new to assembly
 

hello everyone! i usually hang around the c++ area, but I'll need to learn assembly for computer architecture 2 in the fall so here it is. I wrote a simple program to convert temperatures from C to F. PCspim doesn't like it for some reason.

here are my codes, it just won't run.

        .text

        .globl _start

_start:



        la $a0, prompt   

        li $v0, 4

        syscall



        li $v0, 5        

        syscall



        mul $t0, $v0, 9 

        div $t0, $t0, 5  

        addi $t0, $t0, 32        



        la $a0, ans1

        li $v0, 4

        syscall



        move $a0, $t0

        li $v0, 1

        syscall



        la $a0, endl

        li $v0, 4

        syscall



        li $v0, 10

        syscall





        .data

        prompt:  .asciiz  "enter the temperature in celcius: "

        ans1:         .asciiz  "The temperature in F is: "

        endl:         .asciiz  "\n"

Re: new to assembly
 

Have you tested the installation, by writing the "hello world" program?

A simple print string and halt.

Re: new to assembly
 

yes I have, and it works fine :)

Re: new to assembly
 

OK, so it's just divide and conquer to move from something which works, to something which doesn't.

li $v0, 5
syscall
Does this actually return an integer result in a register?
Or did it assume a pointer to a string.

Imagine that I don't have the manual for your psim syscall's.

Re: new to assembly
 

ok, I'm an idiot. double underscore is require for _ _ start