mirror of
https://github.com/suloku/savegame-manager.git
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52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*
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* savegame_manager: a tool to backup and restore savegames from Nintendo
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* DS cartridges. Nintendo DS and all derivative names are trademarks
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* by Nintendo. EZFlash 3-in-1 is a trademark by EZFlash.
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*
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* dsi.cpp: A happy collection of functions dealing with DSi-specific things
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*
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* Copyright (C) Pokedoc (2010)
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <nds.h>
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#include "dsi.h"
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bool isDsi()
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{
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// This code attempts to identify an application running in DSi mode. We
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// make use of the fact that the DSi has 16 MB of memory, while the DS
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// only has 4 MB. Since the Chinese iQue DS has 8 MB, we will read above
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// this boundary.
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u32 test = *(u32*)0x02800000; // this is 8 MB into the main memory
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u32 test2 = *(u32*)0x02000000; // this is 8 MB into the main memory
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if (test == 0x00000000)
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return false;
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if (test == test2)
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return false;
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// Try writing to this address. If the value is accepted, we are on a DSi in DSi mode.
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*(u32*)0x02800000 = 0x12345678;
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if (*(u32*)0x02800000 == 0x12345678)
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return true;
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// The memory address does not exist, so we are on a DS (or a DSi in DS mode)
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return false;
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}
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