MD+/Msu games are here!

Lisko
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MD+/Msu games are here!

Unread post by Lisko »

Hi all, Krikzz the man behind everdrives was working on his own way to make normal mega drive cart games enjoy red book hi-fi quality audio. Instead of basing his work on proprietary APIs like md+, he developed a nice tiny driver which makes interfacing with the Sega CD hardware easier and all using official bios calls. This means that these hacks could run on official unmodified hardware and on mister too. If you download the latest os for mega everdrive pro you will find inside ips patches that you can apply to unmodified .md roms and then put the modified rom, named cart.rom, inside a folder along with cue/bins/wav and load it thru megacd core. I personally tested with streets of rage 2 and it is working fine. Thanks to krikzz and all the mister developers that made this possible! I also hope that thanks to this more of these hacks will be done.
mario64
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Re: MD+/Msu games are here!

Unread post by mario64 »

Golden Axe is freezing regardless if using v1.0 or v1.1 and even with a corrected cue file. I've opened a ticket on this. So far the other games seem to be working. It's possible that MiSTer code may be tied closely to Pier Solar so some tweaks could be necessary to get all MSU-MD games working.

EDIT: Found the problem with Golden Axe MSU-MD on MiSTer. Discussed with the original author Relikk. This game's cue file requires a dummy track 10 entry in order to work properly in emulators and MiSTer. Here is a link to a working cue https://drive.google.com/file/d/1vOV6jW ... sp=sharing
Lisko
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Re: MD+/Msu games are here!

Unread post by Lisko »

I also noticed that sometimes streets of rage 2 freeze on black screen until reset.
mario64
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Re: MD+/Msu games are here!

Unread post by mario64 »

Interesting. Perhaps there are other factors involved. I didn't have any more problems with Golden Axe using the new cue sheet but haven't tested SoR much
Mr^O^BIG
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Re: MD+/Msu games are here!

Unread post by Mr^O^BIG »

That's nice, thanks for the news

Mr BIG
pcfreak324
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Re: MD+/Msu games are here!

Unread post by pcfreak324 »

In case you didn't know, the audio packs for the games can be downloaded from here: https://www.zeldix.net/f66-md-hacks-database
Lisko
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Re: MD+/Msu games are here!

Unread post by Lisko »

Krikzz also released a mega cd test bios/cart to see how actually accurate the hardware is based on his findings. Mister has some errors about registers and then hangs on cdc init. Who knows if sorge is aware of this and if can help the work of the core's developers
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bootsector
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Re: MD+/Msu games are here!

Unread post by bootsector »

Lisko wrote: Sat Jul 11, 2020 2:10 pm Krikzz also released a mega cd test bios/cart to see how actually accurate the hardware is based on his findings. Mister has some errors about registers and then hangs on cdc init. Who knows if sorge is aware of this and if can help the work of the core's developers
I actually think you should open an issue on github for this!
Shaneus
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Re: MD+/Msu games are here!

Unread post by Shaneus »

I wish I knew how the conversion/patching for these worked, there's an MD+ version of Rock n Roll Racing with real music but doesn't seem to be on anyone's radar.
mario64
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Re: MD+/Msu games are here!

Unread post by mario64 »

It would be great if MiSTer supported fade & loop for MD+ / MSU tracks like Mega SD and MED Pro. :)
Lisko
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Re: MD+/Msu games are here!

Unread post by Lisko »

mario64 wrote: Fri Jul 17, 2020 2:02 am It would be great if MiSTer supported fade & loop for MD+ / MSU tracks like Mega SD and MED Pro. :)
Yeah, it's also strange because msu-md driver should run fine on original hardware. Maybe the mister core has some bugs preventing fade and loop from working? I think and hope that test bios can be helpful for devs in making a hardware accurate mega cd.
mario64
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Re: MD+/Msu games are here!

Unread post by mario64 »

Submitted a formal enhancement request for this. https://github.com/MiSTer-devel/MegaCD_MiSTer/issues/52
hiddenbyleaves
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Re: MD+/Msu games are here!

Unread post by hiddenbyleaves »

So do MD+ games not work at the moment? I tried a few and they just bring me to the SegaCD audio player.
pcfreak324
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Re: MD+/Msu games are here!

Unread post by pcfreak324 »

hiddenbyleaves wrote: Sat Nov 21, 2020 6:00 pm So do MD+ games not work at the moment? I tried a few and they just bring me to the SegaCD audio player.
Did you read the readme? It says that you need to place the cartridge dump named cart.rom into the game's folder.
hiddenbyleaves
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Re: MD+/Msu games are here!

Unread post by hiddenbyleaves »

Hello there, thanks for replying :)

Where do I find this readme?

So in the Moonwalker folder I have a .md file and a .cue file and the music files. So I rename the .md file to cart.rom?
hiddenbyleaves
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Re: MD+/Msu games are here!

Unread post by hiddenbyleaves »

Ok I named the Moonwalker.md file to cart.rom and now it loads the game but there are only sound effects and no music :(
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