@Retro-Arcade-Fan Nevermind. Found the answer. Had to change it to c16 for some reason.

@jamrom2

@mth75 Hi. I don't mean to hijack the thread, but I really like your Plus 4 case idea. I'd love to know more about how you did it and what's running in it. I had been wanting to build another RetroPie unit (I have 3...a Sears Intellivision, an Intellivision Flashback, and a RetroFlag Megacase) but one with a bulit in keyboard. The plus 4 is perfect. Was going to use an old C64, but felt it wasn't as good. Do you have a write-up or any specs on how it all came together, including the keyboard interface you'd be willing to share? Thanks!

I read your question on the Which games ... with Wine/Box86 thread, let's start with this older topic.

Most importantly, I'm using the Keyrah (C= keyboard) interface (unavailable for a quite a while now) ...

The basics look like this:

IMG_0330 2.jpg

Self-answering: the problem with D64 files turned out to be a dodgy disk. So what you need to do to play C16/Plus 4 games in MESS is add the following lines to EMULATORS.CFG:

advmessc16prg = "/opt/retropie/emulators/advmame/bin/advmess c16 -log -cfg /opt/retropie/configs/c16/advmess.rc -quickload %ROM%" advmessc16disk = "/opt/retropie/emulators/advmame/bin/advmess c16 -log -cfg /opt/retropie/configs/c16/advmess.rc -floppydisk %ROM%" advmessplus4prg = "/opt/retropie/emulators/advmame/bin/advmess plus4 -log -cfg /opt/retropie/configs/c16/advmess.rc -quickload %ROM%" advmessplus4disk = "/opt/retropie/emulators/advmame/bin/advmess plus4 -log -cfg /opt/retropie/configs/c16/advmess.rc -floppydisk %ROM%"

Then when you boot, choose the version you want from the RUNCOMMAND menu, eg if it's a C16 PRG file choose "advmessc16prg".

Once a PRG file is loaded, just type RUN. (I find if you do it too soon you have to do it twice, so wait a couple of seconds.)

If it's a D64 file, type LOAD"",8,1, then RUN when it's done.

AdvMESS runs the games much faster and smoother than VICE, but its compatibility is quite poor, so horses for courses.

Has anyone managed to make Cartridges work for Vic-20? With Vice there is the possibility to add the -cartgeneric parameter, but I tried with lr-vice and it doesn't work.

@SpudsMcToole

If you are not satisfied with the performance, try to switch the 'Synchronisation method' to 'Flexible'. With the 'Exact' method I got only 90% and choppy sound...
Under the 'Video settings' / ' Size settings' disable 'Double size/Double scan/Full screen options' and set the 'Custom resolution' to 384x272, SDL2 will do its job.

Sorry for my poor english. ;)