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What do I need to download for mame .251 complete set?


BIGT

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I am a super noob.  What do i need to import a rom set for mame .251.  I have a torrent and got the " full rom set merged for .251"  which was about 40 to 60 gig, can't remember size. Now I am downloading some giant 900 and some gig file that is a "CHD" fileset or something like that?  Which do I need and do I need both.  

Edited by BIGT
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Your merged set has more-than-enough games (ROMs) that can be played.  

Some of those ROMs require a CHD (Compressed Hunks of Data [yes, that's the actual name]) file as well.  For simplicity, think of a CHD as a CD 'game disc'.  There are about 660 CHD's.  Excluding clones (Japan version, US version etc.), there are 371.  Of those 371, only 58 are considered "Working" in MAME.  (note, some of the non-working CHD's may work with other emulators. But don't count on that being the case)

If HDD space is not an issue, just place all the CHD folders in the same directory your ROMs are located and you should be good to go.

An example of a game that requires a CHD is Area 51.  

../Games/Arcade/area51.zip
../Games/Arcade/area51/area51.chd

 

Use the Arcade Full Set Import Wizard tool to import them.  When you get to the filter section, if you decide to not use games that require CHD, you can check the option to exclude those. Note the 1st checkbox  option will skip the games unplayable in MAME.  So for the ones requiring CHD's, it'll whittle down what's imported into LaunchBox to those approx. 58 (plus all the working arcade games that don't require CHD's).

image.thumb.png.29527fbd0bfd57feaf8395cac87a383f.png

 

Note that LaunchBox doesn't touch your ROMs at all during the import process.  So if your Games folder has 40,000 ROMs and after import you have 14,000 games in LaunchBox (depending on your selected filters), you'll still have the full 40,000 ROMs in that folder.

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37 minutes ago, tallpr24 said:

hello,

I know you had provided .bat file that would actually move those roms for you.  can you provide that here?  i would like to have those roms only , and remove the ones that launchbox is ignoring to save hard drive space.

I don't recall the batch file for that.  Also, you'd have to know exactly which ROMs you have imported into LaunchBox. And it would ONLY work with a non-merged set.  You'd break games if you have a merged or split set.

But better than a batch file, and still ONLY if you have a non-merged set, you can move the ROM files from within LaunchBox for the imported games. Then delete the remaining ROMs that didn't get moved.

Select all games in Arcade, then go to Tools, File Management, Export/Copy ROM files from Selected Games to New Folder

 

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37 minutes ago, tallpr24 said:

so import them but select move to launchbox instead of leave in current folder? 

No, Use the mame fullset importer and choose the options you want, once everything is imported you can then use the tool to export the games to another folder. The initial import these days does not look at or touch your actual files, it just want the location where they are stored.

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i got them all to work, but now i have new issue with this new rom set.  

keep in mind all i did was change my rom set from old .78 to a new set (.251) some of the roms in mame, lots of them from Capcom, but there are others, have a cracking really bad sound when i Launch them.  i read some where to check refresh rates and audio latency, but all that checks out, and i use other cores for all legacy systems like nes and genesis and many others.  its seems to be happening only with the mame cores in retroarch.

any one know how to fix the sound issues in retroarch mame ?

 

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