MAMEWorld Forums - EmuChat - Re: [Solved]Dungeons&Dragons Tower of Doom and Shadow over Mystara Noob Questions

> > Has the similar bug been fixed as well?
> > I reported MT #3265 way back in 2009 where loading a modified or obsolete ROM set
> > (with no missing files) via the command line works fine, but in the internal UI it
> > results in MAME refusing to launch the game even if the exact same ROMs were
> actually
> > running in the background.
> >
> > "Missing" files and "incorrect" files are two completely different things and
> should
> > be treated as such. Loading a matching file but with wrong checksums should not be
> a
> > fatal error.
> >
> > Back when I found the bug, it was when a certain driver (aristmk4.cpp) had the
> exact
> > same filenames for every single ROM set, so simply renaming a zip file was
> sufficient
> > to test other games using the same hardware without having to compile MAME every
> time
> > on an ancient single core PC, which used to take over three hours on my old Celeron
> > to do a clean compile of 0.140 or whatever it was back then.
> >
> > Coincidentally, MT #3264 (reported by another user) was exactly the same thing but
> it
> > was dismissed and closed simply because someone was unable to reproduce the bug,
> > which would have only needed a matching filename with wrong checksums to reproduce.
>
>
> Nope, internal UI behaviour is not changed. It's still "don't run if set isn't best
> available". I can understand why dankan made in behave this way - it potentially cuts
> down false bug reports if you refuse to run with a bad ROM image. Launching with a
> "bad" ROM image is treated as an "advanced" operation and requires dropping to the
> command line.

Yep, agreed.

Too many false bug reports came from MAMEUI which didn't enforce this behavior (and worse, didn't even bother to tell you) Maybe it does now, maybe it's still stupid.

Of course this is one of the reasons MAMEUI was popular. I tried convincing somebody to switch to commandline / regular and they didn't want to because it told them that their roms had bad checksums. Their roms always had bad checksums, they were running bad dumps, they preferred to not know. (Game in question was Marvel Vs Capcom, there was a bad rom in the parent set that was redumped at one point, it would even cause the game to crash in places)