Hacking PSP Retro Emulators

Clydefrosch

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hello,
would anyone be able to give me ou gpsp kais (latest version) folder structure?

i dont really know why but ever since I updated my emulators a few weeks back, every savestate and config file ends up in the same folder as the eboot is saved in, not in the config or save folders.

i guess I must've messed things up at some point and now i just dont get it right anymore.
 

Metoroid0

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hello,
would anyone be able to give me ou gpsp kais (latest version) folder structure?

i dont really know why but ever since I updated my emulators a few weeks back, every savestate and config file ends up in the same folder as the eboot is saved in, not in the config or save folders.

i guess I must've messed things up at some point and now i just dont get it right anymore.

What version of GBA kai you have?​
I have (and recommend, it has fixes i guess and Cheatsfor GBA games),​
i have "UO gpsp kai 3.5mod" ("UO" stands for "Unofficial")​
-First of all, you put your "gPSP Kai" folder in: Ms0:/PSP/Game/gPSP Kai
Inside "gPSP Kai" folder, i have 3 folders: cfg, GBA, font... and some other folders.​
Here, i played a little with Paint and made you this,​
so you could better understand folder structure.​
(This is my folder structure from (i don't know if it's the latest, but i'm guessing
it's the same as any other Kai) from )​
M4799DW.png

And you can always restart "gPSP Kai" by deleting "game_config.txt" file inside "gPSP Kai" folder. :)
Hope i helped.​
 

TecXero

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A quick google search brought me there to, but that's why i ask, because it sucks..it cant even start properly.
It probably got dropped in its early stages of development, would be my guess. Generally niche emulators like that don't get much attention and get dropped quickly. Same with the WonderSwan emulators. I'll check it out once I get the chance, but for the moment, that's what I assumed happened.
 

Metoroid0

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It probably got dropped in its early stages of development, would be my guess. Generally niche emulators like that don't get much attention and get dropped quickly. Same with the WonderSwan emulators. I'll check it out once I get the chance, but for the moment, that's what I assumed happened.

Yeah well, i dont really understand since PSP is a great console..why are people so turn off to translate JPN roms, make proper and ton of Homebrew games, apps (taht actually looks nice)... it seems that DS got all their atention..not fair! :(

For example "Evangelion: JO" looks freaking avesome! and no one wants to translate it..i dont get it, and its pissing me of..it's pissing me off so much that i started to learn programming and japanese :P
 

TecXero

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Yeah well, i dont really understand since PSP is a great console..why are people so turn off to translate JPN roms, make proper and ton of Homebrew games, apps (taht actually looks nice)... it seems that DS got all their atention..not fair! :(

For example "Evangelion: JO" looks freaking avesome! and no one wants to translate it..i dont get it, and its pissing me of..it's pissing me off so much that i started to learn programming and japanese :P
The interest in the PSP was there for quite a while, just wasn't the interest in the PSP and VMU/WonderSwan/etc niche emulators. I'm brushing up on my coding as well and intend to revive a couple of open source PSP homebrew applications that I rather enjoyed back in the Dark Alex days.
 

Metoroid0

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The interest in the PSP was there for quite a while, just wasn't the interest in the PSP and VMU/WonderSwan/etc niche emulators. I'm brushing up on my coding as well and intend to revive a couple of open source PSP homebrew applications that I rather enjoyed back in the Dark Alex days.

did you made some aplications for psp?
 

Metoroid0

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No, but there are some old homebrew I'd like to update and try to improve. I don't really want to mention them, though, cause I don't want to get people's expectations up. I have no clue if I'll succeed.

hehe ok. you can tell me in inbox if you like to, i would love to know..and i wont get mad for not living to my expectations..i mean i'm an artist, i know how you feel. :)
By the way, how do you do that updating..i'm just learning co use C++ so a little advice and talk with someone experienced would be nice. ^^
 

codezer0

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As someone that's tried - and repeatedly - failed to be able to get any build of mame to agree with a given romset... I suppose I can ask.

What would be the recommended build/romset to get for a good variety of games to play that works on the PSP? I just know that famously I have tried the few that I knew of and despite even having the GP2X MAME ROMset (mostly for the Supercard DStwo emulator package), the PSP MAME seems to fail to recognize almost all of it. After trying several builds I almost always only see maybe about 5 or 6 out of 2000 or so different game builds. :( I might be doing something wrong or missing a step, but honestly I am doing what I think should work, and it isn't.

On another, I remember that way back I had downloaded a couple packages of MVSPSP and CPS1/2PSP emulators, which seem to be done by the same guy(s). No complaints on their performance, although annoyingly, I do notice that especially with the MVS games, if I try to set them up for freeplay (either that or the CPS2 games), it will insist on resetting the game... but the setting never takes. I recall reading somewhere that these emulators were updated, but since then I can't find the release notes or the download link(s) anywhere. :(
 

VGA

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As someone that's tried - and repeatedly - failed to be able to get any build of mame to agree with a given romset... I suppose I can ask.

What would be the recommended build/romset to get for a good variety of games to play that works on the PSP? I just know that famously I have tried the few that I knew of and despite even having the GP2X MAME ROMset (mostly for the Supercard DStwo emulator package), the PSP MAME seems to fail to recognize almost all of it. After trying several builds I almost always only see maybe about 5 or 6 out of 2000 or so different game builds. :( I might be doing something wrong or missing a step, but honestly I am doing what I think should work, and it isn't.

On another, I remember that way back I had downloaded a couple packages of MVSPSP and CPS1/2PSP emulators, which seem to be done by the same guy(s). No complaints on their performance, although annoyingly, I do notice that especially with the MVS games, if I try to set them up for freeplay (either that or the CPS2 games), it will insist on resetting the game... but the setting never takes. I recall reading somewhere that these emulators were updated, but since then I can't find the release notes or the download link(s) anywhere. :(
I don't care about MAME but as for your second question, I think the latest official release is :
http://psx-scene.com/forums/content/njemu-cps1psp-cps2psp-nddzpsp-mvspsp-v2-3-5-4251/

There are also unofficial forks of versions 2.3.1 it seems:
http://wololo.net/talk/viewtopic.php?f=47&t=27733&start=10
 

Truner

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So, how do I get Nazo no Murasame-jou running on PSP? I tried several different NesterJ variants (with fds bios included) and a few GBA emulators to run the game.

The NES emulators wouldn't even recognize the rom, while the GBA version would give me an error screen even after I patched it. I know I'm doing something wrong, I just don't know what.
 

TecXero

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So, how do I get Nazo no Murasame-jou running on PSP? I tried several different NesterJ variants (with fds bios included) and a few GBA emulators to run the game.

The NES emulators wouldn't even recognize the rom, while the GBA version would give me an error screen even after I patched it. I know I'm doing something wrong, I just don't know what.
What is the extension on the NES ROM? It should be .nes, but NesterJ can also handle compressed ROMs in a ZIP file, but make sure there are no other directories or files in the ZIP file. Also, have you tried other games under your build of NesterJ?
 

Truner

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What is the extension on the NES ROM? It should be .nes, but NesterJ can also handle compressed ROMs in a ZIP file, but make sure there are no other directories or files in the ZIP file. Also, have you tried other games under your build of NesterJ?

It's a .fds file, but that should not be a problem. I've played Famicom Disk System games before. The version of NesterJ I used back then has been deleted, but I know it worked. Also, regular NES roms load in this.

At this point, I'd be happier to get past the Cartridge Error screen in the Famicom Mini version. At least that one loads.
 

TecXero

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It's a .fds file, but that should not be a problem. I've played Famicom Disk System games before. The version of NesterJ I used back then has been deleted, but I know it worked. Also, regular NES roms load in this.

At this point, I'd be happier to get past the Cartridge Error screen in the Famicom Mini version. At least that one loads.
Ah, sorry, I can't help. I don't own any Famicom Disk System games. I do believe NesterJ needs a Famicom Disk System BIOS for those games, though, but you probably already have that. I can't really think of anything else.
 

Truner

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Ah, sorry, I can't help. I don't own any Famicom Disk System games. I do believe NesterJ needs a Famicom Disk System BIOS for those games, though, but you probably already have that. I can't really think of anything else.
Yup, I have the disksys in there, as well as two FDS bios' in .nes format and I even grabbed an fds.dll (as suggested by a YouTube video). For some reason, it doesn't want to work. I know it should, but it doesn't.
 

Hargrun

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Yeah well, i dont really understand since PSP is a great console..why are people so turn off to translate JPN roms, make proper and ton of Homebrew games, apps (taht actually looks nice)... it seems that DS got all their atention..not fair! :(

For example "Evangelion: JO" looks freaking avesome! and no one wants to translate it..i dont get it, and its pissing me of..it's pissing me off so much that i started to learn programming and japanese :P
Are you guys interested? http://www.libretro.com/index.php/retroarch-going-all-psp-psp-version-for-next-release/

Sounds promising to me.
 

TecXero

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Yup, I have the disksys in there, as well as two FDS bios' in .nes format and I even grabbed an fds.dll (as suggested by a YouTube video). For some reason, it doesn't want to work. I know it should, but it doesn't.
Seems a bit odd for a PSP program to use a Windows library. Also, I do believe the readme says it needs the bios to be named disksys.rom or something like that for it to use it.
 

Truner

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Seems a bit odd for a PSP program to use a Windows library. Also, I do believe the readme says it needs the bios to be named disksys.rom or something like that for it to use it.
Yes, I also thought it was weird, but it didn't hurt to add it. Also yeah, I had the bios named properly. The emulator can check if the bios is correct and it said it was.

That said, I played through the FDS version on PC a day or two ago and am now playing the GBA version. While I probably won't be in a rush to play these on my PSP, I think it would be nice to figure out how to get FDS emulation properly done. Maybe for the wiki or something.
 

Clydefrosch

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Would someone happen to know why e's "Emulator v0.82f" isn't giving me any sound (irregardless of sound setting) or full screen or full speed gameplay?
i'm using a pspgo.
I've seen videos of the emulator running pretty much full speed with sound and full screen, but its somehow not working for me. changing options in the menue doesnt seem to have any effect at all which is weird.
i have a vague memory of playing the wonderswan one piece game on my old psp with sound too, but I dont have it available to try anymore.
so if anyone knows what could cause this, thanks in advance
 

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