where should i put the chd files on mame 2003 plus?

mitu

Check the .chd file's hash - if it's not the correct file you'd get the same 'not found' message from the emulator. Verify the checksum for arcade/area51mx/area51mx.chd against the source.

ciaolo

@mitu it isn't the same. Why? I downloaded a romset

Retro Arcade Fan

@ciaolo May not have been from a good source. Or wasn't put together correctly. Unfortunately, it's against forum rules to ask for roms so nobody can tell you anything else as far as that goes.

ciaolo

@Retro-Arcade-Fan I downloaded lot of different area51mx.chd files. They all have different md5

ciaolo

@mitu I checked again and the sha1 is correct. I was using the wrong software for verify.

mitu

@ciaolo Then I don't understand why it's not working. The location - as indicated so far - is correct.
Are you sure the permissions are ok on the file ? Can you run - from the command line -

ls -l $HOME/RetroPie/roms/arcade/area51*

and post the output ?

ciaolo

@mitu This is the output:

/home/pi/RetroPie/roms/arcade/area51:
total 530044
-rw-r--r-- 1 pi pi 5427557759 Feb 29 202 area51.chd

/home/pi/RetroPie/roms/arcade/area51mx:
total 1735572
-rw-r--r-- 1 pi pi 1777220045 Feb 29 2020 area51mx.chd

mitu

Sorry, but I don't know what the issue might be. I can start the game fine with the following files:

ls -l $HOME/RetroPie/roms/arcade/area51*
-rw-r--r-- 1 pi pi 306827 May 15 17:04 /home/pi/RetroPie/roms/arcade/area51mx.zip

/home/pi/RetroPie/roms/arcade/area51mx:
total 1735572
-rw-r--r-- 1 pi pi 1777220045 May 18 15:47 area51mx.chd

I haven't run a checksum on the .chd, but the size matches up your listing. Curiously, your listing doesn't show the .zip ROMset file, but your initial log file did list it.

The only differences I see - comparing the debug logs - is that I don't have either a core override or a content folder override for the core. You may try to rename those to see if they have an impact.

...
[INFO] [Environ]: GET_LED_INTERFACE.
[INFO] [Environ]: SET_CONTROLLER_INFO.
[libretro INFO] [MAME 2003+] Opening ROM file: area51mx.3h
[libretro INFO] [MAME 2003+] read_rom_data: All done
[libretro INFO] [MAME 2003+] Opening ROM file: area51mx.3p
[libretro INFO] [MAME 2003+] read_rom_data: All done
[libretro INFO] [MAME 2003+] Opening ROM file: area51mx.3m
[libretro INFO] [MAME 2003+] read_rom_data: All done
[libretro INFO] [MAME 2003+] Opening ROM file: area51mx.3k
[libretro INFO] [MAME 2003+] read_rom_data: All done
[libretro INFO] [MAME 2003+] Opening disk image: area51mx.chd
[libretro INFO] [MAME 2003+] Opening differencing image: area51mx.dif
[libretro INFO] [MAME 2003+] Creating differencing image: area51mx.dif
[libretro INFO] [MAME 2003+] Opening new differencing image: area51mx.dif
[libretro INFO] [MAME 2003+] Succesfully loaded ROMs.
[INFO] [Environ]: SET_ROTATION: 0
[libretro INFO] [MAME 2003+] RetroArch will perform the rotation.
...
...

ciaolo

@mitu i tried with calspeed and it says "unsupported chd version"

mitu

@ciaolo That means you're using a .chd produced by a later version of MAME's chdman, which is not supported by Mame2003-Plus. You'll need a .chd compatible with Mame2003-plus, just like the rest of the files (zip romsets) used by the emulator.

ciaolo

@mitu yes, thank you. I finally found a good romset.