I don't speak Russian, but I know good RE work when I see it.
The big parts have been black-boxed already - my own console had an Xplorer cartridge running Caetla at the time the PS1 was big! - but it'd be nice to see what actually really goes on inside, say, the SPU, or the GPU's actual handling of a few corner cases. PS1 emulators are already very good (indeed, they can even run the specially copy-protected images without any patches now, as I tried a couple of months ago with a couple of rare games), but those last few percent are the hardest.
I saw MAME mentioned, and that makes sense, given the attention to detail.
When I saw "translate.google.com" in the URL, for some reason I had a feeling it was going to be in Russian... I don't know if it's a cultural thing for Russians to be reverse-engineers, but there certainly seem to be a lot of them.
This reminds me of http://breaknes.com/info , which judging from the style of the diagrams might be done by the same person. There's been a ton of transistor-level RE on the NES, but I hadn't seen it done for the PS1 until now. The level of attention to detail is amazing. It's also interesting that they're using Logisim, which is often regarded as a "toy"-level/educational logic simulator (it has some pretty limiting features that make it rather unsuitable for real diagrammatic logic design.)
The big parts have been black-boxed already - my own console had an Xplorer cartridge running Caetla at the time the PS1 was big! - but it'd be nice to see what actually really goes on inside, say, the SPU, or the GPU's actual handling of a few corner cases. PS1 emulators are already very good (indeed, they can even run the specially copy-protected images without any patches now, as I tried a couple of months ago with a couple of rare games), but those last few percent are the hardest.
I saw MAME mentioned, and that makes sense, given the attention to detail.