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How to use mame bios files with emulator software#
How to use mame bios files with emulator code#

so that we might launch it with another emulator! If we try and launch a game with no filepath in an emulator that's not a MAME emulator, it will never work, yet there are many cases where we might want to open a rom the MAME team has collected with some other emulator.

So, why might we want to also point to a filepath for these printed romdatas? There are two reasons: Of course we can use the (non-softlist) MAME Emulators we found during an EFind scan to try and run any Rom and any romdata in QuickPlay, so its entirely possible to pass MAME filepaths, but when we print off things from the MAME XML, every single game described by the MAME team is given a 'mamename', so we don't need this. This is the same for arcade or home computers/consoles.

How to use mame bios files with emulator code#

When QuickPlay calls MAME (or MAME-in-RetroArch), it doesn't 'need' filepaths: it calls 'mame.exe mamename' where mamename is a code the mame team made up to launch a particular game with ('bublbobl' for the game 'Bubble Bobble' for instance).

Now you understand how that works, let's think about what happens when you load a MAME game from QuickPlay

So once these romdata files are printed, no more interaction with MAME happens until you actually play games. If you want to change anything in them, its easiest to just delete them, change some option, and print all of them again (you will lose any customisations you made to the romdatas though, if in doubt, diff them) These romdatas are 'printed', once, in QuickPlays data folder as romdata.dat files and displayed in QuickPlay.

How to use mame bios files with emulator software#

You then tell QuickPlay to print a set of Arcade Romdata files and/or a set of Software List Romdata files, and QuickPlay uses that file it made when it scanned the MAME XML. Read on for why you might want it:īefore we start, it helps to understand how the MAME functionality in QuickPlay works - so i'll try and explain how everything gets printed one-time upfront at first, and then remains static:įirst you scan a MAME XML as a one-off thing into QuickPlay, creating a subset of that massive file (plus info from any ini files in your mame extras folder) that QuickPlay uses to print things with. It is optional, you can just leave the filepath printing tickbox unticked and carry on. In Mame Options, there's a section 'Arcade and Softlist Path Printing Options'. Understanding the MAME Path printing option

1.4.2 I tried to run a MAME romdata game with 'parameters to run' in a non-MAME Emulator, but it didn't like the command-line args passed.

1.4.1 What is all that extra console output when the romdatas are printing if I choose to print filepaths?.

1.2 Understanding the MAME Printing Options settings.

1.1.2 Using mame.ini's rompath variable.

1 Understanding the MAME Path printing option.

They used them to store the most substantial assets of games – graphics, audio, music, animations – while keeping the smaller “core parts” of a game on the ROM chips. At some point in time, with ROM chips being expensive and games getting larger with more impressive visuals, their developers started using CDs or hard disk drives. The software part of the equation was typically stored in ROM chips. Unlike gaming consoles, arcade games usually had dedicated hardware and software that differed from game to game. In MAME, though, they are only part of the game because MAME primarily emulates arcade machines.

In the case of console emulators, CHD files usually contain the whole game, so you can “open them” in the emulator and start playing. If they are backups of games for the original PlayStation or some other console that used optical discs, they should, in most cases, be placed directly in the emulator’s ROM subdirectory. If your CHDs are MAME ROMs, they should (usually) be stored in folders with the same name under MAME’s main ROM folder.Īlso read: Are Game Emulators Legal? Everything you Need to Know