@ParanoidAndroid one thing's for sure: he is more than welcome to join us here in the forums. If you have any contact, please ask him to register.

@mitu FIXED!!! this is what i've done so far for everyone that want to know how i fixed it. i've made a .bat file inside the emulator root folder with the code you said (also .cmd doesn't work, it needs to be .bat) cd /d "%~dp0" //%~dp0 search where the .bat is located. that's why i put it on model 2 emulator root folder Emulator.exe %~1 if you want absolute rute just put cd /d d:\RETROCAKE\Emulators\M2emulator Emulator.exe %~1 (remember to put your emulator path, don't copypaste) on es_systems.cfg you put this <system> <name>Model 2</name> <fullname>Sega Model 2</fullname> <path>**ROM PATH**</path> <extension>.zip .ZIP</extension> <command>**emulator path**\**bat name**.bat %BASENAME%</command> </system> if you have roms in other folder, put them on emulator.ini Dir1: *//path of the roms* also make sure that this Dir and the es_system.cfg dir is the same Thank you all, you can close it if you want :D EDIT: One problem i had with this method is that when you press ESC button to exit, it goes windowed instead of closing. so i've made an .ahk script for closing Model 2 and .bat file when pressing ESC. Keep in mind that you need Autohotkey on your PC. you can launch it with the cmd command Esc:: { Winclose, ahk_exe Emulator_multicpu.exe Winclose, ahk_exe Emulator.exe Winclose, ahk_exe cmd.exe ExitApp } (keep in mind that if you open cmd for whatever reason with autohotkey enable, pressing ESC will close it) if you want to add autohotkey to the .bat file, put this after the model 2 code: cd /d "%~dp0"/AutoHotkey tasklist /nh /fi "imagename eq AutoHotkey.exe" | find /i "AutoHotkey.exe" > nul ||(start AutoHotkey.exe) pause This will open it the first time and if it's already open, it will don't open again

Thanks for the replies gents- I'm in the UK so it would be to far to post. I will have a think... on which way to go. One thing I didn't check are the new classic nes and mega drive variants the same and on Usb?

@johnodon the extra / is not an issue, issue here is that the core doesn't retrieve the path to your system directory (if it did, it wouldn't try to create this /home/pi/RetroPie/roms/arcade/dc/data directory). My only guess is that there is something wrong with your retroarch configuration/overrides for this core/game (system_directory should be set to ~/RetroPie/BIOS, systemfiles_in_content_dir should be set to false). If you can't figure out what's wrong in your configuration files, a quick and dirty fix would be to create the /home/pi/RetroPie/roms/arcade/dc/data manually, you'll probably have to put system files in /home/pi/RetroPie/roms/arcade/dc too. Also, make sure the core is up to date.

you can't really make these comparisons. atoms and p4s are likely still faster than a single core rpi3 (remember that emulators are almost always single core, and that ARM is way less performant than x86 per MHz, in most scenarios), and ancient versions of emulators were more hacky than 'HLE'. things like ultraHLE (n64) would run on a toaster, but they were barely 'emulators' at that early stage. even today's HLE emulation is vastly more accurate, but needs more juice. i don't see anyone spending a whole load of time making a hacky model 2 emulator targeted at raspberry pis. by the time they were finished it would be redundant.

Thanks for your reply, Thak! If I were to try lightgun solutions on the Pi, I'd use a Wiimote + gunmod + this: https://www.amazon.com/Mayflash-W010-Wireless-Sensor-DolphinBar/dp/B00HZWEB74 Then again... We might try House of the Dead 1 and 2, Daytona, Virtua On and many others via the emulation of their (lower quality) PC ports.