(Set xx)

[Upo]

I have a general question about MAME Roms

Is the advance rom set i.e. (set 2), (set 3), etc. better than the original rom? the reason I'm asking is that the automatic rom filter function in GameEX sometimes uses (set 1) instead of (set 2), how does this work?

Thnx

[Adultery]

I think that set 1 is the parent set and all other sets are clones in many cases. The functionality probably makes no difference, just the same game on a different board. Unless you set to use no clones unless better, GameEx usually bases its decision on parent ROM sets.

[Upo]

I think that set 1 is the parent set and all other sets are clones in many cases. The functionality probably makes no difference, just the same game on a different board. Unless you set to use no clones unless better, GameEx usually bases its decision on parent ROM sets.

Isn't clones or the subsequent sets also a way to "upgrade" the game functionality, i.e. sort out bugs, change the game code (make it easier or harder) etc?

[Draco1962]

Not necessarily. Sometimes the subsequent sets, as Adultery noted, are on a different board (this may be due to a change in manufacturer for the board, however, other than instructions that may have been needed for a different chipset, no funcitionaly changes in the ROM code itself). Some may be as you said - an upgrade in functionality.

Keep in mind that the original ROM set is defined as the original working set. Subsequent sets may not necessarily work in the version of MAME you are using if at all.

A good definition of Original ROM Set, Revisions, BIOS ROMS, Clones, and Bootlegs can be found here - see the Game Data section of the article.

[Upo]

Thnx guys