piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-26 15:50:00 -06:00
Code Issues Packages Projects Releases Wiki Activity

Support emulating R4 Revolution/M3DS Simply cartridges. (#1854)

Browse Source 
* Support emulating R4 Revolution/M3DS Simply cartridges.

* NDSCartR4: Write state information to savestate file.

* NDSCart: Use strncmp instead of strcmp for R4 detection.

* NDSCartR4: stylistic improvements

* NDSCartR4: rudimentary Ace3DS support

* NDSCartR4: fix boot when firmware enabled

* NDSCartR4: Fix for namespace changes

---------

Co-authored-by: RSDuck <RSDuck@users.noreply.github.com>
This commit is contained in:
Adrian Siekierka
2023-12-15 08:19:53 +01:00
committed by GitHub
parent 9bfc9c08ff
commit 6f47c9ed4c
6 changed files with 617 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
src/NDSCart.h
View File

@ -45,6 +45,7 @@ enum CartType
RetailIR = 0x103,
RetailBT = 0x104,
Homebrew = 0x201,
UnlicensedR4 = 0x301
};
class NDSCartSlot;
@ -236,19 +237,13 @@ public:
u8 SPIWrite(u8 val, u32 pos, bool last) override;
};
// CartHomebrew -- homebrew 'cart' (no SRAM, DLDI)
class CartHomebrew : public CartCommon
// CartSD -- any 'cart' with an SD card slot
class CartSD : public CartCommon
{
public:
CartHomebrew(const u8* rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
CartHomebrew(std::unique_ptr<u8[]>&& rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
~CartHomebrew() override;
void Reset() override;
void SetupDirectBoot(const std::string& romname, NDS& nds) override;
int ROMCommandStart(NDS& nds, NDSCart::NDSCartSlot& cartslot, const u8* cmd, u8* data, u32 len) override;
void ROMCommandFinish(const u8* cmd, u8* data, u32 len) override;
CartSD(const u8* rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
CartSD(std::unique_ptr<u8[]>&& rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
~CartSD() override;
[[nodiscard]] const std::optional<FATStorage>& GetSDCard() const noexcept { return SD; }
void SetSDCard(FATStorage&& sdcard) noexcept { SD = std::move(sdcard); }
@ -260,7 +255,7 @@ public:
// it just leaves behind an optional with a moved-from value
}
private:
protected:
void ApplyDLDIPatchAt(u8* binary, u32 dldioffset, const u8* patch, u32 patchlen, bool readonly) const;
void ApplyDLDIPatch(const u8* patch, u32 patchlen, bool readonly);
void ReadROM_B7(u32 addr, u32 len, u8* data, u32 offset) const;
@ -268,6 +263,74 @@ private:
std::optional<FATStorage> SD {};
};
// CartHomebrew -- homebrew 'cart' (no SRAM, DLDI)
class CartHomebrew : public CartSD
{
public:
CartHomebrew(const u8* rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
CartHomebrew(std::unique_ptr<u8[]>&& rom, u32 len, u32 chipid, ROMListEntry romparams, std::optional<FATStorage>&& sdcard = std::nullopt);
~CartHomebrew() override;
void Reset() override;
void SetupDirectBoot(const std::string& romname, NDS& nds) override;
int ROMCommandStart(NDS& nds, NDSCart::NDSCartSlot& cartslot, const u8* cmd, u8* data, u32 len) override;
void ROMCommandFinish(const u8* cmd, u8* data, u32 len) override;
};
// CartR4 -- unlicensed R4 'cart' (NDSCartR4.cpp)
enum CartR4Type
{
/* non-SDHC carts */
CartR4TypeM3Simply = 0,
CartR4TypeR4 = 1,
/* SDHC carts */
CartR4TypeAce3DS = 2
};
enum CartR4Language
{
CartR4LanguageJapanese = (7 << 3) | 1,
CartR4LanguageEnglish = (7 << 3) | 2,
CartR4LanguageFrench = (2 << 3) | 2,
CartR4LanguageKorean = (4 << 3) | 2,
CartR4LanguageSimplifiedChinese = (6 << 3) | 3,
CartR4LanguageTraditionalChinese = (7 << 3) | 3
};
class CartR4 : public CartSD
{
public:
CartR4(std::unique_ptr<u8[]>&& rom, u32 len, u32 chipid, ROMListEntry romparams, CartR4Type ctype, CartR4Language clanguage,
std::optional<FATStorage>&& sdcard = std::nullopt);
~CartR4() override;
void Reset() override;
void DoSavestate(Savestate* file) override;
int ROMCommandStart(NDS& nds, NDSCart::NDSCartSlot& cartslot, const u8* cmd, u8* data, u32 len) override;
void ROMCommandFinish(const u8* cmd, u8* data, u32 len) override;
private:
inline u32 GetAdjustedSector(u32 sector) const
{
return R4CartType >= CartR4TypeAce3DS ? sector : sector >> 9;
}
u16 GetEncryptionKey(u16 sector);
void ReadSDToBuffer(u32 sector, bool rom);
u64 SDFATEntrySectorGet(u32 entry, u32 addr);
s32 EncryptionKey;
u32 FATEntryOffset[2];
u8 Buffer[512];
u8 InitStatus;
CartR4Type R4CartType;
CartR4Language CartLanguage;
bool BufferInitialized;
};
class NDSCartSlot
{
public: