B4DS: Add support for *Defense of the Middle Kingdom*

Requires DS Debug console
DS-Homebrew · Jan 6, 2024 · 2251c97 · 2251c97
1 parent 56e79c9
commit 2251c97
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diff --git a/retail/arm9/include/dsiwaresSetForBootloader.h b/retail/arm9/include/dsiwaresSetForBootloader.h
@@ -147,6 +147,7 @@ static const char dsiWareForBootloader1[][4] = {
 	"KDV", // Dark Void Zero
 	"KUI", // Decathlon 2012
 	"K6B", // Deep Sea Creatures
+	"K35", // Defense of the Middle Kingdom
 	"KWT", // GO Series: Defense Wars
 	"KCP", // Dekisugi Tingle Pack
 	"KN2", // Devil Band: Rock the Underworld

diff --git a/retail/bootloader/source/arm7/dsi2ds_patches.c b/retail/bootloader/source/arm7/dsi2ds_patches.c
@@ -8383,6 +8383,33 @@ void patchDSiModeToDSMode(cardengineArm9* ce9, const tNDSHeader* ndsHeader) {
 		*(u32*)0x02072780 = 0xE1A00000; // nop (Skip Manual screen)
 	}
 
+	// Defense of the Middle Kingdom (USA)
+	// Sangoku Tower Defense: Doushou Teppeki (Japan)
+	// Requires 8MB of RAM
+	else if (strncmp(romTid, "K35", 3) == 0 && extendedMemory) {
+		const u32 newCodeAddr = 0x0205EE58;
+
+		codeCopy((u32*)newCodeAddr, (u32*)0x0200B390, 0xC0);
+		setBL(newCodeAddr+0x28, (u32)dsiSaveOpen);
+		setBL(newCodeAddr+0x40, (u32)dsiSaveGetLength);
+		setBL(newCodeAddr+0x5C, (u32)dsiSaveRead);
+		setBL(newCodeAddr+0x8C, (u32)dsiSaveClose);
+
+		*(u32*)0x0200B1E0 = 0xE1A00000; // nop
+		setBL(0x0200B240, newCodeAddr);
+		*(u32*)0x0200B27C = 0xE1A00000; // nop
+		setBL(0x0200B478, (u32)dsiSaveCreate); // dsiSaveCreateAuto
+		setBL(0x0200B488, (u32)dsiSaveOpen);
+		setBL(0x0200B4A8, (u32)dsiSaveWrite);
+		setBL(0x0200B4C0, (u32)dsiSaveClose);
+		*(u32*)0x0205CE4C = 0xE1A00000; // nop
+		tonccpy((u32*)0x0205D9D0, dsiSaveGetResultCode, 0xC);
+		*(u32*)0x02061130 = 0xE1A00000; // nop
+		patchInitDSiWare(0x02068918, heapEnd);
+		*(u32*)0x02068CA4 -= 0x39000;
+		patchUserSettingsReadDSiWare(0x02069DA4);
+	}
+
 	// GO Series: Defense Wars (USA)
 	// GO Series: Defence Wars (Europe)
 	// Uchi Makure!: Touch Pen Wars (Japan)

diff --git a/retail/bootloaderi/source/arm7/patch_common.c b/retail/bootloaderi/source/arm7/patch_common.c
@@ -5004,6 +5004,27 @@ void dsiWarePatch(cardengineArm9* ce9, const tNDSHeader* ndsHeader) {
 		}
 	}
 
+	// Defense of the Middle Kingdom (USA)
+	// Sangoku Tower Defense: Doushou Teppeki (Japan)
+	else if (strncmp(romTid, "K35", 3) == 0 && saveOnFlashcard) {
+		const u32 newCodeAddr = 0x0205EE58;
+
+		codeCopy((u32*)newCodeAddr, (u32*)0x0200B390, 0xC0);
+		setBL(newCodeAddr+0x28, (u32)dsiSaveOpen);
+		setBL(newCodeAddr+0x40, (u32)dsiSaveGetLength);
+		setBL(newCodeAddr+0x5C, (u32)dsiSaveRead);
+		setBL(newCodeAddr+0x8C, (u32)dsiSaveClose);
+
+		*(u32*)0x0200B1E0 = 0xE1A00000; // nop
+		setBL(0x0200B240, newCodeAddr);
+		*(u32*)0x0200B27C = 0xE1A00000; // nop
+		setBL(0x0200B478, (u32)dsiSaveCreate); // dsiSaveCreateAuto
+		setBL(0x0200B488, (u32)dsiSaveOpen);
+		setBL(0x0200B4A8, (u32)dsiSaveWrite);
+		setBL(0x0200B4C0, (u32)dsiSaveClose);
+		tonccpy((u32*)0x0205D9D0, dsiSaveGetResultCode, 0xC);
+	}
+
 	// GO Series: Defense Wars (USA)
 	// GO Series: Defence Wars (Europe)
 	// Uchi Makure!: Touch Pen Wars (Japan)