The interpreter setting enables the Interpreter for CPU emulation. The Interpreter is a very slow type of emulation and mostly useful for debug, but should work anywhere.

In practice however the PSP is likely to give you several different kinds of "Format failed" errors. Ultimate Ghouls´n´Ghosts: doesnt let me start the game at all, keeps hanging in a warning "SaveState corrupt. Do you want to start without saving?". It does not matter if i choose Yes or No...the warning keeps looping.

Update your PSP Firmware . Before you begin, make sure your PSP is running the latest firmware version 6.61. If your PSP is able to connect to the internet, you can update it over the internet by selecting System Update in the Settings menu. Otherwise, use the following steps to update your PSP: The PPSSPP core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded. Buffered mode renders graphics close to what is in the actual PSP, with all the effects and with the least possible bugs. I have personally confirmed mixing and matching of MicroSD cards of different sizes and speeds (although they were all the same brand - SanDisk). For instance I installed a 64 GB with a 16 GB to get ~72 GB (after format) of usable storage. The PhotoFast link includes some information about spotting fakes - but the thing is these days pretty much everything is a fake - or at least not a "name brand." This isn't all bad news though because the genuine CR-5400 cards can't even support MicroSD cards above 32 GB. So if you want to build a card with more than 64 GB of memory you need to find another (no-name) brand.

Try a different CFW (though I doubt it will make a difference as long as both support high capacity).With all the cards (again, with the exception of #1) I was able to achieve a 2 x 64 GB cards (using the process described below). After you manually create this folder structure on your PSP drive which has been successfully re-formated via the PC tools you should be good to go in using this card in your PSP.

In some cases Direct3D 11 may offer better performance than OpenGL, especially on integrated Intel graphics. Core options ¶ If however you can't get the PSP to recognize the card with all space you will likely need to get a hold of another adapter, MicroSD card, or possibly CFW. If you had a "Format completed" message on your PSP and #1 above is true you can likely stop here and just start using the card.

If you get a "Format completed." you are likely good to go - though you should read through the next sections to ensure that your card really is setup properly. You may find after reading all the information presented here that you have no need to go beyond ~200, ~400, or ~500 GB in size based on other usability factors I will discuss below. While you can technically create any size card from 1GB to 2TB, most people will be looking to create something 64 GB or higher. For what it is worth #5 would be my recommendation. This is because it was of a decent build quality and seemed to give the most consistent and reliable formatting results (more on that below).

The ONLY thing of importance is that after the format the PSP can see your inserted memory card with all the available space that was formatted!!! Unzip the contents of the "PSP 6.61 Pro" custom firmware folder and copy the contents to the Game folder. After many tests I decided that it was unlikely I was going to ever get a clean format on anything over 128 GB. After reading rsn8887's thread above and seeing that he encountered the same issues I did I gave in to the fact that I probably have to rely on Windows to properly format the cards.The next identifying feature is card slot shape. This is highlighted with the red rectangle in card #1 (the *genuine* PhotoFast card). Cards either have the rounded slot shape of #1 or the jagged shape of all the others. As I haven't tested any other cards with jagged slots I can't definitively say which type of cards might be better on any given trait. The below has all been validated on this device running currently running 6.61 ME 2.3, though the vast majority of this should work on all of the standard PSP models using ME or PRO. There is a bit more detail below regarding FW versions (which are really beyond the scope of this guide).