Question

please can you help me to solve it in Mips Assembly that works on Mars 4.5:

1. The function isEven, tests whether a number num is even or not.
2. Write the main function of a program that reads a nuber num, calls the function isEven and then prints a message to indicate whether num is even or not. And then, ask the user if she wants to continue or not (Y/N).

please answer it

Answer 1

MARS- MIPS Assembler and Runtime Simulator.

• An IDE for MIPS Assembly Language Programming.
• MARS is a lightweight interactive development environment (IDE) for programming in MIPS assembly language, intended for educational-level use.

Step 1- program in Mips assembly

.data

        prompt: .asciiz "\n Enter a number: "
        even_msg: .asciiz "\n The number is even.\n"
        odd_msg: .asciiz "\n The number is odd.\n"
        goodbye: .asciiz "\n If continew press Y\n"
.text
main:
        j loop
loop:
        la $a0, prompt
        li $v0, 4
        syscall

        # Read in value
        li $v0, 5
        syscall

        # If number is negative, exit program.
        slt $t0, $v0, $zero
        bne $t0, $zero, exit

        # Call even_or_odd on value
        add $a0, $v0, $zero
        jal even_or_odd
        j loop
even_or_odd:
        addi $t0, $zero, 2 # Set divisor to 2
        div $a0, $t0
        mfhi $t0           # Save remainder
        beq $t0, $zero, even
        j odd
even:
        la $a0, even_msg        
        li $v0, 4
        syscall
        j return
odd:
        la $a0, odd_msg
        li $v0, 4
        syscall
        j return
return:
        lw $t0, 0($sp)  
        addi $sp, $sp, 4
        jr $ra
exit:
        la $a0, If continew press Y 
        li $v0, 4
        syscall
        li $v0, 10
        syscall

Step 2- In this program first just message printed then function defined to check given no is even or odd.