marcan(HackMii)述說沒改的Wii 將可以藉插件讀取DVD 資料….
現時, 插件暫不能讀取DVD 內容, marcan 將會推供一件軟件, 令已修改的Wii 可在軟件啟動的環境下讀取DVD , 並提供沒改的Wii 讀取DVD 的插件, 作者更聯絡 MplayerWii 作者希望雙方插件可互相使用, 藉此讀取DVD
與此同時, SNES9x及GenPlus作者更希望藉此次合作, 建立由DVD 啟動的插件
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同時, Wii破解專家Waninkoko 發現系統軟件不能直讀DVD 的解決辦法:
如成功修改系統軟件, 用家只需當中的DVDLowEnableDVDVideo, DVD_LowEnableVideo及DVD_LowUnencryptedRead就可以正常讀取DVD 光碟, 以下就是原文:
Beforehand, I have to say that Waninkoko explained me all of this. I know publishing this here is betraying him, but without publishing it i’m betraying myself for having the way for the scene to advance and not using it.
The exploit is all about the Nintendo’s idiotness. If you look at the DVD commands taken from the Revolution SDK there’s 8E DVDLowEnableDVDVideo, that they forgot to remove. If you can modify IOS to use this funcion instead, this activates a special mode from the DVD to enable DVD-R reading (in this case, its purpose was enabling VIDEO DVD’s)
If you modify IOS to enable this (you need to do it in a special way), you could enable reading of DVD-R’s from homebrew and the DVD drive would read it.
About backup loading.. you have to work that out a bit first.
To read data once DVD-Video mode is activated, another special funcition is used, that is, a backup would use the normal function, not the dvd-video one, so you would have to hack a little more for the backups to load.
DVD_LowEnableVideo was programmed for a DVD player that they didn’t create, but they left it there. The thing is, activating DVD Video mode is not simple as it checks for the UID of the process that wants to activate it, it can only be activated if the UID is 0, depending if the mode is activated or not, a variable is set to 1 or 0.
Using another reading function which is very similar to DVD_LowUnencryptedRead you could read discs in dvd-video mode and read sectors in a normal way. The problem is that DVD games use DVD_LowRead; to read data from the game partition we need it to use the special reading function, ¿how? Hacking IOS (creating a backup-only IOS), patching-on-the-fly (difficult).
That’s all. I’m Dj-Celta with my new user.
Message for Waninkoko: I’m sorry, I couldn’t keep it to myself and I can’t understand not publishing the bug. Nintendo knows about this.
Message for the rest: Don’t ask me, I don’t know anything else.”
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