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MAME
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==How to==
===Convert Bin/Cue files to CHD===
Many emulators other than MAME are beginning to support Compressed Hunks of Data, mainly because compared to the alternatives, it offers compression (or ''better'' compression) on all fronts. [[Libretro]] is making an initiative to support them thanks to a successful bounties initiative, and in many cores such as their [[Mednafen|Beetle]] fork, they've begun rolling it out for certain platforms like Saturn and PlayStation , so people can test it.
If you're interested in trying it out for yourself, this guide will show you how to convert to the format using MAME's command-line tool called <code>chdman</code>. We'll warn you now that you will need to know how to use either a Unix shell or the command prompt in order to use it. The developers of MAME seemingly don't have plans to give <code>chdman</code> an interface , so if the thought of going back to the DOS days scares you too much, you may have to wait.
{| class="mw-collapsible mw-collapsed wikitable" style="width: 100%;"
:''Note: If you're confident, you can delete files immediately instead of sending them to the recycle bin or trash bin using the keyboard shortcut <code>Shift</code> + <code>Delete</code>. Always back up the files if you're worried you might do it wrong.''
MAME keeps a database of romsets including what each file should be named. If the ROM dump is obtained through a ZIP file, you can uncompress the files inside and transfer them to a 7-Zip file for better compression. The 7-Zip archive HAS to have the exact same name (not the same file extension , obviously).
In case you're wondering why 7-Zip is supported in MAME and not RAR, it's because the LZMA development kit that's developed alongside 7-Zip is in the public domain, and the MAME team uses it for CHDs along with FLAC for audio and data compression; RAR is a proprietary format that can only be decompressed by 7-Zip, not compressed to, as per an agreement with both development teams.
