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Dolphin, the GameCube and Wii emulator - Forums › Game Modifications › Cheats, Hacks, & Game Patches v
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Looking for help with this Demo Super Smash Bros Melee disc.
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Looking for help with this Demo Super Smash Bros Melee disc.
06-17-2018, 03:51 AM
#1
EurekaDramaX
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Title says it all really but to be more specific:

The demo disc has 2 demos in it. One for Melee (like I said), and I think the other's for Pikmin.
The actual demo disc works fine in Dolphin and I extracted it fine however the actual demos (which are packed in ".tgc" files, which are just GC ISOs with a special header up until 0x8000), aren't able to be extracted.

As they are just special GC ISOs, I got rid of the header of the Melee package however loading that ISO crashes Dolphin and GC Tool crashes as well. Stranger still is that Dolphin reads all the info just fine but doesn't display the filesystem.

https://youtu.be/tcYOK7AmXbo < this is the video where I got the demo disc from, someone in the comments had a dump of it. Dunno if it's ok to share but that's what the whole demo disc look like, I'm mainly interested in just the Melee portion.
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06-17-2018, 03:57 AM (This post was last modified: 06-17-2018, 03:57 AM by JosJuice.)
#2
JosJuice Offline
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Just removing the first 0x8000 bytes is not enough to turn a TGC file into a working ISO file. If you update to a recent development version of Dolphin, it will have built-in support for TGC files, so I would recommend using that instead of trying to convert the file manually.
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06-17-2018, 04:01 AM
#3
EurekaDramaX
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(06-17-2018, 03:57 AM)JosJuice Wrote: Just removing the first 0x8000 bytes is not enough to turn a TGC file into a working ISO file. If you update to a recent development version of Dolphin, it will have built-in support for TGC files, so I would recommend using that instead of trying to convert the file manually.

Ohhhhh I see, thank you. May I ask what the other differences are between a TGC file and just a normal ISO? If it is fine to explain here...

edit: I found a tool called tgctogcm and that seemed to do the trick. Thank you regardless however.
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06-17-2018, 04:11 AM
#4
JosJuice Offline
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(06-17-2018, 04:01 AM)EurekaDramaX Wrote: Ohhhhh I see, thank you.  May I ask what the other differences are between a TGC file and just a normal ISO?  If it is fine to explain here...

The FST and DOL offsets in the disc header (the one at 0x8000) are wrong, and the file offsets in the FST are also wrong. They need to be adjusted by a value which can be obtained from the TGC header (the one at 0x0).

(06-17-2018, 04:01 AM)EurekaDramaX Wrote: edit:  I found a tool called tgctogcm and that seemed to do the trick.  Thank you regardless however.

That's also a good option.
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