Ok, this is how you can extract 1st_read.bin for this introed game (and for some other from Eurasia) :
1) find "RNC ProPack" (DON'T ASK ME FOR IT). You'll find it on google, or any other search tool.
2) hex edit introed 1st_read.bin, and delete all bytes from the beginning to the ones before the string "RNC" (i.e. you must keep "RNC"). Save the file (say "myfile.bin").
3) now run RNC Propack on this new file (dos command : "ppibm u myfile.bin").
4) hex edit the uncompressed file and look for the second "Lib Handle Start". Delete every bytes from the beginnig of the file to the first bytes "09 00 09 00" just before the second "Lib Handle Start" (offset 70728 in Golf Shyouyo 2). Save the file.
Now, you've got an uncompressed and "introed" bin file, BUT the intro won't play (because we removed the code that jumps to it) ! So you can use it if you want to boot some games (I used the intro part to boot Border Down, but I'll let you guess how).
If you want to get the proper 1st_read.bin for Golf Shiyouyo 2, you can delete the code for the intro :
5) hex edit your file and look for loads of "FF FF FF FF" hexa values (you can't miss them, there are about 1.700.000 of them !). Delete every bytes from the first "FF" hexa value to the end of your file. Save it.
Now, you've got the original and working 1st_read.bin for Golf Shiyouyo !
Consider this post is my tutorial to deintro files compressed with "RNC" code. Some games need more hacking before they can work properly. This code from Eurasia is very "powerfull". I got some games to boot thanks to it.
I won't answer obvious questions. If you can't follow these instructions, I won't help you : I think Eurasia and other groups deserve our respect.
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