X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fjaguar.cpp;h=f9a4185b6999f4eb2a8873719137dd7222e4e35b;hb=b4975cbd28c54b5a8f5d7a119375fe05b46f19a1;hp=bb940718ba9122a4fbbc2358f0cf8f4f6c4654a0;hpb=4906545f5d77d6d7a006fa0d765dc0ae522e477f;p=virtualjaguar diff --git a/src/jaguar.cpp b/src/jaguar.cpp index bb94071..f9a4185 100644 --- a/src/jaguar.cpp +++ b/src/jaguar.cpp @@ -16,6 +16,7 @@ #include "jaguar.h" +#include #include #include "SDL_opengl.h" #include "blitter.h" @@ -28,7 +29,7 @@ #include "jerry.h" #include "joystick.h" #include "log.h" -#include "m68k.h" +#include "m68000/m68kinterface.h" //#include "memory.h" #include "mmu.h" #include "settings.h" @@ -38,17 +39,18 @@ //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 @@ -60,24 +62,27 @@ extern int effect_start2, effect_start3, effect_start4, effect_start5, effect_st #endif // Really, need to include memory.h for this, but it might interfere with some stuff... -extern uint8 jagMemSpace[]; +extern uint8_t jagMemSpace[]; // Internal variables -uint32 jaguar_active_memory_dumps = 0; +uint32_t jaguar_active_memory_dumps = 0; -uint32 jaguarMainROMCRC32, jaguarROMSize, jaguarRunAddress; +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 a2Queue[0x400]; +uint32_t d0Queue[0x400]; +uint32_t pcQPtr = 0; +bool startM68KTracing = false; // // Callback function to detect illegal instructions @@ -88,7 +93,7 @@ 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]; @@ -121,9 +126,23 @@ 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... - pcQueue[pcQPtr++] = m68kPC; + pcQueue[pcQPtr] = m68kPC; + a2Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A2); + d0Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D0); + pcQPtr++; pcQPtr &= 0x3FF; if (m68kPC & 0x01) // Oops! We're fetching an odd address! @@ -133,12 +152,13 @@ if (inRoutine) static char buffer[2048]; for(int i=0; i<0x400; i++) { - m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], M68K_CPU_TYPE_68000); + WriteLog("[A2=%08X, D0=%08X]\n", a2Queue[(pcQPtr + i) & 0x3FF], d0Queue[(pcQPtr + i) & 0x3FF]); + 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))); @@ -174,17 +194,17 @@ if (inRoutine) 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) { @@ -270,16 +290,16 @@ 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) { @@ -356,7 +376,7 @@ CD_switch:: -> $306C #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) @@ -374,10 +394,23 @@ 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("%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(); @@ -484,17 +517,17 @@ ADDRESS_MAP_END #define NEW_TIMER_SYSTEM /* -uint8 jaguarMainRAM[0x400000]; // 68K CPU RAM -uint8 jaguarMainROM[0x600000]; // 68K CPU ROM -uint8 jaguarBootROM[0x040000]; // 68K CPU BIOS ROM--uses only half of this! -uint8 jaguarCDBootROM[0x040000]; // 68K CPU CD BIOS ROM +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 cdRAM[0x100]; -uint8 tomRAM[0x4000]; -uint8 jerryRAM[0x10000]; -static uint16 eeprom_ram[64]; +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) */ @@ -502,7 +535,7 @@ static uint16 eeprom_ram[64]; enum MemType { MM_NOP = 0, MM_RAM, MM_ROM, MM_IO }; // M68K Memory map/handlers -uint32 { +uint32_t { { 0x000000, 0x3FFFFF, MM_RAM, jaguarMainRAM }, { 0x800000, 0xDFFEFF, MM_ROM, jaguarMainROM }, // Note that this is really memory mapped I/O region... @@ -592,7 +625,7 @@ C3 = C2 = 1 means std. Jag. cntrlr. or nothing attached. */ }; -void WriteByte(uint32 address, uint8 byte, uint32 who/*=UNKNOWN*/) +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; @@ -628,7 +661,7 @@ void WriteByte(uint32 address, uint8 byte, uint32 who/*=UNKNOWN*/) { if (address == 0xF00050) { - tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | ((uint16)byte << 8); + tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | ((uint16_t)byte << 8); TOMResetPIT(); return; } @@ -640,7 +673,7 @@ void WriteByte(uint32 address, uint8 byte, uint32 who/*=UNKNOWN*/) } else if (address == 0xF00052) { - tomTimerDivider = (tomTimerDivider & 0x00FF) | ((uint16)byte << 8); + tomTimerDivider = (tomTimerDivider & 0x00FF) | ((uint16_t)byte << 8); TOMResetPIT(); return; } @@ -699,9 +732,9 @@ void WriteByte(uint32 address, uint8 byte, uint32 who/*=UNKNOWN*/) { // WriteLog("JERRY: Writing %02X to SCLK...\n", data); if ((address & 0x03) == 2) - JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32)byte << 8); + JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32_t)byte << 8); else - JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32)byte; + JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32_t)byte; JERRYI2SInterruptTimer = -1; #ifndef NEW_TIMER_SYSTEM @@ -797,23 +830,23 @@ WriteLog("JERRY: (68K int en/lat - Unhandled!) Tried to write $%02X to $%08X!\n" ; // Do nothing } -void WriteWord(uint32 adddress, uint16 word) +void WriteWord(uint32_t adddress, uint16_t word) { } -void WriteDWord(uint32 adddress, uint32 dword) +void WriteDWord(uint32_t adddress, uint32_t dword) { } -uint8 ReadByte(uint32 adddress) +uint8_t ReadByte(uint32_t adddress) { } -uint16 ReadWord(uint32 adddress) +uint16_t ReadWord(uint32_t adddress) { } -uint32 ReadDWord(uint32 adddress) +uint32_t ReadDWord(uint32_t adddress) { } #endif @@ -852,7 +885,7 @@ void ShowM68KContext(void) } // -// Musashi 68000 read/write/IRQ functions +// Custom UAE 68000 read/write/IRQ functions // #if 0 @@ -916,6 +949,13 @@ handler: #endif int irq_ack_handler(int level) { +#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! @@ -1166,7 +1206,7 @@ void m68k_write_memory_16(unsigned int address, unsigned int value) { if (startMemLog) { - uint8 hi = value >> 8, lo = value & 0xFF; + uint8_t hi = value >> 8, lo = value & 0xFF; if (hi > writeMemMax[address]) writeMemMax[address] = hi; @@ -1189,7 +1229,7 @@ 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) @@ -1279,14 +1319,14 @@ if (address == 0xF03214 && value == 0x88E30047) } -uint32 JaguarGetHandler(uint32 i) +uint32_t JaguarGetHandler(uint32_t i) { return JaguarReadLong(i * 4); } -bool JaguarInterruptHandlerIsValid(uint32 i) // Debug use only... +bool JaguarInterruptHandlerIsValid(uint32_t i) // Debug use only... { - uint32 handler = JaguarGetHandler(i); + uint32_t handler = JaguarGetHandler(i); return (handler && (handler != 0xFFFFFFFF) ? true : false); } @@ -1333,7 +1373,7 @@ void M68K_show_context(void) for(int i=0; i<256; i++) { WriteLog("handler %03i at ", i);//$%08X\n", i, (unsigned int)JaguarGetHandler(i)); - uint32 address = (uint32)JaguarGetHandler(i); + uint32_t address = (uint32_t)JaguarGetHandler(i); if (address == 0) WriteLog(".........\n"); @@ -1362,7 +1402,7 @@ 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)); @@ -1376,7 +1416,7 @@ void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32 who/*=UNKN #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)); @@ -1390,7 +1430,7 @@ void jaguar_unknown_writeword(unsigned address, unsigned data, uint32 who/*=UNKN #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)); @@ -1405,7 +1445,7 @@ unsigned jaguar_unknown_readbyte(unsigned address, uint32 who/*=UNKNOWN*/) 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)); @@ -1439,13 +1479,13 @@ unsigned int m68k_read_disassembler_32(unsigned int address) return m68k_read_memory_32(address); } -void JaguarDasm(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)) + + // 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); @@ -1485,14 +1526,16 @@ 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 <= 0x1FFFFE) + + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset < 0x800000) { 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 (jaguarMainROM[offset+0] << 8) | jaguarMainROM[offset+1]; @@ -1512,7 +1555,7 @@ 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]);//*/ @@ -1522,7 +1565,9 @@ void JaguarWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ offset &= 0xFFFFFF; - if (offset < 0x200000) + + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset < 0x800000) { jaguarMainRAM[offset & 0x1FFFFF] = data; return; @@ -1546,8 +1591,8 @@ void JaguarWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/) 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]);//*/ @@ -1566,7 +1611,8 @@ if (offset == 0x0102)//64*4) offset &= 0xFFFFFF; - if (offset <= 0x1FFFFE) + // First 2M is mirrored in the $0 - $7FFFFF range + if (offset <= 0x7FFFFE) { /* GPU Table (CD BIOS) @@ -1606,12 +1652,12 @@ 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")); }//*/ /* @@ -1621,7 +1667,7 @@ 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; @@ -1634,9 +1680,9 @@ 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... @@ -1681,13 +1727,13 @@ 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) @@ -1702,13 +1748,13 @@ void JaguarWriteLong(uint32 offset, uint32 data, uint32 who/*=UNKNOWN*/) JaguarWriteWord(offset+2, data & 0xFFFF, who); } -void JaguarSetScreenBuffer(uint32 * buffer) +void JaguarSetScreenBuffer(uint32_t * buffer) { // This is in TOM, but we set it here... screenBuffer = buffer; } -void JaguarSetScreenPitch(uint32 pitch) +void JaguarSetScreenPitch(uint32_t pitch) { // This is in TOM, but we set it here... screenPitch = pitch; @@ -1719,24 +1765,30 @@ void JaguarSetScreenPitch(uint32 pitch) // void JaguarInit(void) { + // For randomizing RAM + srand(time(NULL)); + + // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents + for(uint32_t i=0; i<0x200000; i+=4) + *((uint32_t *)(&jaguarMainRAM[i])) = rand(); + #ifdef CPU_DEBUG_MEMORY memset(readMem, 0x00, 0x400000); memset(writeMemMin, 0xFF, 0x400000); memset(writeMemMax, 0x00, 0x400000); #endif - memset(jaguarMainRAM, 0x00, 0x200000); +// 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(jaguarMainROM, 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); m68k_pulse_reset(); // Need to do this so UAE disasm doesn't segfault on exit GPUInit(); DSPInit(); @@ -1745,11 +1797,19 @@ memset(jaguarMainRAM + 0x804, 0xFF, 4); CDROMInit(); } + //New timer based code stuffola... void HalflineCallback(void); void RenderCallback(void); void JaguarReset(void) { + // Only problem with this approach: It wipes out RAM loaded files...! + // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents + for(uint32_t i=8; i<0x200000; i+=4) + *((uint32_t *)(&jaguarMainRAM[i])) = rand(); + + // 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 @@ -1770,19 +1830,18 @@ void JaguarReset(void) 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 - // New timer base code stuffola... - InitializeEventList(); // SetCallbackTime(ScanlineCallback, 63.5555); // SetCallbackTime(ScanlineCallback, 31.77775); SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); } + 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); @@ -1816,10 +1875,27 @@ void JaguarDone(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); @@ -1857,12 +1933,6 @@ void JaguarDone(void) M68K_show_context(); //#endif -#if 0 // This is drawn already... - WriteLog("Jaguar: 68K AutoVector table:\n", JaguarReadWord(0x3004)); - for(uint32 i=0x64; i<=0x7C; i+=4) - WriteLog(" #%u: %08X\n", (i-0x64)/4, JaguarReadLong(i)); -#endif - CDROMDone(); GPUDone(); DSPDone(); @@ -1900,8 +1970,8 @@ void JaguarDone(void) JaguarDasm(0x802000, 6000); WriteLog("\n");//*/ #endif -/* WriteLog("\n\nM68000 disassembly at $4000...\n"); - JaguarDasm(0x4000, 10000); +/* WriteLog("\n\nM68000 disassembly at $6004...\n"); + JaguarDasm(0x6004, 10000); WriteLog("\n");//*/ // WriteLog("\n\nM68000 disassembly at $802000...\n"); // JaguarDasm(0x802000, 0x1000); @@ -1911,89 +1981,6 @@ void JaguarDone(void) // JaguarDasm(0x800800, 0x1000); } -// -// Main Jaguar execution loop (1 frame) -// -void JaguarExecute(uint32 * backbuffer, bool render) -{ - uint16 vp = TOMReadWord(0xF0003E, JAGUAR) + 1; - uint16 vi = TOMReadWord(0xF0004E, JAGUAR); -//Using WO registers is OK, since we're the ones controlling access--there's nothing wrong here! ;-) -//Though we shouldn't be able to do it using TOMReadWord... !!! FIX !!! - -// uint16 vdb = TOMReadWord(0xF00046, JAGUAR); -//Note: This is the *definite* end of the display, though VDE *might* be less than this... -// uint16 vbb = TOMReadWord(0xF00040, JAGUAR); -//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, JAGUAR); - - uint16 refreshRate = (vjs.hardwareTypeNTSC ? 60 : 50); - uint32 m68kClockRate = (vjs.hardwareTypeNTSC ? M68K_CLOCK_RATE_NTSC : M68K_CLOCK_RATE_PAL); -//Not sure the above is correct, since the number of lines and timings given in the JTRM -//seem to indicate the refresh rate is *half* the above... -// uint16 refreshRate = (vjs.hardwareTypeNTSC ? 30 : 25); - // Should these be hardwired or read from VP? Yes, from VP! - // Err, actually, they should be hardwired, and hardwired to a set # of - // lines as well... - uint32 M68KCyclesPerScanline = m68kClockRate / (vp * refreshRate); - uint32 RISCCyclesPerScanline = m68kClockRate / (vp * refreshRate); - -/*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 && 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); - } - -//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); - JERRYI2SExec(RISCCyclesPerScanline); - BUTCHExec(RISCCyclesPerScanline); -//if (start_logging) -// WriteLog("About to execute GPU (%u)...\n", i); - if (vjs.GPUEnabled) - GPUExec(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); - TOMExecHalfline(i, render); - } -} // Temp debugging stuff @@ -2004,15 +1991,17 @@ void DumpMainMemory(void) if (fp == NULL) return; - fwrite(jaguarMainRAM, 1, 0x400000, fp); + fwrite(jaguarMainRAM, 1, 0x200000, fp); fclose(fp); } -uint8 * GetRamPtr(void) + +uint8_t * GetRamPtr(void) { return jaguarMainRAM; } + // // New Jaguar execution stack // This executes 1 frame's worth of code. @@ -2032,19 +2021,12 @@ void JaguarExecuteNew(void) if (vjs.GPUEnabled) GPUExec(USEC_TO_RISC_CYCLES(timeToNextEvent)); - if (vjs.DSPEnabled) - { - if (vjs.usePipelinedDSP) - DSPExecP2(USEC_TO_RISC_CYCLES(timeToNextEvent)); // Pipelined DSP execution (3 stage)... - else - DSPExec(USEC_TO_RISC_CYCLES(timeToNextEvent)); // Ordinary non-pipelined DSP - } - HandleNextEvent(); } while (!frameDone); } + #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 @@ -2065,23 +2047,23 @@ void JaguarExecuteNew(void) // 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 +// 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) { //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 vc = TOMReadWord(0xF00006, JAGUAR); - uint16 vp = TOMReadWord(0xF0003E, JAGUAR) + 1; - uint16 vi = TOMReadWord(0xF0004E, JAGUAR); -// uint16 vbb = TOMReadWord(0xF00040, JAGUAR); + 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 numHalfLines = ((vjs.hardwareTypeNTSC ? 525 : 625) * 2) / 2; + uint16_t numHalfLines = ((vjs.hardwareTypeNTSC ? 525 : 625) * 2) / 2; if ((vc & 0x7FF) >= numHalfLines) #else @@ -2129,6 +2111,7 @@ void HalflineCallback(void) #endif } + // 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