//
// JAGUAR.CPP
//
-// by cal2
-// GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
+// 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
// Note: Endian wrongness probably stems from the MAME origins of this emu and
// the braindead way in which MAME handles memory. :-)
//
#include "jaguar.h"
+#include "video.h"
+#include "settings.h"
//#include "m68kdasmAG.h"
-//#define LOG_UNMAPPED_MEMORY_ACCESSES
-//#define SOUND_OUTPUT
#define CPU_DEBUG
-#define JAGUAR_WIP_RELEASE
//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 CPU_DEBUG_MEMORY
// Private function prototypes
-unsigned jaguar_unknown_readbyte(unsigned address);
-unsigned jaguar_unknown_readword(unsigned address);
-void jaguar_unknown_writebyte(unsigned address, unsigned data);
-void jaguar_unknown_writeword(unsigned address, unsigned data);
+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);
void M68K_show_context(void);
// External variables
-extern bool hardwareTypeNTSC; // Set to false for PAL
+//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
-// These values are overridden by command line switches...
+// Memory debugging identifiers
-bool dsp_enabled = false;
-bool jaguar_use_bios = true; // Default is now to USE the BIOS
-uint32 jaguar_active_memory_dumps = 0;
+char * whoName[9] =
+ { "Unknown", "Jaguar", "DSP", "GPU", "TOM", "JERRY", "M68K", "Blitter", "OP" };
-uint32 jaguar_mainRom_crc32;
+uint32 jaguar_active_memory_dumps = 0;
-static uint32 m68k_cycles_per_scanline;
-static uint32 gpu_cycles_per_scanline;
-static uint32 dsp_cycles_per_scanline;
-static uint32 jaguar_screen_scanlines;
+uint32 jaguar_mainRom_crc32, jaguarRomSize, jaguarRunAddress;
/*static*/ uint8 * jaguar_mainRam = NULL;
/*static*/ uint8 * jaguar_bootRom = NULL;
/*static*/ uint8 * jaguar_mainRom = NULL;
+#ifdef CPU_DEBUG_MEMORY
+uint8 writeMemMax[0x400000], writeMemMin[0x400000];
+uint8 readMem[0x400000];
+uint32 returnAddr[4000], raPtr = 0xFFFFFFFF;
+#endif
+
+uint32 pcQueue[0x400];
+uint32 pcQPtr = 0;
//
// Callback function to detect illegal instructions
//
+//void GPUDumpDisassembly(void);
+//void GPUDumpRegisters(void);
void M68KInstructionHook(void)
{
uint32 m68kPC = m68k_get_reg(NULL, M68K_REG_PC);
+// For tracebacks...
+// Ideally, we'd save all the registers as well...
+ pcQueue[pcQPtr++] = m68kPC;
+ pcQPtr &= 0x3FF;
+
+ if (m68kPC & 0x01) // Oops! We're fetching an odd address!
+ {
+ WriteLog("M68K: Attempted to execute from an odd adress!\n\nBacktrace:\n\n");
+
+ static char buffer[2048];
+ for(int i=0; i<0x400; i++)
+ {
+ m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], 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);
+ 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");
+ M68K_show_context();
+ log_done();
+ exit(0);
+ }
+
+/* if (m68kPC >= 0x807EC4 && m68kPC <= 0x807EDB)
+ {
+ 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 == 0x8D0E48 && effect_start5)
+ {
+ WriteLog("\nM68K: At collision detection code. Exiting!\n\n");
+ GPUDumpRegisters();
+ GPUDumpDisassembly();
+ log_done();
+ exit(0);
+ }//*/
+/* uint16 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));
+ bool found = false;
+ if (raPtr != 0xFFFFFFFF)
+ {
+ for(uint32 i=0; i<=raPtr; i++)
+ {
+ if (returnAddr[i] == addr)
+ {
+ found = true;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ returnAddr[++raPtr] = addr;
+ }
+ }//*/
+
/* static char buffer[2048];
m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
WriteLog("%08X: %s \t\tD0=%08X, A0=%08X\n", m68kPC, buffer, m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_A0));//*/
/* if (m68kPC == 0x803F16)
{
WriteLog("M68K: Registers found at $803F16:\n");
- WriteLog( "\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC));
+ WriteLog("\t68K 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("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i));
+ 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("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
}*/
- if (!m68k_is_valid_instruction(jaguar_word_read(m68kPC), M68K_CPU_TYPE_68000))
+ if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC), M68K_CPU_TYPE_68000))
{
- WriteLog("\nEncountered illegal instruction at %08X!!!\n\nAborting!\n", m68kPC);
+ WriteLog("\nM68K encountered an illegal instruction at %08X!!!\n\nAborting!\n", m68kPC);
uint32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7);
- WriteLog("M68K: Top of stack: %08X. Stack trace:\n", jaguar_long_read(topOfStack));
+ 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), jaguar_long_read(topOfStack - (i * 4)));
+ 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");
M68K_show_context();
log_done();
exit(0);
- }
+ }//*/
}
//
unsigned int m68k_read_memory_8(unsigned int address)
{
-//WriteLog( "[RM8] Addr: %08X\n", address);
+#ifdef CPU_DEBUG_MEMORY
+ if ((address >= 0x000000) && (address <= 0x3FFFFF))
+ {
+ if (startMemLog)
+ readMem[address] = 1;
+ }
+#endif
+//WriteLog("[RM8] Addr: %08X\n", address);
unsigned int retVal = 0;
if ((address >= 0x000000) && (address <= 0x3FFFFF))
else if ((address >= 0xE00000) && (address <= 0xE3FFFF))
retVal = jaguar_bootRom[address - 0xE00000];
else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF))
- retVal = cdrom_byte_read(address);
+ retVal = CDROMReadByte(address);
else if ((address >= 0xF00000) && (address <= 0xF0FFFF))
- retVal = tom_byte_read(address);
+ retVal = TOMReadByte(address, M68K);
else if ((address >= 0xF10000) && (address <= 0xF1FFFF))
- retVal = jerry_byte_read(address);
+ retVal = JERRYReadByte(address, M68K);
else
- retVal = jaguar_unknown_readbyte(address);
+ retVal = jaguar_unknown_readbyte(address, M68K);
return retVal;
}
unsigned int m68k_read_memory_16(unsigned int address)
{
-//WriteLog( "[RM16] Addr: %08X\n", address);
+#ifdef CPU_DEBUG_MEMORY
+/* if ((address >= 0x000000) && (address <= 0x3FFFFE))
+ {
+ if (startMemLog)
+ readMem[address] = 1, readMem[address + 1] = 1;
+ }//*/
+/* if (effect_start && (address >= 0x8064FC && address <= 0x806501))
+ {
+ return 0x4E71; // NOP
+ }
+ if (effect_start2 && (address >= 0x806502 && address <= 0x806507))
+ {
+ return 0x4E71; // NOP
+ }
+ if (effect_start3 && (address >= 0x806512 && address <= 0x806517))
+ {
+ return 0x4E71; // NOP
+ }
+ if (effect_start4 && (address >= 0x806524 && address <= 0x806527))
+ {
+ return 0x4E71; // NOP
+ }
+ if (effect_start5 && (address >= 0x80653E && address <= 0x806543)) //Collision detection!
+ {
+ return 0x4E71; // NOP
+ }
+ if (effect_start6 && (address >= 0x806544 && address <= 0x806547))
+ {
+ return 0x4E71; // NOP
+ }//*/
+#endif
+//WriteLog("[RM16] Addr: %08X\n", address);
/*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005FBA)
// for(int i=0; i<10000; i++)
WriteLog("[M68K] In routine #6!\n");//*/
//if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005B3C) // GPU Program #2
/*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005BA8) // GPU Program #3
{
- WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, tom_word_read(address));
+ WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address));
gpu_dump_registers();
gpu_dump_disassembly();
// for(int i=0; i<10000; i++)
-// WriteLog( "[M68K] About to run GPU!\n");
+// WriteLog("[M68K] About to run GPU!\n");
}//*/
-//WriteLog( "[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
+//WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
/*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x00006696 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x000066A8)
{
if (address == 0x000066A0)
gpu_dump_disassembly();
}
for(int i=0; i<10000; i++)
- WriteLog( "[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, tom_word_read(address));
+ WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address));
}//*/
unsigned int retVal = 0;
else if ((address >= 0xE00000) && (address <= 0xE3FFFE))
retVal = (jaguar_bootRom[address - 0xE00000] << 8) | jaguar_bootRom[address - 0xE00000 + 1];
else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE))
- retVal = cdrom_word_read(address);
+ retVal = CDROMReadWord(address, M68K);
else if ((address >= 0xF00000) && (address <= 0xF0FFFE))
- retVal = tom_word_read(address);
+ retVal = TOMReadWord(address, M68K);
else if ((address >= 0xF10000) && (address <= 0xF1FFFE))
- retVal = jerry_word_read(address);
+ retVal = JERRYReadWord(address, M68K);
else
-//{
-//WriteLog( "[RM16] Unknown address: %08X\n", address);
- retVal = jaguar_unknown_readword(address);
-//}
+ retVal = jaguar_unknown_readword(address, M68K);
return retVal;
}
unsigned int m68k_read_memory_32(unsigned int address)
{
-//WriteLog( "--> [RM32]\n");
+//WriteLog("--> [RM32]\n");
return (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2);
}
void m68k_write_memory_8(unsigned int address, unsigned int value)
{
+#ifdef CPU_DEBUG_MEMORY
+ if ((address >= 0x000000) && (address <= 0x3FFFFF))
+ {
+ if (startMemLog)
+ {
+ if (value > writeMemMax[address])
+ writeMemMax[address] = value;
+ if (value < writeMemMin[address])
+ writeMemMin[address] = value;
+ }
+ }
+#endif
//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);
+//WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
if ((address >= 0x000000) && (address <= 0x3FFFFF))
jaguar_mainRam[address] = value;
else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF))
- cdrom_byte_write(address, value);
+ CDROMWriteByte(address, value, M68K);
else if ((address >= 0xF00000) && (address <= 0xF0FFFF))
- tom_byte_write(address, value);
+ TOMWriteByte(address, value, M68K);
else if ((address >= 0xF10000) && (address <= 0xF1FFFF))
- jerry_byte_write(address, value);
+ JERRYWriteByte(address, value, M68K);
else
- jaguar_unknown_writebyte(address, value);
+ jaguar_unknown_writebyte(address, value, M68K);
}
void m68k_write_memory_16(unsigned int address, unsigned int value)
{
-extern int dsp_pc;//, dsp_control;
-if (address == 0xF1A116 && (value & 0x01))
-{
- WriteLog(" M68K(16): DSP is GO! (DSP_PC: %08X)\n\n", dsp_pc);
-
-/* static char buffer[512];
- uint32 j = 0xF1B000;
- while (j <= 0xF1BFFF)
+#ifdef CPU_DEBUG_MEMORY
+ if ((address >= 0x000000) && (address <= 0x3FFFFE))
{
- uint32 oldj = j;
- j += dasmjag(JAGUAR_DSP, buffer, j);
- WriteLog( "\t%08X: %s\n", oldj, buffer);
- }
- WriteLog( "\n");//*/
-}
-//else
-// WriteLog("M68K(16): DSP halted... (Old value: %08X)\n", dsp_control);
+ if (startMemLog)
+ {
+ uint8 hi = value >> 8, lo = value & 0xFF;
+
+ if (hi > writeMemMax[address])
+ writeMemMax[address] = hi;
+ if (hi < writeMemMin[address])
+ writeMemMin[address] = hi;
+ if (lo > writeMemMax[address+1])
+ writeMemMax[address+1] = lo;
+ if (lo < writeMemMin[address+1])
+ writeMemMin[address+1] = lo;
+ }
+ }
+#endif
//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);
+//WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
//if (address >= 0xF02200 && address <= 0xF0229F)
// 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 bool suppressOutput;
-if (totalFrames >= 59)
- suppressOutput = false;//*/
-/*if (address == 0xF02114)
+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)
WriteLog("M68K: Writing to GPU_PC (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC));//*/
if ((address >= 0x000000) && (address <= 0x3FFFFE))
{
- jaguar_mainRam[address] = value >> 8;
- jaguar_mainRam[address + 1] = value & 0xFF;
+/* jaguar_mainRam[address] = value >> 8;
+ jaguar_mainRam[address + 1] = value & 0xFF;*/
+ SET16(jaguar_mainRam, address, value);
}
else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE))
- cdrom_word_write(address, value);
+ CDROMWriteWord(address, value, M68K);
else if ((address >= 0xF00000) && (address <= 0xF0FFFE))
- tom_word_write(address, value);
+ TOMWriteWord(address, value, M68K);
else if ((address >= 0xF10000) && (address <= 0xF1FFFE))
- jerry_word_write(address, value);
+ JERRYWriteWord(address, value, M68K);
else
- jaguar_unknown_writeword(address, value);
+ {
+ jaguar_unknown_writeword(address, value, M68K);
+#ifdef LOG_UNMAPPED_MEMORY_ACCESSES
+ WriteLog("\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));
+#endif
+ }
}
void m68k_write_memory_32(unsigned int address, unsigned int value)
{
-extern int dsp_pc;//, dsp_control;
-if (address == 0xF1A114 && (value & 0x01))
- WriteLog("M68K(32): DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
-//else
-// WriteLog("M68K(32): DSP halted... (Old value: %08X)\n", dsp_control);
-
-//WriteLog( "--> [WM32]\n");
+//WriteLog("--> [WM32]\n");
m68k_write_memory_16(address, value >> 16);
m68k_write_memory_16(address + 2, value & 0xFFFF);
}
-
uint32 jaguar_get_handler(uint32 i)
{
-// return (jaguar_word_read(i<<2) << 16) | jaguar_word_read((i<<2) + 2);
-// return (jaguar_word_read(i*4) << 16) | jaguar_word_read((i*4) + 2);
- return jaguar_long_read(i * 4);
+ return JaguarReadLong(i * 4);
}
uint32 jaguar_interrupt_handler_is_valid(uint32 i)
void M68K_show_context(void)
{
- WriteLog( "\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC));
+ WriteLog("\t68K 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("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i));
+ 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("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
- WriteLog( "68K disasm\n");
+ WriteLog("68K disasm\n");
// jaguar_dasm(s68000readPC()-0x1000,0x20000);
jaguar_dasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200);
// jaguar_dasm(0x5000, 0x14414);
- WriteLog( "..................\n");
+ WriteLog("..................\n");
if (tom_irq_enabled(IRQ_VBLANK))
{
- WriteLog( "vblank int: enabled\n");
+ WriteLog("vblank int: enabled\n");
jaguar_dasm(jaguar_get_handler(64), 0x200);
}
else
- WriteLog( "vblank int: disabled\n");
+ WriteLog("vblank int: disabled\n");
- WriteLog( "..................\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 $%08X\n", i, (unsigned int)jaguar_get_handler(i));
}
//
// Unknown read/write byte/word routines
//
-void jaguar_unknown_writebyte(unsigned address, unsigned data)
+// It's hard to believe that developers would be sloppy with their memory writes, yet in
+// some cases the developers screwed up royal. E.g., Club Drive has the following code:
+//
+// 807EC4: movea.l #$f1b000, A1
+// 807ECA: movea.l #$8129e0, A0
+// 807ED0: move.l A0, D0
+// 807ED2: move.l #$f1bb94, D1
+// 807ED8: sub.l D0, D1
+// 807EDA: lsr.l #2, D1
+// 807EDC: move.l (A0)+, (A1)+
+// 807EDE: dbra D1, 807edc
+//
+// The problem is at $807ED0--instead of putting A0 into D0, they really meant to put A1
+// 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*/)
{
#ifdef LOG_UNMAPPED_MEMORY_ACCESSES
- WriteLog( "jaguar: unknown byte %02X write at %08X (PC=%06X)\n", data, address, m68k_get_reg(NULL, M68K_REG_PC));
+ 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;
+ finished = true;
+ extern bool doDSPDis;
+ if (who == DSP)
+ doDSPDis = true;
#endif
}
-void jaguar_unknown_writeword(unsigned address, unsigned data)
+void jaguar_unknown_writeword(unsigned address, unsigned data, uint32 who/*=UNKNOWN*/)
{
#ifdef LOG_UNMAPPED_MEMORY_ACCESSES
- WriteLog( "jaguar: unknown word %04X write at %08X (PC=%06X)\n", data, address, m68k_get_reg(NULL, M68K_REG_PC));
+ 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;
+ finished = true;
+ extern bool doDSPDis;
+ if (who == DSP)
+ doDSPDis = true;
#endif
}
-unsigned jaguar_unknown_readbyte(unsigned address)
+unsigned jaguar_unknown_readbyte(unsigned address, uint32 who/*=UNKNOWN*/)
{
#ifdef LOG_UNMAPPED_MEMORY_ACCESSES
- WriteLog( "jaguar: unknown byte read at %08X (PC=%06X)\n", address, m68k_get_reg(NULL, M68K_REG_PC));
+ 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;
+ finished = true;
+ extern bool doDSPDis;
+ if (who == DSP)
+ doDSPDis = true;
#endif
return 0xFF;
}
-unsigned jaguar_unknown_readword(unsigned address)
+unsigned jaguar_unknown_readword(unsigned address, uint32 who/*=UNKNOWN*/)
{
#ifdef LOG_UNMAPPED_MEMORY_ACCESSES
- WriteLog( "Jaguar: Unknown word read at %08X (PC=%06X)\n", address, m68k_get_reg(NULL, M68K_REG_PC));
+ 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;
+ finished = true;
+ extern bool doDSPDis;
+ if (who == DSP)
+ doDSPDis = true;
#endif
return 0xFFFF;
}
#endif
}
-unsigned jaguar_byte_read(unsigned int offset)
+uint8 JaguarReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
{
uint8 data = 0x00;
offset &= 0xFFFFFF;
if (offset < 0x400000)
-// data = (jaguar_mainRam[(offset^0x01) & 0x3FFFFF]);
data = jaguar_mainRam[offset & 0x3FFFFF];
else if ((offset >= 0x800000) && (offset < 0xC00000))
-// data = (jaguar_mainRom[(offset^0x01)-0x800000]);
data = jaguar_mainRom[offset - 0x800000];
-// else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF))
- data = cdrom_byte_read(offset);
+ data = CDROMReadByte(offset, who);
else if ((offset >= 0xE00000) && (offset < 0xE40000))
-// data = (jaguar_bootRom[(offset^0x01) & 0x3FFFF]);
data = jaguar_bootRom[offset & 0x3FFFF];
else if ((offset >= 0xF00000) && (offset < 0xF10000))
- data = tom_byte_read(offset);
+ data = TOMReadByte(offset, who);
else if ((offset >= 0xF10000) && (offset < 0xF20000))
- data = jerry_byte_read(offset);
+ data = JERRYReadByte(offset, who);
else
- data = jaguar_unknown_readbyte(offset);
+ data = jaguar_unknown_readbyte(offset, who);
return data;
}
-unsigned jaguar_word_read(unsigned int offset)
+uint16 JaguarReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
{
-//TEMP--Mirror of F03000?
-/*if (offset >= 0xF0B000 && offset <= 0xF0BFFF)
-WriteLog( "[JWR16] --> Possible GPU RAM mirror access! [%08X]\n", offset);//*/
-
offset &= 0xFFFFFF;
if (offset <= 0x3FFFFE)
{
-// return (jaguar_mainRam[(offset+1) & 0x3FFFFF] << 8) | jaguar_mainRam[(offset+0) & 0x3FFFFF];
return (jaguar_mainRam[(offset+0) & 0x3FFFFF] << 8) | jaguar_mainRam[(offset+1) & 0x3FFFFF];
}
else if ((offset >= 0x800000) && (offset <= 0xBFFFFE))
{
offset -= 0x800000;
-// return (jaguar_mainRom[offset+1] << 8) | jaguar_mainRom[offset+0];
return (jaguar_mainRom[offset+0] << 8) | jaguar_mainRom[offset+1];
}
// else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE))
- return cdrom_word_read(offset);
+ return CDROMReadWord(offset, who);
else if ((offset >= 0xE00000) && (offset <= 0xE3FFFE))
-// return *((uint16 *)&jaguar_bootRom[offset & 0x3FFFF]);
return (jaguar_bootRom[(offset+0) & 0x3FFFF] << 8) | jaguar_bootRom[(offset+1) & 0x3FFFF];
else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE))
- return tom_word_read(offset);
+ return TOMReadWord(offset, who);
else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE))
-//{
-//WriteLog("Reading from JERRY offset %08X...\n", offset);
- return jerry_word_read(offset);
-//}
+ return JERRYReadWord(offset, who);
- return jaguar_unknown_readword(offset);
+ return jaguar_unknown_readword(offset, who);
}
-void jaguar_byte_write(unsigned offset, unsigned data)
+void JaguarWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
{
offset &= 0xFFFFFF;
if (offset < 0x400000)
{
-// jaguar_mainRam[(offset^0x01) & 0x3FFFFF] = data;
jaguar_mainRam[offset & 0x3FFFFF] = data;
return;
}
-// else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF))
{
- cdrom_byte_write(offset, data);
+ CDROMWriteByte(offset, data, who);
return;
}
else if ((offset >= 0xF00000) && (offset <= 0xF0FFFF))
{
- tom_byte_write(offset, data);
+ TOMWriteByte(offset, data, who);
return;
}
else if ((offset >= 0xF10000) && (offset <= 0xF1FFFF))
{
- jerry_byte_write(offset, data);
+ JERRYWriteByte(offset, data, who);
return;
}
- jaguar_unknown_writebyte(offset, data);
+ jaguar_unknown_writebyte(offset, data, who);
}
-void jaguar_word_write(unsigned offset, unsigned data)
+void JaguarWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
{
-extern int dsp_pc;//, dsp_control;
-if (offset == 0xF1A116 && (data & 0x01))
- WriteLog(" JagWW: DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
-//else
-// WriteLog("JagWW: DSP halted... (Old value: %08X)\n", dsp_control);
-
-//extern int blit_start_log;
-//if (blit_start_log)
-/*{
- if (offset == 0x0674DE)
- WriteLog( "[JWW16] Bad write starting @ 0674DE! [%04X]\n", data);
-}//*/
-//TEMP--Mirror of F03000?
-//if (offset >= 0xF0B000 && offset <= 0xF0BFFF)
-//WriteLog( "[JWW16] --> Possible GPU RAM mirror access! [%08X]", offset);
-//if ((offset >= 0x1FF020 && offset <= 0x1FF03F) || (offset >= 0x1FF820 && offset <= 0x1FF83F))
-// WriteLog("JagWW: Writing %04X at %08X\n", data, offset);
+//TEMP--Mirror of F03000? Yes, but only 32-bit CPUs can do it (i.e., NOT the 68K!)
+// PLUS, you would handle this in the GPU/DSP WriteLong code! Not here!
offset &= 0xFFFFFF;
-
+
if (offset <= 0x3FFFFE)
{
-// jaguar_mainRam[(offset+0) & 0x3FFFFF] = data & 0xFF;
-// jaguar_mainRam[(offset+1) & 0x3FFFFF] = (data>>8) & 0xFF;
+//This MUST be done by the 68K!
+/*if (offset == 0x670C)
+ WriteLog("Jaguar: %s writing to location $670C...\n", whoName[who]);*/
+
jaguar_mainRam[(offset+0) & 0x3FFFFF] = (data>>8) & 0xFF;
jaguar_mainRam[(offset+1) & 0x3FFFFF] = data & 0xFF;
return;
}
- else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE))
+ else if (offset >= 0xDFFF00 && offset <= 0xDFFFFE)
{
- cdrom_word_write(offset, data);
+ CDROMWriteWord(offset, data, who);
return;
}
- else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE))
+ else if (offset >= 0xF00000 && offset <= 0xF0FFFE)
{
- tom_word_write(offset, data);
+ TOMWriteWord(offset, data, who);
return;
}
- else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE))
+ else if (offset >= 0xF10000 && offset <= 0xF1FFFE)
{
- jerry_word_write(offset, data);
+ JERRYWriteWord(offset, data, who);
return;
}
-
- jaguar_unknown_writeword(offset, data);
+ // Don't bomb on attempts to write to ROM
+ else if (offset >= 0x800000 && offset <= 0xEFFFFF)
+ return;
+
+ jaguar_unknown_writeword(offset, data, who);
}
-unsigned jaguar_long_read(unsigned int offset)
+// We really should re-do this so that it does *real* 32-bit access... !!! FIX !!!
+uint32 JaguarReadLong(uint32 offset, uint32 who/*=UNKNOWN*/)
{
- return (jaguar_word_read(offset) << 16) | jaguar_word_read(offset+2);
+ return (JaguarReadWord(offset, who) << 16) | JaguarReadWord(offset+2, who);
}
-void jaguar_long_write(unsigned offset, unsigned data)
+// We really should re-do this so that it does *real* 32-bit access... !!! FIX !!!
+void JaguarWriteLong(uint32 offset, uint32 data, uint32 who/*=UNKNOWN*/)
{
-extern int dsp_pc;//, dsp_control;
-if (offset == 0xF1A114 && (data & 0x01))
- WriteLog("JagLW: DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
-//else
-// WriteLog("JagLW: DSP halted... (Old value: %08X)\n", dsp_control);
+/* extern bool doDSPDis;
+ if (offset < 0x400 && !doDSPDis)
+ {
+ WriteLog("JLW: Write to %08X by %s... Starting DSP log!\n\n", offset, whoName[who]);
+ doDSPDis = true;
+ }//*/
- jaguar_word_write(offset, data >> 16);
- jaguar_word_write(offset+2, data & 0xFFFF);
+ JaguarWriteWord(offset, data >> 16, who);
+ JaguarWriteWord(offset+2, data & 0xFFFF, who);
}
//
//
void jaguar_init(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_bootRom, 0x040000, "Jaguar 68K CPU BIOS ROM");
memory_malloc_secure((void **)&jaguar_mainRom, 0x600000, "Jaguar 68K CPU ROM");
memset(jaguar_mainRam, 0x00, 0x400000);
// memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs...
- memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s...
+// memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s...
+//NOTE: This *doesn't* fix FlipOut...
+ memset(jaguar_mainRom, 0x01, 0x600000); // & set it to all 01s...
// cd_bios_boot("C:\\ftp\\jaguar\\cd\\Brain Dead 13.cdi");
// cd_bios_boot("C:\\ftp\\jaguar\\cd\\baldies.cdi");
// cd_bios_boot("C:\\ftp\\jaguar\\cd\\primalrage.cdi");
// cd_bios_boot("C:\\ftp\\jaguar\\cd\\Dragons Lair.cdi");
-// NTSC PAL
-// GPU/DSP/video clock rate 26.590906 26.593900
-// 68000 clock rate 13.295453 13.296950
-// (clock rates in MHz)
-
- // Should these be hardwired or read from VP?
- jaguar_screen_scanlines = (hardwareTypeNTSC ? 524 : 624);
-//Should the divisor be 50 for PAL??? Let's try it!
- m68k_cycles_per_scanline = (hardwareTypeNTSC ? 13295453 : 13296950) / (jaguar_screen_scanlines * (hardwareTypeNTSC ? 60 : 50));
- gpu_cycles_per_scanline = dsp_cycles_per_scanline
- = (hardwareTypeNTSC ? 26590906 : 26593900) / (jaguar_screen_scanlines * (hardwareTypeNTSC ? 60 : 50));
-
-#ifdef SOUND_OUTPUT
- ws_audio_init();
-#endif
-
m68k_set_cpu_type(M68K_CPU_TYPE_68000);
gpu_init();
- dsp_init();
+ DSPInit();
tom_init();
jerry_init();
cdrom_init();
void jaguar_done(void)
{
+#ifdef CPU_DEBUG_MEMORY
+/* WriteLog("\n\nM68000 disassembly at $8D0D44 (collision routine!)...\n");
+ jaguar_dasm(0x8D0D44, 5000);
+ WriteLog("\n");//*/
+/* WriteLog("\n\nM68000 disassembly at $806300 (look @ $806410)...\n");
+ jaguar_dasm(0x806300, 5000);
+ WriteLog("\n");//*/
+
+/* WriteLog("\nJaguar: Memory Usage Stats (return addresses)\n\n");
+
+ for(uint32 i=0; i<=raPtr; i++)
+ {
+ WriteLog("\t%08X\n", returnAddr[i]);
+ WriteLog("M68000 disassembly at $%08X...\n", returnAddr[i] - 16);
+ jaguar_dasm(returnAddr[i] - 16, 16);
+ WriteLog("\n");
+ }
+ WriteLog("\n");//*/
+
+/* int start = 0, end = 0;
+ bool endTriggered = false, startTriggered = false;
+ for(int i=0; i<0x400000; i++)
+ {
+ if (readMem[i] && writeMemMin[i] != 0xFF && writeMemMax != 0x00)
+ {
+ if (!startTriggered)
+ startTriggered = true, endTriggered = false, start = i;
+
+ WriteLog("\t\tMin/Max @ %06X: %u/%u\n", i, writeMemMin[i], writeMemMax[i]);
+ }
+ else
+ {
+ if (!endTriggered)
+ {
+ end = i - 1, endTriggered = true, startTriggered = false;
+ WriteLog("\tMemory range accessed: %06X - %06X\n", start, end);
+ }
+ }
+ }
+ WriteLog("\n");//*/
+#endif
//#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", jaguar_long_read(topOfStack));
+ WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack));
for(int i=-2; i<9; i++)
- WriteLog("%06X: %08X\n", topOfStack + (i * 4), jaguar_long_read(topOfStack + (i * 4)));
+ WriteLog("%06X: %08X\n", topOfStack + (i * 4), JaguarReadLong(topOfStack + (i * 4)));
/* WriteLog("\nM68000 disassembly at $802288...\n");
jaguar_dasm(0x802288, 3);
jaguar_dasm(0x802B00, 500);
WriteLog("\n");//*/
-// WriteLog("Jaguar: CD BIOS version %04X\n", jaguar_word_read(0x3004));
- WriteLog("Jaguar: Interrupt enable = %02X\n", tom_byte_read(0xF000E1) & 0x1F);
+/* WriteLog("\n\nM68000 disassembly at $809900 (look @ $8099F8)...\n");
+ jaguar_dasm(0x809900, 500);
+ WriteLog("\n");//*/
+//8099F8
+/* WriteLog("\n\nDump of $8093C8:\n\n");
+ for(int i=0x8093C8; i<0x809900; i+=4)
+ WriteLog("%06X: %08X\n", i, JaguarReadLong(i));//*/
+/* WriteLog("\n\nM68000 disassembly at $90006C...\n");
+ jaguar_dasm(0x90006C, 500);
+ 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");
M68K_show_context();
//#endif
-#ifdef SOUND_OUTPUT
- ws_audio_done();
-#endif
+
cd_bios_done();
cdrom_done();
+ gpu_done();
+ DSPDone();
tom_done();
jerry_done();
+
memory_free(jaguar_mainRom);
memory_free(jaguar_bootRom);
memory_free(jaguar_mainRam);
void jaguar_reset(void)
{
- if (jaguar_use_bios)
+ if (vjs.useJaguarBIOS)
memcpy(jaguar_mainRam, jaguar_bootRom, 8);
else
{
- SET32(jaguar_mainRam, 4, 0x00802000);
+// Should also make a run address global as well, for when we reset the jag (PD mainly)
+/* SET32(jaguar_mainRam, 4, 0x00802000);
// Handle PD stuff...
// This should definitely go elsewhere (like in the cart load section)!
+//NOTE: The bytes 'JAGR' should also be at position $1C...
if (jaguar_mainRom[0] == 0x60 && jaguar_mainRom[1] == 0x1A)
{
- uint32 runAddress = GET32(jaguar_mainRom, 0x2A);
- uint32 progLength = GET32(jaguar_mainRom, 0x02);
- WriteLog("Setting up PD ROM... Run address: %08X, length: %08X\n", runAddress, progLength);
- memcpy(jaguar_mainRam + runAddress, jaguar_mainRom + 0x2E, progLength);
+ uint32 loadAddress = GET32(jaguar_mainRom, 0x22), runAddress = GET32(jaguar_mainRom, 0x2A);
+//This is not always right! Especially when converted via bin2jag1!!!
+//We should have access to the length of the furshlumiger file that was loaded anyway!
+//Now, we do! ;-)
+// uint32 progLength = GET32(jaguar_mainRom, 0x02);
+//jaguarRomSize
+//jaguarRunAddress
+// WriteLog("Jaguar: Setting up PD ROM... Run address: %08X, length: %08X\n", runAddress, progLength);
+// memcpy(jaguar_mainRam + loadAddress, jaguar_mainRom + 0x2E, progLength);
+ WriteLog("Jaguar: Setting up PD ROM... Run address: %08X, length: %08X\n", runAddress, jaguarRomSize - 0x2E);
+ memcpy(jaguar_mainRam + loadAddress, jaguar_mainRom + 0x2E, jaguarRomSize - 0x2E);
SET32(jaguar_mainRam, 4, runAddress);
- }
+ }//*/
+ SET32(jaguar_mainRam, 4, jaguarRunAddress);
}
// WriteLog("jaguar_reset():\n");
-#ifdef SOUND_OUTPUT
- ws_audio_reset();
-#endif
+//#ifdef SOUND_OUTPUT
+// ws_audio_reset();
+//#endif
cd_bios_reset();
tom_reset();
jerry_reset();
gpu_reset();
- dsp_reset();
+ DSPReset();
cdrom_reset();
m68k_pulse_reset(); // Reset the 68000
- WriteLog( "\t68K PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7));
-}
-
-void jaguar_reset_handler(void)
-{
-}
-
-void jaguar_exec(int16 * backbuffer, bool render)
-{
- uint32 i, vblank_duration = tom_get_vdb();
-
- // vblank
- if ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64)))
- {
- if (jaguar_word_read(0xF0004E) != 0x07FF) // VI (11 bits wide!)
- {
- tom_set_pending_video_int();
-// s68000interrupt(7, IRQ_VBLANK+64);
-// s68000flushInterrupts();
- m68k_set_irq(7); // IRQ_VBLANK+64??? Not autovectored??? No.
-// Could set a global variable here, to signal that this is a VBLANK interrupt...
-// Then again, since IRQ_VBLANK is set to zero, this would not be necessary in this case.
- }
- }
-
- for(i=0; i<vblank_duration; i++)
- {
-/* uint32 invalid_instruction_address = s68000exec(m68k_cycles_per_scanline);
- if (invalid_instruction_address != 0x80000000)
- cd_bios_process(invalid_instruction_address);*/
- m68k_execute(m68k_cycles_per_scanline);
- // No CD handling... !!! FIX !!!
-
- cd_bios_exec(i);
- tom_pit_exec(m68k_cycles_per_scanline);
- tom_exec_scanline(backbuffer, i, false);
- jerry_pit_exec(m68k_cycles_per_scanline);
- jerry_i2s_exec(m68k_cycles_per_scanline);
- gpu_exec(gpu_cycles_per_scanline);
- if (dsp_enabled)
- dsp_exec(dsp_cycles_per_scanline);
- }
-
- for (; i<jaguar_screen_scanlines; i++)
- {
-/* uint32 invalid_instruction_address = s68000exec(m68k_cycles_per_scanline);
- if (invalid_instruction_address != 0x80000000)
- cd_bios_process(invalid_instruction_address);*/
- m68k_execute(m68k_cycles_per_scanline);
- // No CD handling... !!! FIX !!!
- cd_bios_exec(i);
- tom_pit_exec(m68k_cycles_per_scanline);
- jerry_pit_exec(m68k_cycles_per_scanline);
- jerry_i2s_exec(m68k_cycles_per_scanline);
- tom_exec_scanline(backbuffer, i, render);
- gpu_exec(gpu_cycles_per_scanline);
- if (dsp_enabled)
- dsp_exec(dsp_cycles_per_scanline);
- backbuffer += tom_width;
- }
-#ifdef SOUND_OUTPUT
- system_sound_update();
-#endif
+ WriteLog("\t68K PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7));
}
//
//
void JaguarExecute(int16 * backbuffer, bool render)
{
- uint16 vp = tom_word_read(0xF0003E);//Hmm. This is a WO register. Will work? Looks like. But wrong behavior!
- uint16 vi = tom_word_read(0xF0004E);//Another WO register...
- uint16 vdb = tom_word_read(0xF00046);
-// uint16 endingLine =
+ 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...
+// uint16 vdb = TOMReadWord(0xF00046);
//Note: This is the *definite* end of the display, though VDE *might* be less than this...
-// uint16 vbb = tom_word_read(0xF00040);
+// 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...
- uint16 vde = tom_word_read(0xF00048);
+//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, VDB=%u, VBB=%u CPU CPS=%u, GPU CPS=%u\n", vp, vi, vdb, vbb, m68k_cycles_per_scanline, gpu_cycles_per_scanline);
+ WriteLog("JagExe: VP=%u, VI=%u, VDB=%u, VBB=%u CPU CPS=%u, GPU CPS=%u\n", vp, vi, vdb, vbb, M68KCyclesPerScanline, RISCCyclesPerScanline);
}//*/
+//extern int start_logging;
for(uint16 i=0; i<vp; i++)
{
// Increment the horizontal count (why? RNG?)
- tom_word_write(0xF00004, tom_word_read(0xF00004) + 1);
+ TOMWriteWord(0xF00004, (TOMReadWord(0xF00004) + 1) & 0x7FF);
- tom_word_write(0xF00006, i); // Write the VC
+ TOMWriteWord(0xF00006, i); // Write the VC
if (i == vi) // Time for Vertical Interrupt?
{
- if (tom_irq_enabled(IRQ_VBLANK) && jaguar_interrupt_handler_is_valid(64))
+ if (tom_irq_enabled(IRQ_VBLANK))// && jaguar_interrupt_handler_is_valid(64))
{
// We don't have to worry about autovectors & whatnot because the Jaguar
- // tells you through registers who sent the interrupt...
+ // tells you through its HW registers who sent the interrupt...
tom_set_pending_video_int();
m68k_set_irq(7);
}
}
-
-// uint32 invalid_instruction_address = s68000exec(m68k_cycles_per_scanline);
+
+// uint32 invalid_instruction_address = s68000exec(M68KCyclesPerScanline);
// if (invalid_instruction_address != 0x80000000)
// cd_bios_process(invalid_instruction_address);
- // These are divided by 2 because we're executing *half* lines...!
- m68k_execute(m68k_cycles_per_scanline / 2);
+//if (start_logging)
+// WriteLog("About to execute M68K (%u)...\n", i);
+ m68k_execute(M68KCyclesPerScanline);
// No CD handling... !!! FIX !!!
+//if (start_logging)
+// WriteLog("About to execute CD BIOS (%u)...\n", i);
cd_bios_exec(i); // NOTE: Ignores parameter...
- tom_pit_exec(m68k_cycles_per_scanline / 2);
- jerry_pit_exec(m68k_cycles_per_scanline / 2);
- jerry_i2s_exec(m68k_cycles_per_scanline / 2);
- gpu_exec(gpu_cycles_per_scanline / 2);
- if (dsp_enabled)
- dsp_exec(dsp_cycles_per_scanline / 2);
-
-//Interlacing is still not handled correctly here...
- if (i >= vdb && i < vde)//vbb)
- {
- if (!(i & 0x01)) // Execute OP only on even lines (non-interlaced only!)
- {
- tom_exec_scanline(backbuffer, i/2, render); // i/2 is a kludge...
- backbuffer += TOMGetSDLScreenPitch() / 2; // Convert bytes to words...
- }
- }
+//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);
+ jerry_pit_exec(RISCCyclesPerScanline);
+//if (start_logging)
+// WriteLog("About to execute JERRY's SSI (%u)...\n", i);
+ jerry_i2s_exec(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);
}
-
-#ifdef SOUND_OUTPUT
- system_sound_update();
-#endif
}
// Temp debugging stuff
projects / virtualjaguar / blobdiff