MAMEWorld Forums - News - Re: MAME 0.196

> Whoever decided to add TruRip/Dumpcast dumps as a priority over Redump dumps should
> be aware, that the former ones are sometimes bad dumps.
> http://dcemulation.org/dumpcast/viewtopic.php?f=6&t=1339 -- example.
> And since they don't use an offset correction and cut certain gaps, some dumps are
> simply incomplete, more like old bin-cues compared to the proper offset-corrected
> dumps, if to compare with the CD world.

GDI image format by original design do not include gaps, and have no offset correction. if you don't like it - please create some new own image format for GD-ROMs instead of torturing GDI and trying to put there various things, to which it wasn't originally designed (Прокрустово ложе, и всё такое).

FWIW there is good explanation of Redump modifications, and also the tool for conversion Redump-GDIs to normal-GDIs
https://github.com/SONIC3D/gdi-utils
in short - for some reason Redump images include 2sec Pause/PreGap at the start of each track. this also means in .gdi files each audio track's LBA points not to its real start but to start of PreGap prior to it.

PS: by my personal impressions - these differences is no planned / intent, but "accidentally happened" because these guys doesn't really understood that they did, and why they did it. why I'm think so ? - because these changes wasn't documented anywhere by Redump team, and seems not known even for theirs members, but was researched and documented by 3rd-party people years ago.