// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator. // Copyright (C) 1999-2003 Forgotten // Copyright (C) 2004 Forgotten and the VBA development team // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2, or(at your option) // any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software Foundation, // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #include "sdfileio.h" #include #include #include #include #include "../System.h" #include "../NLS.h" #include "GB.h" #include "gbCheats.h" #include "gbGlobals.h" #include "gbMemory.h" #include "gbSGB.h" #include "gbSound.h" #include "../unzip.h" #include "../Util.h" #ifdef __GNUC__ #define _stricmp strcasecmp #endif extern u8 *pix; extern bool speedup; bool gbUpdateSizes(); // debugging bool memorydebug = false; char gbBuffer[2048]; extern u16 gbLineMix[160]; // mappers void (*mapper)(u16,u8) = NULL; void (*mapperRAM)(u16,u8) = NULL; u8 (*mapperReadRAM)(u16) = NULL; // registers gbRegister PC; gbRegister SP; gbRegister AF; gbRegister BC; gbRegister DE; gbRegister HL; u16 IFF; // 0xff04 u8 register_DIV = 0; // 0xff05 u8 register_TIMA = 0; // 0xff06 u8 register_TMA = 0; // 0xff07 u8 register_TAC = 0; // 0xff0f u8 register_IF = 0; // 0xff40 u8 register_LCDC = 0; // 0xff41 u8 register_STAT = 0; // 0xff42 u8 register_SCY = 0; // 0xff43 u8 register_SCX = 0; // 0xff44 u8 register_LY = 0; // 0xff45 u8 register_LYC = 0; // 0xff46 u8 register_DMA = 0; // 0xff4a u8 register_WY = 0; // 0xff4b u8 register_WX = 0; // 0xff4f u8 register_VBK = 0; // 0xff51 u8 register_HDMA1 = 0; // 0xff52 u8 register_HDMA2 = 0; // 0xff53 u8 register_HDMA3 = 0; // 0xff54 u8 register_HDMA4 = 0; // 0xff55 u8 register_HDMA5 = 0; // 0xff70 u8 register_SVBK = 0; // 0xffff u8 register_IE = 0; // ticks definition int GBDIV_CLOCK_TICKS = 64; int GBLCD_MODE_0_CLOCK_TICKS = 51; int GBLCD_MODE_1_CLOCK_TICKS = 1140; int GBLCD_MODE_2_CLOCK_TICKS = 20; int GBLCD_MODE_3_CLOCK_TICKS = 43; int GBLY_INCREMENT_CLOCK_TICKS = 114; int GBTIMER_MODE_0_CLOCK_TICKS = 256; int GBTIMER_MODE_1_CLOCK_TICKS = 4; int GBTIMER_MODE_2_CLOCK_TICKS = 16; int GBTIMER_MODE_3_CLOCK_TICKS = 64; int GBSERIAL_CLOCK_TICKS = 128; int GBSYNCHRONIZE_CLOCK_TICKS = 52920; // state variables // interrupt int gbInterrupt = 0; int gbInterruptWait = 0; // serial int gbSerialOn = 0; int gbSerialTicks = 0; int gbSerialBits = 0; // timer int gbTimerOn = 0; int gbTimerTicks = 0; int gbTimerClockTicks = 0; int gbTimerMode = 0; // lcd int gbLcdMode = 2; int gbLcdTicks = GBLCD_MODE_2_CLOCK_TICKS; int gbLcdLYIncrementTicks = 0; // div int gbDivTicks = GBDIV_CLOCK_TICKS; // cgb int gbVramBank = 0; int gbWramBank = 1; int gbHdmaSource = 0x0000; int gbHdmaDestination = 0x8000; int gbHdmaBytes = 0x0000; int gbHdmaOn = 0; int gbSpeed = 0; // frame counting int gbFrameCount = 0; int gbFrameSkip = 0; int gbFrameSkipCount = 0; // timing u32 gbLastTime = 0; u32 gbElapsedTime = 0; u32 gbTimeNow = 0; int gbSynchronizeTicks = GBSYNCHRONIZE_CLOCK_TICKS; // emulator features int gbBattery = 0; int gbCaptureNumber = 0; bool gbCapture = false; bool gbCapturePrevious = false; int gbJoymask[4] = { 0, 0, 0, 0 }; int gbRomSizes[] = { 0x00008000, // 32K 0x00010000, // 64K 0x00020000, // 128K 0x00040000, // 256K 0x00080000, // 512K 0x00100000, // 1024K 0x00200000, // 2048K 0x00400000, // 4096K 0x00800000 // 8192K }; int gbRomSizesMasks[] = { 0x00007fff, 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff, 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff }; int gbRamSizes[6] = { 0x00000000, // 0K 0x00000800, // 2K 0x00002000, // 8K 0x00008000, // 32K 0x00020000, // 128K 0x00010000 // 64K }; int gbRamSizesMasks[6] = { 0x00000000, 0x000007ff, 0x00001fff, 0x00007fff, 0x0001ffff, 0x0000ffff }; int gbCycles[] = { // 0 1 2 3 4 5 6 7 8 9 a b c d e f 1, 3, 2, 2, 1, 1, 2, 1, 5, 2, 2, 2, 1, 1, 2, 1, // 0 1, 3, 2, 2, 1, 1, 2, 1, 3, 2, 2, 2, 1, 1, 2, 1, // 1 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 2 2, 3, 2, 2, 3, 3, 3, 1, 2, 2, 2, 2, 1, 1, 2, 1, // 3 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 4 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 5 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 6 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, // 7 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 8 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // 9 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // a 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, // b 2, 3, 3, 4, 3, 4, 2, 4, 2, 4, 3, 2, 3, 6, 2, 4, // c 2, 3, 3, 0, 3, 4, 2, 4, 2, 4, 3, 0, 3, 0, 2, 4, // d 3, 3, 2, 0, 0, 4, 2, 4, 4, 1, 4, 0, 0, 0, 2, 4, // e 3, 3, 2, 1, 0, 4, 2, 4, 3, 2, 4, 1, 0, 0, 2, 4 // f }; int gbCyclesCB[] = { // 0 1 2 3 4 5 6 7 8 9 a b c d e f 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 0 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 1 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 2 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 2, 2, 4, 2, // 3 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 4 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 5 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 6 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 7 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 8 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // 9 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // a 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // b 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // c 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // d 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, // e 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2 // f }; u16 DAATable[] = { 0x0080,0x0100,0x0200,0x0300,0x0400,0x0500,0x0600,0x0700, 0x0800,0x0900,0x1020,0x1120,0x1220,0x1320,0x1420,0x1520, 0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700, 0x1800,0x1900,0x2020,0x2120,0x2220,0x2320,0x2420,0x2520, 0x2000,0x2100,0x2200,0x2300,0x2400,0x2500,0x2600,0x2700, 0x2800,0x2900,0x3020,0x3120,0x3220,0x3320,0x3420,0x3520, 0x3000,0x3100,0x3200,0x3300,0x3400,0x3500,0x3600,0x3700, 0x3800,0x3900,0x4020,0x4120,0x4220,0x4320,0x4420,0x4520, 0x4000,0x4100,0x4200,0x4300,0x4400,0x4500,0x4600,0x4700, 0x4800,0x4900,0x5020,0x5120,0x5220,0x5320,0x5420,0x5520, 0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,0x5700, 0x5800,0x5900,0x6020,0x6120,0x6220,0x6320,0x6420,0x6520, 0x6000,0x6100,0x6200,0x6300,0x6400,0x6500,0x6600,0x6700, 0x6800,0x6900,0x7020,0x7120,0x7220,0x7320,0x7420,0x7520, 0x7000,0x7100,0x7200,0x7300,0x7400,0x7500,0x7600,0x7700, 0x7800,0x7900,0x8020,0x8120,0x8220,0x8320,0x8420,0x8520, 0x8000,0x8100,0x8200,0x8300,0x8400,0x8500,0x8600,0x8700, 0x8800,0x8900,0x9020,0x9120,0x9220,0x9320,0x9420,0x9520, 0x9000,0x9100,0x9200,0x9300,0x9400,0x9500,0x9600,0x9700, 0x9800,0x9900,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530, 0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710, 0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530, 0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710, 0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530, 0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710, 0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530, 0x3010,0x3110,0x3210,0x3310,0x3410,0x3510,0x3610,0x3710, 0x3810,0x3910,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530, 0x4010,0x4110,0x4210,0x4310,0x4410,0x4510,0x4610,0x4710, 0x4810,0x4910,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530, 0x5010,0x5110,0x5210,0x5310,0x5410,0x5510,0x5610,0x5710, 0x5810,0x5910,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530, 0x6010,0x6110,0x6210,0x6310,0x6410,0x6510,0x6610,0x6710, 0x6810,0x6910,0x7030,0x7130,0x7230,0x7330,0x7430,0x7530, 0x7010,0x7110,0x7210,0x7310,0x7410,0x7510,0x7610,0x7710, 0x7810,0x7910,0x8030,0x8130,0x8230,0x8330,0x8430,0x8530, 0x8010,0x8110,0x8210,0x8310,0x8410,0x8510,0x8610,0x8710, 0x8810,0x8910,0x9030,0x9130,0x9230,0x9330,0x9430,0x9530, 0x9010,0x9110,0x9210,0x9310,0x9410,0x9510,0x9610,0x9710, 0x9810,0x9910,0xA030,0xA130,0xA230,0xA330,0xA430,0xA530, 0xA010,0xA110,0xA210,0xA310,0xA410,0xA510,0xA610,0xA710, 0xA810,0xA910,0xB030,0xB130,0xB230,0xB330,0xB430,0xB530, 0xB010,0xB110,0xB210,0xB310,0xB410,0xB510,0xB610,0xB710, 0xB810,0xB910,0xC030,0xC130,0xC230,0xC330,0xC430,0xC530, 0xC010,0xC110,0xC210,0xC310,0xC410,0xC510,0xC610,0xC710, 0xC810,0xC910,0xD030,0xD130,0xD230,0xD330,0xD430,0xD530, 0xD010,0xD110,0xD210,0xD310,0xD410,0xD510,0xD610,0xD710, 0xD810,0xD910,0xE030,0xE130,0xE230,0xE330,0xE430,0xE530, 0xE010,0xE110,0xE210,0xE310,0xE410,0xE510,0xE610,0xE710, 0xE810,0xE910,0xF030,0xF130,0xF230,0xF330,0xF430,0xF530, 0xF010,0xF110,0xF210,0xF310,0xF410,0xF510,0xF610,0xF710, 0xF810,0xF910,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530, 0x0090,0x0110,0x0210,0x0310,0x0410,0x0510,0x0610,0x0710, 0x0810,0x0910,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530, 0x1010,0x1110,0x1210,0x1310,0x1410,0x1510,0x1610,0x1710, 0x1810,0x1910,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530, 0x2010,0x2110,0x2210,0x2310,0x2410,0x2510,0x2610,0x2710, 0x2810,0x2910,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530, 0x3010,0x3110,0x3210,0x3310,0x3410,0x3510,0x3610,0x3710, 0x3810,0x3910,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530, 0x4010,0x4110,0x4210,0x4310,0x4410,0x4510,0x4610,0x4710, 0x4810,0x4910,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530, 0x5010,0x5110,0x5210,0x5310,0x5410,0x5510,0x5610,0x5710, 0x5810,0x5910,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530, 0x0600,0x0700,0x0800,0x0900,0x0A00,0x0B00,0x0C00,0x0D00, 0x0E00,0x0F00,0x1020,0x1120,0x1220,0x1320,0x1420,0x1520, 0x1600,0x1700,0x1800,0x1900,0x1A00,0x1B00,0x1C00,0x1D00, 0x1E00,0x1F00,0x2020,0x2120,0x2220,0x2320,0x2420,0x2520, 0x2600,0x2700,0x2800,0x2900,0x2A00,0x2B00,0x2C00,0x2D00, 0x2E00,0x2F00,0x3020,0x3120,0x3220,0x3320,0x3420,0x3520, 0x3600,0x3700,0x3800,0x3900,0x3A00,0x3B00,0x3C00,0x3D00, 0x3E00,0x3F00,0x4020,0x4120,0x4220,0x4320,0x4420,0x4520, 0x4600,0x4700,0x4800,0x4900,0x4A00,0x4B00,0x4C00,0x4D00, 0x4E00,0x4F00,0x5020,0x5120,0x5220,0x5320,0x5420,0x5520, 0x5600,0x5700,0x5800,0x5900,0x5A00,0x5B00,0x5C00,0x5D00, 0x5E00,0x5F00,0x6020,0x6120,0x6220,0x6320,0x6420,0x6520, 0x6600,0x6700,0x6800,0x6900,0x6A00,0x6B00,0x6C00,0x6D00, 0x6E00,0x6F00,0x7020,0x7120,0x7220,0x7320,0x7420,0x7520, 0x7600,0x7700,0x7800,0x7900,0x7A00,0x7B00,0x7C00,0x7D00, 0x7E00,0x7F00,0x8020,0x8120,0x8220,0x8320,0x8420,0x8520, 0x8600,0x8700,0x8800,0x8900,0x8A00,0x8B00,0x8C00,0x8D00, 0x8E00,0x8F00,0x9020,0x9120,0x9220,0x9320,0x9420,0x9520, 0x9600,0x9700,0x9800,0x9900,0x9A00,0x9B00,0x9C00,0x9D00, 0x9E00,0x9F00,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530, 0x0610,0x0710,0x0810,0x0910,0x0A10,0x0B10,0x0C10,0x0D10, 0x0E10,0x0F10,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530, 0x1610,0x1710,0x1810,0x1910,0x1A10,0x1B10,0x1C10,0x1D10, 0x1E10,0x1F10,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530, 0x2610,0x2710,0x2810,0x2910,0x2A10,0x2B10,0x2C10,0x2D10, 0x2E10,0x2F10,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530, 0x3610,0x3710,0x3810,0x3910,0x3A10,0x3B10,0x3C10,0x3D10, 0x3E10,0x3F10,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530, 0x4610,0x4710,0x4810,0x4910,0x4A10,0x4B10,0x4C10,0x4D10, 0x4E10,0x4F10,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530, 0x5610,0x5710,0x5810,0x5910,0x5A10,0x5B10,0x5C10,0x5D10, 0x5E10,0x5F10,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530, 0x6610,0x6710,0x6810,0x6910,0x6A10,0x6B10,0x6C10,0x6D10, 0x6E10,0x6F10,0x7030,0x7130,0x7230,0x7330,0x7430,0x7530, 0x7610,0x7710,0x7810,0x7910,0x7A10,0x7B10,0x7C10,0x7D10, 0x7E10,0x7F10,0x8030,0x8130,0x8230,0x8330,0x8430,0x8530, 0x8610,0x8710,0x8810,0x8910,0x8A10,0x8B10,0x8C10,0x8D10, 0x8E10,0x8F10,0x9030,0x9130,0x9230,0x9330,0x9430,0x9530, 0x9610,0x9710,0x9810,0x9910,0x9A10,0x9B10,0x9C10,0x9D10, 0x9E10,0x9F10,0xA030,0xA130,0xA230,0xA330,0xA430,0xA530, 0xA610,0xA710,0xA810,0xA910,0xAA10,0xAB10,0xAC10,0xAD10, 0xAE10,0xAF10,0xB030,0xB130,0xB230,0xB330,0xB430,0xB530, 0xB610,0xB710,0xB810,0xB910,0xBA10,0xBB10,0xBC10,0xBD10, 0xBE10,0xBF10,0xC030,0xC130,0xC230,0xC330,0xC430,0xC530, 0xC610,0xC710,0xC810,0xC910,0xCA10,0xCB10,0xCC10,0xCD10, 0xCE10,0xCF10,0xD030,0xD130,0xD230,0xD330,0xD430,0xD530, 0xD610,0xD710,0xD810,0xD910,0xDA10,0xDB10,0xDC10,0xDD10, 0xDE10,0xDF10,0xE030,0xE130,0xE230,0xE330,0xE430,0xE530, 0xE610,0xE710,0xE810,0xE910,0xEA10,0xEB10,0xEC10,0xED10, 0xEE10,0xEF10,0xF030,0xF130,0xF230,0xF330,0xF430,0xF530, 0xF610,0xF710,0xF810,0xF910,0xFA10,0xFB10,0xFC10,0xFD10, 0xFE10,0xFF10,0x00B0,0x0130,0x0230,0x0330,0x0430,0x0530, 0x0610,0x0710,0x0810,0x0910,0x0A10,0x0B10,0x0C10,0x0D10, 0x0E10,0x0F10,0x1030,0x1130,0x1230,0x1330,0x1430,0x1530, 0x1610,0x1710,0x1810,0x1910,0x1A10,0x1B10,0x1C10,0x1D10, 0x1E10,0x1F10,0x2030,0x2130,0x2230,0x2330,0x2430,0x2530, 0x2610,0x2710,0x2810,0x2910,0x2A10,0x2B10,0x2C10,0x2D10, 0x2E10,0x2F10,0x3030,0x3130,0x3230,0x3330,0x3430,0x3530, 0x3610,0x3710,0x3810,0x3910,0x3A10,0x3B10,0x3C10,0x3D10, 0x3E10,0x3F10,0x4030,0x4130,0x4230,0x4330,0x4430,0x4530, 0x4610,0x4710,0x4810,0x4910,0x4A10,0x4B10,0x4C10,0x4D10, 0x4E10,0x4F10,0x5030,0x5130,0x5230,0x5330,0x5430,0x5530, 0x5610,0x5710,0x5810,0x5910,0x5A10,0x5B10,0x5C10,0x5D10, 0x5E10,0x5F10,0x6030,0x6130,0x6230,0x6330,0x6430,0x6530, 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0x1A60,0x1B60,0x1C60,0x1D60,0x1E60,0x1F60,0x2040,0x2140, 0x2240,0x2340,0x2440,0x2540,0x2640,0x2740,0x2840,0x2940, 0x2A60,0x2B60,0x2C60,0x2D60,0x2E60,0x2F60,0x3040,0x3140, 0x3240,0x3340,0x3440,0x3540,0x3640,0x3740,0x3840,0x3940, 0x3A60,0x3B60,0x3C60,0x3D60,0x3E60,0x3F60,0x4040,0x4140, 0x4240,0x4340,0x4440,0x4540,0x4640,0x4740,0x4840,0x4940, 0x4A60,0x4B60,0x4C60,0x4D60,0x4E60,0x4F60,0x5040,0x5140, 0x5240,0x5340,0x5440,0x5540,0x5640,0x5740,0x5840,0x5940, 0x5A60,0x5B60,0x5C60,0x5D60,0x5E60,0x5F60,0x6040,0x6140, 0x6240,0x6340,0x6440,0x6540,0x6640,0x6740,0x6840,0x6940, 0x6A60,0x6B60,0x6C60,0x6D60,0x6E60,0x6F60,0x7040,0x7140, 0x7240,0x7340,0x7440,0x7540,0x7640,0x7740,0x7840,0x7940, 0x7A60,0x7B60,0x7C60,0x7D60,0x7E60,0x7F60,0x8040,0x8140, 0x8240,0x8340,0x8440,0x8540,0x8640,0x8740,0x8840,0x8940, 0x8A60,0x8B60,0x8C60,0x8D60,0x8E60,0x8F60,0x9040,0x9140, 0x9240,0x9340,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950, 0x3A70,0x3B70,0x3C70,0x3D70,0x3E70,0x3F70,0x4050,0x4150, 0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950, 0x4A70,0x4B70,0x4C70,0x4D70,0x4E70,0x4F70,0x5050,0x5150, 0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950, 0x5A70,0x5B70,0x5C70,0x5D70,0x5E70,0x5F70,0x6050,0x6150, 0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950, 0x6A70,0x6B70,0x6C70,0x6D70,0x6E70,0x6F70,0x7050,0x7150, 0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950, 0x7A70,0x7B70,0x7C70,0x7D70,0x7E70,0x7F70,0x8050,0x8150, 0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950, 0x8A70,0x8B70,0x8C70,0x8D70,0x8E70,0x8F70,0x9050,0x9150, 0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950, 0x9A70,0x9B70,0x9C70,0x9D70,0x9E70,0x9F70,0xA050,0xA150, 0xA250,0xA350,0xA450,0xA550,0xA650,0xA750,0xA850,0xA950, 0xAA70,0xAB70,0xAC70,0xAD70,0xAE70,0xAF70,0xB050,0xB150, 0xB250,0xB350,0xB450,0xB550,0xB650,0xB750,0xB850,0xB950, 0xBA70,0xBB70,0xBC70,0xBD70,0xBE70,0xBF70,0xC050,0xC150, 0xC250,0xC350,0xC450,0xC550,0xC650,0xC750,0xC850,0xC950, 0xCA70,0xCB70,0xCC70,0xCD70,0xCE70,0xCF70,0xD050,0xD150, 0xD250,0xD350,0xD450,0xD550,0xD650,0xD750,0xD850,0xD950, 0xDA70,0xDB70,0xDC70,0xDD70,0xDE70,0xDF70,0xE050,0xE150, 0xE250,0xE350,0xE450,0xE550,0xE650,0xE750,0xE850,0xE950, 0xEA70,0xEB70,0xEC70,0xED70,0xEE70,0xEF70,0xF050,0xF150, 0xF250,0xF350,0xF450,0xF550,0xF650,0xF750,0xF850,0xF950, 0xFA70,0xFB70,0xFC70,0xFD70,0xFE70,0xFF70,0x00D0,0x0150, 0x0250,0x0350,0x0450,0x0550,0x0650,0x0750,0x0850,0x0950, 0x0A70,0x0B70,0x0C70,0x0D70,0x0E70,0x0F70,0x1050,0x1150, 0x1250,0x1350,0x1450,0x1550,0x1650,0x1750,0x1850,0x1950, 0x1A70,0x1B70,0x1C70,0x1D70,0x1E70,0x1F70,0x2050,0x2150, 0x2250,0x2350,0x2450,0x2550,0x2650,0x2750,0x2850,0x2950, 0x2A70,0x2B70,0x2C70,0x2D70,0x2E70,0x2F70,0x3050,0x3150, 0x3250,0x3350,0x3450,0x3550,0x3650,0x3750,0x3850,0x3950, 0x3A70,0x3B70,0x3C70,0x3D70,0x3E70,0x3F70,0x4050,0x4150, 0x4250,0x4350,0x4450,0x4550,0x4650,0x4750,0x4850,0x4950, 0x4A70,0x4B70,0x4C70,0x4D70,0x4E70,0x4F70,0x5050,0x5150, 0x5250,0x5350,0x5450,0x5550,0x5650,0x5750,0x5850,0x5950, 0x5A70,0x5B70,0x5C70,0x5D70,0x5E70,0x5F70,0x6050,0x6150, 0x6250,0x6350,0x6450,0x6550,0x6650,0x6750,0x6850,0x6950, 0x6A70,0x6B70,0x6C70,0x6D70,0x6E70,0x6F70,0x7050,0x7150, 0x7250,0x7350,0x7450,0x7550,0x7650,0x7750,0x7850,0x7950, 0x7A70,0x7B70,0x7C70,0x7D70,0x7E70,0x7F70,0x8050,0x8150, 0x8250,0x8350,0x8450,0x8550,0x8650,0x8750,0x8850,0x8950, 0x8A70,0x8B70,0x8C70,0x8D70,0x8E70,0x8F70,0x9050,0x9150, 0x9250,0x9350,0x9450,0x9550,0x9650,0x9750,0x9850,0x9950, }; u8 ZeroTable[] = { 0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0 }; #define GBSAVE_GAME_VERSION_1 1 #define GBSAVE_GAME_VERSION_2 2 #define GBSAVE_GAME_VERSION_3 3 #define GBSAVE_GAME_VERSION_4 4 #define GBSAVE_GAME_VERSION_5 5 #define GBSAVE_GAME_VERSION_6 6 #define GBSAVE_GAME_VERSION_7 7 #define GBSAVE_GAME_VERSION_8 8 #define GBSAVE_GAME_VERSION_9 9 #define GBSAVE_GAME_VERSION_10 10 #define GBSAVE_GAME_VERSION GBSAVE_GAME_VERSION_10 int inline gbGetValue(int min,int max,int v) { return (int)(min+(float)(max-min)*(2.0*(v/31.0)-(v/31.0)*(v/31.0))); } void gbGenFilter() { for (int r=0;r<32;r++) { for (int g=0;g<32;g++) { for (int b=0;b<32;b++) { int nr=gbGetValue(gbGetValue(4,14,g), gbGetValue(24,29,g),r)-4; int ng=gbGetValue(gbGetValue(4+gbGetValue(0,5,r), 14+gbGetValue(0,3,r),b), gbGetValue(24+gbGetValue(0,3,r), 29+gbGetValue(0,1,r),b),g)-4; int nb=gbGetValue(gbGetValue(4+gbGetValue(0,5,r), 14+gbGetValue(0,3,r),g), gbGetValue(24+gbGetValue(0,3,r), 29+gbGetValue(0,1,r),g),b)-4; gbColorFilter[(b<<10)|(g<<5)|r]=(nb<<10)|(ng<<5)|nr; } } } } bool gbIsGameboyRom(char * file) { if(strlen(file) > 4) { char * p = strrchr(file,'.'); if(p != NULL) { if(_stricmp(p, ".gb") == 0) return true; if(_stricmp(p, ".gbc") == 0) return true; if(_stricmp(p, ".cgb") == 0) return true; if(_stricmp(p, ".sgb") == 0) return true; } } return false; } void gbCopyMemory(u16 d, u16 s, int count) { while(count) { gbMemoryMap[d>>12][d & 0x0fff] = gbMemoryMap[s>>12][s & 0x0fff]; s++; d++; count--; } } void gbDoHdma() { gbCopyMemory(gbHdmaDestination, gbHdmaSource, 0x10); gbHdmaDestination += 0x10; gbHdmaSource += 0x10; register_HDMA2 += 0x10; if(register_HDMA2 == 0x00) register_HDMA1++; register_HDMA4 += 0x10; if(register_HDMA4 == 0x00) register_HDMA3++; if(gbHdmaDestination == 0x96b0) gbHdmaBytes = gbHdmaBytes; gbHdmaBytes -= 0x10; register_HDMA5--; if(register_HDMA5 == 0xff) gbHdmaOn = 0; } // fix for Harley and Lego Racers void gbCompareLYToLYC() { if(register_LY == register_LYC) { // mark that we have a match register_STAT |= 4; // check if we need an interrupt if((register_STAT & 0x40) && (register_IE & 2)) gbInterrupt |= 2; } else // no match register_STAT &= 0xfb; } void gbWriteMemory(register u16 address, register u8 value) { if(address < 0x8000) { #ifndef FINAL_VERSION if(memorydebug && (address>0x3fff || address < 0x2000)) { log("Memory register write %04x=%02x PC=%04x\n", address, value, PC.W); } #endif if(mapper) (*mapper)(address, value); return; } if(address < 0xa000) { gbMemoryMap[address>>12][address&0x0fff] = value; return; } if(address < 0xc000) { #ifndef FINAL_VERSION if(memorydebug) { log("Memory register write %04x=%02x PC=%04x\n", address, value, PC.W); } #endif if(mapper) (*mapperRAM)(address, value); return; } if(address < 0xfe00) { gbMemoryMap[address>>12][address & 0x0fff] = value; return; } if(address < 0xff00) { gbMemory[address] = value; return; } switch(address & 0x00ff) { case 0x00: { gbMemory[0xff00] = ((gbMemory[0xff00] & 0xcf) | (value & 0x30)); if(gbSgbMode) { gbSgbDoBitTransfer(value); } return; } case 0x01: { gbMemory[0xff01] = value; return; } // serial control case 0x02: { gbSerialOn = (value & 0x80); gbMemory[0xff02] = value; if(gbSerialOn) { gbSerialTicks = GBSERIAL_CLOCK_TICKS; #ifdef LINK_EMULATION if(linkConnected) { if(value & 1) { linkSendByte(0x100|gbMemory[0xFF01]); Sleep(5); } } #endif } gbSerialBits = 0; return; } // DIV register resets on any write case 0x04: { register_DIV = 0; return; } case 0x05: register_TIMA = value; return; case 0x06: register_TMA = value; return; // TIMER control case 0x07: { register_TAC = value; gbTimerOn = (value & 4); gbTimerMode = value & 3; // register_TIMA = register_TMA; switch(gbTimerMode) { case 0: gbTimerClockTicks = gbTimerTicks = GBTIMER_MODE_0_CLOCK_TICKS; break; case 1: gbTimerClockTicks = gbTimerTicks = GBTIMER_MODE_1_CLOCK_TICKS; break; case 2: gbTimerClockTicks = gbTimerTicks = GBTIMER_MODE_2_CLOCK_TICKS; break; case 3: gbTimerClockTicks = gbTimerTicks = GBTIMER_MODE_3_CLOCK_TICKS; break; } return; } case 0x0f: { register_IF = value; gbInterrupt = value; return; } case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: { SOUND_EVENT(address,value); return; } case 0x40: { int lcdChange = (register_LCDC & 0x80) ^ (value & 0x80); if(lcdChange) { if(value & 0x80) { gbLcdTicks = GBLCD_MODE_1_CLOCK_TICKS; gbLcdMode = 0; register_STAT &= 0xfc; register_LY = 0x00; } else { gbLcdTicks = 0; gbLcdMode = 0; register_STAT &= 0xfc; register_LY = 0x00; } // compareLYToLYC(); } // don't draw the window if it was not enabled and not being drawn before if(!(register_LCDC & 0x20) && (value & 0x20) && gbWindowLine == -1 && register_LY > register_WY) gbWindowLine = 144; register_LCDC = value; return; } // STAT case 0x41: { //register_STAT = (register_STAT & 0x87) | // (value & 0x7c); register_STAT = (value & 0xf8) | (register_STAT & 0x07); // fix ? // GB bug from Devrs FAQ if(!gbCgbMode && (register_LCDC & 0x80) && gbLcdMode < 2) gbInterrupt |= 2; return; } // SCY case 0x42: { register_SCY = value; return; } // SCX case 0x43: { register_SCX = value; return; } // LY case 0x44: { // read only return; } // LYC case 0x45: { register_LYC = value; if((register_LCDC & 0x80)) { gbCompareLYToLYC(); } return; } // DMA! case 0x46: { int source = value * 0x0100; gbCopyMemory(0xfe00, source, 0xa0); register_DMA = value; return; } // BGP case 0x47: { gbBgp[0] = value & 0x03; gbBgp[1] = (value & 0x0c)>>2; gbBgp[2] = (value & 0x30)>>4; gbBgp[3] = (value & 0xc0)>>6; break; } // OBP0 case 0x48: { gbObp0[0] = value & 0x03; gbObp0[1] = (value & 0x0c)>>2; gbObp0[2] = (value & 0x30)>>4; gbObp0[3] = (value & 0xc0)>>6; break; } // OBP1 case 0x49: { gbObp1[0] = value & 0x03; gbObp1[1] = (value & 0x0c)>>2; gbObp1[2] = (value & 0x30)>>4; gbObp1[3] = (value & 0xc0)>>6; break; } case 0x4a: register_WY = value; return; case 0x4b: register_WX = value; return; // KEY1 case 0x4d: { if(gbCgbMode) { gbMemory[0xff4d] = (gbMemory[0xff4d] & 0x80) | (value & 1); return; } } break; // VBK case 0x4f: { if(gbCgbMode) { value = value & 1; if(value == gbVramBank) return; int vramAddress = value * 0x2000; gbMemoryMap[0x08] = &gbVram[vramAddress]; gbMemoryMap[0x09] = &gbVram[vramAddress + 0x1000]; gbVramBank = value; register_VBK = value; } return; } break; // HDMA1 case 0x51: { if(gbCgbMode) { if(value > 0x7f && value < 0xa0) value = 0; gbHdmaSource = (value << 8) | (register_HDMA2 & 0xf0); register_HDMA1 = value; return; } } break; // HDMA2 case 0x52: { if(gbCgbMode) { value = value & 0xf0; gbHdmaSource = (register_HDMA1 << 8) | (value); register_HDMA2 = value; return; } } break; // HDMA3 case 0x53: { if(gbCgbMode) { value = value & 0x1f; gbHdmaDestination = (value << 8) | (register_HDMA4 & 0xf0); gbHdmaDestination += 0x8000; register_HDMA3 = value; return; } } break; // HDMA4 case 0x54: { if(gbCgbMode) { value = value & 0xf0; gbHdmaDestination = ((register_HDMA3 & 0x1f) << 8) | value; gbHdmaDestination += 0x8000; register_HDMA4 = value; return; } } break; // HDMA5 case 0x55: { if(gbCgbMode) { gbHdmaBytes = 16 + (value & 0x7f) * 16; if(gbHdmaOn) { if(value & 0x80) { register_HDMA5 = (value & 0x7f); } else { register_HDMA5 = 0xff; gbHdmaOn = 0; } } else { if(value & 0x80) { gbHdmaOn = 1; register_HDMA5 = value & 0x7f; if(gbLcdMode == 0) gbDoHdma(); } else { // we need to take the time it takes to complete the transfer into // account... according to GB DEV FAQs, the setup time is the same // for single and double speed, but the actual transfer takes the // same time if(gbSpeed) gbDmaTicks = 231 + 16 * (value & 0x7f); else gbDmaTicks = 231 + 8 * (value & 0x7f); gbCopyMemory(gbHdmaDestination, gbHdmaSource, gbHdmaBytes); gbHdmaDestination += gbHdmaBytes; gbHdmaSource += gbHdmaBytes; register_HDMA3 = ((gbHdmaDestination - 0x8000) >> 8) & 0x1f; register_HDMA4 = gbHdmaDestination & 0xf0; register_HDMA1 = (gbHdmaSource >> 8) & 0xff; register_HDMA2 = gbHdmaSource & 0xf0; } } return; } } break; // BCPS case 0x68: { if(gbCgbMode) { int paletteIndex = (value & 0x3f) >> 1; int paletteHiLo = (value & 0x01); gbMemory[0xff68] = value; gbMemory[0xff69] = (paletteHiLo ? (gbPalette[paletteIndex] >> 8) : (gbPalette[paletteIndex] & 0x00ff)); return; } } break; // BCPD case 0x69: { if(gbCgbMode) { int v = gbMemory[0xff68]; int paletteIndex = (v & 0x3f) >> 1; int paletteHiLo = (v & 0x01); gbMemory[0xff69] = value; gbPalette[paletteIndex] = (paletteHiLo ? ((value << 8) | (gbPalette[paletteIndex] & 0xff)) : ((gbPalette[paletteIndex] & 0xff00) | (value))) & 0x7fff; if(gbMemory[0xff68] & 0x80) { int index = ((gbMemory[0xff68] & 0x3f) + 1) & 0x3f; gbMemory[0xff68] = (gbMemory[0xff68] & 0x80) | index; gbMemory[0xff69] = (index & 1 ? (gbPalette[index>>1] >> 8) : (gbPalette[index>>1] & 0x00ff)); } return; } } break; // OCPS case 0x6a: { if(gbCgbMode) { int paletteIndex = (value & 0x3f) >> 1; int paletteHiLo = (value & 0x01); paletteIndex += 32; gbMemory[0xff6a] = value; gbMemory[0xff6b] = (paletteHiLo ? (gbPalette[paletteIndex] >> 8) : (gbPalette[paletteIndex] & 0x00ff)); return; } } break; // OCPD case 0x6b: { if(gbCgbMode) { int v = gbMemory[0xff6a]; int paletteIndex = (v & 0x3f) >> 1; int paletteHiLo = (v & 0x01); paletteIndex += 32; gbMemory[0xff6b] = value; gbPalette[paletteIndex] = (paletteHiLo ? ((value << 8) | (gbPalette[paletteIndex] & 0xff)) : ((gbPalette[paletteIndex] & 0xff00) | (value))) & 0x7fff; if(gbMemory[0xff6a] & 0x80) { int index = ((gbMemory[0xff6a] & 0x3f) + 1) & 0x3f; gbMemory[0xff6a] = (gbMemory[0xff6a] & 0x80) | index; gbMemory[0xff6b] = (index & 1 ? (gbPalette[(index>>1) + 32] >> 8) : (gbPalette[(index>>1) + 32] & 0x00ff)); } return; } } break; // SVBK case 0x70: { if(gbCgbMode) { value = value & 7; int bank = value; if(value == 0) bank = 1; if(bank == gbWramBank) return; int wramAddress = bank * 0x1000; gbMemoryMap[0x0d] = &gbWram[wramAddress]; gbWramBank = bank; register_SVBK = value; return; } } break; case 0xff: { register_IE = value; register_IF &= value; return; } } gbMemory[address] = value; } u8 gbReadOpcode(register u16 address) { if(gbCheatMap[address]) return gbCheatRead(address); switch(address & 0xf000) { case 0x0a: case 0x0b: if(mapperReadRAM) return mapperReadRAM(address); break; case 0x0f: if(address > 0xff00) { switch(address & 0x00ff) { case 0x04: return register_DIV; case 0x05: return register_TIMA; case 0x06: return register_TMA; case 0x07: return (0xf8 | register_TAC); case 0x0f: return (0xe0 | register_IF); case 0x40: return register_LCDC; case 0x41: return (0x80 | register_STAT); case 0x42: return register_SCY; case 0x43: return register_SCX; case 0x44: return register_LY; case 0x45: return register_LYC; case 0x46: return register_DMA; case 0x4a: return register_WY; case 0x4b: return register_WX; case 0x4f: return (0xfe | register_VBK); case 0x51: return register_HDMA1; case 0x52: return register_HDMA2; case 0x53: return register_HDMA3; case 0x54: return register_HDMA4; case 0x55: return register_HDMA5; case 0x70: return (0xf8 | register_SVBK); case 0xff: return register_IE; } } break; } return gbMemoryMap[address>>12][address & 0x0fff]; } u8 gbReadMemory(register u16 address) { if(gbCheatMap[address]) return gbCheatRead(address); if(address < 0xa000) return gbMemoryMap[address>>12][address&0x0fff]; if(address < 0xc000) { #ifndef FINAL_VERSION if(memorydebug) { log("Memory register read %04x PC=%04x\n", address, PC.W); } #endif if(mapperReadRAM) return mapperReadRAM(address); return gbMemoryMap[address>>12][address & 0x0fff]; } if(address >= 0xff00) { switch(address & 0x00ff) { case 0x00: { if(gbSgbMode) { gbSgbReadingController |= 4; gbSgbResetPacketState(); } int b = gbMemory[0xff00]; if((b & 0x30) == 0x20) { b &= 0xf0; int joy = 0; if(gbSgbMode && gbSgbMultiplayer) { switch(gbSgbNextController) { case 0x0f: joy = 0; break; case 0x0e: joy = 1; break; case 0x0d: joy = 2; break; case 0x0c: joy = 3; break; default: joy = 0; } } int joystate = gbJoymask[joy]; if(!(joystate & 128)) b |= 0x08; if(!(joystate & 64)) b |= 0x04; if(!(joystate & 32)) b |= 0x02; if(!(joystate & 16)) b |= 0x01; gbMemory[0xff00] = b; } else if((b & 0x30) == 0x10) { b &= 0xf0; int joy = 0; if(gbSgbMode && gbSgbMultiplayer) { switch(gbSgbNextController) { case 0x0f: joy = 0; break; case 0x0e: joy = 1; break; case 0x0d: joy = 2; break; case 0x0c: joy = 3; break; default: joy = 0; } } int joystate = gbJoymask[joy]; if(!(joystate & 8)) b |= 0x08; if(!(joystate & 4)) b |= 0x04; if(!(joystate & 2)) b |= 0x02; if(!(joystate & 1)) b |= 0x01; gbMemory[0xff00] = b; } else { if(gbSgbMode && gbSgbMultiplayer) { gbMemory[0xff00] = 0xf0 | gbSgbNextController; } else { gbMemory[0xff00] = 0xff; } } } return gbMemory[0xff00]; break; case 0x01: return gbMemory[0xff01]; case 0x04: return register_DIV; case 0x05: return register_TIMA; case 0x06: return register_TMA; case 0x07: return (0xf8 | register_TAC); case 0x0f: return (0xe0 | register_IF); case 0x40: return register_LCDC; case 0x41: return (0x80 | register_STAT); case 0x42: return register_SCY; case 0x43: return register_SCX; case 0x44: return register_LY; case 0x45: return register_LYC; case 0x46: return register_DMA; case 0x4a: return register_WY; case 0x4b: return register_WX; case 0x4f: return (0xfe | register_VBK); case 0x51: return register_HDMA1; case 0x52: return register_HDMA2; case 0x53: return register_HDMA3; case 0x54: return register_HDMA4; case 0x55: return register_HDMA5; case 0x70: return (0xf8 | register_SVBK); case 0xff: return register_IE; } } return gbMemoryMap[address>>12][address & 0x0fff]; } void gbVblank_interrupt() { if(IFF & 0x80) { PC.W++; IFF &= 0x7f; } gbInterrupt &= 0xfe; IFF &= 0x7e; register_IF &= 0xfe; gbWriteMemory(--SP.W, PC.B.B1); gbWriteMemory(--SP.W, PC.B.B0); PC.W = 0x40; } void gbLcd_interrupt() { if(IFF & 0x80) { PC.W++; IFF &= 0x7f; } gbInterrupt &= 0xfd; IFF &= 0x7e; register_IF &= 0xfd; gbWriteMemory(--SP.W, PC.B.B1); gbWriteMemory(--SP.W, PC.B.B0); PC.W = 0x48; } void gbTimer_interrupt() { if(IFF & 0x80) { PC.W++; IFF &= 0x7f; } IFF &= 0x7e; gbInterrupt &= 0xfb; register_IF &= 0xfb; gbWriteMemory(--SP.W, PC.B.B1); gbWriteMemory(--SP.W, PC.B.B0); PC.W = 0x50; } void gbSerial_interrupt() { if(IFF & 0x80) { PC.W++; IFF &= 0x7f; } IFF &= 0x7e; gbInterrupt &= 0xf7; register_IF &= 0xf7; gbWriteMemory(--SP.W, PC.B.B1); gbWriteMemory(--SP.W, PC.B.B0); PC.W = 0x58; } void gbJoypad_interrupt() { if(IFF & 0x80) { PC.W++; IFF &= 0x7f; } IFF &= 0x7e; gbInterrupt &= 0xef; register_IF &= 0xef; gbWriteMemory(--SP.W, PC.B.B1); gbWriteMemory(--SP.W, PC.B.B0); PC.W = 0x60; } void gbSpeedSwitch() { if(gbSpeed == 0) { gbSpeed = 1; GBLCD_MODE_0_CLOCK_TICKS = 51 * 2; //127; //51 * 2; GBLCD_MODE_1_CLOCK_TICKS = 1140 * 2; GBLCD_MODE_2_CLOCK_TICKS = 20 * 2; //52; //20 * 2; GBLCD_MODE_3_CLOCK_TICKS = 43 * 2; //99; //43 * 2; GBDIV_CLOCK_TICKS = 64 * 2; GBLY_INCREMENT_CLOCK_TICKS = 114 * 2; GBTIMER_MODE_0_CLOCK_TICKS = 256; //256*2; GBTIMER_MODE_1_CLOCK_TICKS = 4; //4*2; GBTIMER_MODE_2_CLOCK_TICKS = 16; //16*2; GBTIMER_MODE_3_CLOCK_TICKS = 64; //64*2; GBSERIAL_CLOCK_TICKS = 128 * 2; gbDivTicks *= 2; gbLcdTicks *= 2; gbLcdLYIncrementTicks *= 2; // timerTicks *= 2; // timerClockTicks *= 2; gbSerialTicks *= 2; SOUND_CLOCK_TICKS = soundQuality * 24 * 2; soundTicks *= 2; // synchronizeTicks *= 2; // SYNCHRONIZE_CLOCK_TICKS *= 2; } else { gbSpeed = 0; GBLCD_MODE_0_CLOCK_TICKS = 51; GBLCD_MODE_1_CLOCK_TICKS = 1140; GBLCD_MODE_2_CLOCK_TICKS = 20; GBLCD_MODE_3_CLOCK_TICKS = 43; GBDIV_CLOCK_TICKS = 64; GBLY_INCREMENT_CLOCK_TICKS = 114; GBTIMER_MODE_0_CLOCK_TICKS = 256; GBTIMER_MODE_1_CLOCK_TICKS = 4; GBTIMER_MODE_2_CLOCK_TICKS = 16; GBTIMER_MODE_3_CLOCK_TICKS = 64; GBSERIAL_CLOCK_TICKS = 128; gbDivTicks /= 2; gbLcdTicks /= 2; gbLcdLYIncrementTicks /= 2; // timerTicks /= 2; // timerClockTicks /= 2; gbSerialTicks /= 2; SOUND_CLOCK_TICKS = soundQuality * 24; soundTicks /= 2; // synchronizeTicks /= 2; // SYNCHRONIZE_CLOCK_TICKS /= 2; } } void gbReset() { SP.W = 0xfffe; AF.W = 0x01b0; BC.W = 0x0013; DE.W = 0x00d8; HL.W = 0x014d; PC.W = 0x0100; IFF = 0; gbInterrupt = 1; gbInterruptWait = 0; register_DIV = 0; register_TIMA = 0; register_TMA = 0; register_TAC = 0; register_IF = 1; register_LCDC = 0x91; register_STAT = 0; register_SCY = 0; register_SCX = 0; register_LY = 0; register_LYC = 0; register_DMA = 0; register_WY = 0; register_WX = 0; register_VBK = 0; register_HDMA1 = 0; register_HDMA2 = 0; register_HDMA3 = 0; register_HDMA4 = 0; register_HDMA5 = 0; register_SVBK = 0; register_IE = 0; if(gbCgbMode) { if(gbSgbMode) { if(gbEmulatorType == 5) AF.W = 0xffb0; else AF.W = 0x01b0; BC.W = 0x0013; DE.W = 0x00d8; HL.W = 0x014d; for(int i = 0; i < 8; i++) gbPalette[i] = systemGbPalette[gbPaletteOption*8+i]; } else { AF.W = 0x11b0; BC.W = 0x0000; DE.W = 0xff56; HL.W = 0x000d; } if(gbEmulatorType == 4) BC.B.B1 |= 0x01; register_HDMA5 = 0xff; gbMemory[0xff68] = 0xc0; gbMemory[0xff6a] = 0xc0; } else { for(int i = 0; i < 8; i++) gbPalette[i] = systemGbPalette[gbPaletteOption*8+i]; } if(gbSpeed) { gbSpeedSwitch(); gbMemory[0xff4d] = 0; } gbDivTicks = GBDIV_CLOCK_TICKS; gbLcdMode = 2; gbLcdTicks = GBLCD_MODE_2_CLOCK_TICKS; gbLcdLYIncrementTicks = 0; gbTimerTicks = 0; gbTimerClockTicks = 0; gbSerialTicks = 0; gbSerialBits = 0; gbSerialOn = 0; gbWindowLine = -1; gbTimerOn = 0; gbTimerMode = 0; // gbSynchronizeTicks = GBSYNCHRONIZE_CLOCK_TICKS; gbSpeed = 0; gbJoymask[0] = gbJoymask[1] = gbJoymask[2] = gbJoymask[3] = 0; if(gbCgbMode) { gbSpeed = 0; gbHdmaOn = 0; gbHdmaSource = 0x0000; gbHdmaDestination = 0x8000; gbVramBank = 0; gbWramBank = 1; register_LY = 0x90; gbLcdMode = 1; for(int i = 0; i < 64; i++) gbPalette[i] = 0x7fff; } if(gbSgbMode) { gbSgbReset(); } for(int i =0; i < 4; i++) gbBgp[i] = gbObp0[i] = gbObp1[i] = i; memset(&gbDataMBC1,0, sizeof(gbDataMBC1)); gbDataMBC1.mapperROMBank = 1; gbDataMBC2.mapperRAMEnable = 0; gbDataMBC2.mapperROMBank = 1; memset(&gbDataMBC3,0, 6 * sizeof(int)); gbDataMBC3.mapperROMBank = 1; memset(&gbDataMBC5, 0, sizeof(gbDataMBC5)); gbDataMBC5.mapperROMBank = 1; memset(&gbDataHuC1, 0, sizeof(gbDataHuC1)); gbDataHuC1.mapperROMBank = 1; memset(&gbDataHuC3, 0, sizeof(gbDataHuC3)); gbDataHuC3.mapperROMBank = 1; gbMemoryMap[0x00] = &gbRom[0x0000]; gbMemoryMap[0x01] = &gbRom[0x1000]; gbMemoryMap[0x02] = &gbRom[0x2000]; gbMemoryMap[0x03] = &gbRom[0x3000]; gbMemoryMap[0x04] = &gbRom[0x4000]; gbMemoryMap[0x05] = &gbRom[0x5000]; gbMemoryMap[0x06] = &gbRom[0x6000]; gbMemoryMap[0x07] = &gbRom[0x7000]; if(gbCgbMode) { gbMemoryMap[0x08] = &gbVram[0x0000]; gbMemoryMap[0x09] = &gbVram[0x1000]; gbMemoryMap[0x0a] = &gbMemory[0xa000]; gbMemoryMap[0x0b] = &gbMemory[0xb000]; gbMemoryMap[0x0c] = &gbMemory[0xc000]; gbMemoryMap[0x0d] = &gbWram[0x1000]; gbMemoryMap[0x0e] = &gbMemory[0xe000]; gbMemoryMap[0x0f] = &gbMemory[0xf000]; } else { gbMemoryMap[0x08] = &gbMemory[0x8000]; gbMemoryMap[0x09] = &gbMemory[0x9000]; gbMemoryMap[0x0a] = &gbMemory[0xa000]; gbMemoryMap[0x0b] = &gbMemory[0xb000]; gbMemoryMap[0x0c] = &gbMemory[0xc000]; gbMemoryMap[0x0d] = &gbMemory[0xd000]; gbMemoryMap[0x0e] = &gbMemory[0xe000]; gbMemoryMap[0x0f] = &gbMemory[0xf000]; } if(gbRam) { gbMemoryMap[0x0a] = &gbRam[0x0000]; gbMemoryMap[0x0b] = &gbRam[0x1000]; } gbSoundReset(); systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED; gbLastTime = systemGetClock(); gbFrameCount = 0; } void gbWriteSaveMBC1(const char * name) { FILE* gzFile = gen_fopen(name,"wb"); if(gzFile == NULL) { systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name); return; } gen_fwrite(gbRam, 1, gbRamSize, gzFile); gen_fclose(gzFile); } void gbWriteSaveMBC2(const char * name) { FILE* file = gen_fopen(name, "wb"); if(file == NULL) { systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name); return; } gen_fwrite(&gbMemory[0xa000], 1, 256, file); gen_fclose(file); } void gbWriteSaveMBC3(const char * name, bool extendedSave) { FILE* gzFile = gen_fopen(name,"wb"); if(gzFile == NULL) { systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name); return; } gen_fwrite(gbRam, 1, gbRamSize, gzFile); if(extendedSave) gen_fwrite(&gbDataMBC3.mapperSeconds, 1, 10*sizeof(int) + sizeof(time_t), gzFile); gen_fclose(gzFile); } void gbWriteSaveMBC5(const char * name) { FILE* gzFile = gen_fopen(name,"wb"); if(gzFile == NULL) { systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name); return; } gen_fwrite(gbRam, 1, gbRamSize, gzFile); gen_fclose(gzFile); } void gbWriteSaveMBC7(const char * name) { FILE* file = gen_fopen(name, "wb"); if(file == NULL) { systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), name); return; } gen_fwrite(&gbMemory[0xa000], 1, 256, file); gen_fclose(file); } bool gbReadSaveMBC1(const char * name) { gzFile gzFile = gzopen(name, "rb"); if(gzFile == NULL) { return false; } int read = gzread(gzFile, gbRam, gbRamSize); if(read != gbRamSize) { systemMessage(MSG_FAILED_TO_READ_SGM, N_("Failed to read complete save game %s (%d)"), name, read); gzclose(gzFile); return false; } gzclose(gzFile); return true; } bool gbReadSaveMBC2(const char * name) { FILE* file = gen_fopen(name, "rb"); if(file == NULL) { return false; } int read = gen_fread(&gbMemory[0xa000], 1, 256, file); if(read != 256) { systemMessage(MSG_FAILED_TO_READ_SGM, N_("Failed to read complete save game %s (%d)"), name, read); gen_fclose(file); return false; } gen_fclose(file); return true; } bool gbReadSaveMBC3(const char * name) { gzFile gzFile = gzopen(name, "rb"); if(gzFile == NULL) { return false; } int read = gzread(gzFile, gbRam, gbRamSize); bool res = true; if(read != gbRamSize) { systemMessage(MSG_FAILED_TO_READ_SGM, N_("Failed to read complete save game %s (%d)"), name, read); } else { read = gzread(gzFile, &gbDataMBC3.mapperSeconds, sizeof(int)*10 + sizeof(time_t)); if(read != (sizeof(int)*10 + sizeof(time_t)) && read != 0) { systemMessage(MSG_FAILED_TO_READ_RTC, N_("Failed to read RTC from save game %s (continuing)"), name); res = false; } } gzclose(gzFile); return res; } bool gbReadSaveMBC5(const char * name) { gzFile gzFile = gzopen(name, "rb"); if(gzFile == NULL) { return false; } int read = gzread(gzFile, gbRam, gbRamSize); if(read != gbRamSize) { systemMessage(MSG_FAILED_TO_READ_SGM, N_("Failed to read complete save game %s (%d)"), name, read); gzclose(gzFile); return false; } gzclose(gzFile); return true; } bool gbReadSaveMBC7(const char * name) { FILE* file = gen_fopen(name, "rb"); if(file == NULL) { return false; } int read = gen_fread(&gbMemory[0xa000], 1, 256, file); if(read != 256) { systemMessage(MSG_FAILED_TO_READ_SGM, N_("Failed to read complete save game %s (%d)"), name, read); gen_fclose(file); return false; } gen_fclose(file); return true; } void gbInit() { gbGenFilter(); gbSgbInit(); gbMemory = (u8 *)malloc(65536); memset(gbMemory,0, 65536); pix = (u8 *)calloc(1,4*257*226); gbLineBuffer = (u16 *)malloc(160 * sizeof(u16)); } bool gbWriteBatteryFile(const char *file, bool extendedSave) { if(gbBattery) { int type = gbRom[0x147]; switch(type) { case 0x03: gbWriteSaveMBC1(file); break; case 0x06: gbWriteSaveMBC2(file); break; case 0x0f: case 0x10: case 0x13: gbWriteSaveMBC3(file, extendedSave); break; case 0x1b: case 0x1e: gbWriteSaveMBC5(file); break; case 0x22: gbWriteSaveMBC7(file); break; case 0xff: gbWriteSaveMBC1(file); break; } } return true; } bool gbWriteBatteryFile(const char *file) { gbWriteBatteryFile(file, true); return true; } bool gbReadBatteryFile(const char *file) { bool res = false; if(gbBattery) { int type = gbRom[0x147]; switch(type) { case 0x03: res = gbReadSaveMBC1(file); break; case 0x06: res = gbReadSaveMBC2(file); break; case 0x0f: case 0x10: case 0x13: if(!gbReadSaveMBC3(file)) { time(&gbDataMBC3.mapperLastTime); struct tm *lt; lt = localtime(&gbDataMBC3.mapperLastTime); gbDataMBC3.mapperSeconds = lt->tm_sec; gbDataMBC3.mapperMinutes = lt->tm_min; gbDataMBC3.mapperHours = lt->tm_hour; gbDataMBC3.mapperDays = lt->tm_yday & 255; gbDataMBC3.mapperControl = (gbDataMBC3.mapperControl & 0xfe) | (lt->tm_yday > 255 ? 1: 0); res = false; break; } res = true; break; case 0x1b: case 0x1e: res = gbReadSaveMBC5(file); break; case 0x22: res = gbReadSaveMBC7(file); case 0xff: res = gbReadSaveMBC1(file); break; } } systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED; return res; } bool gbReadGSASnapshot(const char *fileName) { FILE* file = gen_fopen(fileName, "rb"); if(!file) { systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), fileName); return false; } // long size = ftell(file); gen_fseek(file, 0x4, SEEK_SET); char buffer[16]; char buffer2[16]; gen_fread(buffer, 1, 15, file); buffer[15] = 0; memcpy(buffer2, &gbRom[0x134], 15); buffer2[15] = 0; if(memcmp(buffer, buffer2, 15)) { systemMessage(MSG_CANNOT_IMPORT_SNAPSHOT_FOR, N_("Cannot import snapshot for %s. Current game is %s"), buffer, buffer2); gen_fclose(file); return false; } gen_fseek(file, 0x13, SEEK_SET); int read = 0; int toRead = 0; switch(gbRom[0x147]) { case 0x03: case 0x0f: case 0x10: case 0x13: case 0x1b: case 0x1e: case 0xff: read = gen_fread(gbRam, 1, gbRamSize, file); toRead = gbRamSize; break; case 0x06: case 0x22: read = gen_fread(&gbMemory[0xa000],1,256,file); toRead = 256; break; default: systemMessage(MSG_UNSUPPORTED_SNAPSHOT_FILE, N_("Unsupported snapshot file %s"), fileName); gen_fclose(file); return false; } gen_fclose(file); gbReset(); return true; } variable_desc gbSaveGameStruct[] = { { &PC.W, sizeof(u16) }, { &SP.W, sizeof(u16) }, { &AF.W, sizeof(u16) }, { &BC.W, sizeof(u16) }, { &DE.W, sizeof(u16) }, { &HL.W, sizeof(u16) }, { &IFF, sizeof(u8) }, { &GBLCD_MODE_0_CLOCK_TICKS, sizeof(int) }, { &GBLCD_MODE_1_CLOCK_TICKS, sizeof(int) }, { &GBLCD_MODE_2_CLOCK_TICKS, sizeof(int) }, { &GBLCD_MODE_3_CLOCK_TICKS, sizeof(int) }, { &GBDIV_CLOCK_TICKS, sizeof(int) }, { &GBLY_INCREMENT_CLOCK_TICKS, sizeof(int) }, { &GBTIMER_MODE_0_CLOCK_TICKS, sizeof(int) }, { &GBTIMER_MODE_1_CLOCK_TICKS, sizeof(int) }, { &GBTIMER_MODE_2_CLOCK_TICKS, sizeof(int) }, { &GBTIMER_MODE_3_CLOCK_TICKS, sizeof(int) }, { &GBSERIAL_CLOCK_TICKS, sizeof(int) }, { &GBSYNCHRONIZE_CLOCK_TICKS, sizeof(int) }, { &gbDivTicks, sizeof(int) }, { &gbLcdMode, sizeof(int) }, { &gbLcdTicks, sizeof(int) }, { &gbLcdLYIncrementTicks, sizeof(int) }, { &gbTimerTicks, sizeof(int) }, { &gbTimerClockTicks, sizeof(int) }, { &gbSerialTicks, sizeof(int) }, { &gbSerialBits, sizeof(int) }, { &gbInterrupt, sizeof(int) }, { &gbInterruptWait, sizeof(int) }, { &gbSynchronizeTicks, sizeof(int) }, { &gbTimerOn, sizeof(int) }, { &gbTimerMode, sizeof(int) }, { &gbSerialOn, sizeof(int) }, { &gbWindowLine, sizeof(int) }, { &gbCgbMode, sizeof(int) }, { &gbVramBank, sizeof(int) }, { &gbWramBank, sizeof(int) }, { &gbHdmaSource, sizeof(int) }, { &gbHdmaDestination, sizeof(int) }, { &gbHdmaBytes, sizeof(int) }, { &gbHdmaOn, sizeof(int) }, { &gbSpeed, sizeof(int) }, { &gbSgbMode, sizeof(int) }, { ®ister_DIV, sizeof(u8) }, { ®ister_TIMA, sizeof(u8) }, { ®ister_TMA, sizeof(u8) }, { ®ister_TAC, sizeof(u8) }, { ®ister_IF, sizeof(u8) }, { ®ister_LCDC, sizeof(u8) }, { ®ister_STAT, sizeof(u8) }, { ®ister_SCY, sizeof(u8) }, { ®ister_SCX, sizeof(u8) }, { ®ister_LY, sizeof(u8) }, { ®ister_LYC, sizeof(u8) }, { ®ister_DMA, sizeof(u8) }, { ®ister_WY, sizeof(u8) }, { ®ister_WX, sizeof(u8) }, { ®ister_VBK, sizeof(u8) }, { ®ister_HDMA1, sizeof(u8) }, { ®ister_HDMA2, sizeof(u8) }, { ®ister_HDMA3, sizeof(u8) }, { ®ister_HDMA4, sizeof(u8) }, { ®ister_HDMA5, sizeof(u8) }, { ®ister_SVBK, sizeof(u8) }, { ®ister_IE , sizeof(u8) }, { &gbBgp[0], sizeof(u8) }, { &gbBgp[1], sizeof(u8) }, { &gbBgp[2], sizeof(u8) }, { &gbBgp[3], sizeof(u8) }, { &gbObp0[0], sizeof(u8) }, { &gbObp0[1], sizeof(u8) }, { &gbObp0[2], sizeof(u8) }, { &gbObp0[3], sizeof(u8) }, { &gbObp1[0], sizeof(u8) }, { &gbObp1[1], sizeof(u8) }, { &gbObp1[2], sizeof(u8) }, { &gbObp1[3], sizeof(u8) }, { NULL, 0 } }; static bool gbWriteSaveState(gzFile gzFile) { utilWriteInt(gzFile, GBSAVE_GAME_VERSION); utilGzWrite(gzFile, &gbRom[0x134], 15); utilWriteData(gzFile, gbSaveGameStruct); utilGzWrite(gzFile, &IFF, 2); if(gbSgbMode) { gbSgbSaveGame(gzFile); } utilGzWrite(gzFile, &gbDataMBC1, sizeof(gbDataMBC1)); utilGzWrite(gzFile, &gbDataMBC2, sizeof(gbDataMBC2)); utilGzWrite(gzFile, &gbDataMBC3, sizeof(gbDataMBC3)); utilGzWrite(gzFile, &gbDataMBC5, sizeof(gbDataMBC5)); utilGzWrite(gzFile, &gbDataHuC1, sizeof(gbDataHuC1)); utilGzWrite(gzFile, &gbDataHuC3, sizeof(gbDataHuC3)); // not saved anymore // gzwrite(gzFile, pix, 256*224*sizeof(u16)); utilGzWrite(gzFile, gbPalette, 128 * sizeof(u16)); // todo: remove utilGzWrite(gzFile, gbPalette, 128 * sizeof(u16)); utilGzWrite(gzFile, &gbMemory[0x8000], 0x8000); if(gbRamSize && gbRam) { utilGzWrite(gzFile, gbRam, gbRamSize); } if(gbCgbMode) { utilGzWrite(gzFile, gbVram, 0x4000); utilGzWrite(gzFile, gbWram, 0x8000); } gbSoundSaveGame(gzFile); gbCheatsSaveGame(gzFile); return true; } bool gbWriteMemSaveState(char *memory, int available) { gzFile gzFile = utilMemGzOpen(memory, available, "w"); if(gzFile == NULL) { return false; } bool res = gbWriteSaveState(gzFile); long pos = utilGzMemTell(gzFile)+8; if(pos >= (available)) res = false; utilGzClose(gzFile); return res; } bool gbWriteSaveState(const char *name) { gzFile gzFile = utilGzOpen(name,"wb"); if(gzFile == NULL) return false; bool res = gbWriteSaveState(gzFile); utilGzClose(gzFile); return res; } static bool gbReadSaveState(gzFile gzFile) { int version = utilReadInt(gzFile); if(version > GBSAVE_GAME_VERSION || version < 0) { systemMessage(MSG_UNSUPPORTED_VB_SGM, N_("Unsupported VisualBoy save game version %d"), version); return false; } u8 romname[20]; utilGzRead(gzFile, romname, 15); if(memcmp(&gbRom[0x134], romname, 15) != 0) { systemMessage(MSG_CANNOT_LOAD_SGM_FOR, N_("Cannot load save game for %s. Playing %s"), romname, &gbRom[0x134]); return false; } utilReadData(gzFile, gbSaveGameStruct); if(version >= GBSAVE_GAME_VERSION_7) { utilGzRead(gzFile, &IFF, 2); } if(gbSgbMode) { gbSgbReadGame(gzFile, version); } else { gbSgbMask = 0; // loading a game at the wrong time causes no display } utilGzRead(gzFile, &gbDataMBC1, sizeof(gbDataMBC1)); utilGzRead(gzFile, &gbDataMBC2, sizeof(gbDataMBC2)); if(version < GBSAVE_GAME_VERSION_4) // prior to version 4, there was no adjustment for the time the game // was last played, so we have less to read. This needs update if the // structure changes again. utilGzRead(gzFile, &gbDataMBC3, sizeof(gbDataMBC3)-sizeof(time_t)); else utilGzRead(gzFile, &gbDataMBC3, sizeof(gbDataMBC3)); utilGzRead(gzFile, &gbDataMBC5, sizeof(gbDataMBC5)); utilGzRead(gzFile, &gbDataHuC1, sizeof(gbDataHuC1)); utilGzRead(gzFile, &gbDataHuC3, sizeof(gbDataHuC3)); if(version < GBSAVE_GAME_VERSION_5) { utilGzRead(gzFile, pix, 256*224*sizeof(u16)); } memset(pix, 0, 257*226*sizeof(u32)); if(version < GBSAVE_GAME_VERSION_6) { utilGzRead(gzFile, gbPalette, 64 * sizeof(u16)); } else utilGzRead(gzFile, gbPalette, 128 * sizeof(u16)); // todo: remove utilGzRead(gzFile, gbPalette, 128 * sizeof(u16)); if(version < GBSAVE_GAME_VERSION_10) { if(!gbCgbMode && !gbSgbMode) { for(int i = 0; i < 8; i++) gbPalette[i] = systemGbPalette[gbPaletteOption*8+i]; } } utilGzRead(gzFile, &gbMemory[0x8000], 0x8000); if(gbRamSize && gbRam) { utilGzRead(gzFile, gbRam, gbRamSize); } gbMemoryMap[0x00] = &gbRom[0x0000]; gbMemoryMap[0x01] = &gbRom[0x1000]; gbMemoryMap[0x02] = &gbRom[0x2000]; gbMemoryMap[0x03] = &gbRom[0x3000]; gbMemoryMap[0x04] = &gbRom[0x4000]; gbMemoryMap[0x05] = &gbRom[0x5000]; gbMemoryMap[0x06] = &gbRom[0x6000]; gbMemoryMap[0x07] = &gbRom[0x7000]; gbMemoryMap[0x08] = &gbMemory[0x8000]; gbMemoryMap[0x09] = &gbMemory[0x9000]; gbMemoryMap[0x0a] = &gbMemory[0xa000]; gbMemoryMap[0x0b] = &gbMemory[0xb000]; gbMemoryMap[0x0c] = &gbMemory[0xc000]; gbMemoryMap[0x0d] = &gbMemory[0xd000]; gbMemoryMap[0x0e] = &gbMemory[0xe000]; gbMemoryMap[0x0f] = &gbMemory[0xf000]; int type = gbRom[0x147]; switch(type) { case 0x00: case 0x01: case 0x02: case 0x03: // MBC 1 memoryUpdateMapMBC1(); break; case 0x05: case 0x06: // MBC2 memoryUpdateMapMBC2(); break; case 0x0f: case 0x10: case 0x11: case 0x12: case 0x13: // MBC 3 memoryUpdateMapMBC3(); break; case 0x19: case 0x1a: case 0x1b: // MBC5 memoryUpdateMapMBC5(); break; case 0x1c: case 0x1d: case 0x1e: // MBC 5 Rumble memoryUpdateMapMBC5(); break; case 0x22: // MBC 7 memoryUpdateMapMBC7(); break; case 0xfe: // HuC3 memoryUpdateMapHuC3(); break; case 0xff: // HuC1 memoryUpdateMapHuC1(); break; } if(gbCgbMode) { utilGzRead(gzFile, gbVram, 0x4000); utilGzRead(gzFile, gbWram, 0x8000); int value = register_SVBK; if(value == 0) value = 1; gbMemoryMap[0x08] = &gbVram[register_VBK * 0x2000]; gbMemoryMap[0x09] = &gbVram[register_VBK * 0x2000 + 0x1000]; gbMemoryMap[0x0d] = &gbWram[value * 0x1000]; } gbSoundReadGame(version, gzFile); if(gbBorderOn) { gbSgbRenderBorder(); } systemDrawScreen(); if(version > GBSAVE_GAME_VERSION_1) gbCheatsReadGame(gzFile, version); systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED; return true; } bool gbReadMemSaveState(char *memory, int available) { gzFile gzFile = utilMemGzOpen(memory, available, "r"); bool res = gbReadSaveState(gzFile); utilGzClose(gzFile); return res; } bool gbReadSaveState(const char *name) { gzFile gzFile = utilGzOpen(name,"rb"); if(gzFile == NULL) { return false; } bool res = gbReadSaveState(gzFile); utilGzClose(gzFile); return res; } bool gbWritePNGFile(const char *fileName) { if(gbBorderOn) return utilWritePNGFile(fileName, 256, 224, pix); return utilWritePNGFile(fileName, 160, 144, pix); } bool gbWriteBMPFile(const char *fileName) { if(gbBorderOn) return utilWriteBMPFile(fileName, 256, 224, pix); return utilWriteBMPFile(fileName, 160, 144, pix); } void gbCleanUp() { if(gbRam != NULL) { free(gbRam); gbRam = NULL; } if(gbRom != NULL) { free(gbRom); gbRom = NULL; } if(gbMemory != NULL) { free(gbMemory); gbMemory = NULL; } if(gbLineBuffer != NULL) { free(gbLineBuffer); gbLineBuffer = NULL; } if(pix != NULL) { free(pix); pix = NULL; } gbSgbShutdown(); if(gbVram != NULL) { free(gbVram); gbVram = NULL; } if(gbWram != NULL) { free(gbWram); gbWram = NULL; } systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED; } bool gbLoadRom(const char *szFile) { int size = 0; if(gbRom != NULL) { gbCleanUp(); } systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED; gbRom = utilLoad(szFile, utilIsGBImage, NULL, size); if(!gbRom) return false; gbRomSize = size; return gbUpdateSizes(); } bool gbUpdateSizes() { if(gbRom[0x148] > 8) { systemMessage(MSG_UNSUPPORTED_ROM_SIZE, N_("Unsupported rom size %02x"), gbRom[0x148]); return false; } if(gbRomSize < gbRomSizes[gbRom[0x148]]) { gbRom = (u8 *)realloc(gbRom, gbRomSizes[gbRom[0x148]]); } gbRomSize = gbRomSizes[gbRom[0x148]]; gbRomSizeMask = gbRomSizesMasks[gbRom[0x148]]; if(gbRom[0x149] > 5) { systemMessage(MSG_UNSUPPORTED_RAM_SIZE, N_("Unsupported ram size %02x"), gbRom[0x149]); return false; } gbRamSize = gbRamSizes[gbRom[0x149]]; gbRamSizeMask = gbRamSizesMasks[gbRom[0x149]]; if(gbRamSize) { gbRam = (u8 *)malloc(gbRamSize); memset(gbRam, 0xFF, gbRamSize); } int type = gbRom[0x147]; mapperReadRAM = NULL; switch(type) { case 0x00: case 0x01: case 0x02: case 0x03: // MBC 1 mapper = mapperMBC1ROM; mapperRAM = mapperMBC1RAM; break; case 0x05: case 0x06: // MBC2 mapper = mapperMBC2ROM; mapperRAM = mapperMBC2RAM; gbRamSize = 0x200; gbRamSizeMask = 0x1ff; break; case 0x0f: case 0x10: case 0x11: case 0x12: case 0x13: // MBC 3 mapper = mapperMBC3ROM; mapperRAM = mapperMBC3RAM; mapperReadRAM = mapperMBC3ReadRAM; break; case 0x19: case 0x1a: case 0x1b: // MBC5 mapper = mapperMBC5ROM; mapperRAM = mapperMBC5RAM; break; case 0x1c: case 0x1d: case 0x1e: // MBC 5 Rumble mapper = mapperMBC5ROM; mapperRAM = mapperMBC5RAM; break; case 0x22: // MBC 7 mapper = mapperMBC7ROM; mapperRAM = mapperMBC7RAM; mapperReadRAM = mapperMBC7ReadRAM; break; case 0xfe: // HuC3 mapper = mapperHuC3ROM; mapperRAM = mapperHuC3RAM; mapperReadRAM = mapperHuC3ReadRAM; break; case 0xff: // HuC1 mapper = mapperHuC1ROM; mapperRAM = mapperHuC1RAM; break; default: systemMessage(MSG_UNKNOWN_CARTRIDGE_TYPE, N_("Unknown cartridge type %02x"), type); return false; } switch(type) { case 0x03: case 0x06: case 0x0f: case 0x10: case 0x13: case 0x1b: case 0x1d: case 0x1e: case 0x22: case 0xff: gbBattery = 1; break; } if(gbRom[0x146] == 0x03) { if(gbEmulatorType == 0 || gbEmulatorType == 2 || gbEmulatorType == 5) gbSgbMode = 1; else gbSgbMode = 0; } else gbSgbMode = 0; if(gbRom[0x143] & 0x80) { if(gbEmulatorType == 0 || gbEmulatorType == 1 || gbEmulatorType == 4 || gbEmulatorType == 5) { gbCgbMode = 1; gbVram = (u8 *)malloc(0x4000); gbWram = (u8 *)malloc(0x8000); memset(gbVram,0,0x4000); memset(gbWram,0,0x8000); memset(gbPalette,0, 2*128); } else { gbCgbMode = 0; } } else gbCgbMode = 0; gbInit(); gbReset(); switch(type) { case 0x1c: case 0x1d: case 0x1e: gbDataMBC5.isRumbleCartridge = 1; } return true; } void gbEmulate(int ticksToStop) { gbRegister tempRegister; u8 tempValue; s8 offset; int clockTicks = 0; gbDmaTicks = 0; register int opcode = 0; while(1) { #ifndef FINAL_VERSION if(systemDebug) { if(!(IFF & 0x80)) { if(systemDebug > 1) { sprintf(gbBuffer,"PC=%04x AF=%04x BC=%04x DE=%04x HL=%04x SP=%04x I=%04x\n", PC.W, AF.W, BC.W, DE.W,HL.W,SP.W,IFF); } else { sprintf(gbBuffer,"PC=%04x I=%02x\n", PC.W, IFF); } log(gbBuffer); } } #endif if(IFF & 0x80) { if(register_LCDC & 0x80) { clockTicks = gbLcdTicks; } else clockTicks = 100; if(gbLcdMode == 1 && (gbLcdLYIncrementTicks < clockTicks)) clockTicks = gbLcdLYIncrementTicks; if(gbSerialOn && (gbSerialTicks < clockTicks)) clockTicks = gbSerialTicks; if(gbTimerOn && (gbTimerTicks < clockTicks)) clockTicks = gbTimerTicks; if(soundTicks && (soundTicks < clockTicks)) clockTicks = soundTicks; } else { opcode = gbReadOpcode(PC.W++); if(IFF & 0x100) { IFF &= 0xff; PC.W--; } clockTicks = gbCycles[opcode]; switch(opcode) { case 0xCB: // extended opcode opcode = gbReadOpcode(PC.W++); clockTicks = gbCyclesCB[opcode]; switch(opcode) { #include "gbCodesCB.h" } break; #include "gbCodes.h" } } if(!emulating) return; if(gbDmaTicks) { clockTicks += gbDmaTicks; gbDmaTicks = 0; } if(gbSgbMode) { if(gbSgbPacketTimeout) { gbSgbPacketTimeout -= clockTicks; if(gbSgbPacketTimeout <= 0) gbSgbResetPacketState(); } } ticksToStop -= clockTicks; // DIV register emulation gbDivTicks -= clockTicks; while(gbDivTicks <= 0) { register_DIV++; gbDivTicks += GBDIV_CLOCK_TICKS; } if(register_LCDC & 0x80) { // LCD stuff gbLcdTicks -= clockTicks; if(gbLcdMode == 1) { // during V-BLANK,we need to increment LY at the same rate! gbLcdLYIncrementTicks -= clockTicks; while(gbLcdLYIncrementTicks <= 0) { gbLcdLYIncrementTicks += GBLY_INCREMENT_CLOCK_TICKS; if(register_LY < 153) { register_LY++; gbCompareLYToLYC(); if(register_LY >= 153) gbLcdLYIncrementTicks = 6; } else { register_LY = 0x00; // reset the window line gbWindowLine = -1; gbLcdLYIncrementTicks = GBLY_INCREMENT_CLOCK_TICKS * 2; gbCompareLYToLYC(); } } } // our counter is off, see what we need to do while(gbLcdTicks <= 0) { int framesToSkip = systemFrameSkip; if(speedup) framesToSkip = 9; // try 6 FPS during speedup switch(gbLcdMode) { case 0: // H-Blank register_LY++; gbCompareLYToLYC(); // check if we reached the V-Blank period if(register_LY == 144) { // Yes, V-Blank // set the LY increment counter gbLcdLYIncrementTicks = gbLcdTicks + GBLY_INCREMENT_CLOCK_TICKS; gbLcdTicks += GBLCD_MODE_1_CLOCK_TICKS; gbLcdMode = 1; if(register_LCDC & 0x80) { gbInterrupt |= 1; // V-Blank interrupt gbInterruptWait = 6; if(register_STAT & 0x10) gbInterrupt |= 2; } gbFrameCount++; systemFrame(); if((gbFrameCount % 10) == 0) system10Frames(60); if(gbFrameCount >= 60) { u32 currentTime = systemGetClock(); if(currentTime != gbLastTime) systemShowSpeed(100000/(currentTime - gbLastTime)); else systemShowSpeed(0); gbLastTime = currentTime; gbFrameCount = 0; } if(systemReadJoypads()) { // read joystick if(gbSgbMode && gbSgbMultiplayer) { if(gbSgbFourPlayers) { gbJoymask[0] = systemReadJoypad(0); gbJoymask[1] = systemReadJoypad(1); gbJoymask[2] = systemReadJoypad(2); gbJoymask[3] = systemReadJoypad(3); } else { gbJoymask[0] = systemReadJoypad(0); gbJoymask[1] = systemReadJoypad(1); } } else { gbJoymask[0] = systemReadJoypad(-1); } } int newmask = gbJoymask[0] & 255; if(gbRom[0x147] == 0x22) { systemUpdateMotionSensor(); } if(newmask) { gbInterrupt |= 16; } newmask = (gbJoymask[0] >> 10); speedup = (newmask & 1) ? true : false; gbCapture = (newmask & 2) ? true : false; if(gbCapture && !gbCapturePrevious) { gbCaptureNumber++; systemScreenCapture(gbCaptureNumber); } gbCapturePrevious = gbCapture; if(gbFrameSkipCount >= framesToSkip) { systemDrawScreen(); gbFrameSkipCount = 0; } else gbFrameSkipCount++; } else { // go the the OAM being accessed mode gbLcdTicks += GBLCD_MODE_2_CLOCK_TICKS; gbLcdMode = 2; // only one LCD interrupt per line. may need to generalize... if(!(register_STAT & 0x40) || (register_LY != register_LYC)) { if((register_STAT & 0x28) == 0x20) gbInterrupt |= 2; } } break; case 1: // V-Blank // next mode is OAM being accessed mode gbLcdTicks += GBLCD_MODE_2_CLOCK_TICKS; gbLcdMode = 2; if(!(register_STAT & 0x40) || (register_LY != register_LYC)) { if((register_STAT & 0x28) == 0x20) gbInterrupt |= 2; } break; case 2: // OAM being accessed mode // next mode is OAM and VRAM in use gbLcdTicks += GBLCD_MODE_3_CLOCK_TICKS; gbLcdMode = 3; break; case 3: // OAM and VRAM in use // next mode is H-Blank if(register_LY < 144) { if(!gbSgbMask) { if(gbFrameSkipCount >= framesToSkip) { gbRenderLine(); gbDrawSprites(); switch(systemColorDepth) { case 16: { u16 * dest = (u16 *)pix + (gbBorderLineSkip+2) * (register_LY + gbBorderRowSkip+1) + gbBorderColumnSkip; for(int x = 0; x < 160; ) { *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; *dest++ = systemColorMap16[gbLineMix[x++]]; } if(gbBorderOn) dest += gbBorderColumnSkip; *dest++ = 0; // for filters that read one pixel more } break; case 24: { u8 *dest = (u8 *)pix + 3*(gbBorderLineSkip * (register_LY + gbBorderRowSkip) + gbBorderColumnSkip); for(int x = 0; x < 160;) { *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; *((u32 *)dest) = systemColorMap32[gbLineMix[x++]]; dest+= 3; } } break; case 32: { u32 * dest = (u32 *)pix + (gbBorderLineSkip+1) * (register_LY + gbBorderRowSkip+1) + gbBorderColumnSkip; for(int x = 0; x < 160;) { *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; *dest++ = systemColorMap32[gbLineMix[x++]]; } } break; } } } } gbLcdTicks += GBLCD_MODE_0_CLOCK_TICKS; gbLcdMode = 0; // only one LCD interrupt per line. may need to generalize... if(!(register_STAT & 0x40) || (register_LY != register_LYC)) { if(register_STAT & 0x08) gbInterrupt |= 2; } if(gbHdmaOn) { gbDoHdma(); } break; } // mark the correct lcd mode on STAT register register_STAT = (register_STAT & 0xfc) | gbLcdMode; } } // serial emulation if(gbSerialOn) { #ifdef LINK_EMULATION if(linkConnected) { gbSerialTicks -= clockTicks; while(gbSerialTicks <= 0) { // increment number of shifted bits gbSerialBits++; linkProc(); if(gbSerialOn && (gbMemory[0xff02] & 1)) { if(gbSerialBits == 8) { gbSerialBits = 0; gbMemory[0xff01] = 0xff; gbMemory[0xff02] &= 0x7f; gbSerialOn = 0; gbInterrupt |= 8; gbSerialTicks = 0; } } gbSerialTicks += GBSERIAL_CLOCK_TICKS; } } else { #endif if(gbMemory[0xff02] & 1) { gbSerialTicks -= clockTicks; // overflow while(gbSerialTicks <= 0) { // shift serial byte to right and put a 1 bit in its place // gbMemory[0xff01] = 0x80 | (gbMemory[0xff01]>>1); // increment number of shifted bits gbSerialBits++; if(gbSerialBits == 8) { // end of transmission if(gbSerialFunction) // external device gbMemory[0xff01] = gbSerialFunction(gbMemory[0xff01]); else gbMemory[0xff01] = 0xff; gbSerialTicks = 0; gbMemory[0xff02] &= 0x7f; gbSerialOn = 0; gbInterrupt |= 8; gbSerialBits = 0; } else gbSerialTicks += GBSERIAL_CLOCK_TICKS; } } #ifdef LINK_EMULATION } #endif } // timer emulation if(gbTimerOn) { gbTimerTicks -= clockTicks; while(gbTimerTicks <= 0) { register_TIMA++; if(register_TIMA == 0) { // timer overflow! // reload timer modulo register_TIMA = register_TMA; // flag interrupt gbInterrupt |= 4; } gbTimerTicks += gbTimerClockTicks; } } /* if(soundOffFlag) { if(synchronize && !speedup) { synchronizeTicks -= clockTicks; while(synchronizeTicks < 0) { synchronizeTicks += SYNCHRONIZE_CLOCK_TICKS; DWORD now = timeGetTime(); gbElapsedTime += (now - timeNow); if(gbElapsedTime < 50) { DWORD diff = 50 - gbElapsedTime; Sleep(diff); timeNow = timeGetTime(); elapsedTime = timeNow - now - diff; if((int)elapsedTime < 0) elapsedTime = 0; } else { timeNow = timeGetTime(); elapsedTime = 0; } } } } */ soundTicks -= clockTicks; while(soundTicks < 0) { soundTicks += SOUND_CLOCK_TICKS; gbSoundTick(); } register_IF = gbInterrupt; if(IFF & 0x20) { IFF &= 0xdf; IFF |= 0x01; gbInterruptWait = 0; } else if(gbInterrupt) { if(gbInterruptWait == 0) { // gbInterruptWait = 0; if(IFF & 0x01) { if((gbInterrupt & 1) && (register_IE & 1)) { gbVblank_interrupt(); continue; } if((gbInterrupt & 2) && (register_IE & 2)) { gbLcd_interrupt(); continue; } if((gbInterrupt & 4) && (register_IE & 4)) { gbTimer_interrupt(); continue; } if((gbInterrupt & 8) && (register_IE & 8)) { gbSerial_interrupt(); continue; } if((gbInterrupt & 16) && (register_IE & 16)) { gbJoypad_interrupt(); continue; } } } else { gbInterruptWait -= clockTicks; if(gbInterruptWait < 0) gbInterruptWait = 0; } } if(ticksToStop <= 0) { if(!(register_LCDC & 0x80)) { if(systemReadJoypads()) { // read joystick if(gbSgbMode && gbSgbMultiplayer) { if(gbSgbFourPlayers) { gbJoymask[0] = systemReadJoypad(0); gbJoymask[1] = systemReadJoypad(1); gbJoymask[2] = systemReadJoypad(2); gbJoymask[3] = systemReadJoypad(3); } else { gbJoymask[0] = systemReadJoypad(0); gbJoymask[1] = systemReadJoypad(1); } } else { gbJoymask[0] = systemReadJoypad(-1); } } } return; } } } struct EmulatedSystem GBSystem = { // emuMain gbEmulate, // emuReset gbReset, // emuCleanUp gbCleanUp, // emuReadBattery gbReadBatteryFile, // emuWriteBattery gbWriteBatteryFile, // emuReadState gbReadSaveState, // emuWriteState gbWriteSaveState, // emuReadMemState gbReadMemSaveState, // emuWriteMemState gbWriteMemSaveState, // emuWritePNG gbWritePNGFile, // emuWriteBMP gbWriteBMPFile, // emuUpdateCPSR NULL, // emuHasDebugger false, // emuCount #ifdef FINAL_VERSION 70000/4, #else 1000, #endif };