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Added detection of DS mode DSiWare. Fixes #95.

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Gericom
2026-01-11 13:20:01 +01:00
parent c62945af58
commit 24346eaf30
6 changed files with 50 additions and 43 deletions
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20
common/ndsHeader.h
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@@ -1,6 +1,9 @@
#pragma once
#include <nds/ndstypes.h>
#define NDS_HEADER_UNIT_CODE_NOT_SUPPORTS_DS_MODE (1 << 0)
#define NDS_HEADER_UNIT_CODE_SUPPORTS_DSI_MODE (1 << 1)
struct nds_header_ntr_t
{
u8 gameTitle[12];
@@ -55,9 +58,9 @@ struct nds_header_ntr_t
u32 debugRomLoadAddress; // and arm9 entry
u32 debugRomArm7EntryAddress;
constexpr bool IsTwlRom() const
constexpr bool SupportsDsiMode() const
{
return unitCode & 2;
return unitCode & NDS_HEADER_UNIT_CODE_SUPPORTS_DSI_MODE;
}
};
@@ -134,29 +137,32 @@ struct nds_header_twl_t : public nds_header_ntr_t
u8 gapF00[0x80];
u8 headerRsaSha1Signature[0x80];
/// @brief Returns if this is a DSiWare application. Note that this does not imply that the app runs in DSi mode.
/// @return \c true when this is a DSiWare application, or \c false otherwise.
constexpr bool IsDsiWare() const
{
return IsTwlRom() && ((titleId >> 32) & 4) != 0;
// Do not use SupportsDsiMode() here, because there exist DS mode DSiWare applications.
return (twlFlags & 1) != 0 && ((titleId >> 32) & 4) != 0;
}
constexpr bool HasSdAccess() const
{
return IsTwlRom() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SD_ACCESS) != 0;
return SupportsDsiMode() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SD_ACCESS) != 0;
}
constexpr bool HasNandAccess() const
{
return IsTwlRom() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_NAND_ACCESS) != 0;
return SupportsDsiMode() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_NAND_ACCESS) != 0;
}
constexpr bool HasShared2Access() const
{
return IsTwlRom() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SHARED2_ACCESS) != 0;
return SupportsDsiMode() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SHARED2_ACCESS) != 0;
}
constexpr bool HasSslCertAccess() const
{
return IsTwlRom() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SSLCERT_ACCESS) != 0;
return SupportsDsiMode() && (accessControl & NDS_HEADER_TWL_ACCESS_CONTROL_SSLCERT_ACCESS) != 0;
}
};