Interesting, I want to eventually translate the Saikano PS2 game in the future but am unsure on how to do so. With a dissaembler, could you get the games Graphics or stuff like that. It's good to see someone with experience on PS2 hacking, the games is mostly .DAT files and a long time ago I tried to figure out how to open them but failed.
I have some experience with unpacking, check my posts, I am trying to transalte a Ps2 gamemyself and have done quitesome progress. Now all I need a transalator. I can take a look at those .DAT files, if you want.Btw you have a translator? Or you speak Japanese?
Forgot to answer your question. No , you can't get graphics with a dissabmler, becuase all it does is that it show the MIPS ASM. You can however search for string (englidh mostly( and this only appiles to the XX.XX file. The only image/grphic that you will find in a offical PS2 game, in its Sxx.XX file is that logo that comes from the dics , when it boots, the "PlayStation 2" one.
You see you have a confussion becuase you are probly used to SNES, NES hackoing where there is only one file and it is small and you probably think the same thing about the PS2 , you maybe consider the ISO to be the whole game but it is not. The iso contains other data.
You will ALWAYS find a SYSTEM.CNF there,)that opens in text editor and the BOOT2 line shows the SXX.XX which is the file that will be booted. THink of that file as the main exe and the other files as datas and drivers. Remember that you are dealing with the first game copnsloe which used DVD media.