NES music way too fast

[naddel81]

Isn't there an option to switch between PAL/NTSC in retroarch? I cannot find it unfortunately :(

[BuZz]

you can control framerate in retroarch. Timing will depend on the emulator I guess (but I don't know I'm afraid).

You could ask here - http://libretro.com/forums/forum.php there have been some other threads related to this also if you do a search.

[naddel81]

Tried everything now. but NES emulation seems to be too fast. Unfortunately libretro forums do not allow to post. I tried three different registrations. none has gotten an activation mail :(

even tried to reactivate my old account.

[naddel81]

Fixed it by renaming the roms to (E) at the end. strange!

This info should be stickied.

Are there other systems as lazy as the NES emulators for retropie? I mean: Getting the region out of the filename? Why not use the header info to be on the safe side?

[BuZz]

I have edited https://github.com/RetroPie/RetroPie-Setup/wiki/Nintendo-Entertainment-System with the info - feel free to add information like this to the wiki.

I answered the question regarding filename in the other thread.

[naddel81]

thanks! will do!

do you know if SNES and mega drive are also affected by this?

[BuZz]

I don't.

[naddel81]

OK, will try and let you know. but I guess the SNES/mega drive emulators check their headers carefully.

[naddel81]

before I go to sleep I wanted to test the (E) issue on again. and what can I say: despite your google findings every emulator I tested does not care about the file name, but takes the header info.
even nestopia works fine without the (E). how come the same emulator does not work the same way on retropie?

[BuZz]

please list actual versions and be less vague. eg. are you talking about retroarch on another platform or standalone emulators?

[naddel81]

I was testing the standalone versions on pc.

[BuZz]

That's not the same emulator. The libretro one is based on nestopia but may deal with this differently.

[Rion]

I dont know if this is the same issue but if I'm not mistaken there was an early release from no-intro this year where the nes archive did not contain headers. The latest no-intro from september fixes this and there where a hotfix applied later to the same release from 2016-01-03.

Anyway.

No-intro from 2016-01-03

Every NES rom seems be headerless and won't run in most emulators.

Edit: No-Intro 2016-09-06 is the latest.

[naddel81]

thanks to both of you.

@ BuZz: good to know. I thought because of the name (nestopia) they were the same and wondered why the PC version had a totally different behaviour.

@Rion: What is "no-intro"? Is this a release group or something like that? my roms have a header, but the emulator in retroarch does not care. it clearly only checks the filename for region.

[windale]

This is one of the silliest things i've heard. The emulator checks the filename for the region ? So what happens if the filename is this 'Donkey Kong Classics (USA, Europe)' ?. What does the emulator choose, PAL or NTSC ?

[naddel81]

good question. I couldn't believe it myself until I checked it very accurately. I hope it is "only" the case for NES and not for all the other emulators, because I would have to re-tag my whole collection. I do not understand why the emulator can not just check the rom-header.

[BuZz]

@naddel81 I explained that in the other thread you started with a link. The info in the old nes ROM header is rarely used - I assume they chose to check against the filename because of this.

Some dumps don't contain a header and some newer emulators don't need it. Headers are required for the emulators shipped with RetroPie however.

[BuZz]

@windale (from the other thread)

https://wiki.nesdev.com/w/index.php/INES#Flags_9

Though in the official specification, very few emulators honor this bit as virtually no ROM images in circulation make use of it.

so I guess the filename is just more reliable - and I assume there is no other way of knowing, unless an emulator kept an internal database of rom checksums vs region etc.

[windale]

So I just checked this. I use a up-to-date No-Intro 1G1R set, primarily USA with Europe exclusives etc. My TV is set on 60Hz. I tested the following on the RetroPie default NES emulator 'lr-fceumm'.

Dropzone (Europe)
Lion King, The (Europe)
Mr. Gimmick (Europe)
Contra (USA)
Donkey Kong Classics (USA, Europe)

They all play at the correct speed.

[BuZz]

It checks for "Europe" in the name too

https://github.com/libretro/libretro-fceumm/blob/a8fcbf1410aeccb9c29907874a5ed33cfda87ed9/src/ines.c#L797-L802