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Merged
coderkei merged 2 commits into from
Sep 13, 2026
Merged

finish ndz support #59

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664a024
Read banner and save info from NDZ front matter
Pheeeeenom Sep 13, 2026
fafe42f
Launch NDZ roms with Pico-Loader
Pheeeeenom Sep 13, 2026
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32 changes: 32 additions & 0 deletions arm9/source/dsrom.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,10 @@
#include "unknown_nds_banner_bin.h"

namespace {
constexpr long ndzBannerOffset = 0x10;
constexpr long ndzGameCodeOffset = 0x2410;
constexpr long ndzHeaderCrcOffset = 0x2418;

const u16* iconBackground() {
static u16 background[32 * 32];
static int cachedSource = -1;
Expand Down Expand Up @@ -49,6 +53,7 @@ DSRomInfo& DSRomInfo::operator=(const DSRomInfo& src) {
_isDSiWare = src._isDSiWare;
_isModernHomebrew = src._isModernHomebrew;
_isGbaRom = src._isGbaRom;
_isNdz = src._isNdz;
_fileName = src._fileName;
_romVersion = src._romVersion;
_extIcon = src._extIcon;
Expand All @@ -60,6 +65,7 @@ bool DSRomInfo::loadDSRomInfo(const std::string& filename, bool loadBanner) {
_isHomebrew = EFalse;
_isDSiWare = EFalse;
_isModernHomebrew = EFalse;
_isNdz = false;
FILE* f = fopen(filename.c_str(), "rb");
if (NULL == f) // 锟斤拷锟侥硷拷失锟斤拷
{
Expand All @@ -76,6 +82,27 @@ bool DSRomInfo::loadDSRomInfo(const std::string& filename, bool loadBanner) {
return false;
}

if (0 == memcmp(&header, "NDZ1", 4)) {
_isNdz = true;
_isDSRom = ETrue;
fseek(f, ndzGameCodeOffset, SEEK_SET);
fread(_saveInfo.gameCode, 1, sizeof(_saveInfo.gameCode), f);
fseek(f, ndzHeaderCrcOffset, SEEK_SET);
fread(&_saveInfo.gameCRC, 1, sizeof(_saveInfo.gameCRC), f);
saveManager().updateSaveInfoByInfo(_saveInfo);

tNDSBanner banner;
fseek(f, ndzBannerOffset, SEEK_SET);
if (sizeof(tNDSBanner) == fread(&banner, 1, sizeof(banner), f) &&
swiCRC16(0xffff, banner.icon, 0x840 - 32) == banner.crc) {
memcpy(&_banner, &banner, sizeof(_banner));
} else {
loadBannerIcon(_banner, "nds_banner.bin", nds_banner_bin);
}
fclose(f);
return true;
}

if (header.unitCode == 0x03) {
_isDSiWare = ETrue;
}
Expand Down Expand Up @@ -357,6 +384,11 @@ bool DSRomInfo::isGbaRom(void) {
return (_isGbaRom == ETrue) ? true : false;
}

bool DSRomInfo::isNdz(void) {
load();
return _isNdz;
}

void DSRomInfo::setExtIcon(const std::string& aValue) {
_extIcon = fileIcons().Icon(aValue);
};
Expand Down
4 changes: 3 additions & 1 deletion arm9/source/dsrom.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ class DSRomInfo {
TBool _isHomebrew;
TBool _isModernHomebrew;
TBool _isGbaRom;
bool _isNdz;
std::string _fileName;
s32 _extIcon;
u8 _romVersion;
Expand All @@ -37,7 +38,7 @@ class DSRomInfo {

public:
DSRomInfo()
: _isDSRom(EFalse), _isDSiWare(EFalse), _isHomebrew(EFalse), _isModernHomebrew(EFalse), _isGbaRom(EFalse), _extIcon(-1), _romVersion(0) {
: _isDSRom(EFalse), _isDSiWare(EFalse), _isHomebrew(EFalse), _isModernHomebrew(EFalse), _isGbaRom(EFalse), _isNdz(false), _extIcon(-1), _romVersion(0) {
// memcpy(&_banner,unknown_banner_bin,unknown_banner_bin_size);
memset(&_banner, 0, sizeof(_banner));
memset(&_saveInfo, 0, sizeof(_saveInfo));
Expand All @@ -56,6 +57,7 @@ class DSRomInfo {
bool isHomebrew(void);
bool isModernHomebrew(void);
bool isGbaRom(void);
bool isNdz(void);
DSRomInfo& operator=(const DSRomInfo& src);
void MayBeDSRom(const std::string& filename) {
_isDSRom = EMayBe;
Expand Down
2 changes: 1 addition & 1 deletion arm9/source/romlauncher.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -250,7 +250,7 @@ TLaunchResult launchRom(const std::string& aFullPath, DSRomInfo& aRomInfo, bool

u8 loader = aRomInfo.saveInfo().getLoader();
// loader = 0: pico, 1: nds-bootstrap, 2: global
if(((gs().pico && loader == 2) || loader == 0) && aFullPath[0] != 's'){ //roms can only be launched from the sd with nds-bootstrap
if(aRomInfo.isNdz() || (((gs().pico && loader == 2) || loader == 0) && aFullPath[0] != 's')){ //roms can only be launched from the sd with nds-bootstrap
launcher = new DSpicoLauncher();
}
else {
Expand Down
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