February 15

MIPS Addition: How to Add Two Numbers Example

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In this section, we will discuss how to add two number in MIPS instruction set(MIPS Addition). For addition MIPS we use R format in which an opcode ADD is used. To understand MIPS addition you must understand the following topics:

After the understanding of above topics proceed towards MIPS addition examples:

MIPS Addition Examples

We will discuss two types of examples here:

Q: Write a MIPS program to Take two values from the user, Add these values and print the output.

PROGRAM:

.data
msg1: .asciiz "Enter the first number: "
msg2: .asciiz "\nEnter the second number: "
result: .asciiz "\nThe result of addition is: "

.text
li $v0,4
la $a0,msg1
syscall

li $v0,5
syscall
move $t1,$v0

li $v0,4
la $a0,msg2
syscall

li $v0,5
syscall
move $t2,$v0

Add $t3,$t1,$t2

li $v0,4
la $a0,msg3
syscall

li $v0,1
move $a0,$t3
syscall

li $v0,10
syscall

OUTPUT:

Enter the first number: 5
Enter the second number: 5
The result of addition is: 10
Explanation

In the above program we use three registers $t1, $t2 and $t3. In register $t1 and $t2 we saved the values taken from the user and in register $t3 we saved the result of addition. We use Add Opcode for addition and used arithmetic and logical format.


Let’s take another example of MIPS Addition:

Q: Write a MIPS program to Take two values of your choice, Add these values and print the output.

PROGRAM:

.data
msg: .asciiz "The result of addition is: "

.text

li $t0,5
li $t1,5

Add $t3,$t0,$t1

li v0,4
la $a0,msg
syscall

li $v0,1
move $a0,$t3
syscall

li $v0,10
syscall

OUTPUT

The result of addition is: 10
Explanation

In the above program, we initialize $t0 and $t1 register with values 5. We didn’t used labels to input values from the user. We used only one label “msg” to display the results.

 


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