> > On the downside, CHD v1 and v2 files are now unsupported, and CHD v3 and v4 no
> longer
> > have write support (support is for read only).
>
> MAME only uses read only chds, the diff doesn't have to be the same version as the
> chd.
> I don't tend to keep the diff files, so I don't know if you can upgrade them.
>
> I haven't upgraded the chd files.
I think that either in the v3->v4 update or in the v4->v5 update, having older diffs with updated CHDs caused the emulator to crash while attempting to apply the diff
anyway v4 CHDs for naomi gd-roms turned out to miss some important data, so I suggest to at least throw those away and search for the v5 versions (update v4 to v5 would not work for those, they had to be rebuilt from raw dumps)
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Re: 0.144 CHDs...any technical reasons to update them to 0.149?
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