In this project, you’ll be getting some basic experience with how to write assembly language. You will write a main() function. In main(), you will read four different variables, which will tell you what sorts of operations you must perform. For each of these four operations, you will read a set of four other variables and use the values in your calculations.

For instance, one testcase might be:

print: .word 1
sum: .word 0
multiply: .word 0
minimum: .word 1
foo: .byte 0
bar: .word 42
baz: .word 17
fred: .half -123

Your program will read the values of print, sum, multiply, and minimum. For each that is nonzero, your program will perform that operation; you may have to perform zero, one, or multiple operations.

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These solutions may offer step-by-step problem-solving explanations or good writing examples that include modern styles of formatting and construction of bibliographies out of text citations and references. Students may use these solutions for personal skill-building and practice. Unethical use is strictly forbidden.

msg1: .asciiz "Printing the four values:"
msg2: .asciiz "Running totals:"
msg3: .asciiz "\"Multiplying\" each value by 7:"
msg4: .asciiz "Minimum:"
newline: .asciiz "\n"
blank: .asciiz " "
blank2: .asciiz " "
# Function prologue -- even main has one
addiu $sp, $sp, -24   # allocate stack space -- default of 24 here
sw    $fp, 0($sp)    # save caller's frame pointer
sw    $ra, 4($sp)    # save return address
addiu $fp, $sp, 20    # setup main's frame pointer

lw $t0, print # t0 = print
beq $t0, 0, action2 # if print==0 skip to action2

la $a0, msg1 # printing the message
addi $v0, $zero, 4

la $a0, newline # printing new line
addi $v0, $zero, 4

lb $a0, foo # printing foo
addi $v0, $zero, 1

la $a0, newline # printing new line
addi $v0, $zero, 4

lw $a0, bar #printing bar
addi $v0, $zero, 1

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