THIS IS MIPS ASSEMBLY LANGAUGE NOT x86 Write a MIPS assembly language program th

Question

THIS IS MIPS ASSEMBLY LANGAUGE NOT x86

Write a MIPS assembly language program that does currency conversion between US dollar and Japanese Yen.

The program must repeatedly present a menu that has 4 choices:

       1) Set the rate: prompts the user to input the exchange rate, e.g. if 1 US dollar  = 115 Yen then the user will input 115. The program then stores this information for future use. The initial rate should be set to 115.

       2) US $ -> Yen conversion: the program prompts the user for the US amount, then displays the Yen amount.

       3) Yen -> US $ conversion: the program prompts the user for the Yen amount, then displays BOTH the US $ amount AND the change in Yen. For example is the input was 250 and the rate is 115, the US $ amount is 2$, and the change is 20 Yen.

       4) Exit: the program exits.

and process the choice from the user accordingly.

Note: All numbers are integers, no need for floating point operations.

Explanation / Answer

Given below is the program with output. Please don't forget to rate the answer if it helped. Thank you.

.data
choice1: .asciiz "1. Set the rate "
choice2: .asciiz "2. US $ -> Yen "
choice3: .asciiz "3. Yen -> US $ "
choice4: .asciiz "4. Exit "
prompt1: .asciiz "Enter your choice: "
rate: .word 115 #1 usd = 115 yen
enterrate: .asciiz "Enter the rate for 1 USD: "
enterusd: .asciiz "How may Dollars? "
enteryen: .asciiz "How many Yens? "
usd: .asciiz " USD and change is "
yen: .asciiz " Yens "
.text
lw $t0 , rate #set the initial rate
menu:
#display the choice1
li $v0, 4
la $a0, choice1
syscall
#display the choice2
li $v0, 4
la $a0, choice2
syscall
#display the choice3
li $v0, 4
la $a0, choice3
syscall
#display the choice4
li $v0, 4
la $a0, choice4
syscall
#display the prompt
li $v0, 4
la $a0, prompt1
syscall
#get user choice and store in $t1
li $v0, 5
syscall
move $t1, $v0
#check and branch depending on choice
beq $t1, 4, exit
beq $t1, 1, setrate
beq $t1, 2, usd2yen
#yen to usd
#ask for no. of yens
li $v0, 4
la $a0, enteryen
syscall
#get input and store in $t2
li $v0, 5
syscall
move $t2, $v0
#divide yen by rate to get no. of USD and change
div $t2, $t0
mflo $t3 #quotient in low is usd
mfhi $t4 #remainder in hi is change
#display the result
li $v0, 1
move $a0, $t3
syscall
li $v0, 4
la $a0, usd
syscall
li $v0, 1
move $a0, $t4
syscall
li $v0, 4
la $a0, yen
syscall
b menu
setrate:
#prompt for rate
li $v0, 4
la $a0, enterrate
syscall
#get input and store in $t0
li $v0, 5
syscall
move $t0, $v0
b menu
usd2yen:
#prompt for no. of usd
li $v0, 4
la $a0, enterusd
syscall
#get input and store in $t2
li $v0, 5
syscall
move $t2, $v0
#multiply no. of usd with rate to get no. of yens and store in $t3
mul $t3, $t2, $t0
#display the results
li $v0, 1
move $a0, $t3
syscall
li $v0, 4
la $a0, yen
syscall
b menu
exit:
#exit
li $v0, 10
syscall



output


1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 2
How may Dollars? 10
1150 Yens
1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 3
How many Yens? 250
2 USD and change is 20 Yens
1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 1
Enter the rate for 1 USD: 114
1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 2
How may Dollars? 10
1140 Yens
1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 3
How many Yens? 250
2 USD and change is 22 Yens
1. Set the rate
2. US $ -> Yen
3. Yen -> US $
4. Exit
Enter your choice: 4
-- program is finished running --

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