Lab $1$: $\frac{C}{F}$ and $Km/$ Miles Conversions

The purpose of this lab is for you to get familiar with MIPS assembly language. In this lab,

you are going to write your first program in assembly.

Please write a program that converts temperature from $C$ to $F$ and from $F$ to $C.$ In your

program please use only integer instructions $($mul$,$ div, add,...$).$ To convert

Celsius larr$$ Fahrenheit, you can use the equations given below.

$F=\frac{9}{5}C+32,C=\frac{5}{9}(F-32)$

Your program will get inputs$/$outputs from$/$to the console $($please look at the examples

given in class$).$ It is necessary to have system calls in order to use the console.

For this program, you will need to use the following instructions:

mul $rd,rs,rt$ # multiply to integer numbers $rd=rs*rt$

div $rd,rs,rt$ # divide two integer numbers $rd=r\frac{s}{r}t$

After getting the temperature conversion program, you are to modify this program to

have conversion from $Km$ to Miles and vice versa.

REPORT

Please include the following items in your report.

Explain how your program works. You may use a flow chart, pseudo $C$ program, or

other way to explain the program.

Show a couple of examples.

Conclusion section. Explain what you learned here and what was difficult about this

lab.

A print out of your program. # Include comments in your program.

CODE

You are to submit your assembly program $($i$.$e$.$ a text file that can be run with QtSpim$)$

Program "Shell"

$.$ text

$.$ globl main

main:

la $$a0,$ conv # print conversion on terminal

$1i$$$sv0,4$

syscall

$11$ $v$0,5$ #yscall $5$ reads an integer

syscal$1$

## # if $v0=0$

### then C to F

### else E$\_$to$\_{?}_{-}^{-}.$

la sa$0,$prompc $$ print prompt on terminal

$1i$ sv$0,4$

syscall

$11$ $v$0,5$ #yscall $5$ reads an integer

syscall

## conversion is done here

## $C=\frac{9}{5},(F-32)$

## make sure your result is put in register $to

la sa$0,$ans$1$ #print string before result

$1i$ sv$0,4$

syscal$1$

move $$a0,st0$ # print result $($that is in register $to$)$

$1$ i $$v0,1$

syscall

la $$a0,$ endl # system call to print

li $$v0,4$ # print a new line

syscall

$11$ $v$0,10$

syscali # exit

data segment

$.$ data

conv: $.$asciiz $"$C$-(0)$ or $FF(1)$: $"$

prompc: $.$asciiz "Enter temperature in Celsius: $"$

ans$1$: $.$asciiz "Temperature in Fahrenheit is: $"$

prompf: $.$asciiz "Enter temperature in Fahrenheit: $"$

ans$2$: $.$asciiz "Temperature in Celsius is: $"$

endl: $.$asciliz $"$

$"$