+static int rom_strcmp(int rom_offset, const char *s1)\r
+{\r
+ int i, len = strlen(s1);\r
+ const char *s_rom = (const char *)Pico.rom + rom_offset;\r
+ for (i = 0; i < len; i++)\r
+ if (s1[i] != s_rom[i^1])\r
+ return 1;\r
+ return 0;\r
+}\r
+\r
+static int name_cmp(const char *name)\r
+{\r
+ return rom_strcmp(0x150, name);\r
+}\r
+\r
+/*\r
+ * various cart-specific things, which can't be handled by generic code\r
+ * (maybe I should start using CRC for this stuff?)\r
+ */\r
+void PicoCartDetect(void)\r
+{\r
+ int sram_size = 0, csum;\r
+ if(SRam.data) free(SRam.data); SRam.data=0;\r
+ Pico.m.sram_reg = 0;\r
+\r
+ csum = PicoRead32(0x18c) & 0xffff;\r
+\r
+ if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')\r
+ {\r
+ if (Pico.rom[0x1B2] & 0x40)\r
+ {\r
+ // EEPROM\r
+ SRam.start = PicoRead32(0x1B4) & ~1; // zero address is used for clock by some games\r
+ SRam.end = PicoRead32(0x1B8);\r
+ sram_size = 0x2000;\r
+ Pico.m.sram_reg |= 4;\r
+ } else {\r
+ // normal SRAM\r
+ SRam.start = PicoRead32(0x1B4) & ~0xff;\r
+ SRam.end = PicoRead32(0x1B8) | 1;\r
+ sram_size = SRam.end - SRam.start + 1;\r
+ }\r
+ SRam.start &= ~0xff000000;\r
+ SRam.end &= ~0xff000000;\r
+ Pico.m.sram_reg |= 0x10; // SRAM was detected\r
+ }\r
+ if (sram_size <= 0)\r
+ {\r
+ // some games may have bad headers, like S&K and Sonic3\r
+ // note: majority games use 0x200000 as starting address, but there are some which\r
+ // use something else (0x300000 by HardBall '95). Luckily they have good headers.\r
+ SRam.start = 0x200000;\r
+ SRam.end = 0x203FFF;\r
+ sram_size = 0x004000;\r
+ }\r
+\r
+ if (sram_size)\r
+ {\r
+ SRam.data = (unsigned char *) calloc(sram_size, 1);\r
+ if(!SRam.data) return;\r
+ }\r
+ SRam.changed = 0;\r
+\r
+ // set EEPROM defaults, in case it gets detected\r
+ SRam.eeprom_type = 0; // 7bit (24C01)\r
+ SRam.eeprom_abits = 3; // eeprom access must be odd addr for: bit0 ~ cl, bit1 ~ in\r
+ SRam.eeprom_bit_cl = 1;\r
+ SRam.eeprom_bit_in = 0;\r
+ SRam.eeprom_bit_out= 0;\r
+\r
+ // some known EEPROM data (thanks to EkeEke)\r
+ if (name_cmp("COLLEGE SLAM") == 0 ||\r
+ name_cmp("FRANK THOMAS BIGHURT BASEBAL") == 0)\r
+ {\r
+ SRam.eeprom_type = 3;\r
+ SRam.eeprom_abits = 2;\r
+ SRam.eeprom_bit_cl = 0;\r
+ }\r
+ else if (name_cmp("NBA JAM TOURNAMENT EDITION") == 0 ||\r
+ name_cmp("NFL QUARTERBACK CLUB") == 0)\r
+ {\r
+ SRam.eeprom_type = 2;\r
+ SRam.eeprom_abits = 2;\r
+ SRam.eeprom_bit_cl = 0;\r
+ }\r
+ else if (name_cmp("NBA JAM") == 0)\r
+ {\r
+ SRam.eeprom_type = 2;\r
+ SRam.eeprom_bit_out = 1;\r
+ SRam.eeprom_abits = 0;\r
+ }\r
+ else if (name_cmp("NHLPA HOCKEY '93") == 0 ||\r
+ name_cmp("NHLPA Hockey '93") == 0 ||\r
+ name_cmp("RINGS OF POWER") == 0)\r
+ {\r
+ SRam.start = SRam.end = 0x200000;\r
+ Pico.m.sram_reg = 0x14;\r
+ SRam.eeprom_abits = 0;\r
+ SRam.eeprom_bit_cl = 6;\r
+ SRam.eeprom_bit_in = 7;\r
+ SRam.eeprom_bit_out= 7;\r
+ }\r
+ else if ( name_cmp("MICRO MACHINES II") == 0 ||\r
+ (name_cmp(" ") == 0 && // Micro Machines {Turbo Tournament '96, Military - It's a Blast!}\r
+ (csum == 0x165e || csum == 0x168b || csum == 0xCEE0 || csum == 0x2C41)))\r
+ {\r
+ SRam.start = 0x300000;\r
+ SRam.end = 0x380001;\r
+ Pico.m.sram_reg = 0x14;\r
+ SRam.eeprom_type = 2;\r
+ SRam.eeprom_abits = 0;\r
+ SRam.eeprom_bit_cl = 1;\r
+ SRam.eeprom_bit_in = 0;\r
+ SRam.eeprom_bit_out= 7;\r
+ }\r
+\r
+ // SVP detection\r
+ else if (name_cmp("Virtua Racing") == 0 ||\r
+ name_cmp("VIRTUA RACING") == 0)\r
+ {\r
+ PicoSVPStartup();\r
+ }\r
+\r
+ // Detect 12-in-1 mapper\r
+ else if ((name_cmp("ROBOCOP 3") && Pico.romsize == 0x200000) ||\r
+ (rom_strcmp(0x160, "FLICKY") && Pico.romsize >= 0x200000))\r
+ {\r
+ carthw_12in1_startup();\r
+ }\r
+\r
+ // Realtec mapper\r
+ else if (Pico.romsize == 512*1024 && (\r
+ rom_strcmp(0x94, "THE EARTH DEFEND") ||\r
+ rom_strcmp(0xfe, "WISEGAME 11-03-1993") || // Funny World\r
+ rom_strcmp(0x95, "MALLET LEGEND "))) // Whac-A-Critter\r
+ {\r
+ carthw_realtec_startup();\r
+ }\r
+\r
+ // Some games malfunction if SRAM is not filled with 0xff\r
+ if (name_cmp("DINO DINI'S SOCCER") == 0 ||\r
+ name_cmp("MICRO MACHINES II") == 0)\r
+ {\r
+ memset(SRam.data, 0xff, sram_size);\r
+ }\r
+\r
+ // Unusual region 'code'\r
+ if (rom_strcmp(0x1f0, "EUROPE") == 0)\r
+ *(int *) (Pico.rom+0x1f0) = 0x20204520;\r
+}\r
+\r