core:

- fix boot games without real firmware (tested on Contra 4);

desmume/src/NDSSystem.cpp

@@ -585,6 +585,15 @@ int NDS_LoadROM(const char *filename, const char *physicalName, const char *logi
 
 	gameInfo.populate();
 	gameInfo.crc = crc32(0,(u8*)gameInfo.romdata,gameInfo.romsize);
+
+	// 1st byte - Manufacturer (C2h = Macronix)
+	// 2nd byte - Chip size in megabytes minus 1 (eg. 0Fh = 16MB)
+	// 3rd byte - Reserved/zero (probably upper bits of chip size)
+	// 4th byte - Bit7: Secure Area Block transfer mode (8x200h or 1000h)
+
+	// It doesnt look like the chip size is important.
+	gameInfo.chipID = 0x00000000 | 0x00000000 | 0x00000F00 | 0x000000C2;
+
 	INFO("\nROM game code: %c%c%c%c\n", gameInfo.header.gameCode[0], gameInfo.header.gameCode[1], gameInfo.header.gameCode[2], gameInfo.header.gameCode[3]);
 	INFO("ROM crc: %08X\n", gameInfo.crc);
 	INFO("ROM serial: %s\n", gameInfo.ROMserial);
@@ -2657,6 +2666,16 @@ void NDS_Reset()
 		_MMU_write08<ARMCPU_ARM9>(0x02FFFC40,0x1);
 		_MMU_write08<ARMCPU_ARM7>(0x02FFFC40,0x1);
 
+		//
+		_MMU_write32<ARMCPU_ARM7>(0x027FF800, gameInfo.chipID);		// Chip ID
+		_MMU_write32<ARMCPU_ARM7>(0x027FF804, gameInfo.chipID);		// Secure Chip ID
+		_MMU_write32<ARMCPU_ARM7>(0x027FFC00, gameInfo.chipID);		// 2nd Secure Chip ID
+		// Write the header checksum to memory
+		_MMU_write16<ARMCPU_ARM9>(0x027FF808, gameInfo.header.headerCRC16);
+
+		// Write the header checksum to memory (the firmware needs it to see the cart)
+		//_MMU_write16<ARMCPU_ARM9>(0x027FF808, T1ReadWord(MMU.CART_ROM, 0x15E));
+
 		// Save touchscreen calibration info in a structure
 		// so we can easily access it at any time
 		// TODO - this isn't good. need revising.

desmume/src/NDSSystem.h

@@ -319,6 +319,7 @@ struct GameInfo
 {
 	GameInfo() :	romdata(NULL),
 					crc(0),
+					chipID(0x00000FC2),
 					romsize(0),
 					allocatedSize(0),
 					mask(0)
@@ -373,6 +374,7 @@ struct GameInfo
 		romsize = size;
 	}
 	u32 crc;
+	u32 chipID;
 	NDS_header header;
 	char ROMserial[20];
 	char ROMname[20];

desmume/src/addons/slot1_retail.cpp

@@ -80,8 +80,6 @@ private:
 
 					// It doesnt look like the chip size is important.
 
-					u32 chipID = 0x00000000 | 0x00000000 | 0x00000F00 | 0x000000C2;
-
 					// Note: the BIOS stores the chip ID in main memory
 					// Most games continuously compare the chip ID with
 					// the value in memory, probably to know if the card
@@ -91,7 +89,7 @@ private:
 					// zero too.
 
 					//staff of kings verifies this (it also uses the arm7 IRQ 20)
-					return chipID;
+					return gameInfo.chipID;
 				}
 				break;
 

desmume/src/addons/slot1_retail_nand.cpp

@@ -120,11 +120,9 @@ private:
 					// ID in main mem is zero and this value needs to be
 					// zero too.
 
-					u32 chipID = 0;
-
 					//note that even if desmume was booting from firmware, and reading this chip ID to store in main memory,
 					//this still works, since it will have read 00 originally and then read 00 to validate.
-					return chipID;
+					return gameInfo.chipID;
 				}
 				break;