NeoGeo games "raster irq enable/disable" at F1 press

AndersHP

Hi y'all.

Running an Amiga emulator primarily to play pinball games I need F1 and F2 buttons to choose between 1P and 2P games. This means that my Y button for Player 2 is mapped to F1.

However, this results in some NeoGeo games (like In The Hunt) that a "raster irq" enables and disables at every buttonpress..

Where do I change this hotkey to some other button than F1? I couldn't find anything in the retroarch.cfg files.

barbudreadmon

@AndersHP Well, "in the hunt" is not a neogeo game, but whatever.
With you not mentioning at all the emulators you are using, i have a hard time making sense of your issue tbh (are you even using libretro/retroarch cores for those systems ? i would expect the standalone amiberry to be the recommended amiga emulator, and the mame libretro cores to not allow disabling raster irq this way).
Or are you saying you are playing neogeo on amiga ? Is there a neogeo emulator on amiga ? Why would it run an irem m92 game though ? O_o

AndersHP

@barbudreadmon
This topic is so old, but I had my arcade stowed away for a while but my issue remains the same.

Everything is libretro, but the reason for my button to be mapped to F1 has to do with some Amiga games.
Nonetheless, the question is; when playing libretro based emulators, is there a way to make "raster iqr enable/disable" button NOT be hotkeyed to F1?

barbudreadmon

@andershp said in NeoGeo games "raster irq enable/disable" at F1 press:

is there a way to make "raster iqr enable/disable" button NOT be hotkeyed to F1?

I don't know what emulator you are using since you still refuse to mention it, but you probably should use an emulator with sane default mapping, like FBNeo (which won't have any key mapped to weird stuff like that).

AndersHP

@barbudreadmon
I was confusing the fact that it's developed by the Metal Slug guys with NeoGeo. The ROM I'm having this issue with, is emulated via lr-mame2003

barbudreadmon

@andershp said in NeoGeo games "raster irq enable/disable" at F1 press:

lr-mame2003

Maybe @mahoneyt944 can give you some hints. Note that i don't think mame had proper video emulation for irem m92 back in 2003.

mahoneyt944

You'll have to better describe the issue, here's the mapping I see:

AndersHP

@mahoneyt944
Hmm how to describe it better...
When I press F1 I get the onscreen message:
"Raster IRQ Enabled" and "Raster IRQ Disabled" again and again.

I guess there's a system command to toggle raster IRQ on/off by pressing F1. And the question is if there's a way to use, say, map F10 to do this instead...?

barbudreadmon

@andershp My 2 cents here : i mentioned it above, many mame games - iirc including several irem boards - had broken raster effects (advanced gfx effects, shadows and transparency are the most well-known of them) back in 2003, and i think that F1 key is probably some kind of leftover debug key.
I think mame osd has some menu item to remap "system keys" or something of the likes, that's probably where you need to unmap this F1. Yet, imho you should probably avoid using mame2003 for games that have known issues which were fixed since then, except if your device can't keep up with the fixed emulation (that might be the case here if you are using an old pi model, raster effects are usually demanding).

AndersHP

@barbudreadmon
Thanks, I will search inside the menus or otherwise change rom and emulator to FBNeo for this particular game.

barbudreadmon

@andershp fwiw, i tested this in mame2003+ (i don't have mame2003), F1 was indeed mapped to that "toggle raster effects" thingy, and i couldn't find a way to disable this key, so i think it's hardcoded somewhere in mame's code and impossible to remap.

mahoneyt944

@barbudreadmon yes just did some digging on this. Looks like this is our culprit

https://github.com/libretro/mame2003-libretro/blob/67288881c05f67d808646d6838043ca815f5535e/src/vidhrdw/m92_vidhrdw.c#L591-L608

mahoneyt944

One solution is to use core options and set the input interface to retropad. Using simultaneous or keyboard will allow f1 to be used.

I'll review the code and other instances like it to see if a better solution is available

mahoneyt944

Ok, issue is fixed. Update mame2003 specifying "from source" to get the fix.

barbudreadmon

@mahoneyt944 hmmm i saw your commit, imho you should have turned this into a core option or something, here you are basically dropping support for devices that don't have the specs to run those games with rasters, and i think one of the main reasons for using mame2003 is its friendliness for lower spec devices

mahoneyt944

@barbudreadmon there's no documentation for this feature for any user to know to use it unless they reviewed the source..... Which is very problematic. Similar code throughout the core uses debug for these types of things currently. At some point I'd like to comb through the debug actions and standardize them in a way that's easier but for now..... I just wanted to get it working.

AndersHP

@mahoneyt944
Ok I tried but the version of RetroPie that I'm running is 4.3, and it requested me to update to 4.4.
I'm on a Pi 3B+ so I've been reluctant to update everything but tried the Setup Script and now it will not even enter the RetroPie Setup menu... Gives me all sorts of messages like
Err http://mirrordirector.raspbian.org/raspbian/ jesse/main ... 404 not found etc.

But every systemupdate begins with fetching the newest RetroPie Setup script, right?

AndersHP

@mahoneyt944 @barbudreadmon
By the way, really appreciate you guys digging into this - thanks!

mahoneyt944

@andershp you can update emulators without updating everything else. Go into RetroPie setup, Manage packages, manage main packages, find mame2003, update from source. This will take about 25 mins or so.

sleve_mcdichael

@andershp said in NeoGeo games "raster irq enable/disable" at F1 press:

I'm on a Pi 3B+ so I've been reluctant to update everything but tried the Setup Script and now it will not even enter the RetroPie Setup menu... Gives me all sorts of messages like
Err http://mirrordirector.raspbian.org/raspbian/ jesse/main ... 404 not found etc.

But every systemupdate begins with fetching the newest RetroPie Setup script, right?

Your system (Jessie) is wildly out of date. We are two OSes ahead (first Stretch, then Buster. Bullseye is right around the corner, maybe.)

Unfortunately, you cannot update through the setup script. In fact you cannot even update in-situ at all. You need to backup your roms, bios, configs, and splashscreens dirs, and install the latest official image from RetroPie.org.uk/download, then you can restore your backed-up directories and you'll be basically right back where you were, but with a current and supported configuration.