Atomiswave problems with Metal Slug 6 and KoF Neowave

DreamcastKid

@barbudreadmon said in Atomiswave problems with Metal Slug 6 and KoF Neowave:

really ? the issue is about write protection ? O_o

Yep, try it for yourself if you're skeptical ;)

I got tired of deleting the nvmem/nvmem2 files and then one day i thought, i wonder what would happen if i change the Permissions ?

I figured there was no harm in trying ... Any lo and behold it worked ! :)

FetusSandwich

@dreamcastkid That's a smart idea. I also read somewhere right after posting this to try and find the MAME roms for both games.

Low and behold, I cleaned out all of the nvmem files, replaced the roms, and both work flawlessly.

Was trying to figure out how to get the blood patch working for Metal Slug, but gave up and took my moral victory above with me.

YFZdude

@dreamcastkid
Just wondering, is this related to the VMU format/initialize mentioned here:
https://docs.libretro.com/library/flycast/#compatibility

It's the second bullet point under Compatibility.
I'm not familiar with Dreamcast stuff so I could be way off.

safesinger

@pscotto1234 Thanks, it worked great. I appreciate you posting the fix.

IGA

@pscotto1234 What about kofNW? - is it starting?

Genos98

There's another way to fix metal slug 6 freezing at the start in retropie which worked for me but it involves using retroarch on pc. Open retroarch on your pc then just boot mslug6 using flycast then it will generate the mslug6 nvram and nvram2 which can then be located in retroarch/saves. Now all you need to do is replace the ones in retropie using the ones generated by retroarch.

IGA

@genos98 could you enable red blood? (like changing mslug6.flash\sram for demul)

Genos98

@iga Never really thought about it. But the atomiswave metal slug 6 with blood mode is already available if you know where to look.

IGA

@genos98 sorry... I know only method with file substitution in nvram for demul.
For riecatst nvems i can't find those files.

Or maybe could try to open service menu by pressing combination on second controller + some on first, but I personally have never been able to do this

sirhenrythe5th

I dont have a PC, so is it possible to change the permission on the Pi itself?
Something like go to the terminal and use a command like "sudo chmod-a -rw /home/pi/roms/dreamcast/mslug6/nvram.nv"?

IGA

@sirhenrythe5th yup, but i dont have right nvram.nv with blood for MS6

sirhenrythe5th

@iga i will try to activate blood as soon as i can restart my metal slug 6 again.
I found two ways that i want to try:
Either activate the service-menu by a weird button combination, or change the parameters of the nvram with a hex-editor as shown in another forum

But first i must care about the file permission ;)
@all: would the command "sudo chmod ugo-rwx [foldername]" work?

IGA

@sirhenrythe5th I've tried wired combinations with 2 gamepads, but don't get success.
Also tried took right mslug6.flash and mslug6.sram from demul and renamed it as nvram.nv for rreicast. but don't get success too....

sirhenrythe5th

@iga i allready confirmed that the demul-files are not compatible to lr-flycast.
Give me some days, i am pretty sure that editing the nvram with a hex-editor will work.
I will upload the modified file and give you a link to download.

Dimas

@sirhenrythe5th Any progress with this (HEX editor)?
I am facing the same exact issue with these two roms and I tried with the files generated with flycast on a PC and the result is the same (i.e. still freezing at start)...