4 // Originally by David Raingeard (Cal2)
5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Carwin Jones (BeOS)
6 // Cleanups and endian wrongness amelioration by James Hammons
7 // Note: Endian wrongness probably stems from the MAME origins of this emu and
8 // the braindead way in which MAME handled memory when this was written. :-)
10 // JLH = James Hammons
11 // JPM = Jean-Paul Mari
14 // --- ---------- -----------------------------------------------------------
15 // JLH 11/25/2009 Major rewrite of memory subsystem and handlers
16 // JPM 09/04/2018 Added the new Models and BIOS handler
17 // JPM 10/13/2018 Added breakpoints features
18 // JPM Aug./2019 Fix specific breakpoint for ROM cartridge or unknown memory location writing; added a specific breakpoint for the M68K illegal & unimplemented instruction, unknown exceptions and address error exceptions
22 #define NEWMODELSBIOSHANDLER // New Jaguar models and bios usage handler
26 #include <QApplication>
27 #include <QMessageBox>
30 #include "SDL_opengl.h"
42 #include "m68000/m68kinterface.h"
48 //#include "debugger/BreakpointsWin.h"
49 #ifdef NEWMODELSBIOSHANDLER
50 #include "modelsBIOS.h"
54 //Do this in makefile??? Yes! Could, but it's easier to define here...
55 //#define LOG_UNMAPPED_MEMORY_ACCESSES
56 //#define ABORT_ON_UNMAPPED_MEMORY_ACCESS
57 //#define ABORT_ON_ILLEGAL_INSTRUCTIONS
58 //#define ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION
59 #define CPU_DEBUG_MEMORY
60 //#define LOG_CD_BIOS_CALLS
61 #define CPU_DEBUG_TRACING
62 #define ALPINE_FUNCTIONS
64 // Private function prototypes
66 unsigned jaguar_unknown_readbyte(unsigned address
, uint32_t who
= UNKNOWN
);
67 unsigned jaguar_unknown_readword(unsigned address
, uint32_t who
= UNKNOWN
);
68 void jaguar_unknown_writebyte(unsigned address
, unsigned data
, uint32_t who
= UNKNOWN
);
69 void jaguar_unknown_writeword(unsigned address
, unsigned data
, uint32_t who
= UNKNOWN
);
70 void M68K_show_context(void);
72 void M68K_Debughalt(void);
77 #ifdef CPU_DEBUG_MEMORY
78 extern bool startMemLog
; // Set by "e" key
79 extern int effect_start
;
80 extern int effect_start2
, effect_start3
, effect_start4
, effect_start5
, effect_start6
;
83 // Really, need to include memory.h for this, but it might interfere with some stuff...
84 extern uint8_t jagMemSpace
[];
88 uint32_t jaguar_active_memory_dumps
= 0;
90 uint32_t jaguarMainROMCRC32
, jaguarROMSize
, jaguarRunAddress
;
91 bool jaguarCartInserted
= false;
92 bool lowerField
= false;
94 #ifdef CPU_DEBUG_MEMORY
95 uint8_t writeMemMax
[0x400000], writeMemMin
[0x400000];
96 uint8_t readMem
[0x400000];
97 uint32_t returnAddr
[4000], raPtr
= 0xFFFFFFFF;
100 uint32_t pcQueue
[0x400];
101 uint32_t a0Queue
[0x400];
102 uint32_t a1Queue
[0x400];
103 uint32_t a2Queue
[0x400];
104 uint32_t a3Queue
[0x400];
105 uint32_t a4Queue
[0x400];
106 uint32_t a5Queue
[0x400];
107 uint32_t a6Queue
[0x400];
108 uint32_t a7Queue
[0x400];
109 uint32_t d0Queue
[0x400];
110 uint32_t d1Queue
[0x400];
111 uint32_t d2Queue
[0x400];
112 uint32_t d3Queue
[0x400];
113 uint32_t d4Queue
[0x400];
114 uint32_t d5Queue
[0x400];
115 uint32_t d6Queue
[0x400];
116 uint32_t d7Queue
[0x400];
117 uint32_t srQueue
[0x400];
119 bool startM68KTracing
= false;
121 // Breakpoint on memory access vars (exported)
122 bool bpmActive
= false;
123 bool bpmSaveActive
= false;
125 uint32_t bpmAddress1
;
131 // Callback function to detect illegal instructions
133 void GPUDumpDisassembly(void);
134 void GPUDumpRegisters(void);
135 static bool start
= false;
137 void M68KInstructionHook(void)
139 uint32_t m68kPC
= m68k_get_reg(NULL
, M68K_REG_PC
);
140 // Temp, for comparing...
142 /* static char buffer[2048];//, mem[64];
143 m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
144 printf("%08X: %s\n", m68kPC, buffer);//*/
146 //JaguarDasm(m68kPC, 1);
147 //Testing Hover Strike...
150 static int hitCount
= 0;
151 static int inRoutine
= 0;
154 //if (regs.pc == 0x80340A)
155 if (m68kPC
== 0x803416)
160 printf("%i: $80340A start. A0=%08X, A1=%08X ", hitCount
, m68k_get_reg(NULL
, M68K_REG_A0
), m68k_get_reg(NULL
, M68K_REG_A1
));
162 else if (m68kPC
== 0x803422)
165 printf("(%i instructions)\n", instSeen
);
172 // For code tracing...
173 #ifdef CPU_DEBUG_TRACING
174 if (startM68KTracing
)
176 static char buffer
[2048];
178 m68k_disassemble(buffer
, m68kPC
, 0, 1);
179 WriteLog("%06X: %s\n", m68kPC
, buffer
);
184 // Ideally, we'd save all the registers as well...
185 pcQueue
[pcQPtr
] = m68kPC
;
186 a0Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A0
);
187 a1Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A1
);
188 a2Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A2
);
189 a3Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A3
);
190 a4Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A4
);
191 a5Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A5
);
192 a6Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A6
);
193 a7Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_A7
);
194 d0Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D0
);
195 d1Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D1
);
196 d2Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D2
);
197 d3Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D3
);
198 d4Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D4
);
199 d5Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D5
);
200 d6Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D6
);
201 d7Queue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_D7
);
202 srQueue
[pcQPtr
] = m68k_get_reg(NULL
, M68K_REG_SR
);
206 if (m68kPC
& 0x01) // Oops! We're fetching an odd address!
208 WriteLog("M68K: Attempted to execute from an odd address!\n\nBacktrace:\n\n");
210 static char buffer
[2048];
211 for(int i
=0; i
<0x400; i
++)
213 // WriteLog("[A2=%08X, D0=%08X]\n", a2Queue[(pcQPtr + i) & 0x3FF], d0Queue[(pcQPtr + i) & 0x3FF]);
214 WriteLog("[A0=%08X, A1=%08X, A2=%08X, A3=%08X, A4=%08X, A5=%08X, A6=%08X, A7=%08X, D0=%08X, D1=%08X, D2=%08X, D3=%08X, D4=%08X, D5=%08X, D6=%08X, D7=%08X, SR=%04X]\n", a0Queue
[(pcQPtr
+ i
) & 0x3FF], a1Queue
[(pcQPtr
+ i
) & 0x3FF], a2Queue
[(pcQPtr
+ i
) & 0x3FF], a3Queue
[(pcQPtr
+ i
) & 0x3FF], a4Queue
[(pcQPtr
+ i
) & 0x3FF], a5Queue
[(pcQPtr
+ i
) & 0x3FF], a6Queue
[(pcQPtr
+ i
) & 0x3FF], a7Queue
[(pcQPtr
+ i
) & 0x3FF], d0Queue
[(pcQPtr
+ i
) & 0x3FF], d1Queue
[(pcQPtr
+ i
) & 0x3FF], d2Queue
[(pcQPtr
+ i
) & 0x3FF], d3Queue
[(pcQPtr
+ i
) & 0x3FF], d4Queue
[(pcQPtr
+ i
) & 0x3FF], d5Queue
[(pcQPtr
+ i
) & 0x3FF], d6Queue
[(pcQPtr
+ i
) & 0x3FF], d7Queue
[(pcQPtr
+ i
) & 0x3FF], srQueue
[(pcQPtr
+ i
) & 0x3FF]);
215 m68k_disassemble(buffer
, pcQueue
[(pcQPtr
+ i
) & 0x3FF], 0, 1);//M68K_CPU_TYPE_68000);
216 WriteLog("\t%08X: %s\n", pcQueue
[(pcQPtr
+ i
) & 0x3FF], buffer
);
220 uint32_t topOfStack
= m68k_get_reg(NULL
, M68K_REG_A7
);
221 WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack
));
222 for(int i
=0; i
<10; i
++)
223 WriteLog("%06X: %08X\n", topOfStack
- (i
* 4), JaguarReadLong(topOfStack
- (i
* 4)));
224 WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO
)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled");
230 // Disassemble everything
232 static char buffer[2048];
233 m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
234 WriteLog("%08X: %s", m68kPC, buffer);
235 WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n",
236 m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1),
237 m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1));
239 /* if (m68kPC >= 0x807EC4 && m68kPC <= 0x807EDB)
241 static char buffer[2048];
242 m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
243 WriteLog("%08X: %s", m68kPC, buffer);
244 WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n",
245 m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1),
246 m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1));
248 /* if (m68kPC == 0x8D0E48 && effect_start5)
250 WriteLog("\nM68K: At collision detection code. Exiting!\n\n");
252 GPUDumpDisassembly();
256 /* uint16_t opcode = JaguarReadWord(m68kPC);
257 if (opcode == 0x4E75) // RTS
260 // WriteLog("Jaguar: Returning from subroutine to %08X\n", JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7)));
262 uint32_t addr = JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7));
264 if (raPtr != 0xFFFFFFFF)
266 for(uint32_t i=0; i<=raPtr; i++)
268 if (returnAddr[i] == addr)
277 returnAddr[++raPtr] = addr;
281 //Flip Out! debugging...
284 00805FDC: movea.l #$9c6f8, A0 D0=00100010, A0=00100000
285 00805FE2: move.w #$10, (A0)+ D0=00100010, A0=0009C6F8
286 00805FE6: cmpa.l #$c96f8, A0 D0=00100010, A0=0009C6FA
287 00805FEC: bne 805fe2 D0=00100010, A0=0009C6FA
289 0080603A: move.l #$11ed7c, $100.w D0=61700080, A0=000C96F8, D1=00000000, A1=000040D8
291 0012314C: move.l (A0)+, (A1)+ D0=61700080, A0=00124174, D1=00000000, A1=00F03FFC
292 0012314E: cmpa.l #$f04000, A1 D0=61700080, A0=00124178, D1=00000000, A1=00F04000
293 00123154: blt 12314c D0=61700080, A0=00124178, D1=00000000, A1=00F04000
294 00123156: move.l #$0, $f035d0.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000
295 00123160: move.l #$f03000, $f02110.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000
296 0012316A: move.l #$1, $f02114.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000
297 00123174: rts D0=61700080, A0=00124178, D1=00000000, A1=00F04000
299 /* static char buffer[2048];
300 //if (m68kPC > 0x805F48) start = true;
301 //if (m68kPC > 0x806486) start = true;
302 //if (m68kPC == 0x805FEE) start = true;
303 //if (m68kPC == 0x80600C)// start = true;
304 if (m68kPC == 0x802058) start = true;
306 // GPUDumpRegisters();
307 // GPUDumpDisassembly();
309 // M68K_show_context();
315 m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
316 WriteLog("%08X: %s \t\tD0=%08X, A0=%08X, D1=%08X, A1=%08X\n", m68kPC, buffer, m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_A1));
319 /* if (m68kPC == 0x803F16)
321 WriteLog("M68K: Registers found at $803F16:\n");
322 WriteLog("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC));
323 for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++)
324 WriteLog("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i));
326 for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++)
327 WriteLog("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
329 //Looks like the DSP is supposed to return $12345678 when it finishes its validation routine...
330 // !!! Investigate !!!
331 /*extern bool doDSPDis;
332 static bool disgo = false;
333 if (m68kPC == 0x50222)
336 // WriteLog("M68K: About to stuff $12345678 into $F1B000 (=%08X)...\n", DSPReadLong(0xF1B000, M68K));
337 // DSPWriteLong(0xF1B000, 0x12345678, M68K);
340 if (m68kPC == 0x5000)
345 static char buffer[2048];
346 m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000);
347 WriteLog("%08X: %s", m68kPC, buffer);
348 WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n",
349 m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1),
350 m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2));
352 /* if (m68kPC == 0x82E1A)
354 static char buffer[2048];
355 m68k_disassemble(buffer, m68kPC, 0);//M68K_CPU_TYPE_68000);
356 WriteLog("--> [Routine start] %08X: %s", m68kPC, buffer);
357 WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X(cmd), D1=%08X(# bytes), D2=%08X\n",
358 m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1),
359 m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2));
361 /* if (m68kPC == 0x82E58)
362 WriteLog("--> [Routine end]\n");
363 if (m68kPC == 0x80004)
365 WriteLog("--> [Calling BusWrite2] D2: %08X\n", m68k_get_reg(NULL, M68K_REG_D2));
366 // m68k_set_reg(M68K_REG_D2, 0x12345678);
369 #ifdef LOG_CD_BIOS_CALLS
392 if (m68kPC
== 0x3000)
393 WriteLog("M68K: CD_init\n");
394 else if (m68kPC
== 0x3006 + (6 * 0))
395 WriteLog("M68K: CD_mode\n");
396 else if (m68kPC
== 0x3006 + (6 * 1))
397 WriteLog("M68K: CD_ack\n");
398 else if (m68kPC
== 0x3006 + (6 * 2))
399 WriteLog("M68K: CD_jeri\n");
400 else if (m68kPC
== 0x3006 + (6 * 3))
401 WriteLog("M68K: CD_spin\n");
402 else if (m68kPC
== 0x3006 + (6 * 4))
403 WriteLog("M68K: CD_stop\n");
404 else if (m68kPC
== 0x3006 + (6 * 5))
405 WriteLog("M68K: CD_mute\n");
406 else if (m68kPC
== 0x3006 + (6 * 6))
407 WriteLog("M68K: CD_umute\n");
408 else if (m68kPC
== 0x3006 + (6 * 7))
409 WriteLog("M68K: CD_paus\n");
410 else if (m68kPC
== 0x3006 + (6 * 8))
411 WriteLog("M68K: CD_upaus\n");
412 else if (m68kPC
== 0x3006 + (6 * 9))
413 WriteLog("M68K: CD_read\n");
414 else if (m68kPC
== 0x3006 + (6 * 10))
415 WriteLog("M68K: CD_uread\n");
416 else if (m68kPC
== 0x3006 + (6 * 11))
417 WriteLog("M68K: CD_setup\n");
418 else if (m68kPC
== 0x3006 + (6 * 12))
419 WriteLog("M68K: CD_ptr\n");
420 else if (m68kPC
== 0x3006 + (6 * 13))
421 WriteLog("M68K: CD_osamp\n");
422 else if (m68kPC
== 0x3006 + (6 * 14))
423 WriteLog("M68K: CD_getoc\n");
424 else if (m68kPC
== 0x3006 + (6 * 15))
425 WriteLog("M68K: CD_initm\n");
426 else if (m68kPC
== 0x3006 + (6 * 16))
427 WriteLog("M68K: CD_initf\n");
428 else if (m68kPC
== 0x3006 + (6 * 17))
429 WriteLog("M68K: CD_switch\n");
431 if (m68kPC
>= 0x3000 && m68kPC
<= 0x306C)
432 WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n",
433 m68k_get_reg(NULL
, M68K_REG_A0
), m68k_get_reg(NULL
, M68K_REG_A1
),
434 m68k_get_reg(NULL
, M68K_REG_D0
), m68k_get_reg(NULL
, M68K_REG_D1
), m68k_get_reg(NULL
, M68K_REG_D2
));
437 #ifdef ABORT_ON_ILLEGAL_INSTRUCTIONS
438 if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC
), 0))//M68K_CPU_TYPE_68000))
440 #ifndef ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION
441 if (m68k_read_memory_16(m68kPC
) == 0x4AFC)
443 // This is a kludge to let homebrew programs work properly (i.e., let the other processors
444 // keep going even when the 68K dumped back to the debugger or what have you).
446 // m68k_set_reg(M68K_REG_PC, m68kPC - 2);
447 // Try setting the vector to the illegal instruction...
448 //This doesn't work right either! Do something else! Quick!
449 // SET32(jaguar_mainRam, 0x10, m68kPC);
455 WriteLog("\nM68K encountered an illegal instruction at %08X!!!\n\nAborting!\n", m68kPC
);
456 uint32_t topOfStack
= m68k_get_reg(NULL
, M68K_REG_A7
);
457 WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack
));
458 uint32_t address
= topOfStack
- (4 * 4 * 3);
460 for(int i
=0; i
<10; i
++)
462 WriteLog("%06X:", address
);
464 for(int j
=0; j
<4; j
++)
466 WriteLog(" %08X", JaguarReadLong(address
));
473 WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO
)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled");
477 // WriteLog("\n\n68K disasm\n\n");
478 // jaguar_dasm(0x802000, 0x50C);
489 Now here be dragons
...
490 Here is how memory ranges are defined in the CoJag driver
.
491 Note that we only have to be concerned with
3 entities read
/writing anything
:
492 The main CPU
, the GPU
, and the DSP
. Everything
else is unnecessary
. So we can keep our main memory
493 checking in jaguar
.cpp
, gpu
.cpp
and dsp
.cpp
. There should be NO checking in TOM
, JERRY
, etc
. other than
494 things that are entirely internal to those modules
. This way we should be able to get a handle on all
495 this crap which is currently scattered over Hell
's Half Acre(tm).
497 Also: We need to distinguish whether or not we need .b, .w, and .dw versions of everything, or if there
498 is a good way to collapse that shit (look below for inspiration). Current method works, but is error prone.
500 /*************************************
502 * Main CPU memory handlers
504 *************************************/
506 static ADDRESS_MAP_START( m68020_map, ADDRESS_SPACE_PROGRAM, 32 )
507 AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_BASE(&jaguar_shared_ram) AM_SHARE(1)
508 AM_RANGE(0x800000, 0x9fffff) AM_ROM AM_REGION(REGION_USER1, 0) AM_BASE(&rom_base)
509 AM_RANGE(0xa00000, 0xa1ffff) AM_RAM
510 AM_RANGE(0xa20000, 0xa21fff) AM_READWRITE(eeprom_data_r, eeprom_data_w) AM_BASE(&generic_nvram32) AM_SIZE(&generic_nvram_size)
511 AM_RANGE(0xa30000, 0xa30003) AM_WRITE(watchdog_reset32_w)
512 AM_RANGE(0xa40000, 0xa40003) AM_WRITE(eeprom_enable_w)
513 AM_RANGE(0xb70000, 0xb70003) AM_READWRITE(misc_control_r, misc_control_w)
514 AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(2)
515 AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w)
516 AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w)
517 AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_BASE(&jaguar_gpu_clut) AM_SHARE(2)
518 AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w)
519 AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w)
520 AM_RANGE(0xf03000, 0xf03fff) AM_MIRROR(0x008000) AM_RAM AM_BASE(&jaguar_gpu_ram) AM_SHARE(3)
521 AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w)
522 AM_RANGE(0xf16000, 0xf1600b) AM_READ(cojag_gun_input_r) // GPI02
523 AM_RANGE(0xf17000, 0xf17003) AM_READ(status_r) // GPI03
524 // AM_RANGE(0xf17800, 0xf17803) AM_WRITE(latch_w) // GPI04
525 AM_RANGE(0xf17c00, 0xf17c03) AM_READ(jamma_r) // GPI05
526 AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w)
527 AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w)
528 AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_BASE(&jaguar_dsp_ram) AM_SHARE(4)
531 /*************************************
533 * GPU memory handlers
535 *************************************/
537 static ADDRESS_MAP_START( gpu_map, ADDRESS_SPACE_PROGRAM, 32 )
538 AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1)
539 AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8)
540 AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9)
541 AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w)
542 AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w)
543 AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_SHARE(2)
544 AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w)
545 AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w)
546 AM_RANGE(0xf03000, 0xf03fff) AM_RAM AM_SHARE(3)
547 AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w)
550 /*************************************
552 * DSP memory handlers
554 *************************************/
556 static ADDRESS_MAP_START( dsp_map, ADDRESS_SPACE_PROGRAM, 32 )
557 AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1)
558 AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8)
559 AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9)
560 AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w)
561 AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w)
562 AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w)
563 AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_SHARE(4)
564 AM_RANGE(0xf1d000, 0xf1dfff) AM_READ(jaguar_wave_rom_r) AM_BASE(&jaguar_wave_rom)
569 //#define EXPERIMENTAL_MEMORY_HANDLING
570 // Experimental memory mappage...
571 // Dunno if this is a good approach or not, but it seems to make better
572 // sense to have all this crap in one spot intstead of scattered all over
573 // the place the way it is now.
574 #ifdef EXPERIMENTAL_MEMORY_HANDLING
576 #define NEW_TIMER_SYSTEM
579 uint8_t jaguarMainRAM[0x400000]; // 68K CPU RAM
580 uint8_t jaguarMainROM[0x600000]; // 68K CPU ROM
581 uint8_t jaguarBootROM[0x040000]; // 68K CPU BIOS ROM--uses only half of this!
582 uint8_t jaguarCDBootROM[0x040000]; // 68K CPU CD BIOS ROM
583 bool BIOSLoaded = false;
584 bool CDBIOSLoaded = false;
586 uint8_t cdRAM[0x100];
587 uint8_t tomRAM[0x4000];
588 uint8_t jerryRAM[0x10000];
589 static uint16_t eeprom_ram[64];
591 // NOTE: CD BIOS ROM is read from cartridge space @ $802000 (it's a cartridge
, after all
)
594 enum MemType
{ MM_NOP
= 0, MM_RAM
, MM_ROM
, MM_IO
};
596 // M68K Memory map/handlers
598 { 0x000000, 0x3FFFFF, MM_RAM
, jaguarMainRAM
},
599 { 0x800000, 0xDFFEFF, MM_ROM
, jaguarMainROM
},
600 // Note that this is really memory mapped I/O region...
601 // { 0xDFFF00, 0xDFFFFF, MM_RAM, cdRAM },
602 { 0xDFFF00, 0xDFFF03, MM_IO
, cdBUTCH
}, // base of Butch == interrupt control register, R/W
603 { 0xDFFF04, 0xDFFF07, MM_IO
, cdDSCNTRL
}, // DSA control register, R/W
604 { 0xDFFF0A, 0xDFFF0B, MM_IO
, cdDS_DATA
}, // DSA TX/RX data, R/W
605 { 0xDFFF10, 0xDFFF13, MM_IO
, cdI2CNTRL
}, // i2s bus control register, R/W
606 { 0xDFFF14, 0xDFFF17, MM_IO
, cdSBCNTRL
}, // CD subcode control register, R/W
607 { 0xDFFF18, 0xDFFF1B, MM_IO
, cdSUBDATA
}, // Subcode data register A
608 { 0xDFFF1C, 0xDFFF1F, MM_IO
, cdSUBDATB
}, // Subcode data register B
609 { 0xDFFF20, 0xDFFF23, MM_IO
, cdSB_TIME
}, // Subcode time and compare enable (D24)
610 { 0xDFFF24, 0xDFFF27, MM_IO
, cdFIFO_DATA
}, // i2s FIFO data
611 { 0xDFFF28, 0xDFFF2B, MM_IO
, cdI2SDAT2
}, // i2s FIFO data (old)
612 { 0xDFFF2C, 0xDFFF2F, MM_IO
, cdUNKNOWN
}, // Seems to be some sort of I2S interface
614 { 0xE00000, 0xE3FFFF, MM_ROM
, jaguarBootROM
},
616 // { 0xF00000, 0xF0FFFF, MM_IO, TOM_REGS_RW },
617 { 0xF00050, 0xF00051, MM_IO
, tomTimerPrescaler
},
618 { 0xF00052, 0xF00053, MM_IO
, tomTimerDivider
},
619 { 0xF00400, 0xF005FF, MM_RAM
, tomRAM
}, // CLUT A&B: How to link these? Write to one writes to the other...
620 { 0xF00600, 0xF007FF, MM_RAM
, tomRAM
}, // Actually, this is a good approach--just make the reads the same as well
621 //What about LBUF writes???
622 { 0xF02100, 0xF0211F, MM_IO
, GPUWriteByte
}, // GPU CONTROL
623 { 0xF02200, 0xF0229F, MM_IO
, BlitterWriteByte
}, // BLITTER
624 { 0xF03000, 0xF03FFF, MM_RAM
, GPUWriteByte
}, // GPU RAM
626 { 0xF10000, 0xF1FFFF, MM_IO
, JERRY_REGS_RW
},
630 { 0xF14001, 0xF14001, MM_IO_RO, eepromFOO }
631 { 0xF14801, 0xF14801, MM_IO_WO, eepromBAR }
632 { 0xF15001, 0xF15001, MM_IO_RW, eepromBAZ }
635 { 0xF14000, 0xF14003, MM_IO, joystickFoo }
636 0 = pad0/1 button values (4 bits each), RO(?)
637 1 = pad0/1 index value (4 bits each), WO
639 3 = NTSC/PAL, certain button states, RO
641 JOYSTICK $F14000 Read/Write
643 Read fedcba98 7654321q f-1 Signals J15 to J1
644 q Cartridge EEPROM output data
645 Write exxxxxxm 76543210 e 1 = enable J7-J0 outputs
646 0 = disable J7-J0 outputs
649 0 = Audio muted (reset state)
651 7-4 J7-J4 outputs (port 2)
652 3-0 J3-J0 outputs (port 1)
653 JOYBUTS $F14002 Read Only
655 Read xxxxxxxx rrdv3210 x don't care
658 v 1 = NTSC Video hardware
659 0 = PAL Video hardware
660 3-2 Button inputs B3 & B2 (port 2)
661 1-0 Button inputs B1 & B0 (port 1)
663 J4 J5 J6 J7 Port 2 B2 B3 J12 J13 J14 J15
664 J3 J2 J1 J0 Port 1 B0 B1 J8 J9 J10 J11
672 0 1 1 1 Row 3 C3 Option # 9 6 3
676 1 0 1 1 Row 2 C2 C 0 8 5 2
678 1 1 0 1 Row 1 C1 B * 7 4 1
679 1 1 1 0 Row 0 Pause A Up Down Left Right
682 0 bit read in any position means that button is pressed.
683 C3 = C2 = 1 means std. Jag. cntrlr. or nothing attached.
687 void WriteByte(uint32_t address
, uint8_t byte
, uint32_t who
/*=UNKNOWN*/)
689 // Not sure, but I think the system only has 24 address bits...
690 address
&= 0x00FFFFFF;
692 // RAM ($000000 - $3FFFFF) 4M
693 if (address
<= 0x3FFFFF)
694 jaguarMainRAM
[address
] = byte
;
695 // hole ($400000 - $7FFFFF) 4M
696 else if (address
<= 0x7FFFFF)
698 // GAME ROM ($800000 - $DFFEFF) 6M - 256 bytes
699 else if (address
<= 0xDFFEFF)
701 // CDROM ($DFFF00 - $DFFFFF) 256 bytes
702 else if (address
<= 0xDFFFFF)
704 cdRAM
[address
& 0xFF] = byte
;
706 if ((address
& 0xFF) < 12 * 4)
707 WriteLog("[%s] ", BReg
[(address
& 0xFF) / 4]);
708 WriteLog("CDROM: %s writing byte $%02X at $%08X [68K PC=$%08X]\n", whoName
[who
], data
, offset
, m68k_get_reg(NULL
, M68K_REG_PC
));
711 // BIOS ROM ($E00000 - $E3FFFF) 256K
712 else if (address
<= 0xE3FFFF)
714 // hole ($E40000 - $EFFFFF) 768K
715 else if (address
<= 0xEFFFFF)
717 // TOM ($F00000 - $F0FFFF) 64K
718 else if (address
<= 0xF0FFFF)
721 if (address
== 0xF00050)
723 tomTimerPrescaler
= (tomTimerPrescaler
& 0x00FF) | ((uint16_t)byte
<< 8);
727 else if (address
== 0xF00051)
729 tomTimerPrescaler
= (tomTimerPrescaler
& 0xFF00) | byte
;
733 else if (address
== 0xF00052)
735 tomTimerDivider
= (tomTimerDivider
& 0x00FF) | ((uint16_t)byte
<< 8);
739 else if (address
== 0xF00053)
741 tomTimerDivider
= (tomTimerDivider
& 0xFF00) | byte
;
745 else if (address
>= 0xF00400 && address
<= 0xF007FF) // CLUT (A & B)
747 // Writing to one CLUT writes to the other
748 address
&= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF)
749 tomRAM
[address
] = tomRAM
[address
+ 0x200] = byte
;
752 //What about LBUF writes???
753 else if ((address
>= 0xF02100) && (address
<= 0xF0211F)) // GPU CONTROL
755 GPUWriteByte(address
, byte
, who
);
758 else if ((address
>= 0xF02200) && (address
<= 0xF0229F)) // BLITTER
760 BlitterWriteByte(address
, byte
, who
);
763 else if ((address
>= 0xF03000) && (address
<= 0xF03FFF)) // GPU RAM
765 GPUWriteByte(address
, byte
, who
);
769 tomRAM
[address
& 0x3FFF] = byte
;
771 // JERRY ($F10000 - $F1FFFF) 64K
772 else if (address
<= 0xF1FFFF)
776 WriteLog("jerry: writing byte %.2x at 0x%.6x\n", byte
, address
);
778 if ((address
>= DSP_CONTROL_RAM_BASE
) && (address
< DSP_CONTROL_RAM_BASE
+0x20))
780 DSPWriteByte(address
, byte
, who
);
783 else if ((address
>= DSP_WORK_RAM_BASE
) && (address
< DSP_WORK_RAM_BASE
+0x2000))
785 DSPWriteByte(address
, byte
, who
);
788 // SCLK ($F1A150--8 bits wide)
789 //NOTE: This should be taken care of in DAC...
790 else if ((address
>= 0xF1A152) && (address
<= 0xF1A153))
792 // WriteLog("JERRY: Writing %02X to SCLK...\n", data);
793 if ((address
& 0x03) == 2)
794 JERRYI2SInterruptDivide
= (JERRYI2SInterruptDivide
& 0x00FF) | ((uint32_t)byte
<< 8);
796 JERRYI2SInterruptDivide
= (JERRYI2SInterruptDivide
& 0xFF00) | (uint32_t)byte
;
798 JERRYI2SInterruptTimer
= -1;
799 #ifndef NEW_TIMER_SYSTEM
802 RemoveCallback(JERRYI2SCallback
);
807 // LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...)
808 else if (address
>= 0xF1A148 && address
<= 0xF1A157)
810 DACWriteByte(address
, byte
, who
);
813 else if (address
>= 0xF10000 && address
<= 0xF10007)
815 #ifndef NEW_TIMER_SYSTEM
816 switch (address
& 0x07)
819 JERRYPIT1Prescaler
= (JERRYPIT1Prescaler
& 0x00FF) | (byte
<< 8);
823 JERRYPIT1Prescaler
= (JERRYPIT1Prescaler
& 0xFF00) | byte
;
827 JERRYPIT1Divider
= (JERRYPIT1Divider
& 0x00FF) | (byte
<< 8);
831 JERRYPIT1Divider
= (JERRYPIT1Divider
& 0xFF00) | byte
;
835 JERRYPIT2Prescaler
= (JERRYPIT2Prescaler
& 0x00FF) | (byte
<< 8);
839 JERRYPIT2Prescaler
= (JERRYPIT2Prescaler
& 0xFF00) | byte
;
843 JERRYPIT2Divider
= (JERRYPIT2Divider
& 0x00FF) | (byte
<< 8);
847 JERRYPIT2Divider
= (JERRYPIT2Divider
& 0xFF00) | byte
;
851 WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", address
);
855 /* else if ((offset >= 0xF10010) && (offset <= 0xF10015))
857 clock_byte_write(offset, byte);
860 // JERRY -> 68K interrupt enables/latches (need to be handled!)
861 else if (address
>= 0xF10020 && address
<= 0xF10023)
863 WriteLog("JERRY: (68K int en/lat - Unhandled!) Tried to write $%02X to $%08X!\n", byte
, address
);
865 /* else if ((offset >= 0xF17C00) && (offset <= 0xF17C01))
867 anajoy_byte_write(offset, byte);
870 else if ((address
>= 0xF14000) && (address
<= 0xF14003))
872 JoystickWriteByte(address
, byte
);
873 EepromWriteByte(address
, byte
);
876 else if ((address
>= 0xF14004) && (address
<= 0xF1A0FF))
878 EepromWriteByte(address
, byte
);
881 //Need to protect write attempts to Wavetable ROM (F1D000-FFF)
882 else if (address
>= 0xF1D000 && address
<= 0xF1DFFF)
885 jerryRAM
[address
& 0xFFFF] = byte
;
887 // hole ($F20000 - $FFFFFF) 1M - 128K
893 void WriteWord(uint32_t adddress
, uint16_t word
)
898 void WriteDWord(uint32_t adddress
, uint32_t dword
)
903 uint8_t ReadByte(uint32_t adddress
)
908 uint16_t ReadWord(uint32_t adddress
)
913 uint32_t ReadDWord(uint32_t adddress
)
919 void ShowM68KContext(void)
921 printf("\t68K PC=%06X\n", m68k_get_reg(NULL
, M68K_REG_PC
));
923 for(int i
=M68K_REG_D0
; i
<=M68K_REG_D7
; i
++)
925 printf("D%i = %08X ", i
-M68K_REG_D0
, m68k_get_reg(NULL
, (m68k_register_t
)i
));
927 if (i
== M68K_REG_D3
|| i
== M68K_REG_D7
)
931 for(int i
=M68K_REG_A0
; i
<=M68K_REG_A7
; i
++)
933 printf("A%i = %08X ", i
-M68K_REG_A0
, m68k_get_reg(NULL
, (m68k_register_t
)i
));
935 if (i
== M68K_REG_A3
|| i
== M68K_REG_A7
)
939 uint32_t currpc
= m68k_get_reg(NULL
, M68K_REG_PC
);
940 uint32_t disPC
= currpc
- 30;
945 uint32_t oldpc
= disPC
;
946 disPC
+= m68k_disassemble(buffer
, disPC
, 0, 1);
947 printf("%s%08X: %s\n", (oldpc
== currpc
? ">" : " "), oldpc
, buffer
);
949 while (disPC
< (currpc
+ 10));
954 // Custom UAE 68000 read/write/IRQ functions
961 IPL Name Vector Control
962 ---------+---------------+---------------+---------------
963 2 VBLANK IRQ $
100 INT1 bit
#0
964 2 GPU IRQ $
100 INT1 bit
#1
965 2 HBLANK IRQ $
100 INT1 bit
#2
966 2 Timer IRQ $
100 INT1 bit
#3
968 Note
: Both timer
interrupts (JPIT
&& PIT
) are on the same INT1 bit
.
969 and are therefore indistinguishable
.
971 A typical way to install a LEVEL2 handler
for the
68000 would be
972 something like
this, you gotta supply
"last_line" and "handler".
973 Note that the interrupt is
auto vectored thru $
100 (not $
68)
981 IRQS_HANDLED
=$
909 ;; VBLANK
and TIMER
983 move
.w
#$2700,sr ;; no IRQs please
984 move
.l
#handler,V_AUTO ;; install our routine
986 move
.w
#last_line,VI ;; scanline where IRQ should occur
987 ;; should be
'odd' BTW
988 move
.w
#IRQS_HANDLE&$FF,INT1 ;; enable VBLANK + TIMER
989 move
.w
#$2100,sr ;; enable IRQs on the 68K
1007 move
.w
#IRQS_HANDLED,INT1 ; clear latch, keep IRQ alive
1008 move
.w
#0,INT2 ; let GPU run again
1012 As you can see
, if you have multiple INT1 interrupts coming in
,
1013 you need to check the lower byte of INT1
, to see which interrupt
1016 int irq_ack_handler(int level
)
1018 #ifdef CPU_DEBUG_TRACING
1019 if (startM68KTracing
)
1021 WriteLog("irq_ack_handler: M68K PC=%06X\n", m68k_get_reg(NULL
, M68K_REG_PC
));
1025 // Tracing the IPL lines on the Jaguar schematic yields the following:
1026 // IPL1 is connected to INTL on TOM (OUT to 68K)
1027 // IPL0-2 are also tied to Vcc via 4.7K resistors!
1028 // (DINT on TOM goes into DINT on JERRY (IN Tom from Jerry))
1029 // There doesn't seem to be any other path to IPL0 or 2 on the schematic,
1030 // which means that *all* IRQs to the 68K are routed thru TOM at level 2.
1031 // Which means they're all maskable.
1033 // The GPU/DSP/etc are probably *not* issuing an NMI, but it seems to work
1035 // They aren't, and this causes problems with a, err, specific ROM. :-D
1039 m68k_set_irq(0); // Clear the IRQ (NOTE: Without this, the BIOS fails)...
1040 return 64; // Set user interrupt #0
1043 return M68K_INT_ACK_AUTOVECTOR
;
1048 void M68K_Debughalt(void)
1055 // M68000 breakpoints initialisations
1056 void m68k_brk_init(void)
1063 // Reset the M68000 breakpoints structures
1064 void m68k_brk_reset(void)
1066 // Reset the breakpoints
1073 // Delete a M68000 breakpoint (starting from 1)
1074 void m68k_brk_del(unsigned int NumBrk
)
1076 // Remove the breakpoint
1077 memset((void *)(brkInfo
+ (NumBrk
- 1)), 0, sizeof(S_BrkInfo
));
1081 // Add a M68000 breakpoint
1082 // return true if breakpoint has been added, and false if breakpoint already exists
1083 unsigned int m68k_brk_add(void *PtrInfo
)
1085 S_BrkInfo
*Ptr
= NULL
;
1087 // Check if breakpoint already exists
1088 for (size_t i
= 0; i
< brkNbr
; i
++)
1090 if (brkInfo
[i
].Used
)
1092 if (brkInfo
[i
].Adr
== ((S_BrkInfo
*)PtrInfo
)->Adr
)
1099 // Look for an available breakpoint
1100 for (size_t i
= 0; i
< brkNbr
, Ptr
; i
++)
1102 if (!brkInfo
[i
].Used
)
1111 brkInfo
= (S_BrkInfo
*)realloc(brkInfo
, (++brkNbr
* sizeof(S_BrkInfo
)));
1112 Ptr
= &brkInfo
[brkNbr
- 1];
1115 // Transfert the breakpoint information and init the activities
1116 memcpy((void *)Ptr
, PtrInfo
, sizeof(S_BrkInfo
));
1118 return (Ptr
->Active
= Ptr
->Used
= true);
1122 // Check if breakpoint has been reached
1123 unsigned int m68k_brk_check(unsigned int adr
)
1125 // Check if BPM has been reached
1126 if ((adr
== bpmAddress1
) && bpmActive
)
1133 // Check user breakpoints
1134 for (size_t i
= 0; i
< brkNbr
; i
++)
1136 if (brkInfo
[i
].Used
&& brkInfo
[i
].Active
)
1138 if (brkInfo
[i
].Adr
== adr
)
1140 brkInfo
[i
].HitCounts
++;
1147 // No breakpoint found
1152 // Disable the M68000 breakpoints
1153 void m68k_brk_disable(void)
1155 // reset active for the breakpoints
1156 for (size_t i
= 0; i
< brkNbr
; i
++)
1158 brkInfo
[i
].Active
= 0;
1163 // Reset the M68000 breakpoints
1164 void m68k_brk_hitcounts_reset(void)
1166 // reset hit counts for the breakpoints
1167 for (size_t i
= 0; i
< brkNbr
; i
++)
1169 brkInfo
[i
].HitCounts
= 0;
1174 // Close the M68000 breakpoints structures
1175 void m68k_brk_close(void)
1181 // Read 1 byte from address
1182 // Check if address reaches a breakpoint
1183 unsigned int m68k_read_memory_8(unsigned int address
)
1185 #ifdef ALPINE_FUNCTIONS
1186 // Check if breakpoint on memory is active, and deal with it
1187 if (!startM68KTracing
&& m68k_brk_check(address
))
1193 // Musashi does this automagically for you, UAE core does not :-P
1194 address
&= 0x00FFFFFF;
1195 #ifdef CPU_DEBUG_MEMORY
1196 // Note that the Jaguar only has 2M of RAM, not 4!
1197 if ((address
>= 0x000000) && (address
<= 0x1FFFFF))
1200 readMem
[address
] = 1;
1203 //WriteLog("[RM8] Addr: %08X\n", address);
1204 //; So, it seems that it stores the returned DWORD at $51136 and $FB074.
1205 /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076
1206 || address == 0x1AF05E)
1207 WriteLog("[RM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, jaguar_mainRam[address]);//*/
1209 unsigned int retVal
= 0;
1211 // Note that the Jaguar only has 2M of RAM, not 4!
1212 if ((address
>= 0x000000) && (address
<= (vjs
.DRAM_size
- 1)))
1214 retVal
= jaguarMainRAM
[address
];
1216 // else if ((address >= 0x800000) && (address <= 0xDFFFFF))
1219 if ((address
>= 0x800000) && (address
<= 0xDFFEFF))
1221 retVal
= jaguarMainROM
[address
- 0x800000];
1225 if ((address
>= 0xE00000) && (address
<= 0xE3FFFF))
1227 // retVal = jaguarBootROM[address - 0xE00000];
1228 // retVal = jaguarDevBootROM1[address - 0xE00000];
1229 retVal
= jagMemSpace
[address
];
1233 if ((address
>= 0xDFFF00) && (address
<= 0xDFFFFF))
1235 retVal
= CDROMReadByte(address
);
1239 if ((address
>= 0xF00000) && (address
<= 0xF0FFFF))
1241 retVal
= TOMReadByte(address
, M68K
);
1245 if ((address
>= 0xF10000) && (address
<= 0xF1FFFF))
1247 retVal
= JERRYReadByte(address
, M68K
);
1251 retVal
= jaguar_unknown_readbyte(address
, M68K
);
1259 //if (address >= 0x2800 && address <= 0x281F)
1260 // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC));
1261 //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16)
1262 // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC));
1265 return MMURead8(address
, M68K
);
1271 void gpu_dump_disassembly(void);
1272 void gpu_dump_registers(void);
1275 unsigned int m68k_read_memory_16(unsigned int address
)
1277 #ifdef ALPINE_FUNCTIONS
1278 // Check if breakpoint on memory is active, and deal with it
1279 if (!startM68KTracing
&& m68k_brk_check(address
))
1285 // Musashi does this automagically for you, UAE core does not :-P
1286 address
&= 0x00FFFFFF;
1287 #ifdef CPU_DEBUG_MEMORY
1288 /* if ((address >= 0x000000) && (address <= 0x3FFFFE))
1291 readMem[address] = 1, readMem[address + 1] = 1;
1293 /* if (effect_start && (address >= 0x8064FC && address <= 0x806501))
1295 return 0x4E71; // NOP
1297 if (effect_start2 && (address >= 0x806502 && address <= 0x806507))
1299 return 0x4E71; // NOP
1301 if (effect_start3 && (address >= 0x806512 && address <= 0x806517))
1303 return 0x4E71; // NOP
1305 if (effect_start4 && (address >= 0x806524 && address <= 0x806527))
1307 return 0x4E71; // NOP
1309 if (effect_start5 && (address >= 0x80653E && address <= 0x806543)) //Collision detection!
1311 return 0x4E71; // NOP
1313 if (effect_start6 && (address >= 0x806544 && address <= 0x806547))
1315 return 0x4E71; // NOP
1318 //WriteLog("[RM16] Addr: %08X\n", address);
1319 /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005FBA)
1320 // for(int i=0; i<10000; i++)
1321 WriteLog("[M68K] In routine #6!\n");//*/
1322 //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00006696) // GPU Program #4
1323 //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005B3C) // GPU Program #2
1324 /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005BA8) // GPU Program #3
1326 WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address));
1327 gpu_dump_registers();
1328 gpu_dump_disassembly();
1329 // for(int i=0; i<10000; i++)
1330 // WriteLog("[M68K] About to run GPU!\n");
1332 //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
1333 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x00006696 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x000066A8)
1335 if (address == 0x000066A0)
1337 gpu_dump_registers();
1338 gpu_dump_disassembly();
1340 for(int i=0; i<10000; i++)
1341 WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address));
1343 //; So, it seems that it stores the returned DWORD at $51136 and $FB074.
1344 /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076
1345 || address == 0x1AF05E)
1346 WriteLog("[RM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, GET16(jaguar_mainRam, address));//*/
1348 unsigned int retVal
= 0;
1350 // Note that the Jaguar only has 2M of RAM, not 4!
1351 if ((address
>= 0x000000) && (address
<= (vjs
.DRAM_size
- 2)))
1353 // retVal = (jaguar_mainRam[address] << 8) | jaguar_mainRam[address+1];
1354 retVal
= GET16(jaguarMainRAM
, address
);
1356 // else if ((address >= 0x800000) && (address <= 0xDFFFFE))
1359 if ((address
>= 0x800000) && (address
<= 0xDFFEFE))
1361 // Memory Track reading...
1362 if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32
== 0xFDF37F47))
1364 retVal
= MTReadWord(address
);
1368 retVal
= (jaguarMainROM
[address
- 0x800000] << 8) | jaguarMainROM
[address
- 0x800000 + 1];
1373 if ((address
>= 0xE00000) && (address
<= 0xE3FFFE))
1375 // retVal = (jaguarBootROM[address - 0xE00000] << 8) | jaguarBootROM[address - 0xE00000 + 1];
1376 // retVal = (jaguarDevBootROM1[address - 0xE00000] << 8) | jaguarDevBootROM1[address - 0xE00000 + 1];
1377 retVal
= (jagMemSpace
[address
] << 8) | jagMemSpace
[address
+ 1];
1381 if ((address
>= 0xDFFF00) && (address
<= 0xDFFFFE))
1383 retVal
= CDROMReadWord(address
, M68K
);
1387 if ((address
>= 0xF00000) && (address
<= 0xF0FFFE))
1389 retVal
= TOMReadWord(address
, M68K
);
1393 if ((address
>= 0xF10000) && (address
<= 0xF1FFFE))
1395 retVal
= JERRYReadWord(address
, M68K
);
1399 retVal
= jaguar_unknown_readword(address
, M68K
);
1407 //if (address >= 0xF1B000 && address <= 0xF1CFFF)
1408 // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC));
1409 //if (address >= 0x2800 && address <= 0x281F)
1410 // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC));
1411 //$8B3AE -> Transferred from $F1C010
1412 //$8B5E4 -> Only +1 read at $808AA
1413 //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16)
1414 // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC));
1417 return MMURead16(address
, M68K
);
1422 // Alert message in case of exception vector request
1423 bool m68k_read_exception_vector(unsigned int address
, char *text
)
1429 msg
.sprintf("68000 exception\n%s at $%06x", text
, pcQueue
[pcQPtr
? (pcQPtr
- 1) : 0x3FF]);
1431 msg
.sprintf("68000 exception\n$%06x: %s", pcQueue
[pcQPtr
? (pcQPtr
- 1) : 0x3FF], text
);
1433 msgBox
.setText(msg
);
1434 msgBox
.setStandardButtons(QMessageBox::Abort
);
1435 msgBox
.setDefaultButton(QMessageBox::Abort
);
1437 return M68KDebugHalt();
1441 // Read 4 bytes from memory
1442 unsigned int m68k_read_memory_32(unsigned int address
)
1444 #ifdef ALPINE_FUNCTIONS
1445 // Check if breakpoint on memory is active, and deal with it
1446 if (!startM68KTracing
&& m68k_brk_check(address
))
1452 // Musashi does this automagically for you, UAE core does not :-P
1453 address
&= 0x00FFFFFF;
1454 //; So, it seems that it stores the returned DWORD at $51136 and $FB074.
1455 /* if (address == 0x51136 || address == 0xFB074 || address == 0x1AF05E)
1456 WriteLog("[RM32 PC=%08X] Addr: %08X, val: %08X\n", m68k_get_reg(NULL, M68K_REG_PC), address, (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2));//*/
1458 //WriteLog("--> [RM32]\n");
1460 //uint32_t retVal = 0;
1462 // check exception vectors access
1463 if ((address
>= 0x8) && (address
<= 0x7c))
1468 m68k_read_exception_vector(address
, "Address error");
1472 m68k_read_exception_vector(address
, "Illegal instruction");
1476 m68k_read_exception_vector(address
, "Unimplemented instruction");
1480 m68k_read_exception_vector(address
, "Exception not referenced");
1486 // check ROM or Memory Track access
1487 if ((address
>= 0x800000) && (address
<= 0xDFFEFE))
1489 // Memory Track reading...
1490 if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32
== 0xFDF37F47))
1492 return MTReadLong(address
);
1496 return GET32(jaguarMainROM
, address
- 0x800000);
1501 // return value from memory
1502 return (m68k_read_memory_16(address
) << 16) | m68k_read_memory_16(address
+ 2);
1504 return MMURead32(address
, M68K
);
1509 // Alert message in case of writing to unknown memory location
1510 bool m68k_write_unknown_alert(unsigned int address
, char *bits
, unsigned int value
)
1515 msg
.sprintf("$%06x: Writing at this unknown memory location $%06x with a (%s bits) value of $%0x", pcQueue
[pcQPtr
? (pcQPtr
- 1) : 0x3FF], address
, bits
, value
);
1516 msgBox
.setText(msg
);
1517 msgBox
.setStandardButtons(QMessageBox::Abort
);
1518 msgBox
.setDefaultButton(QMessageBox::Abort
);
1520 return M68KDebugHalt();
1524 // Alert message in case of writing to cartridge/ROM memory location
1525 bool m68k_write_cartridge_alert(unsigned int address
, char *bits
, unsigned int value
)
1527 if (!M68KDebugHaltStatus())
1532 msg
.sprintf("$%06x: Writing at this ROM cartridge location $%06x with a (%s bits) value of $%0x", pcQueue
[pcQPtr
? (pcQPtr
- 1) : 0x3FF], address
, bits
, value
);
1533 msgBox
.setText(msg
);
1535 msgBox
.setInformativeText("Do you want to continue?");
1536 msgBox
.setStandardButtons(QMessageBox::Yes
| QMessageBox::No
);
1537 msgBox
.setDefaultButton(QMessageBox::No
);
1539 int retVal
= msgBox
.exec();
1541 if (retVal
== QMessageBox::Yes
)
1547 return M68KDebugHalt();
1557 // Check memory write location
1558 // BPM & cartridge/ROM detections
1559 bool m68k_write_memory_check(unsigned int address
, char *bits
, unsigned int value
)
1561 unsigned int address1
;
1563 #ifdef ALPINE_FUNCTIONS
1564 // Check if breakpoint on memory is active, and deal with it
1565 if (!M68KDebugHaltStatus() && bpmActive
&& (address
== bpmAddress1
))
1567 return M68KDebugHalt();
1572 // Rom writing authorisation detection
1573 if (!vjs
.allowWritesToROM
)
1575 // Calcul the end address
1576 if (strstr(bits
, "32"))
1578 address1
= address
+ 3;
1582 if (strstr(bits
, "16"))
1584 address1
= address
+ 1;
1592 // Rom writing detection
1593 if ((address
>= 0x800000) && (address1
< 0xDFFF00))
1595 return m68k_write_cartridge_alert(address
, bits
, value
);
1604 // Memory write location on 8 bits
1605 void m68k_write_memory_8(unsigned int address
, unsigned int value
)
1607 // Check memory write location on 8 bits
1608 if (!m68k_write_memory_check(address
, "8", value
))
1610 // Musashi does this automagically for you, UAE core does not :-P
1611 //address &= 0x00FFFFFF;
1612 #ifdef CPU_DEBUG_MEMORY
1613 // Note that the Jaguar only has 2M of RAM, not 4!
1614 if ((address
>= 0x000000) && (address
<= 0x1FFFFF))
1618 if (value
> writeMemMax
[address
])
1619 writeMemMax
[address
] = value
;
1620 if (value
< writeMemMin
[address
])
1621 writeMemMin
[address
] = value
;
1625 /*if (address == 0x4E00)
1626 WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/
1627 //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F))
1628 // WriteLog("M68K: Writing %02X at %08X\n", value, address);
1629 //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
1631 if (address >= 0x18FA70 && address < (0x18FA70 + 8000))
1632 WriteLog("M68K: Byte %02X written at %08X by 68K\n", value, address);//*/
1634 /*if (address >= 0x53D0 && address <= 0x53FF)
1635 printf("M68K: Writing byte $%02X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/
1636 //Testing AvP on UAE core...
1637 //000075A0: FFFFF80E B6320220 (BITMAP)
1638 /*if (address == 0x75A0 && value == 0xFF)
1639 printf("M68K: (8) Tripwire hit...\n");//*/
1642 // Note that the Jaguar only has 2M of RAM, not 4!
1643 if ((address
>= 0x000000) && (address
<= (vjs
.DRAM_size
- 1)))
1645 jaguarMainRAM
[address
] = value
;
1649 if ((address
>= 0xDFFF00) && (address
<= 0xDFFFFF))
1651 CDROMWriteByte(address
, value
, M68K
);
1655 if ((address
>= 0xF00000) && (address
<= 0xF0FFFF))
1657 TOMWriteByte(address
, value
, M68K
);
1661 if ((address
>= 0xF10000) && (address
<= 0xF1FFFF))
1663 JERRYWriteByte(address
, value
, M68K
);
1667 if ((address
>= 0x800000) && (address
<= 0xDFFEFF))
1669 jagMemSpace
[address
] = (uint8_t)value
;
1673 jaguar_unknown_writebyte(address
, value
, M68K
);
1680 MMUWrite8(address
, value
, M68K
);
1686 // Memory write location on 16 bits
1687 void m68k_write_memory_16(unsigned int address
, unsigned int value
)
1689 // Check memory write location on 16 bits
1690 if (!m68k_write_memory_check(address
, "16", value
))
1692 // Musashi does this automagically for you, UAE core does not :-P
1693 //address &= 0x00FFFFFF;
1694 #ifdef CPU_DEBUG_MEMORY
1695 // Note that the Jaguar only has 2M of RAM, not 4!
1696 if ((address
>= 0x000000) && (address
<= 0x1FFFFE))
1700 uint8_t hi
= value
>> 8, lo
= value
& 0xFF;
1702 if (hi
> writeMemMax
[address
])
1703 writeMemMax
[address
] = hi
;
1704 if (hi
< writeMemMin
[address
])
1705 writeMemMin
[address
] = hi
;
1707 if (lo
> writeMemMax
[address
+ 1])
1708 writeMemMax
[address
+ 1] = lo
;
1709 if (lo
< writeMemMin
[address
+ 1])
1710 writeMemMin
[address
+ 1] = lo
;
1714 /*if (address == 0x4E00)
1715 WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/
1716 //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F))
1717 // WriteLog("M68K: Writing %04X at %08X\n", value, address);
1718 //WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
1719 //if (address >= 0xF02200 && address <= 0xF0229F)
1720 // WriteLog("M68K: Writing to blitter --> %04X at %08X\n", value, address);
1721 //if (address >= 0x0E75D0 && address <= 0x0E75E7)
1722 // WriteLog("M68K: Writing %04X at %08X, M68K PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));
1723 /*extern uint32_t totalFrames;
1724 if (address == 0xF02114)
1725 WriteLog("M68K: Writing to GPU_CTRL (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC));
1726 if (address == 0xF02110)
1727 WriteLog("M68K: Writing to GPU_PC (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC));//*/
1728 //if (address >= 0xF03B00 && address <= 0xF03DFF)
1729 // WriteLog("M68K: Writing %04X to %08X...\n", value, address);
1731 /*if (address == 0x0100)//64*4)
1732 WriteLog("M68K: Wrote word to VI vector value %04X...\n", value);//*/
1734 if (address >= 0x18FA70 && address < (0x18FA70 + 8000))
1735 WriteLog("M68K: Word %04X written at %08X by 68K\n", value, address);//*/
1736 /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076
1737 || address == 0x1AF05E)
1738 WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/
1740 /*if (address >= 0x53D0 && address <= 0x53FF)
1741 printf("M68K: Writing word $%04X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/
1742 //Testing AvP on UAE core...
1743 //000075A0: FFFFF80E B6320220 (BITMAP)
1744 /*if (address == 0x75A0 && value == 0xFFFF)
1746 printf("\nM68K: (16) Tripwire hit...\n");
1751 // Note that the Jaguar only has 2M of RAM, not 4!
1752 if ((address
>= 0x000000) && (address
<= (vjs
.DRAM_size
- 2)))
1754 /* jaguar_mainRam[address] = value >> 8;
1755 jaguar_mainRam[address + 1] = value & 0xFF;*/
1756 SET16(jaguarMainRAM
, address
, value
);
1760 // Memory Track device writes....
1761 if ((address
>= 0x800000) && (address
<= 0x87FFFE))
1763 if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32
== 0xFDF37F47))
1765 MTWriteWord(address
, value
);
1770 if ((address
>= 0xDFFF00) && (address
<= 0xDFFFFE))
1772 CDROMWriteWord(address
, value
, M68K
);
1776 if ((address
>= 0xF00000) && (address
<= 0xF0FFFE))
1778 TOMWriteWord(address
, value
, M68K
);
1782 if ((address
>= 0xF10000) && (address
<= 0xF1FFFE))
1784 JERRYWriteWord(address
, value
, M68K
);
1788 if ((address
>= 0x800000) && (address
<= 0xDFFEFE))
1790 SET16(jagMemSpace
, address
, value
);
1794 jaguar_unknown_writeword(address
, value
, M68K
);
1795 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
1796 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
));
1804 MMUWrite16(address
, value
, M68K
);
1810 // Memory write location on 32 bits
1811 void m68k_write_memory_32(unsigned int address
, unsigned int value
)
1813 // Check memory write location on 32 bits
1814 if (!m68k_write_memory_check(address
, "32", value
))
1816 // Musashi does this automagically for you, UAE core does not :-P
1817 //address &= 0x00FFFFFF;
1818 /*if (address == 0x4E00)
1819 WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/
1820 //WriteLog("--> [WM32]\n");
1821 /*if (address == 0x0100)//64*4)
1822 WriteLog("M68K: Wrote dword to VI vector value %08X...\n", value);//*/
1823 /*if (address >= 0xF03214 && address < 0xF0321F)
1824 WriteLog("M68K: Writing DWORD (%08X) to GPU RAM (%08X)...\n", value, address);//*/
1825 //M68K: Writing DWORD (88E30047) to GPU RAM (00F03214)...
1826 /*extern bool doGPUDis;
1827 if (address == 0xF03214 && value == 0x88E30047)
1829 doGPUDis = true;//*/
1830 /* if (address == 0x51136 || address == 0xFB074)
1831 WriteLog("[WM32 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/
1832 //Testing AvP on UAE core...
1833 //000075A0: FFFFF80E B6320220 (BITMAP)
1834 /*if (address == 0x75A0 && (value & 0xFFFF0000) == 0xFFFF0000)
1836 printf("\nM68K: (32) Tripwire hit...\n");
1841 m68k_write_memory_16(address
, value
>> 16);
1842 m68k_write_memory_16(address
+ 2, value
& 0xFFFF);
1844 MMUWrite32(address
, value
, M68K
);
1850 uint32_t JaguarGetHandler(uint32_t i
)
1852 return JaguarReadLong(i
* 4);
1856 bool JaguarInterruptHandlerIsValid(uint32_t i
) // Debug use only...
1858 uint32_t handler
= JaguarGetHandler(i
);
1859 return (handler
&& (handler
!= 0xFFFFFFFF) ? true : false);
1863 void M68K_show_context(void)
1865 WriteLog("68K PC=%06X\n", m68k_get_reg(NULL
, M68K_REG_PC
));
1867 for(int i
=M68K_REG_D0
; i
<=M68K_REG_D7
; i
++)
1869 WriteLog("D%i = %08X ", i
-M68K_REG_D0
, m68k_get_reg(NULL
, (m68k_register_t
)i
));
1871 if (i
== M68K_REG_D3
|| i
== M68K_REG_D7
)
1875 for(int i
=M68K_REG_A0
; i
<=M68K_REG_A7
; i
++)
1877 WriteLog("A%i = %08X ", i
-M68K_REG_A0
, m68k_get_reg(NULL
, (m68k_register_t
)i
));
1879 if (i
== M68K_REG_A3
|| i
== M68K_REG_A7
)
1883 WriteLog("68K disasm\n");
1884 // jaguar_dasm(s68000readPC()-0x1000,0x20000);
1885 JaguarDasm(m68k_get_reg(NULL
, M68K_REG_PC
) - 0x80, 0x200);
1886 // jaguar_dasm(0x5000, 0x14414);
1888 // WriteLog("\n.......[Cart start]...........\n\n");
1889 // jaguar_dasm(0x192000, 0x1000);//0x200);
1891 WriteLog("..................\n");
1893 if (TOMIRQEnabled(IRQ_VIDEO
))
1895 WriteLog("video int: enabled\n");
1896 JaguarDasm(JaguarGetHandler(64), 0x200);
1899 WriteLog("video int: disabled\n");
1901 WriteLog("..................\n");
1903 for(int i
=0; i
<256; i
++)
1905 WriteLog("handler %03i at ", i
);//$%08X\n", i, (unsigned int)JaguarGetHandler(i));
1906 uint32_t address
= (uint32_t)JaguarGetHandler(i
);
1909 WriteLog(".........\n");
1911 WriteLog("$%08X\n", address
);
1917 // Unknown read/write byte/word routines
1920 // It's hard to believe that developers would be sloppy with their memory
1921 // writes, yet in some cases the developers screwed up royal. E.g., Club Drive
1922 // has the following code:
1924 // 807EC4: movea.l #$f1b000, A1
1925 // 807ECA: movea.l #$8129e0, A0
1926 // 807ED0: move.l A0, D0
1927 // 807ED2: move.l #$f1bb94, D1
1928 // 807ED8: sub.l D0, D1
1929 // 807EDA: lsr.l #2, D1
1930 // 807EDC: move.l (A0)+, (A1)+
1931 // 807EDE: dbra D1, 807edc
1933 // The problem is at $807ED0--instead of putting A0 into D0, they really meant
1934 // to put A1 in. This mistake causes it to try and overwrite approximately
1935 // $700000 worth of address space! (That is, unless the 68K causes a bus
1938 void jaguar_unknown_writebyte(unsigned address
, unsigned data
, uint32_t who
/*=UNKNOWN*/)
1940 m68k_write_unknown_alert(address
, "8", data
);
1941 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
1942 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
));
1944 #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS
1945 // extern bool finished;
1947 // extern bool doDSPDis;
1954 void jaguar_unknown_writeword(unsigned address
, unsigned data
, uint32_t who
/*=UNKNOWN*/)
1956 m68k_write_unknown_alert(address
, "16", data
);
1957 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
1958 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
));
1960 #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS
1961 // extern bool finished;
1963 // extern bool doDSPDis;
1970 unsigned jaguar_unknown_readbyte(unsigned address
, uint32_t who
/*=UNKNOWN*/)
1972 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
1973 WriteLog("Jaguar: Unknown byte read at %08X by %s (M68K PC=%06X)\n", address
, whoName
[who
], m68k_get_reg(NULL
, M68K_REG_PC
));
1975 #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS
1976 // extern bool finished;
1978 // extern bool doDSPDis;
1986 unsigned jaguar_unknown_readword(unsigned address
, uint32_t who
/*=UNKNOWN*/)
1988 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
1989 WriteLog("Jaguar: Unknown word read at %08X by %s (M68K PC=%06X)\n", address
, whoName
[who
], m68k_get_reg(NULL
, M68K_REG_PC
));
1991 #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS
1992 // extern bool finished;
1994 // extern bool doDSPDis;
2003 // Disassemble M68K instructions at the given offset
2006 unsigned int m68k_read_disassembler_8(unsigned int address
)
2008 return m68k_read_memory_8(address
);
2012 unsigned int m68k_read_disassembler_16(unsigned int address
)
2014 return m68k_read_memory_16(address
);
2018 unsigned int m68k_read_disassembler_32(unsigned int address
)
2020 return m68k_read_memory_32(address
);
2024 void JaguarDasm(uint32_t offset
, uint32_t qt
)
2027 static char buffer
[2048];//, mem[64];
2028 int pc
= offset
, oldpc
;
2030 for(uint32_t i
=0; i
<qt
; i
++)
2033 for(int j=0; j<64; j++)
2034 mem[j^0x01] = jaguar_byte_read(pc + j);
2036 pc += Dasm68000((char *)mem, buffer, 0);
2037 WriteLog("%08X: %s\n", oldpc, buffer);//*/
2039 pc
+= m68k_disassemble(buffer
, pc
, 0, 1);//M68K_CPU_TYPE_68000);
2040 WriteLog("%08X: %s\n", oldpc
, buffer
);//*/
2046 uint8_t JaguarReadByte(uint32_t offset
, uint32_t who
/*=UNKNOWN*/)
2048 uint8_t data
= 0x00;
2051 // First 2M is mirrored in the $0 - $7FFFFF range
2052 if (offset
< 0x800000)
2053 data
= jaguarMainRAM
[offset
& (vjs
.DRAM_size
- 1)];
2054 else if ((offset
>= 0x800000) && (offset
< 0xDFFF00))
2055 data
= jaguarMainROM
[offset
- 0x800000];
2056 else if ((offset
>= 0xDFFF00) && (offset
<= 0xDFFFFF))
2057 data
= CDROMReadByte(offset
, who
);
2058 else if ((offset
>= 0xE00000) && (offset
< 0xE40000))
2059 // data = jaguarBootROM[offset & 0x3FFFF];
2060 // data = jaguarDevBootROM1[offset & 0x3FFFF];
2061 data
= jagMemSpace
[offset
];
2062 else if ((offset
>= 0xF00000) && (offset
< 0xF10000))
2063 data
= TOMReadByte(offset
, who
);
2064 else if ((offset
>= 0xF10000) && (offset
< 0xF20000))
2065 data
= JERRYReadByte(offset
, who
);
2067 data
= jaguar_unknown_readbyte(offset
, who
);
2073 uint16_t JaguarReadWord(uint32_t offset
, uint32_t who
/*=UNKNOWN*/)
2077 // First 2M is mirrored in the $0 - $7FFFFF range
2078 if (offset
< 0x800000)
2080 return (jaguarMainRAM
[(offset
+0) & (vjs
.DRAM_size
- 1)] << 8) | jaguarMainRAM
[(offset
+1) & (vjs
.DRAM_size
- 1)];
2082 else if ((offset
>= 0x800000) && (offset
< 0xDFFF00))
2085 return (jaguarMainROM
[offset
+0] << 8) | jaguarMainROM
[offset
+1];
2087 // else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
2088 else if ((offset
>= 0xDFFF00) && (offset
<= 0xDFFFFE))
2089 return CDROMReadWord(offset
, who
);
2090 else if ((offset
>= 0xE00000) && (offset
<= 0xE3FFFE))
2091 // return (jaguarBootROM[(offset+0) & 0x3FFFF] << 8) | jaguarBootROM[(offset+1) & 0x3FFFF];
2092 // return (jaguarDevBootROM1[(offset+0) & 0x3FFFF] << 8) | jaguarDevBootROM1[(offset+1) & 0x3FFFF];
2093 return (jagMemSpace
[offset
+ 0] << 8) | jagMemSpace
[offset
+ 1];
2094 else if ((offset
>= 0xF00000) && (offset
<= 0xF0FFFE))
2095 return TOMReadWord(offset
, who
);
2096 else if ((offset
>= 0xF10000) && (offset
<= 0xF1FFFE))
2097 return JERRYReadWord(offset
, who
);
2099 return jaguar_unknown_readword(offset
, who
);
2103 void JaguarWriteByte(uint32_t offset
, uint8_t data
, uint32_t who
/*=UNKNOWN*/)
2105 /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18)
2107 WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);
2109 /* if (offset >= 0x4E00 && offset < 0x4E04)
2110 WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/
2111 //Need to check for writes in the range of $18FA70 + 8000...
2113 if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000))
2114 WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/
2118 // First 2M is mirrored in the $0 - $7FFFFF range
2119 if (offset
< 0x800000)
2121 jaguarMainRAM
[offset
& (vjs
.DRAM_size
- 1)] = data
;
2124 else if ((offset
>= 0xDFFF00) && (offset
<= 0xDFFFFF))
2126 CDROMWriteByte(offset
, data
, who
);
2129 else if ((offset
>= 0xF00000) && (offset
<= 0xF0FFFF))
2131 TOMWriteByte(offset
, data
, who
);
2134 else if ((offset
>= 0xF10000) && (offset
<= 0xF1FFFF))
2136 JERRYWriteByte(offset
, data
, who
);
2140 jaguar_unknown_writebyte(offset
, data
, who
);
2145 void JaguarWriteWord(uint32_t offset
, uint16_t data
, uint32_t who
/*=UNKNOWN*/)
2147 /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18)
2149 WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);
2150 WriteLog(" GPU PC = $%06X\n", GPUReadLong(0xF02110, DEBUG));
2152 /* if (offset >= 0x4E00 && offset < 0x4E04)
2153 WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/
2154 /*if (offset == 0x0100)//64*4)
2155 WriteLog("M68K: %s wrote word to VI vector value %04X...\n", whoName[who], data);
2156 if (offset == 0x0102)//64*4)
2157 WriteLog("M68K: %s wrote word to VI vector+2 value %04X...\n", whoName[who], data);//*/
2158 //TEMP--Mirror of F03000? Yes, but only 32-bit CPUs can do it (i.e., NOT the 68K!)
2159 // PLUS, you would handle this in the GPU/DSP WriteLong code! Not here!
2160 //Need to check for writes in the range of $18FA70 + 8000...
2162 if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000))
2163 WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/
2164 /*if (offset >= 0x2C00 && offset <= 0x2CFF)
2165 WriteLog("Jaguar: Word %04X written to TOC+%02X by %s\n", data, offset-0x2C00, whoName[who]);//*/
2169 // First 2M is mirrored in the $0 - $7FFFFF range
2170 if (offset
<= 0x7FFFFE)
2175 1A 69 F0 ($0000) -> Starfield
2176 1A 73 C8 ($0001) -> Final clearing blit & bitmap blit?
2179 1A 8F E8 ($0004) -> "Jaguar" small color logo?
2188 //This MUST be done by the 68K!
2189 /*if (offset == 0x670C)
2190 WriteLog("Jaguar: %s writing to location $670C...\n", whoName[who]);*/
2192 /*extern bool doGPUDis;
2193 //if ((offset == 0x100000 + 75522) && who == GPU) // 76,226 -> 75522
2194 if ((offset == 0x100000 + 128470) && who == GPU) // 107,167 -> 128470 (384 x 250 screen size 16BPP)
2195 //if ((offset >= 0x100000 && offset <= 0x12C087) && who == GPU)
2196 doGPUDis = true;//*/
2197 /*if (offset == 0x100000 + 128470) // 107,167 -> 128470 (384 x 250 screen size 16BPP)
2198 WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);
2199 if ((data & 0xFF00) != 0x7700)
2200 WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/
2201 /*if ((offset >= 0x100000 && offset <= 0x147FFF) && who == GPU)
2203 /*if ((data & 0xFF00) != 0x7700 && who == GPU)
2204 WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/
2205 /*if ((offset >= 0x100000 + 0x48000 && offset <= 0x12C087 + 0x48000) && who == GPU)
2207 /*extern bool doGPUDis;
2208 if (offset == 0x120216 && who == GPU)
2209 doGPUDis = true;//*/
2210 /*extern uint32_t gpu_pc;
2211 if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638))
2213 uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000);
2214 uint32_t y = base / 0x300;
2215 uint32_t x = (base - (y * 0x300)) / 2;
2216 WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L"));
2219 JWW: Writing starfield star 775E at 0011F650 (555984/1447)
2221 //if (offset == (0x001E17F8 + 0x34))
2222 /*if (who == GPU && offset == (0x001E17F8 + 0x34))
2224 // WriteLog("JWW: Write at %08X written to by %s.\n", 0x001E17F8 + 0x34, whoName[who]);//*/
2225 /*extern uint32_t gpu_pc;
2226 if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638))
2228 extern int objectPtr;
2229 // if (offset > 0x148000)
2232 if (starCount > objectPtr)
2235 // if (starCount == 1)
2236 // WriteLog("--> Drawing 1st star...\n");
2238 // uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000);
2239 // uint32_t y = base / 0x300;
2240 // uint32_t x = (base - (y * 0x300)) / 2;
2241 // WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L"));
2243 //A star of interest...
2244 //-->JWW: Writing starfield star 77C9 at 0011D31A (269/155) [s]
2245 //1st trail +3(x), -1(y) -> 272, 154 -> 0011D020
2246 //JWW: Blitter writing echo 77B3 at 0011D022...
2248 //extern bool doGPUDis;
2249 /*if (offset == 0x11D022 + 0x48000 || offset == 0x11D022)// && who == GPU)
2252 WriteLog("JWW: %s writing echo %04X at %08X...\n", whoName[who], data, offset);
2255 if (offset == 0x11D31A + 0x48000 || offset == 0x11D31A)
2256 WriteLog("JWW: %s writing star %04X at %08X...\n", whoName[who], data, offset);//*/
2258 jaguarMainRAM
[(offset
+0) & (vjs
.DRAM_size
- 1)] = data
>> 8;
2259 jaguarMainRAM
[(offset
+1) & (vjs
.DRAM_size
- 1)] = data
& 0xFF;
2262 else if (offset
>= 0xDFFF00 && offset
<= 0xDFFFFE)
2264 CDROMWriteWord(offset
, data
, who
);
2267 else if (offset
>= 0xF00000 && offset
<= 0xF0FFFE)
2269 TOMWriteWord(offset
, data
, who
);
2272 else if (offset
>= 0xF10000 && offset
<= 0xF1FFFE)
2274 JERRYWriteWord(offset
, data
, who
);
2277 // Don't bomb on attempts to write to ROM
2278 else if (offset
>= 0x800000 && offset
<= 0xEFFFFF)
2281 jaguar_unknown_writeword(offset
, data
, who
);
2285 // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!!
2286 uint32_t JaguarReadLong(uint32_t offset
, uint32_t who
/*=UNKNOWN*/)
2288 return (JaguarReadWord(offset
, who
) << 16) | JaguarReadWord(offset
+2, who
);
2292 // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!!
2293 void JaguarWriteLong(uint32_t offset
, uint32_t data
, uint32_t who
/*=UNKNOWN*/)
2295 /* extern bool doDSPDis;
2296 if (offset < 0x400 && !doDSPDis)
2298 WriteLog("JLW: Write to %08X by %s... Starting DSP log!\n\n", offset, whoName[who]);
2301 /*if (offset == 0x0100)//64*4)
2302 WriteLog("M68K: %s wrote dword to VI vector value %08X...\n", whoName[who], data);//*/
2304 JaguarWriteWord(offset
, data
>> 16, who
);
2305 JaguarWriteWord(offset
+2, data
& 0xFFFF, who
);
2309 void JaguarSetScreenBuffer(uint32_t * buffer
)
2311 // This is in TOM, but we set it here...
2312 screenBuffer
= buffer
;
2316 void JaguarSetScreenPitch(uint32_t pitch
)
2318 // This is in TOM, but we set it here...
2319 screenPitch
= pitch
;
2324 // Jaguar console initialization
2326 void JaguarInit(void)
2328 // For randomizing RAM
2329 srand((unsigned int)time(NULL
));
2331 // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents
2332 for(uint32_t i
=0; i
<vjs
.DRAM_size
; i
+=4)
2333 *((uint32_t *)(&jaguarMainRAM
[i
])) = rand();
2335 #ifdef CPU_DEBUG_MEMORY
2336 memset(readMem
, 0x00, 0x400000);
2337 memset(writeMemMin
, 0xFF, 0x400000);
2338 memset(writeMemMax
, 0x00, 0x400000);
2340 // memset(jaguarMainRAM, 0x00, 0x200000);
2341 // memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs...
2342 // memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s...
2343 //NOTE: This *doesn't* fix FlipOut...
2344 //Or does it? Hmm...
2345 //Seems to want $01010101... Dunno why. Investigate!
2346 // memset(jaguarMainROM, 0x01, 0x600000); // & set it to all 01s...
2347 // memset(jaguar_mainRom, 0xFF, 0x600000); // & set it to all Fs...
2348 lowerField
= false; // Reset the lower field flag
2349 //temp, for crappy crap that sux
2350 memset(jaguarMainRAM
+ 0x804, 0xFF, 4);
2352 m68k_pulse_reset(); // Need to do this so UAE disasm doesn't segfault on exit
2362 //New timer based code stuffola...
2363 void HalflineCallback(void);
2364 void RenderCallback(void);
2365 void JaguarReset(void)
2367 // Only problem with this approach: It wipes out RAM loaded files...!
2368 // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents
2369 for (uint32_t i
= 8; i
< vjs
.DRAM_size
; i
+= 4)
2371 *((uint32_t *)(&jaguarMainRAM
[i
])) = rand();
2374 // New timer base code stuffola...
2375 InitializeEventList();
2376 //Need to change this so it uses the single RAM space and load the BIOS
2377 //into it somewhere...
2378 //Also, have to change this here and in JaguarReadXX() currently
2379 // Only use the system BIOS if it's available...! (it's always available now!)
2380 // AND only if a jaguar cartridge has been inserted.
2381 #ifndef NEWMODELSBIOSHANDLER
2382 if (vjs
.useJaguarBIOS
&& jaguarCartInserted
&& !vjs
.hardwareTypeAlpine
&& !vjs
.softTypeDebugger
)
2384 memcpy(jaguarMainRAM
, jagMemSpace
+ 0xE00000, 8);
2386 if (vjs
.useJaguarBIOS
&& jaguarCartInserted
)
2393 SET32(jaguarMainRAM
, 4, jaguarRunAddress
);
2396 // WriteLog("jaguar_reset():\n");
2402 m68k_pulse_reset(); // Reset the 68000
2403 WriteLog("Jaguar: 68K reset. PC=%06X SP=%08X\n", m68k_get_reg(NULL
, M68K_REG_PC
), m68k_get_reg(NULL
, M68K_REG_A7
));
2404 lowerField
= false; // Reset the lower field flag
2405 // SetCallbackTime(ScanlineCallback, 63.5555);
2406 // SetCallbackTime(ScanlineCallback, 31.77775);
2407 SetCallbackTime(HalflineCallback
, (vjs
.hardwareTypeNTSC
? 31.777777777 : 32.0));
2411 void JaguarDone(void)
2413 #ifdef CPU_DEBUG_MEMORY
2414 /* WriteLog("\nJaguar: Memory Usage Stats (return addresses)\n\n");
2416 for(uint32_t i=0; i<=raPtr; i++)
2418 WriteLog("\t%08X\n", returnAddr[i]);
2419 WriteLog("M68000 disassembly at $%08X...\n", returnAddr[i] - 16);
2420 jaguar_dasm(returnAddr[i] - 16, 16);
2425 /* int start = 0, end = 0;
2426 bool endTriggered = false, startTriggered = false;
2427 for(int i=0; i<0x400000; i++)
2429 if (readMem[i] && writeMemMin[i] != 0xFF && writeMemMax != 0x00)
2431 if (!startTriggered)
2432 startTriggered = true, endTriggered = false, start = i;
2434 WriteLog("\t\tMin/Max @ %06X: %u/%u\n", i, writeMemMin[i], writeMemMax[i]);
2440 end = i - 1, endTriggered = true, startTriggered = false;
2441 WriteLog("\tMemory range accessed: %06X - %06X\n", start, end);
2448 // for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++)
2449 // WriteLog("\tA%i = 0x%.8x\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
2450 int32_t topOfStack
= m68k_get_reg(NULL
, M68K_REG_A7
);
2451 WriteLog("M68K: Top of stack: %08X -> (%08X). Stack trace:\n", topOfStack
, JaguarReadLong(topOfStack
));
2453 for(int i
=-2; i
<9; i
++)
2454 WriteLog("%06X: %08X\n", topOfStack
+ (i
* 4), JaguarReadLong(topOfStack
+ (i
* 4)));
2456 uint32_t address
= topOfStack
- (4 * 4 * 3);
2458 for(int i
=0; i
<10; i
++)
2460 WriteLog("%06X:", address
);
2462 for(int j
=0; j
<4; j
++)
2464 WriteLog(" %08X", JaguarReadLong(address
));
2472 /* WriteLog("\nM68000 disassembly at $802288...\n");
2473 jaguar_dasm(0x802288, 3);
2474 WriteLog("\nM68000 disassembly at $802200...\n");
2475 jaguar_dasm(0x802200, 500);
2476 WriteLog("\nM68000 disassembly at $802518...\n");
2477 jaguar_dasm(0x802518, 100);//*/
2479 /* WriteLog("\n\nM68000 disassembly at $803F00 (look @ $803F2A)...\n");
2480 jaguar_dasm(0x803F00, 500);
2483 /* WriteLog("\n\nM68000 disassembly at $802B00 (look @ $802B5E)...\n");
2484 jaguar_dasm(0x802B00, 500);
2487 /* WriteLog("\n\nM68000 disassembly at $809900 (look @ $8099F8)...\n");
2488 jaguar_dasm(0x809900, 500);
2491 /* WriteLog("\n\nDump of $8093C8:\n\n");
2492 for(int i=0x8093C8; i<0x809900; i+=4)
2493 WriteLog("%06X: %08X\n", i, JaguarReadLong(i));//*/
2494 /* WriteLog("\n\nM68000 disassembly at $90006C...\n");
2495 jaguar_dasm(0x90006C, 500);
2497 /* WriteLog("\n\nM68000 disassembly at $1AC000...\n");
2498 jaguar_dasm(0x1AC000, 6000);
2501 // WriteLog("Jaguar: CD BIOS version %04X\n", JaguarReadWord(0x3004));
2502 WriteLog("Jaguar: Interrupt enable = $%02X\n", TOMReadByte(0xF000E1, JAGUAR
) & 0x1F);
2503 WriteLog("Jaguar: Video interrupt is %s (line=%u)\n", ((TOMIRQEnabled(IRQ_VIDEO
))
2504 && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled", TOMReadWord(0xF0004E, JAGUAR
));
2505 M68K_show_context();
2515 // temp, until debugger is in place
2516 //00802016: jsr $836F1A.l
2517 //0080201C: jsr $836B30.l
2518 //00802022: jsr $836B18.l
2519 //00802028: jsr $8135F0.l
2520 //00813C1E: jsr $813F76.l
2521 //00802038: jsr $836D00.l
2522 //00802098: jsr $8373A4.l
2523 //008020A2: jsr $83E24A.l
2524 //008020BA: jsr $83E156.l
2525 //008020C6: jsr $83E19C.l
2526 //008020E6: jsr $8445E8.l
2527 //008020EC: jsr $838C20.l
2528 //0080211A: jsr $838ED6.l
2529 //00802124: jsr $89CA56.l
2530 //0080212A: jsr $802B48.l
2532 WriteLog("-------------------------------------------\n");
2533 JaguarDasm(0x8445E8, 0x200);
2534 WriteLog("-------------------------------------------\n");
2535 JaguarDasm(0x838C20, 0x200);
2536 WriteLog("-------------------------------------------\n");
2537 JaguarDasm(0x838ED6, 0x200);
2538 WriteLog("-------------------------------------------\n");
2539 JaguarDasm(0x89CA56, 0x200);
2540 WriteLog("-------------------------------------------\n");
2541 JaguarDasm(0x802B48, 0x200);
2542 WriteLog("\n\nM68000 disassembly at $802000...\n");
2543 JaguarDasm(0x802000, 6000);
2546 /* WriteLog("\n\nM68000 disassembly at $6004...\n");
2547 JaguarDasm(0x6004, 10000);
2549 // WriteLog("\n\nM68000 disassembly at $802000...\n");
2550 // JaguarDasm(0x802000, 0x1000);
2551 // WriteLog("\n\nM68000 disassembly at $4100...\n");
2552 // JaguarDasm(0x4100, 200);
2553 // WriteLog("\n\nM68000 disassembly at $800800...\n");
2554 // JaguarDasm(0x800800, 0x1000);
2558 // Temp debugging stuff
2560 void DumpMainMemory(void)
2562 FILE * fp
= fopen("./memdump.bin", "wb");
2567 fwrite(jaguarMainRAM
, 1, vjs
.DRAM_size
, fp
);
2572 uint8_t * GetRamPtr(void)
2574 return jaguarMainRAM
;
2579 // New Jaguar execution stack
2580 // This executes 1 frame's worth of code.
2583 void JaguarExecuteNew(void)
2589 double timeToNextEvent
= GetTimeToNextEvent();
2590 //WriteLog("JEN: Time to next event (%u) is %f usec (%u RISC cycles)...\n", nextEvent, timeToNextEvent, USEC_TO_RISC_CYCLES(timeToNextEvent));
2592 m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent
));
2595 GPUExec(USEC_TO_RISC_CYCLES(timeToNextEvent
));
2603 // Step over function
2604 void JaguarStepOver(int depth
)
2607 //bool case55 = false;
2623 switch (M68KGetCurrentOpcodeFamily())
2642 //m68kSR = m68k_get_reg(NULL, M68K_REG_SR);
2643 if (m68k_get_reg(NULL
, M68K_REG_SR
) & 0x4)
2658 JaguarStepOver(depth
+1);
2676 #pragma message("Warning: !!! Need to verify the Jaguar Step Over function !!!")
2678 #warning "!!! Need to verify the Jaguar Step Over function !!!"
2683 // Step into function
2684 void JaguarStepInto(void)
2686 // double timeToNextEvent = GetTimeToNextEvent();
2688 m68k_execute(USEC_TO_M68K_CYCLES(0));
2689 // m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent));
2692 GPUExec(USEC_TO_RISC_CYCLES(0));
2694 // HandleNextEvent();
2696 #pragma message("Warning: !!! Need to verify the Jaguar Step Into function !!!")
2698 #warning "!!! Need to verify the Jaguar Step Into function !!!"
2704 // The thing to keep in mind is that the VC is advanced every HALF line,
2705 // regardless of whether the display is interlaced or not. The only difference
2706 // with an interlaced display is that the high bit of VC will be set when the
2707 // lower field is being rendered. (NB: The high bit of VC is ALWAYS set on the
2708 // lower field, regardless of whether it's in interlace mode or not.
2709 // NB2: Seems it doesn't always, not sure what the constraint is...)
2711 // Normally, TVs will render a full frame in 1/30s (NTSC) or 1/25s (PAL) by
2712 // rendering two fields that are slighty vertically offset from each other.
2713 // Each field is created in 1/60s (NTSC) or 1/50s (PAL), and every other line
2714 // is rendered in this mode so that each field, when overlaid on each other,
2715 // will yield the final picture at the full resolution for the full frame.
2717 // We execute a half frame in each timeslice (1/60s NTSC, 1/50s PAL).
2718 // Since the number of lines in a FULL frame is 525 for NTSC, 625 for PAL,
2719 // it will be half this number for a half frame. BUT, since we're counting
2720 // HALF lines, we double this number and we're back at 525 for NTSC, 625 for
2723 // Scanline times are 63.5555... μs in NTSC and 64 μs in PAL
2724 // Half line times are, naturally, half of this. :-P
2726 void HalflineCallback(void)
2728 uint16_t vc
= TOMReadWord(0xF00006, JAGUAR
);
2729 uint16_t vp
= TOMReadWord(0xF0003E, JAGUAR
) + 1;
2730 uint16_t vi
= TOMReadWord(0xF0004E, JAGUAR
);
2731 // uint16_t vbb = TOMReadWord(0xF00040, JAGUAR);
2734 // Each # of lines is for a full frame == 1/30s (NTSC), 1/25s (PAL).
2735 // So we cut the number of half-lines in a frame in half. :-P
2736 uint16_t numHalfLines
= ((vjs
.hardwareTypeNTSC
? 525 : 625) * 2) / 2;
2738 if ((vc
& 0x7FF) >= numHalfLines
)
2740 lowerField
= !lowerField
;
2741 // If we're rendering the lower field, set the high bit (#11, counting
2743 vc
= (lowerField
? 0x0800 : 0x0000);
2746 //WriteLog("HLC: Currently on line %u (VP=%u)...\n", vc, vp);
2747 TOMWriteWord(0xF00006, vc
, JAGUAR
);
2749 // Time for Vertical Interrupt?
2750 if ((vc
& 0x7FF) == vi
&& (vc
& 0x7FF) > 0 && TOMIRQEnabled(IRQ_VIDEO
))
2752 // We don't have to worry about autovectors & whatnot because the Jaguar
2753 // tells you through its HW registers who sent the interrupt...
2754 TOMSetPendingVideoInt();
2758 TOMExecHalfline(vc
, true);
2760 //Change this to VBB???
2761 //Doesn't seem to matter (at least for Flip Out & I-War)
2762 if ((vc
& 0x7FF) == 0)
2769 SetCallbackTime(HalflineCallback
, (vjs
.hardwareTypeNTSC
? 31.777777777 : 32.0));