Question

This assignment is designed to introduce you to using memory, input/output syscalls and if statements
a. Open the text editor and type in the following. Then save your work as “assign3.asm”. Note that there are
3 words of memory indicated that start at the address 0x10010000. Do not use labels in the data segment.
.data
.word 0
.word 0
.word 0
.globl main
.text
main:
b. Add the following zero terminated ascii strings (.asciiz) to the data segment right above the .globl directive
(after the .word directives).
1. Your name
2. “Enter a number “
3. “\n”
c. Add the MIPS assembly language instructions (after main:) to complete the following (in this order). Do
not skip steps. Use other registers as needed.
Actions:
1. Prompt the user to enter a number, read the number and then put it into memory at address
0x10010000
2. Prompt the user to enter a number, read the number and then put it into memory at address
0x10010004
3. Compare the two numbers and place the larger value into memory at address 0x10010008
4. Print the following output each on its own line. You will need to determine the location of each of the
strings from the beginning of the memory segment.
a. Your name
b. The value in address 0x10010000
c. The value in address 0x10010004
d. The value in address 0x10010008
Specifics:
• Use only the instructions covered to date plus the syscalls.
• Stop the program by using a syscall with the command 10.
• Test, test, test!!!!! The results in the memory and the output must be correct at the end of the
execution.
Documentation:
• Comment the beginning of your programs with your name, class ID, and assignment number.
• Comment every instruction.
Assignment 3 submittal:
• Upload your assembly language program (.asm file) using the link on the website.
• Be sure to click on the submit button.

Answer 1

Screenshot

Enter number 4 Enter number 5 Your name -- program is finished running -- #Declaration . data .word 0 .word 0 .word 0 .asciiz "Your name" .asciiz "Enter number" asciiz "n" .globl main .text main: #Prompt for first number addi $v0,$0,4 addi $a0,$0, 0x00000016 syscall #Read first number addi $v0,$0,5 syscall #Save into memory addi $t0,$0, 0x00000000 sw $v0,($t0) #Prompt for second number addi $v0,$0,4 addi $a0,$0, 0x00000016 syscall #Read number addi $v0,$0,5 syscall #Store into memory addi $t0,$0, 0x00000004 sw $v0, ($t0) #First value in to addi $a0,$0, 0x00000000 lw $t0,($aD) #Compare bgt $t0,$v0, saveFirst addi $t2,$0, 0x00000008 #Second value large in third word sw $v0,($t2) #Go to print section j print #Save first value in third word #Display values print: #Display "\n" addi $v0,$0,4 addi $a0,$0, 0x00000024 syscall #Display name addi $v0,$0,4 addi $a0,$0, 0x00000000 syscall #Display "\n" addi $v0,$0,4 addi $a0,$0, 0x00000024 syscall #Display first value add $a0,$0,$t0 addi $v0,$0,1 syscali #Display "\n" addi $v0,$0,4 addi $a0,$0, 0x00000024 syscall #Display secon value addi $t0,$0, 0x00000004 lw $al, ($t0) addi $v0,$0,1 syscall #Display "\n" addi $v0, 90,4 addi $a0,$0, 0x00000024 syscall #Display largest number addi $t0,$0, 0x00000008 lw $al, ($t0) addi $v0,$0,1 syscall #End of the program addi $v0,$0,10 syscall
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Program

#Declaration
.data
   .word 0
   .word 0
   .word 0
   .asciiz "Your name"
   .asciiz "Enter number "
   .asciiz "\n"
.globl main
.text
main:
    #Prompt for first number
    addi $v0,$0,4
    addi $a0,$0,0x00000016
    syscall
   #Read first number
    addi $v0,$0,5
    syscall
   #Save into memory
    addi $t0,$0,0x00000000
    sw $v0,($t0)
   #Prompt for second number
    addi $v0,$0,4
    addi $a0,$0,0x00000016
    syscall
   #Read number
    addi $v0,$0,5
    syscall
   #Store into memory
    addi $t0,$0,0x00000004
    sw $v0,($t0)
   #First value in to
    addi $a0,$0,0x00000000
    lw $t0,($a0)
    #Compare
    bgt $t0,$v0,saveFirst
    addi $t2,$0,0x00000008
    #Second value large in third word
    sw $v0,($t2)
    #Go to print section
    j print
#Save first value in third word
saveFirst:
    addi $t2,$0,0x00000008
    sw $t0,($t2)
#Display values
print:
   #Display "\n"
   addi $v0,$0,4
   addi $a0,$0,0x00000024
   syscall
   #Display name
   addi $v0,$0,4
   addi $a0,$0,0x0000000c
   syscall
   #Display "\n"
   addi $v0,$0,4
   addi $a0,$0,0x00000024
   syscall
   #Display first value
   add $a0,$0,$t0
   addi $v0,$0,1
   syscall
   #Display "\n"
   addi $v0,$0,4
   addi $a0,$0,0x00000024
   syscall
   #Display secon value
   addi $t0,$0,0x00000004
   lw $a0,($t0)
   addi $v0,$0,1
   syscall
   #Display "\n"
   addi $v0,$0,4
   addi $a0,$0,0x00000024
   syscall
   #Display largest number
   addi $t0,$0,0x00000008
   lw $a0,($t0)
   addi $v0,$0,1
   syscall
   #End of the program
   addi $v0,$0,10
   syscall

-------------------------------------------------

Output

Enter number 4
Enter number 5

Your name
4
5
5