I don't have anything helpful to add, but the LICENSES.TXT file included with the game indicates these compression routines were used:Sorry for the bump, but has there been any progress on this, I noticed the Ratalaika games that use emulation have this file, and I'm trying to figure out how to get the rom files.
Sharing links to ROMs are forbidden. They aren't even hard to find if you do a quick search.Is there a link to the file / game, I will happily have a go at getting the roms out
apologies and have found them, was been lazy but the extension file is an odd one to extract from thats for sureSharing links to ROMs are forbidden. They aren't even hard to find if you do a quick search.
Sent u a PM. Also, have you already tried these?apologies and have found them, was been lazy but the extension file is an odd one to extract from thats for sure
I don't have anything helpful to add, but the LICENSES.TXT file included with the game indicates these compression routines were used:
■lz4 (https://github.com/lz4/lz4)
■lz4hc (https://github.com/lz4/lz4)
■zlib (https://github.com/cloudflare/zlib)
At least you're onto something there. Thx for the effort so far!The other problem is that I have zero coding skills and definitely don't know ARM64, but I can tinker.
So a disassembly of the EXEFS definitely references the file and most likely steps through the decompression. I just can't do anything with it:
View attachment 357694
And futher down inside that sub_7100201960 under the /roms and /roms.zak reference. It clearly deals with what happens if the roms.zak file is empty/has no compressed components. But like I said, I can read the text, but zero ability to make sense of what is actually going on:
View attachment 357695
Nice. Wish you luck!That is probably a better way to look at it, just wondering if the switch locks of certain access when a gam is in play, but when I am on my next day off I will have a look into doing it that way
The ROMs can be extracted from RAM in an emulator like Yuzu or Ryujinx, but some exhibit significant graphical corruption PC emulators for the respective systems. Therefore, it's difficult to say if RAM dumps are the same as the raw ROMs in the zak archive or, due to how they are stored in memory, that they're non-original.Nice. Wish you luck!
I found extracting the rooms from pc emulators don’t like to be installed afterwards as they say the room is corrupt but maybe worth a shot as I couldn‘t find a way of decompressing them when I tried yesterday, closest I got was with scummy tools but they just come across stumbling blocks when trying to extract, and not got the time at the moment to look into the coding aspect of it as much as I would like tooThe ROMs can be extracted from RAM in an emulator like Yuzu or Ryujinx, but some exhibit significant graphical corruption PC emulators for the respective systems. Therefore, it's difficult to say if RAM dumps are the same as the raw ROMs in the zak archive or, due to how they are stored in memory, that they're non-original.
To me, this means decompressing the zak archive is the only way to be sure what files were originally packed to see if they are compatible with physical hardware or if they have been somehow modified to run on the Switch emulator but ended up being non-hardware compatible.
I'm sorry, but no matter how much research I did, I couldn't figure it out.Sorry for the bump, but has there been any progress on this, I noticed the Ratalaika games that use emulation have this file, and I'm trying to figure out how to get the rom files.
Thanks for the useful info!I found extracting the rooms from pc emulators don’t like to be installed afterwards as they say the room is corrupt but maybe worth a shot as I couldn‘t find a way of decompressing them when I tried yesterday, closest I got was with scummy tools but they just come across stumbling blocks when trying to extract, and not got the time at the moment to look into the coding aspect of it as much as I would like too
Thanks for the useful info!The ROMs can be extracted from RAM in an emulator like Yuzu or Ryujinx, but some exhibit significant graphical corruption PC emulators for the respective systems. Therefore, it's difficult to say if RAM dumps are the same as the raw ROMs in the zak archive or, due to how they are stored in memory, that they're non-original.
To me, this means decompressing the zak archive is the only way to be sure what files were originally packed to see if they are compatible with physical hardware or if they have been somehow modified to run on the Switch emulator but ended up being non-hardware compatible.