The upshot is that I've gone back to MAME OSX. I found that more of my roms failed to play under OpenEmu than MAME OSX, after making the preferences correction identified by vickerrrs in an earlier post. In fairness, most games have only one joystick and fewer than six buttons, so OpenEmu should be fine. I tried crazy climber, which has two joysticks in the arcade version, and it just can't be played because the controls can't be mapped under OpenEmu.

That works well enough for simple games like pac man or galaxian, which use a joystick and maybe a button or two, but arcade games that have complex controls might not be playable on OpenEmu. The mappings you choose apply to all games. OpenEmu only allows you to map the following: left, right, up, down, and buttons 1 through 6. Instead of double-clicking the App to open it, locate OpenEmu in your Applications list, hold down the Control key on your keyboard and then click OpenEmu. zip file and drag the App to your Applications folder to install it. MAME OSX allows you to map each of the arcade game's controls to your own controller. Here’s how you can play MAME ROMs on your Mac To get started, download OpenEmu. The area where OpenEmu fails to match MAME OSX is in the control mappings.

No more using the tab key to get to the game control mappings as in MAME OSX. OpenEmu starts right up and has a fully graphical interface. (The regular OpenEmu build appears to emulate home consoles only.) OpenEmu even downloaded the mame 'core' when it determined the core was not installed. Make sure you install the 'Experimental' build or you will lack support for mame. OpenEmu installs seamlessly - just download it and place the app in your Applications folder. I tried OpenEmu as suggested by vickerrrs.

Mame mac os