QtSpim is a user interface built on the Qt UI framework for Spim, a self-contained simulator that runs MIPS32 programs.
QtSpim is a user interface built on the Qt UI framework for Spim, a self-contained simulator that runs MIPS32 programs.
Questions tagged [qtspim]
287 questions
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0 answers
MIPS parsing error
I just started to learn mips32 and I use QtSpim emulator on Windows 10. I get that error when I try to load the following code :
.data
X: .byte 5,1,4,2,8
.text
.globl main
main:
deb:
xor $t4, $t4, $t4
la $t3, X
addi $t5,…
HelloWorld
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- 3
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1 answer
MIPS bne parser syntax error
I am trying to learn the MIPS assembly language for my CS class. I am struggling syntactically trying to write this program. I have looked at the other example my professor gave us and I followed it closely. I am getting an error on my branch not…
Chris McCole
- 59
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- 15
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0 answers
Random number MIPS assembly without syscall
Is there anyway to generate a random number with assembly MIPS without using sycall 42? Because if I use it, qtspim v9.17 says "Uknown system call: 42"
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0 answers
Unaligned address in store
I have this code and it tells me i have unaligned address in store when saving a double . Can someone please tell me what is happening?? Specifically i am getting the error message in the first sdc1 when i'm putting in the first value for A(1,1).…
Christina J
- 79
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- 8
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1 answer
MIPS exceptions what do they mean
I've been studying assembly lately and i can't seem to understand how the exceptions work exactly. More specific, i get the message Exception 6 occurred and ignored. Can someone please explain what exactly does this mean? I am using qtspim.
Christina J
- 79
- 2
- 8
0
votes
1 answer
I/O System Call needs exit
If I do a i/o system call or more, when I finish I should do an exit call (code 10) or not is necessary?
I make an example:
.data
input_message: .asciiz "\nEnter an integer: "
.text
.globl main
main:
li $v0, 4
…
azkidenz
- 53
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0 answers
Mips split input
I am new to Mips. I want to make a calculator with MIPS. I made a research about how can I split the user input, but I could not find it.
For example, input:"567/45" I want to split and load into registers like t0=567, t1=/, t2=45.
Is this…
M.J.Watson
- 470
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Why do I get an endless loop in MIPS (using QTSPIM)
I'm new to MIPS and I'm trying to create a simple program, but I get an endless loop and I don't understand why.
I'm trying to point to a size variable with a global pointer and load it to $s1.
Here is my code:
.data 0x10000000
size: .word…
Niv Goren
- 11
- 2
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0 answers
In MIPS Assembly language, when do you know when to use syscall?
I am not looking for a subjective answer, but rather a concrete one.
I thought you were supposed to use syscall when you finish writing an instruction.
However, the following code when put into QTSpim gives me the error: "Unknown System Call:…
user4351838
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2 answers
Opening file always returns "-1" in QtSpim
I'm working on a university project where we have to write Data to a file via MIPS. I get everything to run on MARS, but on QtSpim, just opening a file always returns an error:
.data
file_name: .asciiz "test.pgm"
#
# main
#
.text
.globl…
Aram Becker
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1 answer
something wired about lw instruction when I use QtSpim
[00400028] 8d090008 lw $9, 8($8); lw $t1, 0x008($t0)
[0040002c] 312a0002 andi $10, $9, 2 ; 5: andi $t2,$t1,0x2
[00400030] 1148fffd beq $10, $8, -12 [chkswitch-0x00400030]
[00400034] 3c010001 lui $1, 1 ; 7: lw…
black tracker
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- 1
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votes
1 answer
Check number of occurences of a char in a string in MIPS?
so I'm writing a simple program that prints how many times a custom char occurs in a custom string. Here is my code:
.data
command1: .asciiz "Please enter a sentence "
command2: .asciiz "Please enter a character "
count: .word…
user6627083
- 33
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- 4
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1 answer
Finding Kth distinct element in an array MIPS
I am trying to write MIPS equivalent of the C code below.
int arrayData[5] = { 1,2,1,3,4 };
int K = 3;
int KCtr = 0;
int result;
bool isUnique;
for (int o = 1; o < 5; o++)
{
isUnique = true;
for (int i = 0; i < o; i++)
{
if…
Muhammet Ali Asan
- 1,486
- 22
- 39
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votes
1 answer
My QTSPIM simulator says error, when i run this code
i am working on a class project and what i wan to do, is ask theuserfor 2 integers, when prompted by the message"please enter an integer:" and alsoto enter a character when the message"please enter an operator(+, *, -, /)" pops up. can someone…
TINA15
- 13
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- 10
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0 answers
Convert C to MIPS
Having trouble converting this C code into MIPS
if (integers == 0 && forward != 0)
{
for (char *ptr = str; *ptr != ’\0’; ptr++)
{
if (*ptr >= ’A’ && *ptr <= ’Z’)
continue;
printf("%c\n", *ptr);
}
MDRIV3
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