@mediamogul said in Maybe a solution for NES input lag.:

@lesk said in Maybe a solution for NES input lag.:

Where and how do I enabling that, and what does that do?

The Run-ahead feature gives you the option of removing inherent frames of latency that are built in to every game past the Atari 2600. Each game can have different amount, but as mentioned above, there will always be at least one frame. Removing more frames than what is required can lead to visual and game play anomalies, such as a 'Game Over' screen appearing for as little as one frame when you haven't died. Even when anomalies aren't noticed, the timing of the game's progression is being changed to be more forgiving, making it similar to cheating with a Game Genie code. If you're looking to enable it just for the NES, you can add the following lines to /opt/retropie/configs/nes/retroarch.cfg above the #include line.

run_ahead_enabled = "true" run_ahead_frames = "1" run_ahead_secondary_instance = "true"

Thank you for the information! I'll try this when I get back from work, and only use run_ahead_frames = "1" instead of 2 ^^

@mitu It worked! Sorry for my late response!

Funnily enough I just started setting up a brand new system and had this same problem again (ironically this topic was the first thing that came up when I googled!). So for anyone that may ever need it, I did in fact write a script designed to clean up roms that don't have images :)

You can find it here on my GitHub https://github.com/andywarburton/RetroPie-Tools

Enjoy!

Great, thanks for testing this !

Can you try increasing the system's sound volume from a SSH or command line using alsamixer ? I know it sounds stupid, but maybe the default volume is too low for you to hear it.
Otherwise, you can enable verbose logging when starting a ROM with the Runcommand launch menu (https://retropie.org.uk/docs/Runcommand/#runcommand-launch-menu), play a bit, then exit and get the /dev/shm/runcommand.log file. Paste the contents of the file to pastebin.com so we can take a look at it.

@herb_fargus I see. I was going to modify the Wiki script to send a browser User-Agent with the wget download command, but in this case I better not.

@pyterj Unfortunately it seems the download site doesn't allow direct download of the games, so you'll have to find a way to install them yourself. Sorry about that - as @herb_fargus said, there is a reason this script is not included in RetroPie proper and we can't get around that.

@akafox @Lyle_JP @mitu lr-fbalpha will search the roms folder, then the BIOS/fba folder (where samples & hiscore.dat are supposed to be), then the BIOS folder. It works that way for any bios or parent rom (which means you can also store the non working parent roms needed to run some clone in the BIOS/fba folder).

@retroprogrammer
sudo apt-get update
not
sudo apt-get install update

I would make everything pbp format to save space :D

@enderandrew Hello. MAME is indeed a beast and before you begin even thinking about installing anything at all on anything, I recommend that you read read and read again. Here are some links to help you understand a bit about the MAME variants that are supported on Retropie...

https://retropie.org.uk/forum/topic/7247/guide-arcade-games-and-how-to-play-them-a-non-technical-mame-fba-tutorial

https://retropie.org.uk/forum/topic/2859/how-to-use-mame-with-retropie-help-guide

https://choccyhobnob.com/mame/demystifying-mame-roms/

Once you have read these, you should have good understanding of what you need to get. You will need to be comfortable in updating romsets over time to maintain functionality but personally, I build with the recommended emulators depending on the hardware I choose. I don't use windows so I cannot comment on that but all the links above stand true for Arcade emulation regardless.

Good Luck and....

Here is the compatibility list (second tab along the bottom)

and recommended MAME variants

...oh and there are sets with one rom / one game but come to that later - you will need to get your head around DAT files and filtering methods.

You emulators.cfg for the gba system is corrupted. It should be:

lr-mgba = "/opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-mgba/mgba_libretro.so --config /opt/retropie/configs/gba/retroarch.cfg %ROM%" default = "lr-mgba"

Replace the file with the contents I pasted above and re-try.

Please give more information about your system as requested in https://retropie.org.uk/forum/topic/3/read-this-first. Answer the question there and also specify what setting have you changes in RetroArch.

@arcuza you can't it's not a part of retroarch

Ok, I will look at starting a fresh at some point. Trouble is time!!! But thanks anyways.

@johnodon the extra / is not an issue, issue here is that the core doesn't retrieve the path to your system directory (if it did, it wouldn't try to create this /home/pi/RetroPie/roms/arcade/dc/data directory). My only guess is that there is something wrong with your retroarch configuration/overrides for this core/game (system_directory should be set to ~/RetroPie/BIOS, systemfiles_in_content_dir should be set to false).

If you can't figure out what's wrong in your configuration files, a quick and dirty fix would be to create the /home/pi/RetroPie/roms/arcade/dc/data manually, you'll probably have to put system files in /home/pi/RetroPie/roms/arcade/dc too.

Also, make sure the core is up to date.

@grant2258 You're right. My mistake was that I used mame2003 instead of mame2003-plus. That was the reason the xml wasn't generated in ../arcade/mame2003_plus where I looked first.

To access the MAME tab menu, I ran a game that I thought was using mame2003-plus, but either I changed its runcommand setting back to mame2003 in the past or an update did it. Thanks.

Well i got round to testing that as it was sat on my pi anyway i can confirm contra 4 works fine i have a us dump if its relavent and if i may suggest you could try checking your controller mappings see if shoot and hook isnt mapped to the same button by mistake you never know may have overlooked it but it is working fine infact ive just been playing it with my ps3 controller on my pi with enhanced resolution enabled(actually gives 2d games a nice crisp appearance instead of the default blurred one)