Mess System Bios Roms Mame Emulator

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I’m trying to consolidate as many emulators as possible into Retroarch. I’m trying to use Mame/Mess core and for example the GX4000 which to my knowledge does not require bios files. Dell dimension c521 bios. My roms are named to no intro standards, that being said they run fine when ran through Rocketlauncher launching stand alone mess/mame. But RA doesn’t see them (.cpr). So I can’t launch them. If I change them to Bin files they work but then the mess/Mame core isn’t listed as an optional core to run the content. What needs to be done here to run them as is? Microsoft virtual pc xpmuser password windows xp.

For gx4000 the file is here: • Place the hash file into your retroarch system/BIOS directory in the mame/hash folder or mess2014/hash folder. The path to the file would be: path_to_system_directory/mame/hash/gx4000.xml or path_to_system_directory/mess2014/hash/gx4000.xml • Get the MAME softlist romset for GX4000. Save the zip files into a folder on your computer named gx4000. The folder needs to be named exactly, since the core is looking for this folder name. It would be something like: path_to_rom_files/gx4000/batman.zip • In Retroarch, browse to the folder and launch the zipfile with MAME (latest) or MESS2014 (or you can launch it from the command line). In practice, I’ve actually found MESS2014 to work with less glitches than the latest MAME core.
I have tried to get cmd files to work but in vain. I tried some examples: Example 1: • batman.zip is in /Games/gx4000/batman.zip • batman.cmd is in /Games/gx4000/batman.cmd • cmd file contains gx4000 -cart /Games/gx4000/batman.zip • Launch the game with batman.cmd works. (However, I think the core is just parsing the names and doesn’t even look at the cmd file) Example 2: • batman.zip is in /Games/test/batman.zip • batman.cmd is in /Games/test/batman.cmd • cmd file contains gx4000 -cart /Games/test/batman.zip • Launch the game with batman.cmd fails. Example 3: • batman.zip is renamed to batmanb.zip, placed in /Games/gx4000/batmanb.zip • batman.cmd is in /Games/gx4000/batman.cmd • cmd file contains gx4000 -cart /Games/gx4000/batmanb.zip • Launch the game with batman.cmd fails. It seems like the core requires the folder name and filename to be exactly correct no matter what.
Is there some cmd file magic that I’m missing? This is a few examples from my setup (on Ubuntu using RA as frontend for this) kof98wh.cmd: aes kof98ice -rp '/Games/retroarch/mame/roms/neogeo' using the cmd file to run neo-geo hacks gets edited a lot. Private-parts.cmd: c64 -flop '/Games/Romz/Commodore/c64/private-parts.d64' -rp '/Games/Romz/MESS/Bios' Used to run c64 demos downloaded from (the -rp is rompath since my rom organization is currently messy) redhat.cmd: at486 -harddisk '/Games/Romz/MESS/Software/at486/Redhat3.0.3.chd' -rp '/Games/Romz/MESS/Bios' Powered by, best viewed with JavaScript enabled.