X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fjaguar.cpp;h=72802f518ce117b6895c2e9db4e2c0ff364083d3;hb=10d7ab1fb217c01030a0b637f9a571c1faf61ede;hp=d4ff90b90db1a037a81f77d852b1f81e39f209a8;hpb=4b32affecce8cf8f557feb96daa76ba1692c3afe;p=virtualjaguar diff --git a/src/jaguar.cpp b/src/jaguar.cpp index d4ff90b..72802f5 100644 --- a/src/jaguar.cpp +++ b/src/jaguar.cpp @@ -3,73 +3,136 @@ // // Originally by David Raingeard (Cal2) // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Carwin Jones (BeOS) -// Cleanups and endian wrongness amelioration by James L. Hammons +// Cleanups and endian wrongness amelioration by James Hammons // Note: Endian wrongness probably stems from the MAME origins of this emu and -// the braindead way in which MAME handles memory. :-) -// +// the braindead way in which MAME handled memory when this was written. :-) +// +// JLH = James Hammons +// +// WHO WHEN WHAT +// --- ---------- ----------------------------------------------------------- +// JLH 11/25/2009 Major rewrite of memory subsystem and handlers +// #include "jaguar.h" -#include "video.h" + +#include +#include "SDL_opengl.h" +#include "blitter.h" +#include "cdrom.h" +#include "dac.h" +#include "dsp.h" +#include "eeprom.h" +#include "event.h" +#include "gpu.h" +#include "jerry.h" +#include "joystick.h" +#include "log.h" +#include "m68000/m68kinterface.h" +//#include "memory.h" +#include "mmu.h" #include "settings.h" -//#include "m68kdasmAG.h" +#include "tom.h" #define CPU_DEBUG //Do this in makefile??? Yes! Could, but it's easier to define here... //#define LOG_UNMAPPED_MEMORY_ACCESSES //#define ABORT_ON_UNMAPPED_MEMORY_ACCESS -#define ABORT_ON_ILLEGAL_INSTRUCTIONS +//#define ABORT_ON_ILLEGAL_INSTRUCTIONS //#define ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION #define CPU_DEBUG_MEMORY +//#define LOG_CD_BIOS_CALLS +#define CPU_DEBUG_TRACING // Private function prototypes -unsigned jaguar_unknown_readbyte(unsigned address, uint32 who = UNKNOWN); -unsigned jaguar_unknown_readword(unsigned address, uint32 who = UNKNOWN); -void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32 who = UNKNOWN); -void jaguar_unknown_writeword(unsigned address, unsigned data, uint32 who = UNKNOWN); +unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who = UNKNOWN); +unsigned jaguar_unknown_readword(unsigned address, uint32_t who = UNKNOWN); +void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who = UNKNOWN); +void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who = UNKNOWN); void M68K_show_context(void); // External variables -//extern bool hardwareTypeNTSC; // Set to false for PAL #ifdef CPU_DEBUG_MEMORY extern bool startMemLog; // Set by "e" key extern int effect_start; extern int effect_start2, effect_start3, effect_start4, effect_start5, effect_start6; #endif -// Memory debugging identifiers - -char * whoName[9] = - { "Unknown", "Jaguar", "DSP", "GPU", "TOM", "JERRY", "M68K", "Blitter", "OP" }; +// Really, need to include memory.h for this, but it might interfere with some stuff... +extern uint8_t jagMemSpace[]; -uint32 jaguar_active_memory_dumps = 0; +// Internal variables -uint32 jaguar_mainRom_crc32, jaguarRomSize, jaguarRunAddress; +uint32_t jaguar_active_memory_dumps = 0; -/*static*/ uint8 * jaguar_mainRam = NULL; -/*static*/ uint8 * jaguar_mainRom = NULL; -/*static*/ uint8 * jaguar_bootRom = NULL; -/*static*/ uint8 * jaguar_CDBootROM = NULL; +uint32_t jaguarMainROMCRC32, jaguarROMSize, jaguarRunAddress; +bool jaguarCartInserted = false; +bool lowerField = false; #ifdef CPU_DEBUG_MEMORY -uint8 writeMemMax[0x400000], writeMemMin[0x400000]; -uint8 readMem[0x400000]; -uint32 returnAddr[4000], raPtr = 0xFFFFFFFF; +uint8_t writeMemMax[0x400000], writeMemMin[0x400000]; +uint8_t readMem[0x400000]; +uint32_t returnAddr[4000], raPtr = 0xFFFFFFFF; #endif -uint32 pcQueue[0x400]; -uint32 pcQPtr = 0; +uint32_t pcQueue[0x400]; +uint32_t pcQPtr = 0; +bool startM68KTracing = false; // // Callback function to detect illegal instructions // void GPUDumpDisassembly(void); void GPUDumpRegisters(void); - static bool start = false; +static bool start = false; + void M68KInstructionHook(void) { - uint32 m68kPC = m68k_get_reg(NULL, M68K_REG_PC); + uint32_t m68kPC = m68k_get_reg(NULL, M68K_REG_PC); +// Temp, for comparing... +{ +/* static char buffer[2048];//, mem[64]; + m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); + printf("%08X: %s\n", m68kPC, buffer);//*/ +} +//JaguarDasm(m68kPC, 1); +//Testing Hover Strike... +#if 0 +//Dasm(regs.pc, 1); +static int hitCount = 0; +static int inRoutine = 0; +static int instSeen; + +//if (regs.pc == 0x80340A) +if (m68kPC == 0x803416) +{ + hitCount++; + inRoutine = 1; + instSeen = 0; + printf("%i: $80340A start. A0=%08X, A1=%08X ", hitCount, m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1)); +} +else if (m68kPC == 0x803422) +{ + inRoutine = 0; + printf("(%i instructions)\n", instSeen); +} + +if (inRoutine) + instSeen++; +#endif + +// For code tracing... +#ifdef CPU_DEBUG_TRACING + if (startM68KTracing) + { + static char buffer[2048]; + + m68k_disassemble(buffer, m68kPC, 0); + WriteLog("%06X: %s\n", m68kPC, buffer); + } +#endif // For tracebacks... // Ideally, we'd save all the registers as well... @@ -83,21 +146,30 @@ void M68KInstructionHook(void) static char buffer[2048]; for(int i=0; i<0x400; i++) { - m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], M68K_CPU_TYPE_68000); + m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], 0);//M68K_CPU_TYPE_68000); WriteLog("\t%08X: %s\n", pcQueue[(pcQPtr + i) & 0x3FF], buffer); } WriteLog("\n"); - uint32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7); + uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); for(int i=0; i<10; i++) WriteLog("%06X: %08X\n", topOfStack - (i * 4), JaguarReadLong(topOfStack - (i * 4))); - WriteLog("Jaguar: VBL interrupt is %s\n", ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64))) ? "enabled" : "disabled"); + WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); M68K_show_context(); - log_done(); + LogDone(); exit(0); } + // Disassemble everything +/* { + static char buffer[2048]; + m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); + WriteLog("%08X: %s", m68kPC, buffer); + WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", + m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), + m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); + }//*/ /* if (m68kPC >= 0x807EC4 && m68kPC <= 0x807EDB) { static char buffer[2048]; @@ -115,17 +187,17 @@ void M68KInstructionHook(void) log_done(); exit(0); }//*/ -/* uint16 opcode = JaguarReadWord(m68kPC); +/* uint16_t opcode = JaguarReadWord(m68kPC); if (opcode == 0x4E75) // RTS { if (startMemLog) // WriteLog("Jaguar: Returning from subroutine to %08X\n", JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7))); { - uint32 addr = JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7)); + uint32_t addr = JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7)); bool found = false; if (raPtr != 0xFFFFFFFF) { - for(uint32 i=0; i<=raPtr; i++) + for(uint32_t i=0; i<=raPtr; i++) { if (returnAddr[i] == addr) { @@ -211,22 +283,24 @@ if (m68kPC == 0x802058) start = true; m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); }//*/ - if (m68kPC == 0x82E1A) +/* if (m68kPC == 0x82E1A) { static char buffer[2048]; - m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); + m68k_disassemble(buffer, m68kPC, 0);//M68K_CPU_TYPE_68000); WriteLog("--> [Routine start] %08X: %s", m68kPC, buffer); WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X(cmd), D1=%08X(# bytes), D2=%08X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); }//*/ - if (m68kPC == 0x82E58) +/* if (m68kPC == 0x82E58) WriteLog("--> [Routine end]\n"); if (m68kPC == 0x80004) { WriteLog("--> [Calling BusWrite2] D2: %08X\n", m68k_get_reg(NULL, M68K_REG_D2)); // m68k_set_reg(M68K_REG_D2, 0x12345678); }//*/ + +#ifdef LOG_CD_BIOS_CALLS /* CD_init:: -> $3000 BIOS_VER:: -> $3004 @@ -292,9 +366,10 @@ CD_switch:: -> $306C WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); -//*/ +#endif + #ifdef ABORT_ON_ILLEGAL_INSTRUCTIONS - if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC), M68K_CPU_TYPE_68000)) + if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC), 0))//M68K_CPU_TYPE_68000)) { #ifndef ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION if (m68k_read_memory_16(m68kPC) == 0x4AFC) @@ -312,11 +387,24 @@ CD_switch:: -> $306C #endif WriteLog("\nM68K encountered an illegal instruction at %08X!!!\n\nAborting!\n", m68kPC); - uint32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7); + uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); + uint32_t address = topOfStack - (4 * 4 * 3); + for(int i=0; i<10; i++) - WriteLog("%06X: %08X\n", topOfStack - (i * 4), JaguarReadLong(topOfStack - (i * 4))); - WriteLog("Jaguar: VBL interrupt is %s\n", ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64))) ? "enabled" : "disabled"); + { + WriteLog("%06X:", address); + + for(int j=0; j<4; j++) + { + WriteLog(" %08X", JaguarReadLong(address)); + address += 4; + } + + WriteLog("\n"); + } + + WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); M68K_show_context(); //temp @@ -325,35 +413,570 @@ CD_switch:: -> $306C // WriteLog("\n\n"); //endoftemp - log_done(); + LogDone(); exit(0); }//*/ #endif } +#if 0 +Now here be dragons... +Here is how memory ranges are defined in the CoJag driver. +Note that we only have to be concerned with 3 entities read/writing anything: +The main CPU, the GPU, and the DSP. Everything else is unnecessary. So we can keep our main memory +checking in jaguar.cpp, gpu.cpp and dsp.cpp. There should be NO checking in TOM, JERRY, etc. other than +things that are entirely internal to those modules. This way we should be able to get a handle on all +this crap which is currently scattered over Hell's Half Acre(tm). + +Also: We need to distinguish whether or not we need .b, .w, and .dw versions of everything, or if there +is a good way to collapse that shit (look below for inspiration). Current method works, but is error prone. + +/************************************* + * + * Main CPU memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( m68020_map, ADDRESS_SPACE_PROGRAM, 32 ) + AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_BASE(&jaguar_shared_ram) AM_SHARE(1) + AM_RANGE(0x800000, 0x9fffff) AM_ROM AM_REGION(REGION_USER1, 0) AM_BASE(&rom_base) + AM_RANGE(0xa00000, 0xa1ffff) AM_RAM + AM_RANGE(0xa20000, 0xa21fff) AM_READWRITE(eeprom_data_r, eeprom_data_w) AM_BASE(&generic_nvram32) AM_SIZE(&generic_nvram_size) + AM_RANGE(0xa30000, 0xa30003) AM_WRITE(watchdog_reset32_w) + AM_RANGE(0xa40000, 0xa40003) AM_WRITE(eeprom_enable_w) + AM_RANGE(0xb70000, 0xb70003) AM_READWRITE(misc_control_r, misc_control_w) + AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(2) + AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) + AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) + AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_BASE(&jaguar_gpu_clut) AM_SHARE(2) + AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) + AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) + AM_RANGE(0xf03000, 0xf03fff) AM_MIRROR(0x008000) AM_RAM AM_BASE(&jaguar_gpu_ram) AM_SHARE(3) + AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) + AM_RANGE(0xf16000, 0xf1600b) AM_READ(cojag_gun_input_r) // GPI02 + AM_RANGE(0xf17000, 0xf17003) AM_READ(status_r) // GPI03 +// AM_RANGE(0xf17800, 0xf17803) AM_WRITE(latch_w) // GPI04 + AM_RANGE(0xf17c00, 0xf17c03) AM_READ(jamma_r) // GPI05 + AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) + AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) + AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_BASE(&jaguar_dsp_ram) AM_SHARE(4) +ADDRESS_MAP_END + +/************************************* + * + * GPU memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( gpu_map, ADDRESS_SPACE_PROGRAM, 32 ) + AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) + AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) + AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) + AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) + AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) + AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_SHARE(2) + AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) + AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) + AM_RANGE(0xf03000, 0xf03fff) AM_RAM AM_SHARE(3) + AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) +ADDRESS_MAP_END + +/************************************* + * + * DSP memory handlers + * + *************************************/ + +static ADDRESS_MAP_START( dsp_map, ADDRESS_SPACE_PROGRAM, 32 ) + AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) + AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) + AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) + AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) + AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) + AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) + AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_SHARE(4) + AM_RANGE(0xf1d000, 0xf1dfff) AM_READ(jaguar_wave_rom_r) AM_BASE(&jaguar_wave_rom) +ADDRESS_MAP_END +*/ +#endif + +//#define EXPERIMENTAL_MEMORY_HANDLING +// Experimental memory mappage... +// Dunno if this is a good approach or not, but it seems to make better +// sense to have all this crap in one spot intstead of scattered all over +// the place the way it is now. +#ifdef EXPERIMENTAL_MEMORY_HANDLING +// Needed defines... +#define NEW_TIMER_SYSTEM + +/* +uint8_t jaguarMainRAM[0x400000]; // 68K CPU RAM +uint8_t jaguarMainROM[0x600000]; // 68K CPU ROM +uint8_t jaguarBootROM[0x040000]; // 68K CPU BIOS ROM--uses only half of this! +uint8_t jaguarCDBootROM[0x040000]; // 68K CPU CD BIOS ROM +bool BIOSLoaded = false; +bool CDBIOSLoaded = false; + +uint8_t cdRAM[0x100]; +uint8_t tomRAM[0x4000]; +uint8_t jerryRAM[0x10000]; +static uint16_t eeprom_ram[64]; + +// NOTE: CD BIOS ROM is read from cartridge space @ $802000 (it's a cartridge, after all) +*/ + +enum MemType { MM_NOP = 0, MM_RAM, MM_ROM, MM_IO }; + +// M68K Memory map/handlers +uint32_t { + { 0x000000, 0x3FFFFF, MM_RAM, jaguarMainRAM }, + { 0x800000, 0xDFFEFF, MM_ROM, jaguarMainROM }, +// Note that this is really memory mapped I/O region... +// { 0xDFFF00, 0xDFFFFF, MM_RAM, cdRAM }, + { 0xDFFF00, 0xDFFF03, MM_IO, cdBUTCH }, // base of Butch == interrupt control register, R/W + { 0xDFFF04, 0xDFFF07, MM_IO, cdDSCNTRL }, // DSA control register, R/W + { 0xDFFF0A, 0xDFFF0B, MM_IO, cdDS_DATA }, // DSA TX/RX data, R/W + { 0xDFFF10, 0xDFFF13, MM_IO, cdI2CNTRL }, // i2s bus control register, R/W + { 0xDFFF14, 0xDFFF17, MM_IO, cdSBCNTRL }, // CD subcode control register, R/W + { 0xDFFF18, 0xDFFF1B, MM_IO, cdSUBDATA }, // Subcode data register A + { 0xDFFF1C, 0xDFFF1F, MM_IO, cdSUBDATB }, // Subcode data register B + { 0xDFFF20, 0xDFFF23, MM_IO, cdSB_TIME }, // Subcode time and compare enable (D24) + { 0xDFFF24, 0xDFFF27, MM_IO, cdFIFO_DATA }, // i2s FIFO data + { 0xDFFF28, 0xDFFF2B, MM_IO, cdI2SDAT2 }, // i2s FIFO data (old) + { 0xDFFF2C, 0xDFFF2F, MM_IO, cdUNKNOWN }, // Seems to be some sort of I2S interface + + { 0xE00000, 0xE3FFFF, MM_ROM, jaguarBootROM }, + +// { 0xF00000, 0xF0FFFF, MM_IO, TOM_REGS_RW }, + { 0xF00050, 0xF00051, MM_IO, tomTimerPrescaler }, + { 0xF00052, 0xF00053, MM_IO, tomTimerDivider }, + { 0xF00400, 0xF005FF, MM_RAM, tomRAM }, // CLUT A&B: How to link these? Write to one writes to the other... + { 0xF00600, 0xF007FF, MM_RAM, tomRAM }, // Actually, this is a good approach--just make the reads the same as well + //What about LBUF writes??? + { 0xF02100, 0xF0211F, MM_IO, GPUWriteByte }, // GPU CONTROL + { 0xF02200, 0xF0229F, MM_IO, BlitterWriteByte }, // BLITTER + { 0xF03000, 0xF03FFF, MM_RAM, GPUWriteByte }, // GPU RAM + + { 0xF10000, 0xF1FFFF, MM_IO, JERRY_REGS_RW }, + +/* + EEPROM: + { 0xF14001, 0xF14001, MM_IO_RO, eepromFOO } + { 0xF14801, 0xF14801, MM_IO_WO, eepromBAR } + { 0xF15001, 0xF15001, MM_IO_RW, eepromBAZ } + + JOYSTICK: + { 0xF14000, 0xF14003, MM_IO, joystickFoo } + 0 = pad0/1 button values (4 bits each), RO(?) + 1 = pad0/1 index value (4 bits each), WO + 2 = unused, RO + 3 = NTSC/PAL, certain button states, RO + +JOYSTICK $F14000 Read/Write + 15.....8 7......0 +Read fedcba98 7654321q f-1 Signals J15 to J1 + q Cartridge EEPROM output data +Write exxxxxxm 76543210 e 1 = enable J7-J0 outputs + 0 = disable J7-J0 outputs + x don't care + m Audio mute + 0 = Audio muted (reset state) + 1 = Audio enabled + 7-4 J7-J4 outputs (port 2) + 3-0 J3-J0 outputs (port 1) +JOYBUTS $F14002 Read Only + 15.....8 7......0 +Read xxxxxxxx rrdv3210 x don't care + r Reserved + d Reserved + v 1 = NTSC Video hardware + 0 = PAL Video hardware + 3-2 Button inputs B3 & B2 (port 2) + 1-0 Button inputs B1 & B0 (port 1) + +J4 J5 J6 J7 Port 2 B2 B3 J12 J13 J14 J15 +J3 J2 J1 J0 Port 1 B0 B1 J8 J9 J10 J11 + 0 0 0 0 + 0 0 0 1 + 0 0 1 0 + 0 0 1 1 + 0 1 0 0 + 0 1 0 1 + 0 1 1 0 + 0 1 1 1 Row 3 C3 Option # 9 6 3 + 1 0 0 0 + 1 0 0 1 + 1 0 1 0 + 1 0 1 1 Row 2 C2 C 0 8 5 2 + 1 1 0 0 + 1 1 0 1 Row 1 C1 B * 7 4 1 + 1 1 1 0 Row 0 Pause A Up Down Left Right + 1 1 1 1 + +0 bit read in any position means that button is pressed. +C3 = C2 = 1 means std. Jag. cntrlr. or nothing attached. +*/ +}; + +void WriteByte(uint32_t address, uint8_t byte, uint32_t who/*=UNKNOWN*/) +{ + // Not sure, but I think the system only has 24 address bits... + address &= 0x00FFFFFF; + + // RAM ($000000 - $3FFFFF) 4M + if (address <= 0x3FFFFF) + jaguarMainRAM[address] = byte; + // hole ($400000 - $7FFFFF) 4M + else if (address <= 0x7FFFFF) + ; // Do nothing + // GAME ROM ($800000 - $DFFEFF) 6M - 256 bytes + else if (address <= 0xDFFEFF) + ; // Do nothing + // CDROM ($DFFF00 - $DFFFFF) 256 bytes + else if (address <= 0xDFFFFF) + { + cdRAM[address & 0xFF] = byte; +#ifdef CDROM_LOG + if ((address & 0xFF) < 12 * 4) + WriteLog("[%s] ", BReg[(address & 0xFF) / 4]); + WriteLog("CDROM: %s writing byte $%02X at $%08X [68K PC=$%08X]\n", whoName[who], data, offset, m68k_get_reg(NULL, M68K_REG_PC)); +#endif + } + // BIOS ROM ($E00000 - $E3FFFF) 256K + else if (address <= 0xE3FFFF) + ; // Do nothing + // hole ($E40000 - $EFFFFF) 768K + else if (address <= 0xEFFFFF) + ; // Do nothing + // TOM ($F00000 - $F0FFFF) 64K + else if (address <= 0xF0FFFF) +// ; // Do nothing + { + if (address == 0xF00050) + { + tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | ((uint16_t)byte << 8); + TOMResetPIT(); + return; + } + else if (address == 0xF00051) + { + tomTimerPrescaler = (tomTimerPrescaler & 0xFF00) | byte; + TOMResetPIT(); + return; + } + else if (address == 0xF00052) + { + tomTimerDivider = (tomTimerDivider & 0x00FF) | ((uint16_t)byte << 8); + TOMResetPIT(); + return; + } + else if (address == 0xF00053) + { + tomTimerDivider = (tomTimerDivider & 0xFF00) | byte; + TOMResetPIT(); + return; + } + else if (address >= 0xF00400 && address <= 0xF007FF) // CLUT (A & B) + { + // Writing to one CLUT writes to the other + address &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF) + tomRAM[address] = tomRAM[address + 0x200] = byte; + return; + } + //What about LBUF writes??? + else if ((address >= 0xF02100) && (address <= 0xF0211F)) // GPU CONTROL + { + GPUWriteByte(address, byte, who); + return; + } + else if ((address >= 0xF02200) && (address <= 0xF0229F)) // BLITTER + { + BlitterWriteByte(address, byte, who); + return; + } + else if ((address >= 0xF03000) && (address <= 0xF03FFF)) // GPU RAM + { + GPUWriteByte(address, byte, who); + return; + } + + tomRAM[address & 0x3FFF] = byte; + } + // JERRY ($F10000 - $F1FFFF) 64K + else if (address <= 0xF1FFFF) +// ; // Do nothing + { +#ifdef JERRY_DEBUG + WriteLog("jerry: writing byte %.2x at 0x%.6x\n", byte, address); +#endif + if ((address >= DSP_CONTROL_RAM_BASE) && (address < DSP_CONTROL_RAM_BASE+0x20)) + { + DSPWriteByte(address, byte, who); + return; + } + else if ((address >= DSP_WORK_RAM_BASE) && (address < DSP_WORK_RAM_BASE+0x2000)) + { + DSPWriteByte(address, byte, who); + return; + } + // SCLK ($F1A150--8 bits wide) +//NOTE: This should be taken care of in DAC... + else if ((address >= 0xF1A152) && (address <= 0xF1A153)) + { +// WriteLog("JERRY: Writing %02X to SCLK...\n", data); + if ((address & 0x03) == 2) + JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32_t)byte << 8); + else + JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32_t)byte; + + JERRYI2SInterruptTimer = -1; +#ifndef NEW_TIMER_SYSTEM + jerry_i2s_exec(0); +#else + RemoveCallback(JERRYI2SCallback); + JERRYI2SCallback(); +#endif +// return; + } + // LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...) + else if (address >= 0xF1A148 && address <= 0xF1A157) + { + DACWriteByte(address, byte, who); + return; + } + else if (address >= 0xF10000 && address <= 0xF10007) + { +#ifndef NEW_TIMER_SYSTEM + switch (address & 0x07) + { + case 0: + JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0x00FF) | (byte << 8); + JERRYResetPIT1(); + break; + case 1: + JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0xFF00) | byte; + JERRYResetPIT1(); + break; + case 2: + JERRYPIT1Divider = (JERRYPIT1Divider & 0x00FF) | (byte << 8); + JERRYResetPIT1(); + break; + case 3: + JERRYPIT1Divider = (JERRYPIT1Divider & 0xFF00) | byte; + JERRYResetPIT1(); + break; + case 4: + JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0x00FF) | (byte << 8); + JERRYResetPIT2(); + break; + case 5: + JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0xFF00) | byte; + JERRYResetPIT2(); + break; + case 6: + JERRYPIT2Divider = (JERRYPIT2Divider & 0x00FF) | (byte << 8); + JERRYResetPIT2(); + break; + case 7: + JERRYPIT2Divider = (JERRYPIT2Divider & 0xFF00) | byte; + JERRYResetPIT2(); + } +#else +WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", address); +#endif + return; + } +/* else if ((offset >= 0xF10010) && (offset <= 0xF10015)) + { + clock_byte_write(offset, byte); + return; + }//*/ + // JERRY -> 68K interrupt enables/latches (need to be handled!) + else if (address >= 0xF10020 && address <= 0xF10023) + { +WriteLog("JERRY: (68K int en/lat - Unhandled!) Tried to write $%02X to $%08X!\n", byte, address); + } +/* else if ((offset >= 0xF17C00) && (offset <= 0xF17C01)) + { + anajoy_byte_write(offset, byte); + return; + }*/ + else if ((address >= 0xF14000) && (address <= 0xF14003)) + { + JoystickWriteByte(address, byte); + EepromWriteByte(address, byte); + return; + } + else if ((address >= 0xF14004) && (address <= 0xF1A0FF)) + { + EepromWriteByte(address, byte); + return; + } +//Need to protect write attempts to Wavetable ROM (F1D000-FFF) + else if (address >= 0xF1D000 && address <= 0xF1DFFF) + return; + + jerryRAM[address & 0xFFFF] = byte; + } + // hole ($F20000 - $FFFFFF) 1M - 128K + else + ; // Do nothing +} + +void WriteWord(uint32_t adddress, uint16_t word) +{ +} + +void WriteDWord(uint32_t adddress, uint32_t dword) +{ +} + +uint8_t ReadByte(uint32_t adddress) +{ +} + +uint16_t ReadWord(uint32_t adddress) +{ +} + +uint32_t ReadDWord(uint32_t adddress) +{ +} +#endif + +void ShowM68KContext(void) +{ + printf("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); + + for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) + { + printf("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); + + if (i == M68K_REG_D3 || i == M68K_REG_D7) + printf("\n"); + } + + for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) + { + printf("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); + + if (i == M68K_REG_A3 || i == M68K_REG_A7) + printf("\n"); + } + + uint32_t currpc = m68k_get_reg(NULL, M68K_REG_PC); + uint32_t disPC = currpc - 30; + char buffer[128]; + + do + { + uint32_t oldpc = disPC; + disPC += m68k_disassemble(buffer, disPC, 0); + printf("%s%08X: %s\n", (oldpc == currpc ? ">" : " "), oldpc, buffer); + } + while (disPC < (currpc + 10)); +} + // -// Musashi 68000 read/write/IRQ functions +// Custom UAE 68000 read/write/IRQ functions // +#if 0 +IRQs: +=-=-= + + IPL Name Vector Control + ---------+---------------+---------------+--------------- + 2 VBLANK IRQ $100 INT1 bit #0 + 2 GPU IRQ $100 INT1 bit #1 + 2 HBLANK IRQ $100 INT1 bit #2 + 2 Timer IRQ $100 INT1 bit #3 + + Note: Both timer interrupts (JPIT && PIT) are on the same INT1 bit. + and are therefore indistinguishable. + + A typical way to install a LEVEL2 handler for the 68000 would be + something like this, you gotta supply "last_line" and "handler". + Note that the interrupt is auto vectored thru $100 (not $68) + + + V_AUTO = $100 + VI = $F004E + INT1 = $F00E0 + INT2 = $F00E2 + + IRQS_HANDLED=$909 ;; VBLANK and TIMER + + move.w #$2700,sr ;; no IRQs please + move.l #handler,V_AUTO ;; install our routine + + move.w #last_line,VI ;; scanline where IRQ should occur + ;; should be 'odd' BTW + move.w #IRQS_HANDLE&$FF,INT1 ;; enable VBLANK + TIMER + move.w #$2100,sr ;; enable IRQs on the 68K + ... + +handler: + move.w d0,-(a7) + move.w INT1,d0 + btst.b #0,d0 + bne.b .no_blank + + ... + +.no_blank: + btst.b #3,d0 + beq.b .no_timer + + ... + +.no_timer: + move.w #IRQS_HANDLED,INT1 ; clear latch, keep IRQ alive + move.w #0,INT2 ; let GPU run again + move.w (a7)+,d0 + rte + + As you can see, if you have multiple INT1 interrupts coming in, + you need to check the lower byte of INT1, to see which interrupt + happened. +#endif int irq_ack_handler(int level) { - int vector = M68K_INT_ACK_AUTOVECTOR; +#ifdef CPU_DEBUG_TRACING + if (startM68KTracing) + { + WriteLog("irq_ack_handler: M68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); + } +#endif + + // Tracing the IPL lines on the Jaguar schematic yields the following: + // IPL1 is connected to INTL on TOM (OUT to 68K) + // IPL0-2 are also tied to Vcc via 4.7K resistors! + // (DINT on TOM goes into DINT on JERRY (IN Tom from Jerry)) + // There doesn't seem to be any other path to IPL0 or 2 on the schematic, which means + // that *all* IRQs to the 68K are routed thru TOM at level 2. Which means they're all maskable. // The GPU/DSP/etc are probably *not* issuing an NMI, but it seems to work OK... + // They aren't, and this causes problems with a, err, specific ROM. :-D - if (level == 7) + if (level == 2) { - m68k_set_irq(0); // Clear the IRQ... - vector = 64; // Set user interrupt #0 + m68k_set_irq(0); // Clear the IRQ (NOTE: Without this, the BIOS fails)... + return 64; // Set user interrupt #0 } - return vector; + return M68K_INT_ACK_AUTOVECTOR; } +//#define USE_NEW_MMU + unsigned int m68k_read_memory_8(unsigned int address) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; #ifdef CPU_DEBUG_MEMORY - if ((address >= 0x000000) && (address <= 0x3FFFFF)) + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFF)) { if (startMemLog) readMem[address] = 1; @@ -364,15 +987,19 @@ unsigned int m68k_read_memory_8(unsigned int address) /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 || address == 0x1AF05E) WriteLog("[RM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, jaguar_mainRam[address]);//*/ +#ifndef USE_NEW_MMU unsigned int retVal = 0; - if ((address >= 0x000000) && (address <= 0x3FFFFF)) - retVal = jaguar_mainRam[address]; + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFF)) + retVal = jaguarMainRAM[address]; // else if ((address >= 0x800000) && (address <= 0xDFFFFF)) else if ((address >= 0x800000) && (address <= 0xDFFEFF)) - retVal = jaguar_mainRom[address - 0x800000]; + retVal = jaguarMainROM[address - 0x800000]; else if ((address >= 0xE00000) && (address <= 0xE3FFFF)) - retVal = jaguar_bootRom[address - 0xE00000]; +// retVal = jaguarBootROM[address - 0xE00000]; +// retVal = jaguarDevBootROM1[address - 0xE00000]; + retVal = jagMemSpace[address]; else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) retVal = CDROMReadByte(address); else if ((address >= 0xF00000) && (address <= 0xF0FFFF)) @@ -387,6 +1014,9 @@ unsigned int m68k_read_memory_8(unsigned int address) //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); return retVal; +#else + return MMURead8(address, M68K); +#endif } void gpu_dump_disassembly(void); @@ -394,6 +1024,8 @@ void gpu_dump_registers(void); unsigned int m68k_read_memory_16(unsigned int address) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; #ifdef CPU_DEBUG_MEMORY /* if ((address >= 0x000000) && (address <= 0x3FFFFE)) { @@ -454,16 +1086,20 @@ unsigned int m68k_read_memory_16(unsigned int address) /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 || address == 0x1AF05E) WriteLog("[RM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, GET16(jaguar_mainRam, address));//*/ +#ifndef USE_NEW_MMU unsigned int retVal = 0; - if ((address >= 0x000000) && (address <= 0x3FFFFE)) + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFE)) // retVal = (jaguar_mainRam[address] << 8) | jaguar_mainRam[address+1]; - retVal = GET16(jaguar_mainRam, address); + retVal = GET16(jaguarMainRAM, address); // else if ((address >= 0x800000) && (address <= 0xDFFFFE)) else if ((address >= 0x800000) && (address <= 0xDFFEFE)) - retVal = (jaguar_mainRom[address - 0x800000] << 8) | jaguar_mainRom[address - 0x800000 + 1]; + retVal = (jaguarMainROM[address - 0x800000] << 8) | jaguarMainROM[address - 0x800000 + 1]; else if ((address >= 0xE00000) && (address <= 0xE3FFFE)) - retVal = (jaguar_bootRom[address - 0xE00000] << 8) | jaguar_bootRom[address - 0xE00000 + 1]; +// retVal = (jaguarBootROM[address - 0xE00000] << 8) | jaguarBootROM[address - 0xE00000 + 1]; +// retVal = (jaguarDevBootROM1[address - 0xE00000] << 8) | jaguarDevBootROM1[address - 0xE00000 + 1]; + retVal = (jagMemSpace[address] << 8) | jagMemSpace[address + 1]; else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) retVal = CDROMReadWord(address, M68K); else if ((address >= 0xF00000) && (address <= 0xF0FFFE)) @@ -482,22 +1118,34 @@ unsigned int m68k_read_memory_16(unsigned int address) //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); return retVal; +#else + return MMURead16(address, M68K); +#endif } unsigned int m68k_read_memory_32(unsigned int address) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; //; So, it seems that it stores the returned DWORD at $51136 and $FB074. /* if (address == 0x51136 || address == 0xFB074 || address == 0x1AF05E) WriteLog("[RM32 PC=%08X] Addr: %08X, val: %08X\n", m68k_get_reg(NULL, M68K_REG_PC), address, (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2));//*/ //WriteLog("--> [RM32]\n"); +#ifndef USE_NEW_MMU return (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2); +#else + return MMURead32(address, M68K); +#endif } void m68k_write_memory_8(unsigned int address, unsigned int value) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; #ifdef CPU_DEBUG_MEMORY - if ((address >= 0x000000) && (address <= 0x3FFFFF)) + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFF)) { if (startMemLog) { @@ -508,15 +1156,26 @@ void m68k_write_memory_8(unsigned int address, unsigned int value) } } #endif +/*if (address == 0x4E00) + WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) // WriteLog("M68K: Writing %02X at %08X\n", value, address); //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); /*if (effect_start) if (address >= 0x18FA70 && address < (0x18FA70 + 8000)) WriteLog("M68K: Byte %02X written at %08X by 68K\n", value, address);//*/ - - if ((address >= 0x000000) && (address <= 0x3FFFFF)) - jaguar_mainRam[address] = value; +//$53D0 +/*if (address >= 0x53D0 && address <= 0x53FF) + printf("M68K: Writing byte $%02X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ +//Testing AvP on UAE core... +//000075A0: FFFFF80E B6320220 (BITMAP) +/*if (address == 0x75A0 && value == 0xFF) + printf("M68K: (8) Tripwire hit...\n");//*/ + +#ifndef USE_NEW_MMU + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFF)) + jaguarMainRAM[address] = value; else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) CDROMWriteByte(address, value, M68K); else if ((address >= 0xF00000) && (address <= 0xF0FFFF)) @@ -525,16 +1184,22 @@ void m68k_write_memory_8(unsigned int address, unsigned int value) JERRYWriteByte(address, value, M68K); else jaguar_unknown_writebyte(address, value, M68K); +#else + MMUWrite8(address, value, M68K); +#endif } void m68k_write_memory_16(unsigned int address, unsigned int value) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; #ifdef CPU_DEBUG_MEMORY - if ((address >= 0x000000) && (address <= 0x3FFFFE)) + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFE)) { if (startMemLog) { - uint8 hi = value >> 8, lo = value & 0xFF; + uint8_t hi = value >> 8, lo = value & 0xFF; if (hi > writeMemMax[address]) writeMemMax[address] = hi; @@ -548,6 +1213,8 @@ void m68k_write_memory_16(unsigned int address, unsigned int value) } } #endif +/*if (address == 0x4E00) + WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) // WriteLog("M68K: Writing %04X at %08X\n", value, address); //WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); @@ -555,7 +1222,7 @@ void m68k_write_memory_16(unsigned int address, unsigned int value) // WriteLog("M68K: Writing to blitter --> %04X at %08X\n", value, address); //if (address >= 0x0E75D0 && address <= 0x0E75E7) // WriteLog("M68K: Writing %04X at %08X, M68K PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC)); -/*extern uint32 totalFrames; +/*extern uint32_t totalFrames; if (address == 0xF02114) WriteLog("M68K: Writing to GPU_CTRL (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC)); if (address == 0xF02110) @@ -571,12 +1238,24 @@ if (address == 0xF02110) /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 || address == 0x1AF05E) WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ +//$53D0 +/*if (address >= 0x53D0 && address <= 0x53FF) + printf("M68K: Writing word $%04X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ +//Testing AvP on UAE core... +//000075A0: FFFFF80E B6320220 (BITMAP) +/*if (address == 0x75A0 && value == 0xFFFF) +{ + printf("\nM68K: (16) Tripwire hit...\n"); + ShowM68KContext(); +}//*/ - if ((address >= 0x000000) && (address <= 0x3FFFFE)) +#ifndef USE_NEW_MMU + // Note that the Jaguar only has 2M of RAM, not 4! + if ((address >= 0x000000) && (address <= 0x1FFFFE)) { /* jaguar_mainRam[address] = value >> 8; jaguar_mainRam[address + 1] = value & 0xFF;*/ - SET16(jaguar_mainRam, address, value); + SET16(jaguarMainRAM, address, value); } else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) CDROMWriteWord(address, value, M68K); @@ -593,10 +1272,17 @@ if (address == 0xF02110) m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); #endif } +#else + MMUWrite16(address, value, M68K); +#endif } void m68k_write_memory_32(unsigned int address, unsigned int value) { + // Musashi does this automagically for you, UAE core does not :-P + address &= 0x00FFFFFF; +/*if (address == 0x4E00) + WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ //WriteLog("--> [WM32]\n"); /*if (address == 0x0100)//64*4) WriteLog("M68K: Wrote dword to VI vector value %08X...\n", value);//*/ @@ -609,38 +1295,57 @@ if (address == 0xF03214 && value == 0x88E30047) doGPUDis = true;//*/ /* if (address == 0x51136 || address == 0xFB074) WriteLog("[WM32 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ +//Testing AvP on UAE core... +//000075A0: FFFFF80E B6320220 (BITMAP) +/*if (address == 0x75A0 && (value & 0xFFFF0000) == 0xFFFF0000) +{ + printf("\nM68K: (32) Tripwire hit...\n"); + ShowM68KContext(); +}//*/ +#ifndef USE_NEW_MMU m68k_write_memory_16(address, value >> 16); m68k_write_memory_16(address + 2, value & 0xFFFF); +#else + MMUWrite32(address, value, M68K); +#endif } -uint32 jaguar_get_handler(uint32 i) +uint32_t JaguarGetHandler(uint32_t i) { return JaguarReadLong(i * 4); } -uint32 jaguar_interrupt_handler_is_valid(uint32 i) +bool JaguarInterruptHandlerIsValid(uint32_t i) // Debug use only... { - uint32 handler = jaguar_get_handler(i); - if (handler && (handler != 0xFFFFFFFF)) - return 1; - else - return 0; + uint32_t handler = JaguarGetHandler(i); + return (handler && (handler != 0xFFFFFFFF) ? true : false); } void M68K_show_context(void) { - WriteLog("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); + WriteLog("68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); + for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) - WriteLog("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); - WriteLog("\n"); + { + WriteLog("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); + + if (i == M68K_REG_D3 || i == M68K_REG_D7) + WriteLog("\n"); + } + for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) - WriteLog("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); + { + WriteLog("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); + + if (i == M68K_REG_A3 || i == M68K_REG_A7) + WriteLog("\n"); + } WriteLog("68K disasm\n"); // jaguar_dasm(s68000readPC()-0x1000,0x20000); - jaguar_dasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200); + JaguarDasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200); // jaguar_dasm(0x5000, 0x14414); // WriteLog("\n.......[Cart start]...........\n\n"); @@ -648,18 +1353,26 @@ void M68K_show_context(void) WriteLog("..................\n"); - if (tom_irq_enabled(IRQ_VBLANK)) + if (TOMIRQEnabled(IRQ_VIDEO)) { - WriteLog("vblank int: enabled\n"); - jaguar_dasm(jaguar_get_handler(64), 0x200); + WriteLog("video int: enabled\n"); + JaguarDasm(JaguarGetHandler(64), 0x200); } else - WriteLog("vblank int: disabled\n"); + WriteLog("video int: disabled\n"); WriteLog("..................\n"); for(int i=0; i<256; i++) - WriteLog("handler %03i at $%08X\n", i, (unsigned int)jaguar_get_handler(i)); + { + WriteLog("handler %03i at ", i);//$%08X\n", i, (unsigned int)JaguarGetHandler(i)); + uint32_t address = (uint32_t)JaguarGetHandler(i); + + if (address == 0) + WriteLog(".........\n"); + else + WriteLog("$%08X\n", address); + } } // @@ -682,58 +1395,58 @@ void M68K_show_context(void) // in. This mistake causes it to try and overwrite approximately $700000 worth of address // space! (That is, unless the 68K causes a bus error...) -void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32 who/*=UNKNOWN*/) +void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) { #ifdef LOG_UNMAPPED_MEMORY_ACCESSES WriteLog("Jaguar: Unknown byte %02X written at %08X by %s (M68K PC=%06X)\n", data, address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); #endif #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS - extern bool finished; +// extern bool finished; finished = true; - extern bool doDSPDis; +// extern bool doDSPDis; if (who == DSP) doDSPDis = true; #endif } -void jaguar_unknown_writeword(unsigned address, unsigned data, uint32 who/*=UNKNOWN*/) +void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) { #ifdef LOG_UNMAPPED_MEMORY_ACCESSES WriteLog("Jaguar: Unknown word %04X written at %08X by %s (M68K PC=%06X)\n", data, address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); #endif #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS - extern bool finished; +// extern bool finished; finished = true; - extern bool doDSPDis; +// extern bool doDSPDis; if (who == DSP) doDSPDis = true; #endif } -unsigned jaguar_unknown_readbyte(unsigned address, uint32 who/*=UNKNOWN*/) +unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who/*=UNKNOWN*/) { #ifdef LOG_UNMAPPED_MEMORY_ACCESSES WriteLog("Jaguar: Unknown byte read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); #endif #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS - extern bool finished; +// extern bool finished; finished = true; - extern bool doDSPDis; +// extern bool doDSPDis; if (who == DSP) doDSPDis = true; #endif return 0xFF; } -unsigned jaguar_unknown_readword(unsigned address, uint32 who/*=UNKNOWN*/) +unsigned jaguar_unknown_readword(unsigned address, uint32_t who/*=UNKNOWN*/) { #ifdef LOG_UNMAPPED_MEMORY_ACCESSES WriteLog("Jaguar: Unknown word read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); #endif #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS - extern bool finished; +// extern bool finished; finished = true; - extern bool doDSPDis; +// extern bool doDSPDis; if (who == DSP) doDSPDis = true; #endif @@ -759,13 +1472,13 @@ unsigned int m68k_read_disassembler_32(unsigned int address) return m68k_read_memory_32(address); } -void jaguar_dasm(uint32 offset, uint32 qt) +void JaguarDasm(uint32_t offset, uint32_t qt) { #ifdef CPU_DEBUG static char buffer[2048];//, mem[64]; int pc = offset, oldpc; - for(uint32 i=0; i= 0x800000) && (offset < 0xC00000)) - data = jaguar_mainRom[offset - 0x800000]; + + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset < 0x800000) + data = jaguarMainRAM[offset & 0x1FFFFF]; + else if ((offset >= 0x800000) && (offset < 0xDFFF00)) + data = jaguarMainROM[offset - 0x800000]; else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) data = CDROMReadByte(offset, who); else if ((offset >= 0xE00000) && (offset < 0xE40000)) - data = jaguar_bootRom[offset & 0x3FFFF]; +// data = jaguarBootROM[offset & 0x3FFFF]; +// data = jaguarDevBootROM1[offset & 0x3FFFF]; + data = jagMemSpace[offset]; else if ((offset >= 0xF00000) && (offset < 0xF10000)) data = TOMReadByte(offset, who); else if ((offset >= 0xF10000) && (offset < 0xF20000)) @@ -803,23 +1519,27 @@ uint8 JaguarReadByte(uint32 offset, uint32 who/*=UNKNOWN*/) return data; } -uint16 JaguarReadWord(uint32 offset, uint32 who/*=UNKNOWN*/) +uint16_t JaguarReadWord(uint32_t offset, uint32_t who/*=UNKNOWN*/) { offset &= 0xFFFFFF; - if (offset <= 0x3FFFFE) + + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset < 0x800000) { - return (jaguar_mainRam[(offset+0) & 0x3FFFFF] << 8) | jaguar_mainRam[(offset+1) & 0x3FFFFF]; + return (jaguarMainRAM[(offset+0) & 0x1FFFFF] << 8) | jaguarMainRAM[(offset+1) & 0x1FFFFF]; } - else if ((offset >= 0x800000) && (offset <= 0xBFFFFE)) + else if ((offset >= 0x800000) && (offset < 0xDFFF00)) { offset -= 0x800000; - return (jaguar_mainRom[offset+0] << 8) | jaguar_mainRom[offset+1]; + return (jaguarMainROM[offset+0] << 8) | jaguarMainROM[offset+1]; } // else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00)) else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE)) return CDROMReadWord(offset, who); else if ((offset >= 0xE00000) && (offset <= 0xE3FFFE)) - return (jaguar_bootRom[(offset+0) & 0x3FFFF] << 8) | jaguar_bootRom[(offset+1) & 0x3FFFF]; +// return (jaguarBootROM[(offset+0) & 0x3FFFF] << 8) | jaguarBootROM[(offset+1) & 0x3FFFF]; +// return (jaguarDevBootROM1[(offset+0) & 0x3FFFF] << 8) | jaguarDevBootROM1[(offset+1) & 0x3FFFF]; + return (jagMemSpace[offset + 0] << 8) | jagMemSpace[offset + 1]; else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE)) return TOMReadWord(offset, who); else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE)) @@ -828,17 +1548,21 @@ uint16 JaguarReadWord(uint32 offset, uint32 who/*=UNKNOWN*/) return jaguar_unknown_readword(offset, who); } -void JaguarWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) +void JaguarWriteByte(uint32_t offset, uint8_t data, uint32_t who/*=UNKNOWN*/) { +/* if (offset >= 0x4E00 && offset < 0x4E04) + WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ //Need to check for writes in the range of $18FA70 + 8000... /*if (effect_start) if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000)) WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ offset &= 0xFFFFFF; - if (offset < 0x400000) + + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset < 0x800000) { - jaguar_mainRam[offset & 0x3FFFFF] = data; + jaguarMainRAM[offset & 0x1FFFFF] = data; return; } else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) @@ -856,13 +1580,15 @@ void JaguarWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) JERRYWriteByte(offset, data, who); return; } - + jaguar_unknown_writebyte(offset, data, who); } -uint32 starCount; -void JaguarWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/) +uint32_t starCount; +void JaguarWriteWord(uint32_t offset, uint16_t data, uint32_t who/*=UNKNOWN*/) { +/* if (offset >= 0x4E00 && offset < 0x4E04) + WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/ /*if (offset == 0x0100)//64*4) WriteLog("M68K: %s wrote word to VI vector value %04X...\n", whoName[who], data); if (offset == 0x0102)//64*4) @@ -878,7 +1604,8 @@ if (offset == 0x0102)//64*4) offset &= 0xFFFFFF; - if (offset <= 0x3FFFFE) + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset <= 0x7FFFFE) { /* GPU Table (CD BIOS) @@ -918,12 +1645,12 @@ if ((data & 0xFF00) != 0x7700) /*extern bool doGPUDis; if (offset == 0x120216 && who == GPU) doGPUDis = true;//*/ -/*extern uint32 gpu_pc; +/*extern uint32_t gpu_pc; if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) { - uint32 base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); - uint32 y = base / 0x300; - uint32 x = (base - (y * 0x300)) / 2; + uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); + uint32_t y = base / 0x300; + uint32_t x = (base - (y * 0x300)) / 2; WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); }//*/ /* @@ -933,7 +1660,7 @@ JWW: Writing starfield star 775E at 0011F650 (555984/1447) /*if (who == GPU && offset == (0x001E17F8 + 0x34)) data = 0xFE3C;//*/ // WriteLog("JWW: Write at %08X written to by %s.\n", 0x001E17F8 + 0x34, whoName[who]);//*/ -/*extern uint32 gpu_pc; +/*extern uint32_t gpu_pc; if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) { extern int objectPtr; @@ -946,9 +1673,9 @@ if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) // if (starCount == 1) // WriteLog("--> Drawing 1st star...\n"); // -// uint32 base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); -// uint32 y = base / 0x300; -// uint32 x = (base - (y * 0x300)) / 2; +// uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); +// uint32_t y = base / 0x300; +// uint32_t x = (base - (y * 0x300)) / 2; // WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); //A star of interest... @@ -966,8 +1693,8 @@ if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) if (offset == 0x11D31A + 0x48000 || offset == 0x11D31A) WriteLog("JWW: %s writing star %04X at %08X...\n", whoName[who], data, offset);//*/ - jaguar_mainRam[(offset+0) & 0x3FFFFF] = data >> 8; - jaguar_mainRam[(offset+1) & 0x3FFFFF] = data & 0xFF; + jaguarMainRAM[(offset+0) & 0x1FFFFF] = data >> 8; + jaguarMainRAM[(offset+1) & 0x1FFFFF] = data & 0xFF; return; } else if (offset >= 0xDFFF00 && offset <= 0xDFFFFE) @@ -993,13 +1720,13 @@ if (offset == 0x11D31A + 0x48000 || offset == 0x11D31A) } // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! -uint32 JaguarReadLong(uint32 offset, uint32 who/*=UNKNOWN*/) +uint32_t JaguarReadLong(uint32_t offset, uint32_t who/*=UNKNOWN*/) { return (JaguarReadWord(offset, who) << 16) | JaguarReadWord(offset+2, who); } // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! -void JaguarWriteLong(uint32 offset, uint32 data, uint32 who/*=UNKNOWN*/) +void JaguarWriteLong(uint32_t offset, uint32_t data, uint32_t who/*=UNKNOWN*/) { /* extern bool doDSPDis; if (offset < 0x400 && !doDSPDis) @@ -1014,60 +1741,87 @@ void JaguarWriteLong(uint32 offset, uint32 data, uint32 who/*=UNKNOWN*/) JaguarWriteWord(offset+2, data & 0xFFFF, who); } +void JaguarSetScreenBuffer(uint32_t * buffer) +{ + // This is in TOM, but we set it here... + screenBuffer = buffer; +} + +void JaguarSetScreenPitch(uint32_t pitch) +{ + // This is in TOM, but we set it here... + screenPitch = pitch; +} + // // Jaguar console initialization // -void jaguar_init(void) +void JaguarInit(void) { #ifdef CPU_DEBUG_MEMORY memset(readMem, 0x00, 0x400000); memset(writeMemMin, 0xFF, 0x400000); memset(writeMemMax, 0x00, 0x400000); #endif - memory_malloc_secure((void **)&jaguar_mainRam, 0x400000, "Jaguar 68K CPU RAM"); - memory_malloc_secure((void **)&jaguar_mainRom, 0x600000, "Jaguar 68K CPU ROM"); - memory_malloc_secure((void **)&jaguar_bootRom, 0x040000, "Jaguar 68K CPU BIOS ROM"); // Only uses half of this! - memory_malloc_secure((void **)&jaguar_CDBootROM, 0x040000, "Jaguar 68K CPU CD BIOS ROM"); - memset(jaguar_mainRam, 0x00, 0x400000); + memset(jaguarMainRAM, 0x00, 0x200000); // memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs... // memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s... //NOTE: This *doesn't* fix FlipOut... //Or does it? Hmm... //Seems to want $01010101... Dunno why. Investigate! - memset(jaguar_mainRom, 0x01, 0x600000); // & set it to all 01s... + memset(jaguarMainROM, 0x01, 0x600000); // & set it to all 01s... // memset(jaguar_mainRom, 0xFF, 0x600000); // & set it to all Fs... + lowerField = false; // Reset the lower field flag +//temp, for crappy crap that sux +memset(jaguarMainRAM + 0x804, 0xFF, 4); - m68k_set_cpu_type(M68K_CPU_TYPE_68000); - gpu_init(); +// m68k_set_cpu_type(M68K_CPU_TYPE_68000); + m68k_pulse_reset(); // Need to do this so UAE disasm doesn't segfault on exit + GPUInit(); DSPInit(); - tom_init(); - jerry_init(); + TOMInit(); + JERRYInit(); CDROMInit(); } -void jaguar_reset(void) +//New timer based code stuffola... +void HalflineCallback(void); +void RenderCallback(void); +void JaguarReset(void) { - if (vjs.useJaguarBIOS) - memcpy(jaguar_mainRam, jaguar_bootRom, 8); + // New timer base code stuffola... + InitializeEventList(); +//Need to change this so it uses the single RAM space and load the BIOS +//into it somewhere... +//Also, have to change this here and in JaguarReadXX() currently + // Only use the system BIOS if it's available...! (it's always available now!) + // AND only if a jaguar cartridge has been inserted. + if (vjs.useJaguarBIOS && jaguarCartInserted && !vjs.hardwareTypeAlpine) + memcpy(jaguarMainRAM, jagMemSpace + 0xE00000, 8); else - SET32(jaguar_mainRam, 4, jaguarRunAddress); + SET32(jaguarMainRAM, 4, jaguarRunAddress); // WriteLog("jaguar_reset():\n"); - tom_reset(); - jerry_reset(); - gpu_reset(); + TOMReset(); + JERRYReset(); + GPUReset(); DSPReset(); CDROMReset(); m68k_pulse_reset(); // Reset the 68000 WriteLog("Jaguar: 68K reset. PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7)); + + lowerField = false; // Reset the lower field flag +// SetCallbackTime(ScanlineCallback, 63.5555); +// SetCallbackTime(ScanlineCallback, 31.77775); + SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); } -void jaguar_done(void) +void JaguarDone(void) { #ifdef CPU_DEBUG_MEMORY /* WriteLog("\nJaguar: Memory Usage Stats (return addresses)\n\n"); - for(uint32 i=0; i<=raPtr; i++) + for(uint32_t i=0; i<=raPtr; i++) { WriteLog("\t%08X\n", returnAddr[i]); WriteLog("M68000 disassembly at $%08X...\n", returnAddr[i] - 16); @@ -1101,10 +1855,27 @@ void jaguar_done(void) //#ifdef CPU_DEBUG // for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) // WriteLog("\tA%i = 0x%.8x\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); - int32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7); - WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); + int32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); + WriteLog("M68K: Top of stack: %08X -> (%08X). Stack trace:\n", topOfStack, JaguarReadLong(topOfStack)); +#if 0 for(int i=-2; i<9; i++) WriteLog("%06X: %08X\n", topOfStack + (i * 4), JaguarReadLong(topOfStack + (i * 4))); +#else + uint32_t address = topOfStack - (4 * 4 * 3); + + for(int i=0; i<10; i++) + { + WriteLog("%06X:", address); + + for(int j=0; j<4; j++) + { + WriteLog(" %08X", JaguarReadLong(address)); + address += 4; + } + + WriteLog("\n"); + } +#endif /* WriteLog("\nM68000 disassembly at $802288...\n"); jaguar_dasm(0x802288, 3); @@ -1136,118 +1907,204 @@ void jaguar_done(void) WriteLog("\n");//*/ // WriteLog("Jaguar: CD BIOS version %04X\n", JaguarReadWord(0x3004)); - WriteLog("Jaguar: Interrupt enable = %02X\n", TOMReadByte(0xF000E1) & 0x1F); - WriteLog("Jaguar: VBL interrupt is %s\n", ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64))) ? "enabled" : "disabled"); + WriteLog("Jaguar: Interrupt enable = $%02X\n", TOMReadByte(0xF000E1, JAGUAR) & 0x1F); + WriteLog("Jaguar: Video interrupt is %s (line=%u)\n", ((TOMIRQEnabled(IRQ_VIDEO)) + && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled", TOMReadWord(0xF0004E, JAGUAR)); M68K_show_context(); //#endif +#if 0 // This is drawn already... + WriteLog("Jaguar: 68K AutoVector table:\n", JaguarReadWord(0x3004)); + for(uint32_t i=0x64; i<=0x7C; i+=4) + WriteLog(" #%u: %08X\n", (i-0x64)/4, JaguarReadLong(i)); +#endif + CDROMDone(); - gpu_done(); + GPUDone(); DSPDone(); - tom_done(); - jerry_done(); + TOMDone(); + JERRYDone(); + + // temp, until debugger is in place +//00802016: jsr $836F1A.l +//0080201C: jsr $836B30.l +//00802022: jsr $836B18.l +//00802028: jsr $8135F0.l +//00813C1E: jsr $813F76.l +//00802038: jsr $836D00.l +//00802098: jsr $8373A4.l +//008020A2: jsr $83E24A.l +//008020BA: jsr $83E156.l +//008020C6: jsr $83E19C.l +//008020E6: jsr $8445E8.l +//008020EC: jsr $838C20.l +//0080211A: jsr $838ED6.l +//00802124: jsr $89CA56.l +//0080212A: jsr $802B48.l +#if 0 + WriteLog("-------------------------------------------\n"); + JaguarDasm(0x8445E8, 0x200); + WriteLog("-------------------------------------------\n"); + JaguarDasm(0x838C20, 0x200); + WriteLog("-------------------------------------------\n"); + JaguarDasm(0x838ED6, 0x200); + WriteLog("-------------------------------------------\n"); + JaguarDasm(0x89CA56, 0x200); + WriteLog("-------------------------------------------\n"); + JaguarDasm(0x802B48, 0x200); + WriteLog("\n\nM68000 disassembly at $802000...\n"); + JaguarDasm(0x802000, 6000); + WriteLog("\n");//*/ +#endif +/* WriteLog("\n\nM68000 disassembly at $6004...\n"); + JaguarDasm(0x6004, 10000); + WriteLog("\n");//*/ +// WriteLog("\n\nM68000 disassembly at $802000...\n"); +// JaguarDasm(0x802000, 0x1000); +// WriteLog("\n\nM68000 disassembly at $4100...\n"); +// JaguarDasm(0x4100, 200); +// WriteLog("\n\nM68000 disassembly at $800800...\n"); +// JaguarDasm(0x800800, 0x1000); +} + + +// Temp debugging stuff + +void DumpMainMemory(void) +{ + FILE * fp = fopen("./memdump.bin", "wb"); - memory_free(jaguar_mainRom); - memory_free(jaguar_mainRam); - memory_free(jaguar_bootRom); - memory_free(jaguar_CDBootROM); + if (fp == NULL) + return; + + fwrite(jaguarMainRAM, 1, 0x400000, fp); + fclose(fp); +} + + +uint8_t * GetRamPtr(void) +{ + return jaguarMainRAM; } + // -// Main Jaguar execution loop (1 frame) +// New Jaguar execution stack +// This executes 1 frame's worth of code. // -void JaguarExecute(uint32 * backbuffer, bool render) +bool frameDone; +void JaguarExecuteNew(void) { - uint16 vp = TOMReadWord(0xF0003E) + 1;//Hmm. This is a WO register. Will work? Looks like. But wrong behavior! - uint16 vi = TOMReadWord(0xF0004E);//Another WO register... -//Using WO registers is OK, since we're the ones controlling access--there's nothing wrong here! ;-) - -// uint16 vdb = TOMReadWord(0xF00046); -//Note: This is the *definite* end of the display, though VDE *might* be less than this... -// uint16 vbb = TOMReadWord(0xF00040); -//It seems that they mean it when they say that VDE is the end of object processing. -//However, we need to be able to tell the OP (or TOM) that we've reached the end of the -//buffer and not to write any more pixels... !!! FIX !!! -// uint16 vde = TOMReadWord(0xF00048); - - uint16 refreshRate = (vjs.hardwareTypeNTSC ? 60 : 50); - // Should these be hardwired or read from VP? Yes, from VP! - uint32 M68KCyclesPerScanline - = (vjs.hardwareTypeNTSC ? M68K_CLOCK_RATE_NTSC : M68K_CLOCK_RATE_PAL) / (vp * refreshRate); - uint32 RISCCyclesPerScanline - = (vjs.hardwareTypeNTSC ? RISC_CLOCK_RATE_NTSC : RISC_CLOCK_RATE_PAL) / (vp * refreshRate); - - TOMResetBackbuffer(backbuffer); -/*extern int effect_start; -if (effect_start) - WriteLog("JagExe: VP=%u, VI=%u, CPU CPS=%u, GPU CPS=%u\n", vp, vi, M68KCyclesPerScanline, RISCCyclesPerScanline);//*/ - -//extern int start_logging; - for(uint16 i=0; i 0 && tom_irq_enabled(IRQ_VBLANK)) // Time for Vertical Interrupt? - { - // We don't have to worry about autovectors & whatnot because the Jaguar - // tells you through its HW registers who sent the interrupt... - tom_set_pending_video_int(); - m68k_set_irq(7); - } + if (vjs.GPUEnabled) + GPUExec(USEC_TO_RISC_CYCLES(timeToNextEvent)); -//if (start_logging) -// WriteLog("About to execute M68K (%u)...\n", i); - m68k_execute(M68KCyclesPerScanline); -//if (start_logging) -// WriteLog("About to execute TOM's PIT (%u)...\n", i); - TOMExecPIT(RISCCyclesPerScanline); -//if (start_logging) -// WriteLog("About to execute JERRY's PIT (%u)...\n", i); - JERRYExecPIT(RISCCyclesPerScanline); -//if (start_logging) -// WriteLog("About to execute JERRY's SSI (%u)...\n", i); - jerry_i2s_exec(RISCCyclesPerScanline); - BUTCHExec(RISCCyclesPerScanline); -//if (start_logging) -// WriteLog("About to execute GPU (%u)...\n", i); - gpu_exec(RISCCyclesPerScanline); - - if (vjs.DSPEnabled) - { - if (vjs.usePipelinedDSP) - DSPExecP2(RISCCyclesPerScanline); // Pipelined DSP execution (3 stage)... - else - DSPExec(RISCCyclesPerScanline); // Ordinary non-pipelined DSP -// DSPExecComp(RISCCyclesPerScanline); // Comparison core - } - -//if (start_logging) -// WriteLog("About to execute OP (%u)...\n", i); - TOMExecScanline(i, render); - } + HandleNextEvent(); + } + while (!frameDone); } -// Temp debugging stuff -void DumpMainMemory(void) +#define USE_CORRECT_PAL_TIMINGS +// A lot of confusion comes from here... +// The thing to keep in mind is that the VC is advanced every HALF line, regardless +// of whether the display is interlaced or not. The only difference with an +// interlaced display is that the high bit of VC will be set when the lower +// field is being rendered. (NB: The high bit of VC is ALWAYS set on the lower field, +// regardless of whether it's in interlace mode or not. +// NB2: Seems it doens't always, not sure what the constraint is...) +// +// Normally, TVs will render a full frame in 1/30s (NTSC) or 1/25s (PAL) by +// rendering two fields that are slighty vertically offset from each other. +// Each field is created in 1/60s (NTSC) or 1/50s (PAL), and every other line +// is rendered in this mode so that each field, when overlaid on each other, +// will yield the final picture at the full resolution for the full frame. +// +// We execute a half frame in each timeslice (1/60s NTSC, 1/50s PAL). +// Since the number of lines in a FULL frame is 525 for NTSC, 625 for PAL, +// it will be half this number for a half frame. BUT, since we're counting +// HALF lines, we double this number and we're back at 525 for NTSC, 625 for PAL. +// +// Scanline times are 63.5555... μs in NTSC and 64 μs in PAL +// Half line times are, naturally, half of this. :-P +void HalflineCallback(void) { - FILE * fp = fopen("./memdump.bin", "wb"); +//OK, this is hardwired to run in NTSC, and for who knows how long. +//Need to fix this so that it does a half-line in the correct amount of time +//and number of lines, depending on which mode we're in. [FIXED] + uint16_t vc = TOMReadWord(0xF00006, JAGUAR); + uint16_t vp = TOMReadWord(0xF0003E, JAGUAR) + 1; + uint16_t vi = TOMReadWord(0xF0004E, JAGUAR); +// uint16_t vbb = TOMReadWord(0xF00040, JAGUAR); + vc++; + +#ifdef USE_CORRECT_PAL_TIMINGS + // Each # of lines is for a full frame == 1/30s (NTSC), 1/25s (PAL). + // So we cut the number of half-lines in a frame in half. :-P + uint16_t numHalfLines = ((vjs.hardwareTypeNTSC ? 525 : 625) * 2) / 2; + + if ((vc & 0x7FF) >= numHalfLines) +#else + if ((vc & 0x7FF) >= vp) +#endif + { + vc = 0; +// lowerField = !lowerField; - if (fp == NULL) - return; + // If we're rendering the lower field, set the high bit (#12, counting + // from 1) of VC + if (lowerField) + vc = 0x0800; + } - fwrite(jaguar_mainRam, 1, 0x400000, fp); - fclose(fp); +//WriteLog("SLC: Currently on line %u (VP=%u)...\n", vc, vp); + TOMWriteWord(0xF00006, vc, JAGUAR); + +//This is a crappy kludge, but maybe it'll work for now... +//Maybe it's not so bad, since the IRQ happens on a scanline boundary... + if ((vc & 0x7FF) == vi && (vc & 0x7FF) > 0 && TOMIRQEnabled(IRQ_VIDEO)) // Time for Vertical Interrupt? + { + // We don't have to worry about autovectors & whatnot because the Jaguar + // tells you through its HW registers who sent the interrupt... + TOMSetPendingVideoInt(); + m68k_set_irq(2); + } + + TOMExecHalfline(vc, true); + +//Change this to VBB??? +//Doesn't seem to matter (at least for Flip Out & I-War) + if ((vc & 0x7FF) == 0) +// if (vc == vbb) + { + JoystickExec(); + frameDone = true; + }//*/ + +#ifdef USE_CORRECT_PAL_TIMINGS + SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); +#else +// SetCallbackTime(HalflineCallback, 63.5555); + SetCallbackTime(HalflineCallback, 31.77775); +#endif } -uint8 * GetRamPtr(void) + +// This isn't currently used, but maybe it should be... +/* +Nah, the scanline based code is good enough, and runs in 1 frame. The GUI +handles all the rest, so this isn't needed. :-P +*/ +void RenderCallback(void) { - return jaguar_mainRam; +// SetCallbackTime(RenderCallback, 33303.082); // # Scanlines * scanline time + SetCallbackTime(RenderCallback, 16651.541); // # Scanlines * scanline time }