>
# Section: <section>
# Assignment: <assignment number>
# Description: <short description of program goes here>
Failure to include your name in this format will result in a reduction of points.
Scoring Rubric
Scoring will include functionality, code quality, and documentation. Below is a summary of the
scoring rubric for this assignment.
Criteria Weight Summary
Assemble - Failure to assemble will result in a score
of 0.
Program Header 3% Must include header block in the
required format (see above).
General Comments 7% Must include an appropriate level of
program documentation.
Program Functionality
(and on-time)
90% Program must meet the functional
requirements as outlined in the
assignment. Must be submitted on time
for full score.
MIPS Assignment #2 – Data Declarations
Use the following data declarations:
apothems: .word 110, 114, 113, 137, 154
.word 131, 113, 120, 161, 136
.word 114, 153, 144, 119, 142
.word 127, 141, 153, 162, 110
.word 119, 128, 114, 110, 115
.word 115, 111, 122, 133, 170
.word 115, 123, 115, 163, 126
.word 124, 133, 110, 161, 115
.word 114, 134, 113, 171, 181
.word 138, 173, 129, 117, 193
.word 125, 124, 113, 117, 123
.word 134, 134, 156, 164, 142
.word 206, 212, 112, 131, 246
.word 150, 154, 178, 188, 192
.word 182, 195, 117, 112, 127
.word 117, 167, 179, 188, 194
.word 134, 152, 174, 186, 197
.word 104, 116, 112, 136, 153
.word 132, 151, 136, 187, 190
.word 120, 111, 123, 132, 145
bases: .word 233, 214, 273, 231, 215
.word 264, 273, 274, 223, 256
.word 157, 187, 199, 111, 123
.word 124, 125, 126, 175, 194
.word 149, 126, 162, 131, 127
.word 177, 199, 197, 175, 114
.word 244, 252, 231, 242, 256
.word 164, 141, 142, 173, 166
.word 104, 146, 123, 156, 163
.word 121, 118, 177, 143, 178
.word 112, 111, 110, 135, 110
.word 127, 144, 210, 172, 124
.word 125, 116, 162, 128, 192
.word 215, 224, 236, 275, 246
.word 213, 223, 253, 267, 235
.word 204, 229, 264, 267, 234
.word 216, 213, 264, 253, 265
.word 226, 212, 257, 267, 234
.word 217, 214, 217, 225, 253
.word 223, 273, 215, 206, 213
heights: .word 117, 114, 115, 172, 124
.word 125, 116, 162, 138, 192
.word 111, 183, 133, 130, 127
.word 111, 115, 158, 113, 115
.word 117, 126, 116, 117, 227
.word 177, 199, 177, 175, 114
.word 194, 124, 112, 143, 176
.word 134, 126, 132, 156, 163
.word 124, 119, 122, 183, 110
.word 191, 192, 129, 129, 122
.word 135, 226, 162, 137, 127
.word 127, 159, 177, 175, 144
.word 179, 153, 136, 140, 235
.word 112, 154, 128, 113, 132
.word 161, 192, 151, 213, 126
.word 169, 114, 122, 115, 131
.word 194, 124, 114, 143, 176
.word 134, 126, 122, 156, 163
.word 149, 144, 114, 134, 167
.word 143, 129, 161, 165, 136
hexVolumes: .space 400
len: .word 100
volMin: .word 0
volEMid: .word 0
volMax: .word 0
volSum: .word 0
volAve: .word 0
Note, the .space 400 directive reserves 400 bytes which will be used to store 100 words.