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CS220/hw4/example_9_2_1.asm

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+# Example program to display a string and an integer.
+# Demonstrates use of QtSpim system service calls.
+# -----------------------------------------------------
+# Data Declarations
+.data
+start:  .asciiz "------ START Program Example 9.2.1 ------\n"
+end:    .asciiz "\n------ END Program Example 9.2.1 ------\n"
+id:     .ascii "Student: Austin Bennett   (CS 220, id: 324855)\n"
+hdr:    .ascii "Example\n"
+        .asciiz "The meaning of life is: "
+number: .word 42
+# -----------------------------------------------------
+# text/code section
+.text
+.globl  main
+.ent    main
+main:
+    la $a0,     start
+    li $v0,     4
+    syscall
+
+    la  $a0,    id
+    li  $v0,    4       # call code, print string
+    syscall             # system call
+    
+    la $a0,     hdr
+    li $v0,     4
+
+    li  $v0,    1       # call code, print int
+    lw  $a0,    number  # value for int to print
+    syscall             # system call
+                        # ----
+    la $a0,     end
+    li $v0,     4
+    syscall   
+                        # Done, terminate program.
+    li $v0, 10          # terminate
+    syscall             # system call
+.end main

CS220/hw4/example_9_2_3.asm

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+# Example program to display an array.
+# Demonstrates use of QtSpim system service calls.
+# -----------------------------------------------------
+# Data Declarations
+.data
+    id:     .asciiz "Student: Austin Bennett   (CS 220, id: 324855)\n"
+    hdr:    .ascii "Squaring Example\n"
+            .asciiz "Enter Value: "
+    ansMsg: .asciiz "Value Squared: "
+    value:  .word 0
+    start:  .asciiz "------ START Program Example 9.2.3 ------\n"
+    end:    .asciiz "\n------ END Program Example 9.2.3 ------\n"
+
+# -----------------------------------------------------
+# text/code section
+.text
+.globl main
+.ent main
+main:
+    li $v0, 4
+    la $a0, start
+    syscall
+
+    li $v0, 4
+    la $a0, id
+    syscall
+
+    li $v0, 4           # call code for print string
+    la $a0, hdr         # addr of NULL terminated str
+    syscall             # system call
+    
+    li $v0, 5           # call code for read integer
+    syscall             # system call (result in $v0)
+    
+    mul $t0, $v0, $v0   # square answer
+    sw $t0, value       # save to variable
+    li $v0, 4           # call code for print string
+    la $a0, ansMsg      # addr of NULL terminated str
+    syscall             # system call
+    
+    li $v0, 1           # call code for print integer
+    lw $a0, value       # value for integer to print
+    syscall             # system call
+
+    li $v0, 4
+    la $a0, end
+    syscall     
+                        # -----
+                        # Done, terminate program.
+    li $v0, 10          # terminate
+    syscall             # system call
+.end main

CS220/hw4/question_2.asm

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+# Write A MIPS Assembly Program to ADD the Numbers: 4, 6, 8
+
+.data
+    start:  .asciiz "------ START Program Question 2 ------\n"
+    end:    .asciiz "\n------  END Program Question 2  ------\n"
+    id:     .asciiz "Student: Austin Bennett   (CS 220, id: 324855)\n"
+    tag:    .ascii "4 + 6 + 8 = "
+
+.text
+.globl main
+.ent main
+main:
+    li $v0, 4
+    la $a0, start
+    syscall
+
+    li $v0, 4
+    la $a0, id
+    syscall
+
+    li $v0, 4
+    la $a0, tag
+    syscall
+
+    li $t0,4
+    add $t1,$t1,$t0
+    li $t0,6
+    add $t1,$t1,$t0
+    li $t0,8
+    add $t1,$t1,$t0
+    
+    li $v0, 1
+    add $a0,$0,$t1
+    syscall
+
+    li $v0, 4
+    la $a0, end
+    syscall
+
+    li $v0, 10
+    syscall
+.end main

CS220/hw4/question_3.asm

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+# Write a program in MIPS that takes two values from the user and perform
+# subtraction between them and then print the subtraction result. 
+
+.data
+    start:  .asciiz "------ START Program Question 3 ------\n"
+    end:    .asciiz "\n------  END Program Question 3  ------\n"
+    id:     .asciiz "Student: Austin Bennett   (CS 220, id: 324855)\n"
+    val1:   .asciiz "First Value: "
+    val2:   .asciiz "Second Value: "
+    tag:    .asciiz "Result: "
+    value:  .word 0
+
+.text
+.globl main
+.ent main
+main:
+    li $v0, 4
+    la $a0, start
+    syscall
+
+    li $v0, 4
+    la $a0, id
+    syscall
+
+    # Print 1
+    li $v0,4 
+    la $a0,val1
+    syscall
+
+    # Read 1
+    li $v0, 5
+    syscall
+    move $t0,$v0
+
+    # Print 2
+    li $v0,4
+    la $a0,val2
+    syscall
+
+    # Read 2
+    li $v0,5
+    syscall
+    move $t1,$v0
+    
+    sub $t0,$t0,$t1
+    sw $t0, value
+
+    li $v0,4
+    la $a0,tag 
+    syscall
+
+    li $v0,1
+    lw $a0, value
+    syscall
+
+    li $v0, 4
+    la $a0, end
+    syscall
+
+    li $v0,10
+    syscall
+.end main

CS220/hw4/question_4.asm

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+.data
+    start:  .asciiz "------ START Program Question 3 ------\n"
+    end:    .asciiz "\n------  END Program Question 3  ------\n"
+    id:     .asciiz "Student: Austin Bennett   (CS 220, id: 324855)\n"
+    val:    .word   65
+
+.text
+.globl main
+.ent main
+main:
+    li $v0, 4
+    la $a0, start
+    syscall
+
+    li $v0, 4
+    la $a0, id
+    syscall
+
+    lw $t0, val
+    
+
+    move $t1, $t0
+    
+
+    li $v0, 4
+    la $a0, end
+    syscall 
+
+    li $v0, 10
+    syscall
+.end main

CS220/hw4/test.asm

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+.data
+  x: .word 30
+  y: .word 24
+
+  sum: .word 0
+  subt: .word 0
+
+  promptAdd: .asciiz "The sum of X and Y is : "
+  promptSub: .asciiz "\nThe difference of X and Y is : "
+
+.text
+.globl main
+.ent main
+
+main:
+
+lw $a0, x
+lw $a1, y
+
+jal Addition
+sw $v0, sum
+
+jal Subtraction
+sw $v0, subt
+
+la $a0, promptAdd
+li $v0, 4
+syscall
+
+lw $a0, sum
+li $v0, 1
+syscall
+
+la $a0, promptSub
+li $v0, 4
+syscall
+
+lw $a0, subt
+li $v0, 1
+syscall
+
+li $v0, 10
+syscall
+
+.end main
+
+.globl Addition
+.ent Addition
+
+Addition:
+
+li $v0, 0
+
+add $v0, $a0, $a1
+
+jr $ra
+
+.end Addition
+
+.globl Subtraction
+.ent Subtraction
+
+Subtraction:
+
+li $v0, 0
+
+sub $v0, $a0, $a1
+
+jr $ra
+
+.end Subtraction