lr-gpsp giving "Illegal Instruction" on Raspberry Pi models 0W, 3B and 4.

BuZz

@masterjule I don't think gpsp will be fast enough on your system anyway. I will look into it when I have a chance but I think you need at least an rpi2 for GBA.

TechieAndroid

I also have started having this problem since I updated. Maybe a previous package version for lr-gpsp would work if there is one. I'll be looking into a workaround until an actual fix is found.

@BuZz said in lr-gpsp giving "Illegal Instruction" on Raspberry Pi models 0W, 3B and 4.:

@masterjule I don't think gpsp will be fast enough on your system anyway. I will look into it when I have a chance but I think you need at least an rpi2 for GBA.

I know for a fact that before, it would run gba games at full speed. I tested it myself.

mitu

@TechieAndroid What system are you running ? From what I've tested, it's not the emulator version that's the problem, but the compiler used to produce the binary - the one distributed with Raspbian Buster.

BuZz

I'm currently looking into this btw (to avoid duplicate efforts)

TechieAndroid

@mitu Pi 0 W with the latest version of RetroArch.

TechieAndroid

@mitu said in lr-gpsp giving "Illegal Instruction" on Raspberry Pi models 0W, 3B and 4.:

@TechieAndroid From what I've tested, it's not the emulator version that's the problem, but the compiler used to produce the binary - the one distributed with Raspbian Buster.

I see. So when I tried compiling it I ran out of memory on my Pi 0 W. Then I tried compiling it in Arch with make TARGET=PI1 and then I replaced the binary with the one in /opt/retropie/libretrocores/lr-gpsp/ however it didn't change anything either.

So I've been looking over the GitHub page and the maintainer hasn't provided much detail for compilation on various hardware. Do you know what compilation flags I might try on my computer to make it work on the Pi? I was basically guessing earlier.

Retro-Dee

Compiling the code with the mentioned methods doesn't work in any way, you end up receiving "Illegal Instruction".
What I did to temporarily solve this problem is to use a previous build of the gpsp_libretro.so binary and just as expected, it works!

xgaia

@Retro-Dee can we have this old build ?

juchong

Hi folks, here's the 4.5 binary: https://github.com/libretro/gpsp/issues/71#issuecomment-633748977

To install, unzip the file and transfer gpsp_libretro.so to your Pi. Replace the file in /opt/retropie/libretrocores/lr-gpsp/ with the version I've posted. Be sure to set the file permissions to 755 by issuing this command: sudo chmod 755 /opt/retropie/libretrocores/lr-gpsp/gpsp_libretro.so

Hope this helps!

BuZz

I did look into this btw but need to revisit. Using older GCC on buster still caused the issue so need to debug further with gdb.

TechieAndroid

I can confirm that the older working version still runs at full speed. So that's nice.

I'm going to install Arch on one of my Pi 0 W's and compile the latest lr-gpsp binary, I'll post it as soon as I can.

Lhimo

Is the binary working on Pi0W as well? I can't get it to launch.

oscarw

Replacing the core worked... for a while. As soon as I started playing Shrek 2 it restarted after a while of playing. Switching back to lr-mgba it fixed that problem. But lr-mgba is super slow on Pi0W so that is not an option. Does anyone have any suggestion to way it keeps restarting?

losingteam85

@juchong I tried getting in through WinSCP and overwriting the old gpsp_libreto.sp , but the system said "Permission Denied Error Code 3." Have you seen this, and do you know how I can give myself permission? Thanks!

mitu

@losingteam85 Using an old version shouldn't be needed anymore, try to update and use the latest lr-gpsp.

losingteam85

@mitu I was able to update from source, tried it, restarted my system again, and still lr-gpsp won't load my GBA roms. I'm still getting the "line 1255: 2706 Illegal instruction" problem. The games do seem to work in lr-mgba. Not sure what's up. Thanks for your help!

mitu

@losingteam85 Try updating RetroPie-Setup first, then install again from source.

losingteam85

@mitu That worked, thanks!

bebeidon

@mitu Hi, I hope it's appropriate to answer to this post.
I'm using a Pi 0 with Retropie Version 4.5.1 on Stretch.
lr-gpsp runs well for most games but some like Mario Golf restart after a short time (I think this is related to the BIOS). I have the gba bios in the BIOS folder and it's recognized by mGBA too.
So I figured I try to fix it by updating (first the Retropie-Setup Script, then the emulator).
Now the performance of lr-gpsp is very bad and the problem is still present.
Is this fixable on Stretch? i don't want the new image because the cheevos badges look bad on the little screen.

mitu

@bebeidon said in lr-gpsp giving "Illegal Instruction" on Raspberry Pi models 0W, 3B and 4.:

Is this fixable on Stretch? i don't want the new image because the cheevos badges look bad on the little screen.

Not sure what the problem is on Stretch (this topic is about lr-gpsp on the new release, based on Buster), but Stretch it's no longer supported, unfortunately. What do you mean by the cheevos 'looking bad' - is it the new notification style in RetroArch ? You can turn them off or use the previous notification style I think.