Newbie questions (CHDs, BIOS, AW)

Hello there. I'm a newbie to DCEmul and I have a few questions.

1) What are *exactly* the BIOS files needed? Note that I'm not asking where to get them, just the name of the files and what they do. Right now I have a DC.ZIP for DC emulation and I've copied all BIOS files from MAME to the ROMs folder, but I still get missing file errors her and there.

2) For Naomi / Naomi2 emulation, I'm using romsets + CHD from Mame. Are they supported? Where I'm expected to place the CHDs? I've followed a guide from another website to convert the CHDs to BINs using a Mame Developer's version, but that doesn't seem to work.

3) Are AW games playable? I've tried a couple, and they make it to demo, but then I can't insert coin(s) to play, despite having configured the JAMMA controller.

4) Can I have a RomCenter datfile for this emu? The one at Logiqx is outdated, and I want to see if my romsets are 100% compatible.

Alright, then, how do I decrypt / encrypt those CHDs and what do I do with the resulting files?

BTW, #3 solved, apparently I didn't notice there's a separate menu to configure AW controllers. Duh

#2 solved, learned how to convert CHDs with a debug mame version. All you have to do is load the game in mame, then rename the ENCRYPTED_WHATEVER file created in the mame folder as WATHEVER.BIN and add it to the zipfile.

I guess some of these questions were already answered in the phorum, but I didn't know where to start. You should make sure stuff like this is on the top of the phorum at all times.

There are two kinds of Naomi games, those which came in carts and those which came in GD-ROM, Naomi's take on the CD-ROM.

With the ones that come in carts, there's nothing to worry about. MAME versions will do, and you'll be able to tell them apart because they're pretty big in size.

GD-ROM versions are a bigger pain in the arse. Usually the MAME version consists of a very small (bytes size) ZIP plus a CHD. You need both files and a debug version of MAME, found on their website. Once you've run the game under MAME, you'll end up with a couple of files in its folder, encrypted.bin and decrypted.bin.
You need to rename encrypted.bin as nameofset.bin, then place it inside that small ZIP I mentioned earlier, the one that has the name of the set and it's only a few bytes.

Then you can use that game under Demul. My advice would be to stick to cart versions until the other sets become more widespread.

Can this convert between Demul and Makaron formats?

OK, thanks for the quick answer. I've been fiddling with Makaron these days, but Naomi games are hard to find. Just thought it would be faster to just convert some of my Demul set, because I already deleted the ROM+CHD stuff. No need to keep those, I thought, because after all they're not playable in MAME.

Thanks anyway, that utility of yours sounds awesome.

If it's just for me, don't do it. I've already settled for Demul when it comes to Naomi emulation. But if other people want it and / or request it... go for it.