A bit of a YSK for noobs (like me).
I was setting up the RG35XX-SP with Knulli last night. They have an excellent little tool in the menus for checking for any missing bios files for the emulators. A few of the files I couldn't find anywhere, but I had similar (but not exactly) named files. For example, a DS emulation bios I was missing was dsi_bios7.bin but I had biosdsi7.bin.
Amazingly, the (I guess Batocera) developers include an 'MD5' hash of the required files in the message with each file name, so I was able to confirm these are actually the same files. eg for the file dsi_bios7.bin the MD5 was given as 559dae4ea78eb9d67702c56c1d791e81.
If you're not a software developer, you might not be familiar with hashes. They are basically a big number computed from every byte in a file such that if two files have the same hash, for practical purposes, the files are exactly the same.
To find the MD5 of a file in mac or Linux you just type md5 <filename> in the terminal (ed: md5sum <filename> on Linux - thanks @[email protected] ), or for little files like these, just drop them in an online MD5 calculator.
Not sure if it's different on Mac or other distros, but for me on Linux Mint it's actually
md5sum <filename>. Surprisingly, that wasn't a listed suggestion when tryingmd5 --help- just offers 'mdp, mda, cd5, mdu' to install with apt.My bad - thanks for the correction!