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Mame Chds 0 119 In Roms Up

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Shanelle Ryals

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Dec 22, 2023, 8:23:35 AM12/22/23
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Any other words of wisdom? Im updating my 8tb launchbox drive..... Been at it for days starting from scratch on my ssd and leaving rom files on the hdd. Im almost done setting up all my consoles and need to tackle arcade stuff next. I see alot of talk lately about teknoparrot. Are the games teknoparrot runs stuff that is in the chd set or completely seperate roms ill have to find?



Mame chds 0 119 in roms up

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LB does not care about the CHD, only Mame does. LB just tells mame the name of the rom file to launch. Most of the games in Mame require the zipped rom to launch the game and the CHD supports it. There are a few exceptions that are CHD only games like Golden Tee Fore 2005 and 2006.


I know how to make everything work. I have successfully setup hyperspin with mame, nes, dreamcast, etc... in the past. Now I have lost my Rom sets due to failed HDDs and am having to re-obtain them from internet sources. Legality aside, one of the best places to obtain such stuff has you download CHDs and roms separately. That is the part that befuddles me


I'm pretty familiar with emulation, but why are Mame CHDs separate from the roms be it merged sets or otherwise? I mean, I understand logistically, the roms are binary backups of a game system's eprom/(whatever type of flash rom) data and the CHD is a (compressed?) hard drive image from the HDD in the cab. Why then have the files (zips & CHDs) in separate folders, and as separate downloads? You need both the play the games right?


TL;DR - Merged-sets/De-Duplication, plus re-dumps/revisoning of rom zips make it infeasible/inefficient to store CHDs with their respective roms and to distribute them together. Revision management is made WAAAAAY simpler by separating them though they are still functionally dependent on one another.


Hey everyone,



I know there are many topics in this forum dealing with how to proberly import a complete mame set. However, even though I have read many of these threads, I still haven't found a definitive answer.



I have one merged mame rom set and one corresponding set of CHDs. Now, If I wan to import the complete set into launchbox, where would I put the CHD files? I have never dealt with mame CHDs before, so I'm really unsure about this. Here are some of my questions:



1. Do I create a different folder for the CHD files within the mame rom folder? That would put the CHD folder next to all the zipped roms.

2. Or do I create a paret folder called "mame" and then within that folder, one folder for the "roms" and one folder for the "CHDs"?

3. Or do the zipped CHD files go into the same folder as the zipped rom files?

4. Do I have to unzip the CHDs or should I leave them in their 7zip format?

5. If I unzip them, should I put them all in the same folder or should I leave the CHDs in a folder which has the same name as the zip file?

6. Should I import the roms first and the CHDs second or do I just point the launchbox importer to the complete folder and let it do its magic?



As you can see, I am confused. It would be reallly helpful if someone told me a simple way to import the complete set (roms and CHDs).



Thank you so much for your help!!!


by default MAME expects the CHD in the format that Neil showed you to be inside the ROMs folder. I personally things the ROMs folder is already over crowded so I keep those files in their own CHD folder and then just point MAME to that secondary location in the mame.ini file.






Actually with the "MAME fullset importer" its also not importing the rom files. It knows what games currently are marked as working in MAME and imports them. All it does is pass the game name to MAME essentially, so as long as MAME knows where your roms and your CHD's are, then they load.


Actually in that case im not sure. Any reason for using retroarch for MAME? i use retroarch for as many systems as i can, but i avoid it for MAME, i have just had way to many controller issues with it. For me retroarch and the mame core itself seem to fight over controls, and it never works right.


I use Retroarch, because it works just fine. I have multiple displays and I can't seem to get Mame standalone working with my setup. It's a weird issue where mame seems to launch on whichever of my three displays it wants to. There is no consistency. Since I've switched to retroarch, there hasn't been any issue whatsoever.


Yeah, I've tinkered with these settings, but for some reason, windows switches up which of my displays is labeled as 1, 2 & 3. So whenever I restart, these numbers might be switched and then if I set mame to launche on display 2, this could be whichever. So, I'd like to stick to retroarch.



But I've just realized that the retroarch core in mame doesn't seem to use an ini file for it's arcade games... Besides, mame doesn't allow me to set the chd path in it's ini even in the standalone version...


Hello one and all.

I am accostumed to regular console emulators but I am trying to understand MAME because of the great selection of roms, I am only looking for a selection of roms I'm interested in (it is not few roms but it is not all of them, mostly because I am subject to limited HD storage space right now). I understand the difference between merged(all localizations of one game in a zip), non-merged(every localisation a zip with all required ROM files) and split (one localisation has everything, all other are clones and require it to function) so I go for split and I use _mame.php to find out which are the parent roms and their required CHD/BIOS files. Even after learning all of this I am unable to find a complete database of CHDS/BIOS/ROMs from which I can pick out all of the files for the games I need. I joined here to try and solve that problem.


I saw that there are 2 sections for MAME 0224 right now, regular and full. but I also notcied there are less roms on the full version, I also noticed the CHD folders have very few files available. This all seems very counter intuitive but I suppose this is because most of you are chasing fully updating your already complete romset to the latest version (therefore you only need a few new roms/bios/chds), but I only want a guaranteeed fully working partial selection of roms on ANY version of mame.



TLDR:Are there full sets of bios+chds+roms available anywhere on this site (where?) or is it just meant to update already working full romsets?


Keep also in mind that this "full"-folder will be updated when a new MAME Version is released. If you need "older" versions of roms it maybe not fit anymore ....(for this you need roms from the rollback folder)


Hello again... Yesterday I was able to download a few romsets. until a point where I was asked again my user/pass, and even though I keep entering the same info (hasn't changed), it keeps asking user/pass over and over again...


What other files are in the roms folder? I assume in your standalone MAME roms folder you also have all the bios files. Make sure RetroArch can also see those files. Basically, a game may need 3 files to run, the rom, the CHD and the bios.


I've downloaded MAME by using apt-get install mame command on my Debian Linux. The installation process went smoothly and I did the right setup afterwards. I've acquired several ROM files including 'Street Fighter III 3rd Strike', 'Street Fighter II': Champion Edition', 'The King of Fighters '97', etc and put them in the rom folder which was specified correctly in the mame.ini file.


I can see the entries for those ROM files once I started MAME (without a GUI frontend as I started MAME in xterm), but when I select any one of the ROMs, I got the same error message. The neogeo.zip file (Neo Geo ROM for MAME) is in my roms folder.


Note that MAME is very picky about ROM file names - they must match exactly what MAME expects them to be. If you've renamed the files, or they downloaded with the wrong names, you'll need to fix them. mame -listfull can tell you the game name and the expected ROM name that matches, although you'll probably want to pipe this to grep or similar due to the large number of supported ROMs.

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