Be sure not to select the 'Unplayable' category. Select all of the categories on the left that you would like to keep by single-clicking on them.There are few settings to configure with the Multifilter.Download MAME 0.78 XML.dat and catver.ini from the MAME 2003 metadata repository (click on 'Raw' and then use your browser's 'Save As' feature for each file):.Download the most recent version of the Simple Arcade Multifilter from this thread:.
The Simple Arcade Multifilter is one such tool, and not coincidentally, it makes filtering out unplayable MAME 2003 ROMs very simple.
Now, any ROM filtering software that can work with MAME's catver.ini file can sort out all of the unplayable games. As of today, I have completed a slate of updates to catver.ini that has each been double-checked with the original MAME 0.78 program. The goal is to make sure that MAME 2003's catver.ini is a trustworthy source of information on which games cannot be played, so that they can be sorted out. Lately I have been embarked on a project to cross reference all of the games designated as 'GAME_NOT_WORKING' in the MAME 0.78 source code with games so designated in the catver.ini categories file and in the MAME 0.78 'gamelist' text file.
As of Septemthis process will filter out 391 unplayable MAME 0.78 ROMs. Note: This process takes about five minutes total if you already have a MAME 0.78 ROM collection.