Cyvern Problems

Novabug

I'm aware this has been discussed before, but I cannot find the solution.

I cannot get Cyvern the Dragon Weapons to launch. I have tried many methods, and it will not work. Examples I have tried would be Mame 2003plus, 2003, 2010 Advmame several versions. FPa... and 7 romsets with 2 Skns bios's. I've been looking for the Advmame version which works with advmame 1.4 So I hear.... but no luck. Anybody have any advice on this?

Retropie 4.8
Pi 3b+

YFZdude

@Novabug
Are you using the official RetroPie image from this site?
Do you know for which emulator is your romset intended?

For example:
I tried this rom cyvern.zip from the MAME2003 reference set on my Pi 3B+ with Retropie 4.8 just now using MAME2003 and it works for me just fine.

Here are the checksums for the files in my rom zip.

CRC32             Size  Name
-------- -------------  ------------
DDC8C67E       4194304  cv200-00.u16
A6CB3F0B       4194304  cv101-00.u20
7486BF3A       4194304  cv210-00.u18
F8A0FBDD       1048576  cvj-odd.u8
802FADB4       1048576  cvj-even.u10
CD4AE88A       4194304  cv100-00.u24
65863321       4194304  cv201-00.u13
FBEDA465       4194304  cv300-00.u4
7E2B836C        524288  sknsj1.u10
-------- -------------  ------------

This same romset should work in MAME2003, MAME2003 Plus, and MAME2010 since all those reference sets have the same files and checksums.

barbudreadmon

@Novabug said in Cyvern Problems:

but no luck

Picking romsets/emulators combination at random is indeed just relying on luck, you should follow the documentation instead : https://retropie.org.uk/docs/Validating%2C-Rebuilding%2C-and-Filtering-ROM-Collections/

While language might not be very important on shmups, note that the US version of this game was only dumped back in 2011, earlier versions of mame can't run it. The emulation of that game also had tile priority (meaning gfx) issues until 2008.

Novabug

@YFZdude That set I have, but for some reason will not work. I newer version wont run on older mames.

YFZdude

@Novabug said in Cyvern Problems:

I newer version wont run on older mames.

Well, as @barbudreadmon mentioned, you do need to match the emulator and romset you try to use. They won't work if you mix them. Decide which emulator you want to use, then find the rom for it from the romset meant for that emulator.

Did you install Retropie yourself?
If so, what method did you use to install it?

mahoneyt944

Ah yes, I see the commit here

https://github.com/libretro/mame2015-libretro/commit/02b0e179390fb8fb78106759fed7a5b91a8f6741

Wonder if this could be used in mame2003+, how noticable are these priority issues? I'm unfamiliar with this game.

@arcadez2003 thoughts?

barbudreadmon

@mahoneyt944 said in Cyvern Problems:

how noticable are these priority issues? I'm unfamiliar with this game.

Not sure, i only learnt about this old bug while checking if the game had many dump revision. Furthermore i only played it in FinalBurn which i think never suffered from this.

The train is mentioned in that commit, so i'd suppose it might be affected by this problem.