Tenchi O Kurau Psx Iso Converter
Three key points: Every vita below 3.67 CANNOT be activated. Every new Vita outside of JP comes with. We've now got several methods of playing PS1 games, and each has various downsides despite the efforts it took to allow them. Starting with the most relevant, Adrenaline's co-opting of the native Vita emulator of the PS1 is a really good solution for a huge amount of games. A downside is that without POPS (which is incompatible) or some method of editing playback, many games don't work or have a large array of bugs. My Bible Module Schlachter 2000 Bibel. The second method is Retro Arch's PS1 emulation under (I believe) PCSX-R. This is the most compatible yet suffers slowdown in more complex games.
Tenchi wo Kurau II - Sekiheki no Tatakai is the Playstation conversion of the arcade machine of the same name released by Capcom in the year 1992. Tenchi wo Kurau II, which uses the manga Tenchi wo Kurau (based on the Romance of the Three Kingdoms story) as the background, and also the sequel of Dynasty Wars. Download Tenchi O Kurau II • Playstation (PSX) Isos @ The Iso Zone • The Ultimate Retro Gaming Resource.
You'll never find issue booting games, though. However, temperamental ISO mounting means that the VITA shouldn't leave the application or go into sleep mode. Doing so causes 'disc read errors' as far as the game software is concerned. For the second problem, if you're patient there's a workaround: you savestate, reboot retroarch, boot the emulation again, and loadstate.
A pretty decent inconvenience to me, but hopefully the reader finds that advice useful. TLDR: Adrenaline is considerably buggy, but full speed. Retroarch is less buggy, slower, and needs reloading if you want to take a break. My intention isn't to denigrate any dev (from the scene or at SONY) for their hard work, just to inform. I've been spending a bit of time looking into the PS1 emulation on the Vita. Following ARK and Adrenaline I figured out at a high level how they achieve PS1 emulation.
In short, ARK uses some form of witchcraft to use the PSP version of POPS (judging from the settings menu system being similar to the PSP version) Adrenaline leverages what I believe is the native Vita POPS (again, system menu system matches that of the Vita PS1 emulation). Rapid Racer is my game of choice (known as Turbo Prop Racer in the US) it was my fav game when I got my PS1, so it's my benchmark game. On the PSP, POPSloader 4.01 plays the game perfect, but any version above it, graphics glitch and CDDA audio is broken.
Now, ARK can run Rapid Racer, however the framerate basically sucks, no sound but it's playable at half the speed, plus there are still gfx issues. This suggests to me that it's using (most likely) PSP 6.61 POPS, however, ARK POPS.prx does not match POPS.prx that of what comes with PSP 6.61. So I can't figure out where ARK POPS comes from or how it actually works other than it must be running as an emulation (likely reason for poor performance) or some sort of port.
Meanwhile, Adrenaline runs the game at full speed + audio, but it gfx glitches. TheFlow mentioned that compatibility is based on PSP 6.61 as that is likely what the Vita POPS was ported from. The way I see it, it means the awesome POPSloader that we had on the PSP is not likely possible on the Vita being that it's coded for the MIPS processor on the PSP as opposed to the ARM Processor of the Vita. Ideally what needs to happen is that someone essentially needs to port each version of PSP POPS to the Vita to create a similar POPSloader app on the Vita. These are just my observations, I could be (likely be) wrong, but I spent more time than I should trying to understand this. I'm no coder or reverse engineering genius, but really, as TheFlow said, we are stuck with the PS1 emu that Sony built for us.
Hacking world, here is your challenge. Do you accept? It's coded for the MIPS processor on the PSP as opposed to the ARM Processor of the Vita. The VITA has the PSP MIPS processor on the board which it uses to emulate PSP. I believe that it uses the PSP processor in order to emulate the PS1 as well, for efficiency sake (it'd be a lot of effort for little difference, right?) I think that you'd need to build a new POPSLoader, based on what TheFlow says, but there's no porting between systems. Those are my estimations, anyway, the rest of what you said is valuable information for other users.