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cf76e892 JPM |
1 | // |
2 | // JAGUAR.CPP | |
3 | // | |
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. :-) | |
9 | // | |
10 | // JLH = James Hammons | |
ed31b999 | 11 | // JPM = Jean-Paul Mari |
cf76e892 JPM |
12 | // |
13 | // WHO WHEN WHAT | |
14 | // --- ---------- ----------------------------------------------------------- | |
15 | // JLH 11/25/2009 Major rewrite of memory subsystem and handlers | |
ed31b999 | 16 | // JPM 09/04/2018 Added the new Models and BIOS handler |
1081a838 | 17 | // JPM 10/13/2018 Added breakpoints features |
0029c507 | 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 |
2a13a691 | 19 | // JPM Aug./2019 Fix potential emulator freeze after an exception has occured |
28c2bdc6 | 20 | // JPM Feb./2021 Added a specific breakpoint for the M68K bus error exception, and a M68K exception catch detection |
44432db5 | 21 | // JPM Apr./2021 Keep number of M68K cycles used in tracing mode |
cf76e892 JPM |
22 | // |
23 | ||
24 | ||
ed31b999 JPM |
25 | #define NEWMODELSBIOSHANDLER // New Jaguar models and bios usage handler |
26 | ||
27 | ||
cf76e892 | 28 | #include "jaguar.h" |
aae93d86 | 29 | //#include <QApplication> |
8646ea44 | 30 | #include <QtWidgets/QMessageBox> |
cf76e892 JPM |
31 | #include <time.h> |
32 | #include <SDL.h> | |
33 | #include "SDL_opengl.h" | |
34 | #include "blitter.h" | |
35 | #include "cdrom.h" | |
36 | #include "dac.h" | |
37 | #include "dsp.h" | |
38 | #include "eeprom.h" | |
39 | #include "event.h" | |
40 | #include "foooked.h" | |
41 | #include "gpu.h" | |
42 | #include "jerry.h" | |
43 | #include "joystick.h" | |
44 | #include "log.h" | |
45 | #include "m68000/m68kinterface.h" | |
46 | //#include "memory.h" | |
47 | #include "memtrack.h" | |
48 | #include "mmu.h" | |
49 | #include "settings.h" | |
50 | #include "tom.h" | |
1081a838 | 51 | //#include "debugger/BreakpointsWin.h" |
ed31b999 JPM |
52 | #ifdef NEWMODELSBIOSHANDLER |
53 | #include "modelsBIOS.h" | |
54 | #endif | |
cf76e892 JPM |
55 | |
56 | #define CPU_DEBUG | |
57 | //Do this in makefile??? Yes! Could, but it's easier to define here... | |
58 | //#define LOG_UNMAPPED_MEMORY_ACCESSES | |
59 | //#define ABORT_ON_UNMAPPED_MEMORY_ACCESS | |
60 | //#define ABORT_ON_ILLEGAL_INSTRUCTIONS | |
61 | //#define ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION | |
62 | #define CPU_DEBUG_MEMORY | |
63 | //#define LOG_CD_BIOS_CALLS | |
64 | #define CPU_DEBUG_TRACING | |
65 | #define ALPINE_FUNCTIONS | |
66 | ||
67 | // Private function prototypes | |
68 | ||
69 | unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who = UNKNOWN); | |
70 | unsigned jaguar_unknown_readword(unsigned address, uint32_t who = UNKNOWN); | |
71 | void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who = UNKNOWN); | |
72 | void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who = UNKNOWN); | |
73 | void M68K_show_context(void); | |
74 | #if 0 | |
75 | void M68K_Debughalt(void); | |
76 | #endif | |
77 | ||
78 | // External variables | |
79 | ||
80 | #ifdef CPU_DEBUG_MEMORY | |
81 | extern bool startMemLog; // Set by "e" key | |
82 | extern int effect_start; | |
83 | extern int effect_start2, effect_start3, effect_start4, effect_start5, effect_start6; | |
84 | #endif | |
85 | ||
86 | // Really, need to include memory.h for this, but it might interfere with some stuff... | |
87 | extern uint8_t jagMemSpace[]; | |
88 | ||
89 | // Internal variables | |
90 | ||
91 | uint32_t jaguar_active_memory_dumps = 0; | |
92 | ||
93 | uint32_t jaguarMainROMCRC32, jaguarROMSize, jaguarRunAddress; | |
94 | bool jaguarCartInserted = false; | |
95 | bool lowerField = false; | |
96 | ||
97 | #ifdef CPU_DEBUG_MEMORY | |
98 | uint8_t writeMemMax[0x400000], writeMemMin[0x400000]; | |
99 | uint8_t readMem[0x400000]; | |
100 | uint32_t returnAddr[4000], raPtr = 0xFFFFFFFF; | |
101 | #endif | |
102 | ||
103 | uint32_t pcQueue[0x400]; | |
104 | uint32_t a0Queue[0x400]; | |
105 | uint32_t a1Queue[0x400]; | |
106 | uint32_t a2Queue[0x400]; | |
107 | uint32_t a3Queue[0x400]; | |
108 | uint32_t a4Queue[0x400]; | |
109 | uint32_t a5Queue[0x400]; | |
110 | uint32_t a6Queue[0x400]; | |
111 | uint32_t a7Queue[0x400]; | |
112 | uint32_t d0Queue[0x400]; | |
113 | uint32_t d1Queue[0x400]; | |
114 | uint32_t d2Queue[0x400]; | |
115 | uint32_t d3Queue[0x400]; | |
116 | uint32_t d4Queue[0x400]; | |
117 | uint32_t d5Queue[0x400]; | |
118 | uint32_t d6Queue[0x400]; | |
119 | uint32_t d7Queue[0x400]; | |
120 | uint32_t srQueue[0x400]; | |
121 | uint32_t pcQPtr = 0; | |
122 | bool startM68KTracing = false; | |
123 | ||
124 | // Breakpoint on memory access vars (exported) | |
125 | bool bpmActive = false; | |
126 | bool bpmSaveActive = false; | |
1081a838 | 127 | size_t bpmHitCounts; |
cf76e892 | 128 | uint32_t bpmAddress1; |
1081a838 JPM |
129 | S_BrkInfo *brkInfo; |
130 | size_t brkNbr; | |
cf76e892 | 131 | |
2a13a691 | 132 | bool frameDone; |
cf76e892 JPM |
133 | |
134 | // | |
135 | // Callback function to detect illegal instructions | |
136 | // | |
137 | void GPUDumpDisassembly(void); | |
138 | void GPUDumpRegisters(void); | |
139 | static bool start = false; | |
140 | ||
141 | void M68KInstructionHook(void) | |
142 | { | |
143 | uint32_t m68kPC = m68k_get_reg(NULL, M68K_REG_PC); | |
144 | // Temp, for comparing... | |
145 | { | |
146 | /* static char buffer[2048];//, mem[64]; | |
147 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); | |
148 | printf("%08X: %s\n", m68kPC, buffer);//*/ | |
149 | } | |
150 | //JaguarDasm(m68kPC, 1); | |
151 | //Testing Hover Strike... | |
152 | #if 0 | |
153 | //Dasm(regs.pc, 1); | |
154 | static int hitCount = 0; | |
155 | static int inRoutine = 0; | |
156 | static int instSeen; | |
157 | ||
158 | //if (regs.pc == 0x80340A) | |
159 | if (m68kPC == 0x803416) | |
160 | { | |
161 | hitCount++; | |
162 | inRoutine = 1; | |
163 | instSeen = 0; | |
164 | printf("%i: $80340A start. A0=%08X, A1=%08X ", hitCount, m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1)); | |
165 | } | |
166 | else if (m68kPC == 0x803422) | |
167 | { | |
168 | inRoutine = 0; | |
169 | printf("(%i instructions)\n", instSeen); | |
170 | } | |
171 | ||
172 | if (inRoutine) | |
173 | instSeen++; | |
174 | #endif | |
175 | ||
176 | // For code tracing... | |
177 | #ifdef CPU_DEBUG_TRACING | |
178 | if (startM68KTracing) | |
179 | { | |
180 | static char buffer[2048]; | |
181 | ||
182 | m68k_disassemble(buffer, m68kPC, 0, 1); | |
183 | WriteLog("%06X: %s\n", m68kPC, buffer); | |
184 | } | |
185 | #endif | |
186 | ||
187 | // For tracebacks... | |
188 | // Ideally, we'd save all the registers as well... | |
189 | pcQueue[pcQPtr] = m68kPC; | |
190 | a0Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A0); | |
191 | a1Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A1); | |
192 | a2Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A2); | |
193 | a3Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A3); | |
194 | a4Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A4); | |
195 | a5Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A5); | |
196 | a6Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A6); | |
197 | a7Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A7); | |
198 | d0Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D0); | |
199 | d1Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D1); | |
200 | d2Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D2); | |
201 | d3Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D3); | |
202 | d4Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D4); | |
203 | d5Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D5); | |
204 | d6Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D6); | |
205 | d7Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D7); | |
206 | srQueue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_SR); | |
207 | pcQPtr++; | |
208 | pcQPtr &= 0x3FF; | |
209 | ||
210 | if (m68kPC & 0x01) // Oops! We're fetching an odd address! | |
211 | { | |
212 | WriteLog("M68K: Attempted to execute from an odd address!\n\nBacktrace:\n\n"); | |
213 | ||
214 | static char buffer[2048]; | |
215 | for(int i=0; i<0x400; i++) | |
216 | { | |
217 | // WriteLog("[A2=%08X, D0=%08X]\n", a2Queue[(pcQPtr + i) & 0x3FF], d0Queue[(pcQPtr + i) & 0x3FF]); | |
218 | 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]); | |
219 | m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], 0, 1);//M68K_CPU_TYPE_68000); | |
220 | WriteLog("\t%08X: %s\n", pcQueue[(pcQPtr + i) & 0x3FF], buffer); | |
221 | } | |
222 | WriteLog("\n"); | |
223 | ||
224 | uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); | |
225 | WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); | |
226 | for(int i=0; i<10; i++) | |
227 | WriteLog("%06X: %08X\n", topOfStack - (i * 4), JaguarReadLong(topOfStack - (i * 4))); | |
228 | WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); | |
229 | M68K_show_context(); | |
230 | LogDone(); | |
231 | exit(0); | |
232 | } | |
233 | ||
234 | // Disassemble everything | |
235 | /* { | |
236 | static char buffer[2048]; | |
237 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); | |
238 | WriteLog("%08X: %s", m68kPC, buffer); | |
239 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", | |
240 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), | |
241 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); | |
242 | }//*/ | |
243 | /* if (m68kPC >= 0x807EC4 && m68kPC <= 0x807EDB) | |
244 | { | |
245 | static char buffer[2048]; | |
246 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); | |
247 | WriteLog("%08X: %s", m68kPC, buffer); | |
248 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", | |
249 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), | |
250 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); | |
251 | }//*/ | |
252 | /* if (m68kPC == 0x8D0E48 && effect_start5) | |
253 | { | |
254 | WriteLog("\nM68K: At collision detection code. Exiting!\n\n"); | |
255 | GPUDumpRegisters(); | |
256 | GPUDumpDisassembly(); | |
257 | log_done(); | |
258 | exit(0); | |
259 | }//*/ | |
260 | /* uint16_t opcode = JaguarReadWord(m68kPC); | |
261 | if (opcode == 0x4E75) // RTS | |
262 | { | |
263 | if (startMemLog) | |
264 | // WriteLog("Jaguar: Returning from subroutine to %08X\n", JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7))); | |
265 | { | |
266 | uint32_t addr = JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7)); | |
267 | bool found = false; | |
268 | if (raPtr != 0xFFFFFFFF) | |
269 | { | |
270 | for(uint32_t i=0; i<=raPtr; i++) | |
271 | { | |
272 | if (returnAddr[i] == addr) | |
273 | { | |
274 | found = true; | |
275 | break; | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
280 | if (!found) | |
281 | returnAddr[++raPtr] = addr; | |
282 | } | |
283 | }//*/ | |
284 | ||
285 | //Flip Out! debugging... | |
286 | //805F46, 806486 | |
287 | /* | |
288 | 00805FDC: movea.l #$9c6f8, A0 D0=00100010, A0=00100000 | |
289 | 00805FE2: move.w #$10, (A0)+ D0=00100010, A0=0009C6F8 | |
290 | 00805FE6: cmpa.l #$c96f8, A0 D0=00100010, A0=0009C6FA | |
291 | 00805FEC: bne 805fe2 D0=00100010, A0=0009C6FA | |
292 | ||
293 | 0080603A: move.l #$11ed7c, $100.w D0=61700080, A0=000C96F8, D1=00000000, A1=000040D8 | |
294 | ||
295 | 0012314C: move.l (A0)+, (A1)+ D0=61700080, A0=00124174, D1=00000000, A1=00F03FFC | |
296 | 0012314E: cmpa.l #$f04000, A1 D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
297 | 00123154: blt 12314c D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
298 | 00123156: move.l #$0, $f035d0.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
299 | 00123160: move.l #$f03000, $f02110.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
300 | 0012316A: move.l #$1, $f02114.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
301 | 00123174: rts D0=61700080, A0=00124178, D1=00000000, A1=00F04000 | |
302 | */ | |
303 | /* static char buffer[2048]; | |
304 | //if (m68kPC > 0x805F48) start = true; | |
305 | //if (m68kPC > 0x806486) start = true; | |
306 | //if (m68kPC == 0x805FEE) start = true; | |
307 | //if (m68kPC == 0x80600C)// start = true; | |
308 | if (m68kPC == 0x802058) start = true; | |
309 | //{ | |
310 | // GPUDumpRegisters(); | |
311 | // GPUDumpDisassembly(); | |
312 | // | |
313 | // M68K_show_context(); | |
314 | // log_done(); | |
315 | // exit(0); | |
316 | //} | |
317 | if (start) | |
318 | { | |
319 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); | |
320 | 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)); | |
321 | }//*/ | |
322 | ||
323 | /* if (m68kPC == 0x803F16) | |
324 | { | |
325 | WriteLog("M68K: Registers found at $803F16:\n"); | |
326 | WriteLog("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); | |
327 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) | |
328 | WriteLog("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
329 | WriteLog("\n"); | |
330 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) | |
331 | WriteLog("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
332 | }*/ | |
333 | //Looks like the DSP is supposed to return $12345678 when it finishes its validation routine... | |
334 | // !!! Investigate !!! | |
335 | /*extern bool doDSPDis; | |
336 | static bool disgo = false; | |
337 | if (m68kPC == 0x50222) | |
338 | { | |
339 | // CD BIOS hacking | |
340 | // WriteLog("M68K: About to stuff $12345678 into $F1B000 (=%08X)...\n", DSPReadLong(0xF1B000, M68K)); | |
341 | // DSPWriteLong(0xF1B000, 0x12345678, M68K); | |
342 | // disgo = true; | |
343 | } | |
344 | if (m68kPC == 0x5000) | |
345 | // doDSPDis = true; | |
346 | disgo = true; | |
347 | if (disgo) | |
348 | { | |
349 | static char buffer[2048]; | |
350 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); | |
351 | WriteLog("%08X: %s", m68kPC, buffer); | |
352 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n", | |
353 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), | |
354 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); | |
355 | }//*/ | |
356 | /* if (m68kPC == 0x82E1A) | |
357 | { | |
358 | static char buffer[2048]; | |
359 | m68k_disassemble(buffer, m68kPC, 0);//M68K_CPU_TYPE_68000); | |
360 | WriteLog("--> [Routine start] %08X: %s", m68kPC, buffer); | |
361 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X(cmd), D1=%08X(# bytes), D2=%08X\n", | |
362 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), | |
363 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); | |
364 | }//*/ | |
365 | /* if (m68kPC == 0x82E58) | |
366 | WriteLog("--> [Routine end]\n"); | |
367 | if (m68kPC == 0x80004) | |
368 | { | |
369 | WriteLog("--> [Calling BusWrite2] D2: %08X\n", m68k_get_reg(NULL, M68K_REG_D2)); | |
370 | // m68k_set_reg(M68K_REG_D2, 0x12345678); | |
371 | }//*/ | |
372 | ||
373 | #ifdef LOG_CD_BIOS_CALLS | |
374 | /* | |
375 | CD_init:: -> $3000 | |
376 | BIOS_VER:: -> $3004 | |
377 | CD_mode:: -> $3006 | |
378 | CD_ack:: -> $300C | |
379 | CD_jeri:: -> $3012 | |
380 | CD_spin:: -> $3018 | |
381 | CD_stop:: -> $301E | |
382 | CD_mute:: -> $3024 | |
383 | CD_umute:: -> $302A | |
384 | CD_paus:: -> $3030 | |
385 | CD_upaus:: -> $3036 | |
386 | CD_read:: -> $303C | |
387 | CD_uread:: -> $3042 | |
388 | CD_setup:: -> $3048 | |
389 | CD_ptr:: -> $304E | |
390 | CD_osamp:: -> $3054 | |
391 | CD_getoc:: -> $305A | |
392 | CD_initm:: -> $3060 | |
393 | CD_initf:: -> $3066 | |
394 | CD_switch:: -> $306C | |
395 | */ | |
396 | if (m68kPC == 0x3000) | |
397 | WriteLog("M68K: CD_init\n"); | |
398 | else if (m68kPC == 0x3006 + (6 * 0)) | |
399 | WriteLog("M68K: CD_mode\n"); | |
400 | else if (m68kPC == 0x3006 + (6 * 1)) | |
401 | WriteLog("M68K: CD_ack\n"); | |
402 | else if (m68kPC == 0x3006 + (6 * 2)) | |
403 | WriteLog("M68K: CD_jeri\n"); | |
404 | else if (m68kPC == 0x3006 + (6 * 3)) | |
405 | WriteLog("M68K: CD_spin\n"); | |
406 | else if (m68kPC == 0x3006 + (6 * 4)) | |
407 | WriteLog("M68K: CD_stop\n"); | |
408 | else if (m68kPC == 0x3006 + (6 * 5)) | |
409 | WriteLog("M68K: CD_mute\n"); | |
410 | else if (m68kPC == 0x3006 + (6 * 6)) | |
411 | WriteLog("M68K: CD_umute\n"); | |
412 | else if (m68kPC == 0x3006 + (6 * 7)) | |
413 | WriteLog("M68K: CD_paus\n"); | |
414 | else if (m68kPC == 0x3006 + (6 * 8)) | |
415 | WriteLog("M68K: CD_upaus\n"); | |
416 | else if (m68kPC == 0x3006 + (6 * 9)) | |
417 | WriteLog("M68K: CD_read\n"); | |
418 | else if (m68kPC == 0x3006 + (6 * 10)) | |
419 | WriteLog("M68K: CD_uread\n"); | |
420 | else if (m68kPC == 0x3006 + (6 * 11)) | |
421 | WriteLog("M68K: CD_setup\n"); | |
422 | else if (m68kPC == 0x3006 + (6 * 12)) | |
423 | WriteLog("M68K: CD_ptr\n"); | |
424 | else if (m68kPC == 0x3006 + (6 * 13)) | |
425 | WriteLog("M68K: CD_osamp\n"); | |
426 | else if (m68kPC == 0x3006 + (6 * 14)) | |
427 | WriteLog("M68K: CD_getoc\n"); | |
428 | else if (m68kPC == 0x3006 + (6 * 15)) | |
429 | WriteLog("M68K: CD_initm\n"); | |
430 | else if (m68kPC == 0x3006 + (6 * 16)) | |
431 | WriteLog("M68K: CD_initf\n"); | |
432 | else if (m68kPC == 0x3006 + (6 * 17)) | |
433 | WriteLog("M68K: CD_switch\n"); | |
434 | ||
435 | if (m68kPC >= 0x3000 && m68kPC <= 0x306C) | |
436 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n", | |
437 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), | |
438 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); | |
439 | #endif | |
440 | ||
441 | #ifdef ABORT_ON_ILLEGAL_INSTRUCTIONS | |
442 | if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC), 0))//M68K_CPU_TYPE_68000)) | |
443 | { | |
444 | #ifndef ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION | |
445 | if (m68k_read_memory_16(m68kPC) == 0x4AFC) | |
446 | { | |
447 | // This is a kludge to let homebrew programs work properly (i.e., let the other processors | |
448 | // keep going even when the 68K dumped back to the debugger or what have you). | |
449 | //dis no wok right! | |
450 | // m68k_set_reg(M68K_REG_PC, m68kPC - 2); | |
451 | // Try setting the vector to the illegal instruction... | |
452 | //This doesn't work right either! Do something else! Quick! | |
453 | // SET32(jaguar_mainRam, 0x10, m68kPC); | |
454 | ||
455 | return; | |
456 | } | |
457 | #endif | |
458 | ||
459 | WriteLog("\nM68K encountered an illegal instruction at %08X!!!\n\nAborting!\n", m68kPC); | |
460 | uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); | |
461 | WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); | |
462 | uint32_t address = topOfStack - (4 * 4 * 3); | |
463 | ||
464 | for(int i=0; i<10; i++) | |
465 | { | |
466 | WriteLog("%06X:", address); | |
467 | ||
468 | for(int j=0; j<4; j++) | |
469 | { | |
470 | WriteLog(" %08X", JaguarReadLong(address)); | |
471 | address += 4; | |
472 | } | |
473 | ||
474 | WriteLog("\n"); | |
475 | } | |
476 | ||
477 | WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); | |
478 | M68K_show_context(); | |
479 | ||
480 | //temp | |
481 | // WriteLog("\n\n68K disasm\n\n"); | |
482 | // jaguar_dasm(0x802000, 0x50C); | |
483 | // WriteLog("\n\n"); | |
484 | //endoftemp | |
485 | ||
486 | LogDone(); | |
487 | exit(0); | |
488 | }//*/ | |
489 | #endif | |
490 | } | |
491 | ||
492 | #if 0 | |
493 | Now here be dragons... | |
494 | Here is how memory ranges are defined in the CoJag driver. | |
495 | Note that we only have to be concerned with 3 entities read/writing anything: | |
496 | The main CPU, the GPU, and the DSP. Everything else is unnecessary. So we can keep our main memory | |
497 | checking in jaguar.cpp, gpu.cpp and dsp.cpp. There should be NO checking in TOM, JERRY, etc. other than | |
498 | things that are entirely internal to those modules. This way we should be able to get a handle on all | |
499 | this crap which is currently scattered over Hell's Half Acre(tm). | |
500 | ||
501 | Also: We need to distinguish whether or not we need .b, .w, and .dw versions of everything, or if there | |
502 | is a good way to collapse that shit (look below for inspiration). Current method works, but is error prone. | |
503 | ||
504 | /************************************* | |
505 | * | |
506 | * Main CPU memory handlers | |
507 | * | |
508 | *************************************/ | |
509 | ||
510 | static ADDRESS_MAP_START( m68020_map, ADDRESS_SPACE_PROGRAM, 32 ) | |
511 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_BASE(&jaguar_shared_ram) AM_SHARE(1) | |
512 | AM_RANGE(0x800000, 0x9fffff) AM_ROM AM_REGION(REGION_USER1, 0) AM_BASE(&rom_base) | |
513 | AM_RANGE(0xa00000, 0xa1ffff) AM_RAM | |
514 | AM_RANGE(0xa20000, 0xa21fff) AM_READWRITE(eeprom_data_r, eeprom_data_w) AM_BASE(&generic_nvram32) AM_SIZE(&generic_nvram_size) | |
515 | AM_RANGE(0xa30000, 0xa30003) AM_WRITE(watchdog_reset32_w) | |
516 | AM_RANGE(0xa40000, 0xa40003) AM_WRITE(eeprom_enable_w) | |
517 | AM_RANGE(0xb70000, 0xb70003) AM_READWRITE(misc_control_r, misc_control_w) | |
518 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(2) | |
519 | AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) | |
520 | AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) | |
521 | AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_BASE(&jaguar_gpu_clut) AM_SHARE(2) | |
522 | AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) | |
523 | AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) | |
524 | AM_RANGE(0xf03000, 0xf03fff) AM_MIRROR(0x008000) AM_RAM AM_BASE(&jaguar_gpu_ram) AM_SHARE(3) | |
525 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) | |
526 | AM_RANGE(0xf16000, 0xf1600b) AM_READ(cojag_gun_input_r) // GPI02 | |
527 | AM_RANGE(0xf17000, 0xf17003) AM_READ(status_r) // GPI03 | |
528 | // AM_RANGE(0xf17800, 0xf17803) AM_WRITE(latch_w) // GPI04 | |
529 | AM_RANGE(0xf17c00, 0xf17c03) AM_READ(jamma_r) // GPI05 | |
530 | AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) | |
531 | AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) | |
532 | AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_BASE(&jaguar_dsp_ram) AM_SHARE(4) | |
533 | ADDRESS_MAP_END | |
534 | ||
535 | /************************************* | |
536 | * | |
537 | * GPU memory handlers | |
538 | * | |
539 | *************************************/ | |
540 | ||
541 | static ADDRESS_MAP_START( gpu_map, ADDRESS_SPACE_PROGRAM, 32 ) | |
542 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) | |
543 | AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) | |
544 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) | |
545 | AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) | |
546 | AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) | |
547 | AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_SHARE(2) | |
548 | AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) | |
549 | AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) | |
550 | AM_RANGE(0xf03000, 0xf03fff) AM_RAM AM_SHARE(3) | |
551 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) | |
552 | ADDRESS_MAP_END | |
553 | ||
554 | /************************************* | |
555 | * | |
556 | * DSP memory handlers | |
557 | * | |
558 | *************************************/ | |
559 | ||
560 | static ADDRESS_MAP_START( dsp_map, ADDRESS_SPACE_PROGRAM, 32 ) | |
561 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) | |
562 | AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) | |
563 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) | |
564 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) | |
565 | AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) | |
566 | AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) | |
567 | AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_SHARE(4) | |
568 | AM_RANGE(0xf1d000, 0xf1dfff) AM_READ(jaguar_wave_rom_r) AM_BASE(&jaguar_wave_rom) | |
569 | ADDRESS_MAP_END | |
570 | */ | |
571 | #endif | |
572 | ||
573 | //#define EXPERIMENTAL_MEMORY_HANDLING | |
574 | // Experimental memory mappage... | |
575 | // Dunno if this is a good approach or not, but it seems to make better | |
576 | // sense to have all this crap in one spot intstead of scattered all over | |
577 | // the place the way it is now. | |
578 | #ifdef EXPERIMENTAL_MEMORY_HANDLING | |
579 | // Needed defines... | |
580 | #define NEW_TIMER_SYSTEM | |
581 | ||
582 | /* | |
583 | uint8_t jaguarMainRAM[0x400000]; // 68K CPU RAM | |
584 | uint8_t jaguarMainROM[0x600000]; // 68K CPU ROM | |
585 | uint8_t jaguarBootROM[0x040000]; // 68K CPU BIOS ROM--uses only half of this! | |
586 | uint8_t jaguarCDBootROM[0x040000]; // 68K CPU CD BIOS ROM | |
587 | bool BIOSLoaded = false; | |
588 | bool CDBIOSLoaded = false; | |
589 | ||
590 | uint8_t cdRAM[0x100]; | |
591 | uint8_t tomRAM[0x4000]; | |
592 | uint8_t jerryRAM[0x10000]; | |
593 | static uint16_t eeprom_ram[64]; | |
594 | ||
595 | // NOTE: CD BIOS ROM is read from cartridge space @ $802000 (it's a cartridge, after all) | |
596 | */ | |
597 | ||
598 | enum MemType { MM_NOP = 0, MM_RAM, MM_ROM, MM_IO }; | |
599 | ||
600 | // M68K Memory map/handlers | |
601 | uint32_t { | |
602 | { 0x000000, 0x3FFFFF, MM_RAM, jaguarMainRAM }, | |
603 | { 0x800000, 0xDFFEFF, MM_ROM, jaguarMainROM }, | |
604 | // Note that this is really memory mapped I/O region... | |
605 | // { 0xDFFF00, 0xDFFFFF, MM_RAM, cdRAM }, | |
606 | { 0xDFFF00, 0xDFFF03, MM_IO, cdBUTCH }, // base of Butch == interrupt control register, R/W | |
607 | { 0xDFFF04, 0xDFFF07, MM_IO, cdDSCNTRL }, // DSA control register, R/W | |
608 | { 0xDFFF0A, 0xDFFF0B, MM_IO, cdDS_DATA }, // DSA TX/RX data, R/W | |
609 | { 0xDFFF10, 0xDFFF13, MM_IO, cdI2CNTRL }, // i2s bus control register, R/W | |
610 | { 0xDFFF14, 0xDFFF17, MM_IO, cdSBCNTRL }, // CD subcode control register, R/W | |
611 | { 0xDFFF18, 0xDFFF1B, MM_IO, cdSUBDATA }, // Subcode data register A | |
612 | { 0xDFFF1C, 0xDFFF1F, MM_IO, cdSUBDATB }, // Subcode data register B | |
613 | { 0xDFFF20, 0xDFFF23, MM_IO, cdSB_TIME }, // Subcode time and compare enable (D24) | |
614 | { 0xDFFF24, 0xDFFF27, MM_IO, cdFIFO_DATA }, // i2s FIFO data | |
615 | { 0xDFFF28, 0xDFFF2B, MM_IO, cdI2SDAT2 }, // i2s FIFO data (old) | |
616 | { 0xDFFF2C, 0xDFFF2F, MM_IO, cdUNKNOWN }, // Seems to be some sort of I2S interface | |
617 | ||
618 | { 0xE00000, 0xE3FFFF, MM_ROM, jaguarBootROM }, | |
619 | ||
620 | // { 0xF00000, 0xF0FFFF, MM_IO, TOM_REGS_RW }, | |
621 | { 0xF00050, 0xF00051, MM_IO, tomTimerPrescaler }, | |
622 | { 0xF00052, 0xF00053, MM_IO, tomTimerDivider }, | |
623 | { 0xF00400, 0xF005FF, MM_RAM, tomRAM }, // CLUT A&B: How to link these? Write to one writes to the other... | |
624 | { 0xF00600, 0xF007FF, MM_RAM, tomRAM }, // Actually, this is a good approach--just make the reads the same as well | |
625 | //What about LBUF writes??? | |
626 | { 0xF02100, 0xF0211F, MM_IO, GPUWriteByte }, // GPU CONTROL | |
627 | { 0xF02200, 0xF0229F, MM_IO, BlitterWriteByte }, // BLITTER | |
628 | { 0xF03000, 0xF03FFF, MM_RAM, GPUWriteByte }, // GPU RAM | |
629 | ||
630 | { 0xF10000, 0xF1FFFF, MM_IO, JERRY_REGS_RW }, | |
631 | ||
632 | /* | |
633 | EEPROM: | |
634 | { 0xF14001, 0xF14001, MM_IO_RO, eepromFOO } | |
635 | { 0xF14801, 0xF14801, MM_IO_WO, eepromBAR } | |
636 | { 0xF15001, 0xF15001, MM_IO_RW, eepromBAZ } | |
637 | ||
638 | JOYSTICK: | |
639 | { 0xF14000, 0xF14003, MM_IO, joystickFoo } | |
640 | 0 = pad0/1 button values (4 bits each), RO(?) | |
641 | 1 = pad0/1 index value (4 bits each), WO | |
642 | 2 = unused, RO | |
643 | 3 = NTSC/PAL, certain button states, RO | |
644 | ||
645 | JOYSTICK $F14000 Read/Write | |
646 | 15.....8 7......0 | |
647 | Read fedcba98 7654321q f-1 Signals J15 to J1 | |
648 | q Cartridge EEPROM output data | |
649 | Write exxxxxxm 76543210 e 1 = enable J7-J0 outputs | |
650 | 0 = disable J7-J0 outputs | |
651 | x don't care | |
652 | m Audio mute | |
653 | 0 = Audio muted (reset state) | |
654 | 1 = Audio enabled | |
655 | 7-4 J7-J4 outputs (port 2) | |
656 | 3-0 J3-J0 outputs (port 1) | |
657 | JOYBUTS $F14002 Read Only | |
658 | 15.....8 7......0 | |
659 | Read xxxxxxxx rrdv3210 x don't care | |
660 | r Reserved | |
661 | d Reserved | |
662 | v 1 = NTSC Video hardware | |
663 | 0 = PAL Video hardware | |
664 | 3-2 Button inputs B3 & B2 (port 2) | |
665 | 1-0 Button inputs B1 & B0 (port 1) | |
666 | ||
667 | J4 J5 J6 J7 Port 2 B2 B3 J12 J13 J14 J15 | |
668 | J3 J2 J1 J0 Port 1 B0 B1 J8 J9 J10 J11 | |
669 | 0 0 0 0 | |
670 | 0 0 0 1 | |
671 | 0 0 1 0 | |
672 | 0 0 1 1 | |
673 | 0 1 0 0 | |
674 | 0 1 0 1 | |
675 | 0 1 1 0 | |
676 | 0 1 1 1 Row 3 C3 Option # 9 6 3 | |
677 | 1 0 0 0 | |
678 | 1 0 0 1 | |
679 | 1 0 1 0 | |
680 | 1 0 1 1 Row 2 C2 C 0 8 5 2 | |
681 | 1 1 0 0 | |
682 | 1 1 0 1 Row 1 C1 B * 7 4 1 | |
683 | 1 1 1 0 Row 0 Pause A Up Down Left Right | |
684 | 1 1 1 1 | |
685 | ||
686 | 0 bit read in any position means that button is pressed. | |
687 | C3 = C2 = 1 means std. Jag. cntrlr. or nothing attached. | |
688 | */ | |
689 | }; | |
690 | ||
691 | void WriteByte(uint32_t address, uint8_t byte, uint32_t who/*=UNKNOWN*/) | |
692 | { | |
693 | // Not sure, but I think the system only has 24 address bits... | |
694 | address &= 0x00FFFFFF; | |
695 | ||
696 | // RAM ($000000 - $3FFFFF) 4M | |
697 | if (address <= 0x3FFFFF) | |
698 | jaguarMainRAM[address] = byte; | |
699 | // hole ($400000 - $7FFFFF) 4M | |
700 | else if (address <= 0x7FFFFF) | |
701 | ; // Do nothing | |
702 | // GAME ROM ($800000 - $DFFEFF) 6M - 256 bytes | |
703 | else if (address <= 0xDFFEFF) | |
704 | ; // Do nothing | |
705 | // CDROM ($DFFF00 - $DFFFFF) 256 bytes | |
706 | else if (address <= 0xDFFFFF) | |
707 | { | |
708 | cdRAM[address & 0xFF] = byte; | |
709 | #ifdef CDROM_LOG | |
710 | if ((address & 0xFF) < 12 * 4) | |
711 | WriteLog("[%s] ", BReg[(address & 0xFF) / 4]); | |
712 | WriteLog("CDROM: %s writing byte $%02X at $%08X [68K PC=$%08X]\n", whoName[who], data, offset, m68k_get_reg(NULL, M68K_REG_PC)); | |
713 | #endif | |
714 | } | |
715 | // BIOS ROM ($E00000 - $E3FFFF) 256K | |
716 | else if (address <= 0xE3FFFF) | |
717 | ; // Do nothing | |
718 | // hole ($E40000 - $EFFFFF) 768K | |
719 | else if (address <= 0xEFFFFF) | |
720 | ; // Do nothing | |
721 | // TOM ($F00000 - $F0FFFF) 64K | |
722 | else if (address <= 0xF0FFFF) | |
723 | // ; // Do nothing | |
724 | { | |
725 | if (address == 0xF00050) | |
726 | { | |
727 | tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | ((uint16_t)byte << 8); | |
728 | TOMResetPIT(); | |
729 | return; | |
730 | } | |
731 | else if (address == 0xF00051) | |
732 | { | |
733 | tomTimerPrescaler = (tomTimerPrescaler & 0xFF00) | byte; | |
734 | TOMResetPIT(); | |
735 | return; | |
736 | } | |
737 | else if (address == 0xF00052) | |
738 | { | |
739 | tomTimerDivider = (tomTimerDivider & 0x00FF) | ((uint16_t)byte << 8); | |
740 | TOMResetPIT(); | |
741 | return; | |
742 | } | |
743 | else if (address == 0xF00053) | |
744 | { | |
745 | tomTimerDivider = (tomTimerDivider & 0xFF00) | byte; | |
746 | TOMResetPIT(); | |
747 | return; | |
748 | } | |
749 | else if (address >= 0xF00400 && address <= 0xF007FF) // CLUT (A & B) | |
750 | { | |
751 | // Writing to one CLUT writes to the other | |
752 | address &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF) | |
753 | tomRAM[address] = tomRAM[address + 0x200] = byte; | |
754 | return; | |
755 | } | |
756 | //What about LBUF writes??? | |
757 | else if ((address >= 0xF02100) && (address <= 0xF0211F)) // GPU CONTROL | |
758 | { | |
759 | GPUWriteByte(address, byte, who); | |
760 | return; | |
761 | } | |
762 | else if ((address >= 0xF02200) && (address <= 0xF0229F)) // BLITTER | |
763 | { | |
764 | BlitterWriteByte(address, byte, who); | |
765 | return; | |
766 | } | |
767 | else if ((address >= 0xF03000) && (address <= 0xF03FFF)) // GPU RAM | |
768 | { | |
769 | GPUWriteByte(address, byte, who); | |
770 | return; | |
771 | } | |
772 | ||
773 | tomRAM[address & 0x3FFF] = byte; | |
774 | } | |
775 | // JERRY ($F10000 - $F1FFFF) 64K | |
776 | else if (address <= 0xF1FFFF) | |
777 | // ; // Do nothing | |
778 | { | |
779 | #ifdef JERRY_DEBUG | |
780 | WriteLog("jerry: writing byte %.2x at 0x%.6x\n", byte, address); | |
781 | #endif | |
782 | if ((address >= DSP_CONTROL_RAM_BASE) && (address < DSP_CONTROL_RAM_BASE+0x20)) | |
783 | { | |
784 | DSPWriteByte(address, byte, who); | |
785 | return; | |
786 | } | |
787 | else if ((address >= DSP_WORK_RAM_BASE) && (address < DSP_WORK_RAM_BASE+0x2000)) | |
788 | { | |
789 | DSPWriteByte(address, byte, who); | |
790 | return; | |
791 | } | |
792 | // SCLK ($F1A150--8 bits wide) | |
793 | //NOTE: This should be taken care of in DAC... | |
794 | else if ((address >= 0xF1A152) && (address <= 0xF1A153)) | |
795 | { | |
796 | // WriteLog("JERRY: Writing %02X to SCLK...\n", data); | |
797 | if ((address & 0x03) == 2) | |
798 | JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32_t)byte << 8); | |
799 | else | |
800 | JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32_t)byte; | |
801 | ||
802 | JERRYI2SInterruptTimer = -1; | |
803 | #ifndef NEW_TIMER_SYSTEM | |
804 | jerry_i2s_exec(0); | |
805 | #else | |
806 | RemoveCallback(JERRYI2SCallback); | |
807 | JERRYI2SCallback(); | |
808 | #endif | |
809 | // return; | |
810 | } | |
811 | // LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...) | |
812 | else if (address >= 0xF1A148 && address <= 0xF1A157) | |
813 | { | |
814 | DACWriteByte(address, byte, who); | |
815 | return; | |
816 | } | |
817 | else if (address >= 0xF10000 && address <= 0xF10007) | |
818 | { | |
819 | #ifndef NEW_TIMER_SYSTEM | |
820 | switch (address & 0x07) | |
821 | { | |
822 | case 0: | |
823 | JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0x00FF) | (byte << 8); | |
824 | JERRYResetPIT1(); | |
825 | break; | |
826 | case 1: | |
827 | JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0xFF00) | byte; | |
828 | JERRYResetPIT1(); | |
829 | break; | |
830 | case 2: | |
831 | JERRYPIT1Divider = (JERRYPIT1Divider & 0x00FF) | (byte << 8); | |
832 | JERRYResetPIT1(); | |
833 | break; | |
834 | case 3: | |
835 | JERRYPIT1Divider = (JERRYPIT1Divider & 0xFF00) | byte; | |
836 | JERRYResetPIT1(); | |
837 | break; | |
838 | case 4: | |
839 | JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0x00FF) | (byte << 8); | |
840 | JERRYResetPIT2(); | |
841 | break; | |
842 | case 5: | |
843 | JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0xFF00) | byte; | |
844 | JERRYResetPIT2(); | |
845 | break; | |
846 | case 6: | |
847 | JERRYPIT2Divider = (JERRYPIT2Divider & 0x00FF) | (byte << 8); | |
848 | JERRYResetPIT2(); | |
849 | break; | |
850 | case 7: | |
851 | JERRYPIT2Divider = (JERRYPIT2Divider & 0xFF00) | byte; | |
852 | JERRYResetPIT2(); | |
853 | } | |
854 | #else | |
855 | WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", address); | |
856 | #endif | |
857 | return; | |
858 | } | |
859 | /* else if ((offset >= 0xF10010) && (offset <= 0xF10015)) | |
860 | { | |
861 | clock_byte_write(offset, byte); | |
862 | return; | |
863 | }//*/ | |
864 | // JERRY -> 68K interrupt enables/latches (need to be handled!) | |
865 | else if (address >= 0xF10020 && address <= 0xF10023) | |
866 | { | |
867 | WriteLog("JERRY: (68K int en/lat - Unhandled!) Tried to write $%02X to $%08X!\n", byte, address); | |
868 | } | |
869 | /* else if ((offset >= 0xF17C00) && (offset <= 0xF17C01)) | |
870 | { | |
871 | anajoy_byte_write(offset, byte); | |
872 | return; | |
873 | }*/ | |
874 | else if ((address >= 0xF14000) && (address <= 0xF14003)) | |
875 | { | |
876 | JoystickWriteByte(address, byte); | |
877 | EepromWriteByte(address, byte); | |
878 | return; | |
879 | } | |
880 | else if ((address >= 0xF14004) && (address <= 0xF1A0FF)) | |
881 | { | |
882 | EepromWriteByte(address, byte); | |
883 | return; | |
884 | } | |
885 | //Need to protect write attempts to Wavetable ROM (F1D000-FFF) | |
886 | else if (address >= 0xF1D000 && address <= 0xF1DFFF) | |
887 | return; | |
888 | ||
889 | jerryRAM[address & 0xFFFF] = byte; | |
890 | } | |
891 | // hole ($F20000 - $FFFFFF) 1M - 128K | |
892 | else | |
893 | ; // Do nothing | |
894 | } | |
895 | ||
896 | ||
897 | void WriteWord(uint32_t adddress, uint16_t word) | |
898 | { | |
899 | } | |
900 | ||
901 | ||
902 | void WriteDWord(uint32_t adddress, uint32_t dword) | |
903 | { | |
904 | } | |
905 | ||
906 | ||
907 | uint8_t ReadByte(uint32_t adddress) | |
908 | { | |
909 | } | |
910 | ||
911 | ||
912 | uint16_t ReadWord(uint32_t adddress) | |
913 | { | |
914 | } | |
915 | ||
916 | ||
917 | uint32_t ReadDWord(uint32_t adddress) | |
918 | { | |
919 | } | |
920 | #endif | |
921 | ||
922 | ||
923 | void ShowM68KContext(void) | |
924 | { | |
925 | printf("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); | |
926 | ||
927 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) | |
928 | { | |
929 | printf("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
930 | ||
931 | if (i == M68K_REG_D3 || i == M68K_REG_D7) | |
932 | printf("\n"); | |
933 | } | |
934 | ||
935 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) | |
936 | { | |
937 | printf("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
938 | ||
939 | if (i == M68K_REG_A3 || i == M68K_REG_A7) | |
940 | printf("\n"); | |
941 | } | |
942 | ||
943 | uint32_t currpc = m68k_get_reg(NULL, M68K_REG_PC); | |
944 | uint32_t disPC = currpc - 30; | |
945 | char buffer[128]; | |
946 | ||
947 | do | |
948 | { | |
949 | uint32_t oldpc = disPC; | |
950 | disPC += m68k_disassemble(buffer, disPC, 0, 1); | |
951 | printf("%s%08X: %s\n", (oldpc == currpc ? ">" : " "), oldpc, buffer); | |
952 | } | |
953 | while (disPC < (currpc + 10)); | |
954 | } | |
955 | ||
956 | ||
957 | // | |
958 | // Custom UAE 68000 read/write/IRQ functions | |
959 | // | |
960 | ||
961 | #if 0 | |
962 | IRQs: | |
963 | =-=-= | |
964 | ||
965 | IPL Name Vector Control | |
966 | ---------+---------------+---------------+--------------- | |
967 | 2 VBLANK IRQ $100 INT1 bit #0 | |
968 | 2 GPU IRQ $100 INT1 bit #1 | |
969 | 2 HBLANK IRQ $100 INT1 bit #2 | |
970 | 2 Timer IRQ $100 INT1 bit #3 | |
971 | ||
972 | Note: Both timer interrupts (JPIT && PIT) are on the same INT1 bit. | |
973 | and are therefore indistinguishable. | |
974 | ||
975 | A typical way to install a LEVEL2 handler for the 68000 would be | |
976 | something like this, you gotta supply "last_line" and "handler". | |
977 | Note that the interrupt is auto vectored thru $100 (not $68) | |
978 | ||
979 | ||
980 | V_AUTO = $100 | |
981 | VI = $F004E | |
982 | INT1 = $F00E0 | |
983 | INT2 = $F00E2 | |
984 | ||
985 | IRQS_HANDLED=$909 ;; VBLANK and TIMER | |
986 | ||
987 | move.w #$2700,sr ;; no IRQs please | |
988 | move.l #handler,V_AUTO ;; install our routine | |
989 | ||
990 | move.w #last_line,VI ;; scanline where IRQ should occur | |
991 | ;; should be 'odd' BTW | |
992 | move.w #IRQS_HANDLE&$FF,INT1 ;; enable VBLANK + TIMER | |
993 | move.w #$2100,sr ;; enable IRQs on the 68K | |
994 | ... | |
995 | ||
996 | handler: | |
997 | move.w d0,-(a7) | |
998 | move.w INT1,d0 | |
999 | btst.b #0,d0 | |
1000 | bne.b .no_blank | |
1001 | ||
1002 | ... | |
1003 | ||
1004 | .no_blank: | |
1005 | btst.b #3,d0 | |
1006 | beq.b .no_timer | |
1007 | ||
1008 | ... | |
1009 | ||
1010 | .no_timer: | |
1011 | move.w #IRQS_HANDLED,INT1 ; clear latch, keep IRQ alive | |
1012 | move.w #0,INT2 ; let GPU run again | |
1013 | move.w (a7)+,d0 | |
1014 | rte | |
1015 | ||
1016 | As you can see, if you have multiple INT1 interrupts coming in, | |
1017 | you need to check the lower byte of INT1, to see which interrupt | |
1018 | happened. | |
1019 | #endif | |
1020 | int irq_ack_handler(int level) | |
1021 | { | |
1022 | #ifdef CPU_DEBUG_TRACING | |
1023 | if (startM68KTracing) | |
1024 | { | |
1025 | WriteLog("irq_ack_handler: M68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); | |
1026 | } | |
1027 | #endif | |
1028 | ||
1029 | // Tracing the IPL lines on the Jaguar schematic yields the following: | |
1030 | // IPL1 is connected to INTL on TOM (OUT to 68K) | |
1031 | // IPL0-2 are also tied to Vcc via 4.7K resistors! | |
1032 | // (DINT on TOM goes into DINT on JERRY (IN Tom from Jerry)) | |
1033 | // There doesn't seem to be any other path to IPL0 or 2 on the schematic, | |
1034 | // which means that *all* IRQs to the 68K are routed thru TOM at level 2. | |
1035 | // Which means they're all maskable. | |
1036 | ||
1037 | // The GPU/DSP/etc are probably *not* issuing an NMI, but it seems to work | |
1038 | // OK... | |
1039 | // They aren't, and this causes problems with a, err, specific ROM. :-D | |
1040 | ||
1041 | if (level == 2) | |
1042 | { | |
1043 | m68k_set_irq(0); // Clear the IRQ (NOTE: Without this, the BIOS fails)... | |
1044 | return 64; // Set user interrupt #0 | |
1045 | } | |
1046 | ||
1047 | return M68K_INT_ACK_AUTOVECTOR; | |
1048 | } | |
1049 | ||
1050 | ||
1051 | #if 0 | |
1052 | void M68K_Debughalt(void) | |
1053 | { | |
1054 | M68KDebugHalt(); | |
1055 | } | |
1056 | #endif | |
1057 | ||
1058 | ||
1081a838 JPM |
1059 | // M68000 breakpoints initialisations |
1060 | void m68k_brk_init(void) | |
1061 | { | |
1062 | brkNbr = 0; | |
1063 | brkInfo = NULL; | |
1064 | } | |
1065 | ||
1066 | ||
1067 | // Reset the M68000 breakpoints structures | |
1068 | void m68k_brk_reset(void) | |
1069 | { | |
1070 | // Reset the breakpoints | |
1071 | free(brkInfo); | |
1072 | brkInfo = NULL; | |
1073 | brkNbr = 0; | |
1074 | } | |
1075 | ||
1076 | ||
1077 | // Delete a M68000 breakpoint (starting from 1) | |
1078 | void m68k_brk_del(unsigned int NumBrk) | |
1079 | { | |
1080 | // Remove the breakpoint | |
1081 | memset((void *)(brkInfo + (NumBrk - 1)), 0, sizeof(S_BrkInfo)); | |
1082 | } | |
1083 | ||
1084 | ||
1085 | // Add a M68000 breakpoint | |
1086 | // return true if breakpoint has been added, and false if breakpoint already exists | |
1087 | unsigned int m68k_brk_add(void *PtrInfo) | |
1088 | { | |
1089 | S_BrkInfo *Ptr = NULL; | |
1090 | ||
1091 | // Check if breakpoint already exists | |
1092 | for (size_t i = 0; i < brkNbr; i++) | |
1093 | { | |
1094 | if (brkInfo[i].Used) | |
1095 | { | |
1096 | if (brkInfo[i].Adr == ((S_BrkInfo *)PtrInfo)->Adr) | |
1097 | { | |
1098 | return false; | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | // Look for an available breakpoint | |
1104 | for (size_t i = 0; i < brkNbr, Ptr; i++) | |
1105 | { | |
1106 | if (!brkInfo[i].Used) | |
1107 | { | |
1108 | Ptr = &brkInfo[i]; | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | // Add a breakpoint | |
1113 | if (!Ptr) | |
1114 | { | |
1115 | brkInfo = (S_BrkInfo *)realloc(brkInfo, (++brkNbr * sizeof(S_BrkInfo))); | |
1116 | Ptr = &brkInfo[brkNbr - 1]; | |
1117 | } | |
1118 | ||
1119 | // Transfert the breakpoint information and init the activities | |
1120 | memcpy((void *)Ptr, PtrInfo, sizeof(S_BrkInfo)); | |
1121 | Ptr->HitCounts = 0; | |
1122 | return (Ptr->Active = Ptr->Used = true); | |
1123 | } | |
1124 | ||
1125 | ||
1126 | // Check if breakpoint has been reached | |
1127 | unsigned int m68k_brk_check(unsigned int adr) | |
1128 | { | |
1129 | // Check if BPM has been reached | |
1130 | if ((adr == bpmAddress1) && bpmActive) | |
1131 | { | |
1132 | bpmHitCounts++; | |
1133 | return true; | |
1134 | } | |
1135 | else | |
1136 | { | |
1137 | // Check user breakpoints | |
1138 | for (size_t i = 0; i < brkNbr; i++) | |
1139 | { | |
1140 | if (brkInfo[i].Used && brkInfo[i].Active) | |
1141 | { | |
1142 | if (brkInfo[i].Adr == adr) | |
1143 | { | |
1144 | brkInfo[i].HitCounts++; | |
1145 | return true; | |
1146 | } | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | // No breakpoint found | |
1152 | return false; | |
1153 | } | |
1154 | ||
1155 | ||
1156 | // Disable the M68000 breakpoints | |
1157 | void m68k_brk_disable(void) | |
1158 | { | |
1159 | // reset active for the breakpoints | |
1160 | for (size_t i = 0; i < brkNbr; i++) | |
1161 | { | |
1162 | brkInfo[i].Active = 0; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | ||
1167 | // Reset the M68000 breakpoints | |
1168 | void m68k_brk_hitcounts_reset(void) | |
1169 | { | |
1170 | // reset hit counts for the breakpoints | |
1171 | for (size_t i = 0; i < brkNbr; i++) | |
1172 | { | |
1173 | brkInfo[i].HitCounts = 0; | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | ||
1178 | // Close the M68000 breakpoints structures | |
1179 | void m68k_brk_close(void) | |
1180 | { | |
1181 | free(brkInfo); | |
1182 | } | |
1183 | ||
1184 | ||
1185 | // Read 1 byte from address | |
1186 | // Check if address reaches a breakpoint | |
cf76e892 JPM |
1187 | unsigned int m68k_read_memory_8(unsigned int address) |
1188 | { | |
1189 | #ifdef ALPINE_FUNCTIONS | |
1190 | // Check if breakpoint on memory is active, and deal with it | |
1081a838 | 1191 | if (!startM68KTracing && m68k_brk_check(address)) |
a8c13b4d | 1192 | { |
cf76e892 | 1193 | M68KDebugHalt(); |
a8c13b4d | 1194 | } |
cf76e892 JPM |
1195 | #endif |
1196 | ||
1197 | // Musashi does this automagically for you, UAE core does not :-P | |
1198 | address &= 0x00FFFFFF; | |
1199 | #ifdef CPU_DEBUG_MEMORY | |
1200 | // Note that the Jaguar only has 2M of RAM, not 4! | |
1201 | if ((address >= 0x000000) && (address <= 0x1FFFFF)) | |
1202 | { | |
1203 | if (startMemLog) | |
1204 | readMem[address] = 1; | |
1205 | } | |
1206 | #endif | |
1207 | //WriteLog("[RM8] Addr: %08X\n", address); | |
1208 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. | |
1209 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 | |
1210 | || address == 0x1AF05E) | |
1211 | WriteLog("[RM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, jaguar_mainRam[address]);//*/ | |
1212 | #ifndef USE_NEW_MMU | |
1213 | unsigned int retVal = 0; | |
1214 | ||
1215 | // Note that the Jaguar only has 2M of RAM, not 4! | |
1216 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 1))) | |
a8c13b4d | 1217 | { |
cf76e892 | 1218 | retVal = jaguarMainRAM[address]; |
a8c13b4d | 1219 | } |
cf76e892 | 1220 | // else if ((address >= 0x800000) && (address <= 0xDFFFFF)) |
cf76e892 | 1221 | else |
a8c13b4d JPM |
1222 | { |
1223 | if ((address >= 0x800000) && (address <= 0xDFFEFF)) | |
1224 | { | |
1225 | retVal = jaguarMainROM[address - 0x800000]; | |
1226 | } | |
1227 | else | |
1228 | { | |
1229 | if ((address >= 0xE00000) && (address <= 0xE3FFFF)) | |
1230 | { | |
1231 | // retVal = jaguarBootROM[address - 0xE00000]; | |
1232 | // retVal = jaguarDevBootROM1[address - 0xE00000]; | |
1233 | retVal = jagMemSpace[address]; | |
1234 | } | |
1235 | else | |
1236 | { | |
1237 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) | |
1238 | { | |
1239 | retVal = CDROMReadByte(address); | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | if ((address >= 0xF00000) && (address <= 0xF0FFFF)) | |
1244 | { | |
1245 | retVal = TOMReadByte(address, M68K); | |
1246 | } | |
1247 | else | |
1248 | { | |
1249 | if ((address >= 0xF10000) && (address <= 0xF1FFFF)) | |
1250 | { | |
1251 | retVal = JERRYReadByte(address, M68K); | |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | retVal = jaguar_unknown_readbyte(address, M68K); | |
1256 | } | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | } | |
1261 | } | |
cf76e892 JPM |
1262 | |
1263 | //if (address >= 0x2800 && address <= 0x281F) | |
1264 | // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1265 | //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) | |
1266 | // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1267 | return retVal; | |
1268 | #else | |
1269 | return MMURead8(address, M68K); | |
1270 | #endif | |
1271 | } | |
1272 | ||
1273 | ||
1274 | /* | |
1275 | void gpu_dump_disassembly(void); | |
1276 | void gpu_dump_registers(void); | |
1277 | */ | |
1278 | ||
1279 | unsigned int m68k_read_memory_16(unsigned int address) | |
1280 | { | |
1281 | #ifdef ALPINE_FUNCTIONS | |
1282 | // Check if breakpoint on memory is active, and deal with it | |
1081a838 | 1283 | if (!startM68KTracing && m68k_brk_check(address)) |
cf76e892 JPM |
1284 | { |
1285 | M68KDebugHalt(); | |
1286 | } | |
1287 | #endif | |
1288 | ||
1289 | // Musashi does this automagically for you, UAE core does not :-P | |
1290 | address &= 0x00FFFFFF; | |
1291 | #ifdef CPU_DEBUG_MEMORY | |
1292 | /* if ((address >= 0x000000) && (address <= 0x3FFFFE)) | |
1293 | { | |
1294 | if (startMemLog) | |
1295 | readMem[address] = 1, readMem[address + 1] = 1; | |
1296 | }//*/ | |
1297 | /* if (effect_start && (address >= 0x8064FC && address <= 0x806501)) | |
1298 | { | |
1299 | return 0x4E71; // NOP | |
1300 | } | |
1301 | if (effect_start2 && (address >= 0x806502 && address <= 0x806507)) | |
1302 | { | |
1303 | return 0x4E71; // NOP | |
1304 | } | |
1305 | if (effect_start3 && (address >= 0x806512 && address <= 0x806517)) | |
1306 | { | |
1307 | return 0x4E71; // NOP | |
1308 | } | |
1309 | if (effect_start4 && (address >= 0x806524 && address <= 0x806527)) | |
1310 | { | |
1311 | return 0x4E71; // NOP | |
1312 | } | |
1313 | if (effect_start5 && (address >= 0x80653E && address <= 0x806543)) //Collision detection! | |
1314 | { | |
1315 | return 0x4E71; // NOP | |
1316 | } | |
1317 | if (effect_start6 && (address >= 0x806544 && address <= 0x806547)) | |
1318 | { | |
1319 | return 0x4E71; // NOP | |
1320 | }//*/ | |
1321 | #endif | |
1322 | //WriteLog("[RM16] Addr: %08X\n", address); | |
1323 | /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005FBA) | |
1324 | // for(int i=0; i<10000; i++) | |
1325 | WriteLog("[M68K] In routine #6!\n");//*/ | |
1326 | //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00006696) // GPU Program #4 | |
1327 | //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005B3C) // GPU Program #2 | |
1328 | /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005BA8) // GPU Program #3 | |
1329 | { | |
1330 | WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address)); | |
1331 | gpu_dump_registers(); | |
1332 | gpu_dump_disassembly(); | |
1333 | // for(int i=0; i<10000; i++) | |
1334 | // WriteLog("[M68K] About to run GPU!\n"); | |
1335 | }//*/ | |
1336 | //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); | |
1337 | /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x00006696 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x000066A8) | |
1338 | { | |
1339 | if (address == 0x000066A0) | |
1340 | { | |
1341 | gpu_dump_registers(); | |
1342 | gpu_dump_disassembly(); | |
1343 | } | |
1344 | for(int i=0; i<10000; i++) | |
1345 | WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address)); | |
1346 | }//*/ | |
1347 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. | |
1348 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 | |
1349 | || address == 0x1AF05E) | |
1350 | WriteLog("[RM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, GET16(jaguar_mainRam, address));//*/ | |
1351 | #ifndef USE_NEW_MMU | |
1352 | unsigned int retVal = 0; | |
1353 | ||
1354 | // Note that the Jaguar only has 2M of RAM, not 4! | |
1355 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 2))) | |
a8c13b4d JPM |
1356 | { |
1357 | // retVal = (jaguar_mainRam[address] << 8) | jaguar_mainRam[address+1]; | |
cf76e892 | 1358 | retVal = GET16(jaguarMainRAM, address); |
a8c13b4d | 1359 | } |
cf76e892 | 1360 | // else if ((address >= 0x800000) && (address <= 0xDFFFFE)) |
a8c13b4d | 1361 | else |
cf76e892 | 1362 | { |
a8c13b4d | 1363 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) |
cf76e892 | 1364 | { |
a8c13b4d JPM |
1365 | // Memory Track reading... |
1366 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) | |
1367 | { | |
1368 | retVal = MTReadWord(address); | |
1369 | } | |
1370 | else | |
1371 | { | |
1372 | retVal = (jaguarMainROM[address - 0x800000] << 8) | jaguarMainROM[address - 0x800000 + 1]; | |
1373 | } | |
cf76e892 JPM |
1374 | } |
1375 | else | |
a8c13b4d JPM |
1376 | { |
1377 | if ((address >= 0xE00000) && (address <= 0xE3FFFE)) | |
1378 | { | |
1379 | // retVal = (jaguarBootROM[address - 0xE00000] << 8) | jaguarBootROM[address - 0xE00000 + 1]; | |
1380 | // retVal = (jaguarDevBootROM1[address - 0xE00000] << 8) | jaguarDevBootROM1[address - 0xE00000 + 1]; | |
1381 | retVal = (jagMemSpace[address] << 8) | jagMemSpace[address + 1]; | |
1382 | } | |
1383 | else | |
1384 | { | |
1385 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) | |
1386 | { | |
1387 | retVal = CDROMReadWord(address, M68K); | |
1388 | } | |
1389 | else | |
1390 | { | |
1391 | if ((address >= 0xF00000) && (address <= 0xF0FFFE)) | |
1392 | { | |
1393 | retVal = TOMReadWord(address, M68K); | |
1394 | } | |
1395 | else | |
1396 | { | |
1397 | if ((address >= 0xF10000) && (address <= 0xF1FFFE)) | |
1398 | { | |
1399 | retVal = JERRYReadWord(address, M68K); | |
1400 | } | |
1401 | else | |
1402 | { | |
1403 | retVal = jaguar_unknown_readword(address, M68K); | |
1404 | } | |
1405 | } | |
1406 | } | |
1407 | } | |
1408 | } | |
cf76e892 | 1409 | } |
cf76e892 JPM |
1410 | |
1411 | //if (address >= 0xF1B000 && address <= 0xF1CFFF) | |
1412 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1413 | //if (address >= 0x2800 && address <= 0x281F) | |
1414 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1415 | //$8B3AE -> Transferred from $F1C010 | |
1416 | //$8B5E4 -> Only +1 read at $808AA | |
1417 | //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) | |
1418 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1419 | return retVal; | |
1420 | #else | |
1421 | return MMURead16(address, M68K); | |
1422 | #endif | |
1423 | } | |
1424 | ||
1425 | ||
f6eb33e6 JPM |
1426 | // Alert message in case of exception vector request |
1427 | bool m68k_read_exception_vector(unsigned int address, char *text) | |
1428 | { | |
1429 | QString msg; | |
1430 | QMessageBox msgBox; | |
1431 | ||
0cbc132e JPM |
1432 | #if 0 |
1433 | msg.sprintf("68000 exception\n%s at $%06x", text, pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF]); | |
1434 | #else | |
1435 | msg.sprintf("68000 exception\n$%06x: %s", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], text); | |
1436 | #endif | |
f6eb33e6 JPM |
1437 | msgBox.setText(msg); |
1438 | msgBox.setStandardButtons(QMessageBox::Abort); | |
1439 | msgBox.setDefaultButton(QMessageBox::Abort); | |
1440 | msgBox.exec(); | |
1441 | return M68KDebugHalt(); | |
1442 | } | |
1443 | ||
1444 | ||
1445 | // Read 4 bytes from memory | |
cf76e892 JPM |
1446 | unsigned int m68k_read_memory_32(unsigned int address) |
1447 | { | |
1448 | #ifdef ALPINE_FUNCTIONS | |
1449 | // Check if breakpoint on memory is active, and deal with it | |
1081a838 | 1450 | if (!startM68KTracing && m68k_brk_check(address)) |
a8c13b4d | 1451 | { |
cf76e892 | 1452 | M68KDebugHalt(); |
a8c13b4d | 1453 | } |
cf76e892 JPM |
1454 | #endif |
1455 | ||
1456 | // Musashi does this automagically for you, UAE core does not :-P | |
1457 | address &= 0x00FFFFFF; | |
1458 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. | |
1459 | /* if (address == 0x51136 || address == 0xFB074 || address == 0x1AF05E) | |
1460 | 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));//*/ | |
1461 | ||
1462 | //WriteLog("--> [RM32]\n"); | |
1463 | #ifndef USE_NEW_MMU | |
f6eb33e6 | 1464 | //uint32_t retVal = 0; |
cf76e892 | 1465 | |
f6eb33e6 | 1466 | // check exception vectors access |
28c2bdc6 | 1467 | if (vjs.allowM68KExceptionCatch && (address >= 0x8) && (address <= 0x7c)) |
cf76e892 | 1468 | { |
f6eb33e6 | 1469 | switch (address) |
a8c13b4d | 1470 | { |
28c2bdc6 JPM |
1471 | case 0x08: |
1472 | m68k_read_exception_vector(address, "Bus error"); | |
1473 | break; | |
1474 | ||
0cbc132e JPM |
1475 | case 0x0c: |
1476 | m68k_read_exception_vector(address, "Address error"); | |
1477 | break; | |
1478 | ||
f6eb33e6 JPM |
1479 | case 0x10: |
1480 | m68k_read_exception_vector(address, "Illegal instruction"); | |
1481 | break; | |
0029c507 JPM |
1482 | |
1483 | case 0x2c: | |
1484 | m68k_read_exception_vector(address, "Unimplemented instruction"); | |
1485 | break; | |
1486 | ||
1487 | default: | |
1488 | m68k_read_exception_vector(address, "Exception not referenced"); | |
1489 | break; | |
a8c13b4d | 1490 | } |
2a13a691 JPM |
1491 | |
1492 | frameDone = true; // Hack to avoid the freeze of the emulator | |
f6eb33e6 JPM |
1493 | } |
1494 | else | |
1495 | { | |
1496 | // check ROM or Memory Track access | |
1497 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) | |
a8c13b4d | 1498 | { |
f6eb33e6 JPM |
1499 | // Memory Track reading... |
1500 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) | |
1501 | { | |
1502 | return MTReadLong(address); | |
1503 | } | |
1504 | else | |
1505 | { | |
1506 | return GET32(jaguarMainROM, address - 0x800000); | |
1507 | } | |
a8c13b4d | 1508 | } |
cf76e892 JPM |
1509 | } |
1510 | ||
f6eb33e6 | 1511 | // return value from memory |
cf76e892 JPM |
1512 | return (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2); |
1513 | #else | |
1514 | return MMURead32(address, M68K); | |
1515 | #endif | |
1516 | } | |
1517 | ||
1518 | ||
f04df4f1 | 1519 | // Alert message in case of writing to unknown memory location |
a8c13b4d JPM |
1520 | bool m68k_write_unknown_alert(unsigned int address, char *bits, unsigned int value) |
1521 | { | |
1522 | QString msg; | |
1523 | QMessageBox msgBox; | |
1524 | ||
1525 | msg.sprintf("$%06x: Writing at this unknown memory location $%06x with a (%s bits) value of $%0x", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], address, bits, value); | |
1526 | msgBox.setText(msg); | |
f04df4f1 JPM |
1527 | msgBox.setStandardButtons(QMessageBox::Abort); |
1528 | msgBox.setDefaultButton(QMessageBox::Abort); | |
a8c13b4d JPM |
1529 | msgBox.exec(); |
1530 | return M68KDebugHalt(); | |
1531 | } | |
1532 | ||
1533 | ||
f04df4f1 | 1534 | // Alert message in case of writing to cartridge/ROM memory location |
a8c13b4d | 1535 | bool m68k_write_cartridge_alert(unsigned int address, char *bits, unsigned int value) |
eb20f274 | 1536 | { |
f04df4f1 JPM |
1537 | if (!M68KDebugHaltStatus()) |
1538 | { | |
1539 | QString msg; | |
1540 | QMessageBox msgBox; | |
a8c13b4d | 1541 | |
f04df4f1 JPM |
1542 | msg.sprintf("$%06x: Writing at this ROM cartridge location $%06x with a (%s bits) value of $%0x", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], address, bits, value); |
1543 | msgBox.setText(msg); | |
eb20f274 | 1544 | |
eb20f274 | 1545 | msgBox.setInformativeText("Do you want to continue?"); |
f04df4f1 JPM |
1546 | msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No); |
1547 | msgBox.setDefaultButton(QMessageBox::No); | |
eb20f274 | 1548 | |
f04df4f1 | 1549 | int retVal = msgBox.exec(); |
eb20f274 | 1550 | |
f04df4f1 JPM |
1551 | if (retVal == QMessageBox::Yes) |
1552 | { | |
1553 | return false; | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | return M68KDebugHalt(); | |
1558 | } | |
eb20f274 JPM |
1559 | } |
1560 | else | |
1561 | { | |
f04df4f1 | 1562 | return 1; |
eb20f274 JPM |
1563 | } |
1564 | } | |
1565 | ||
1566 | ||
f04df4f1 JPM |
1567 | // Check memory write location |
1568 | // BPM & cartridge/ROM detections | |
a8c13b4d JPM |
1569 | bool m68k_write_memory_check(unsigned int address, char *bits, unsigned int value) |
1570 | { | |
f04df4f1 JPM |
1571 | unsigned int address1; |
1572 | ||
a8c13b4d JPM |
1573 | #ifdef ALPINE_FUNCTIONS |
1574 | // Check if breakpoint on memory is active, and deal with it | |
f04df4f1 | 1575 | if (!M68KDebugHaltStatus() && bpmActive && (address == bpmAddress1)) |
a8c13b4d JPM |
1576 | { |
1577 | return M68KDebugHalt(); | |
1578 | } | |
1579 | else | |
1580 | #endif | |
1581 | { | |
1582 | // Rom writing authorisation detection | |
f04df4f1 | 1583 | if (!vjs.allowWritesToROM) |
a8c13b4d | 1584 | { |
f04df4f1 JPM |
1585 | // Calcul the end address |
1586 | if (strstr(bits, "32")) | |
1587 | { | |
1588 | address1 = address + 3; | |
1589 | } | |
1590 | else | |
1591 | { | |
1592 | if (strstr(bits, "16")) | |
1593 | { | |
1594 | address1 = address + 1; | |
1595 | } | |
1596 | else | |
1597 | { | |
1598 | address1 = address; | |
1599 | } | |
1600 | } | |
1601 | ||
1602 | // Rom writing detection | |
1603 | if ((address >= 0x800000) && (address1 < 0xDFFF00)) | |
1604 | { | |
1605 | return m68k_write_cartridge_alert(address, bits, value); | |
1606 | } | |
a8c13b4d | 1607 | } |
f04df4f1 JPM |
1608 | |
1609 | return false; | |
a8c13b4d JPM |
1610 | } |
1611 | } | |
1612 | ||
1613 | ||
f04df4f1 | 1614 | // Memory write location on 8 bits |
cf76e892 JPM |
1615 | void m68k_write_memory_8(unsigned int address, unsigned int value) |
1616 | { | |
f04df4f1 JPM |
1617 | // Check memory write location on 8 bits |
1618 | if (!m68k_write_memory_check(address, "8", value)) | |
eb20f274 | 1619 | { |
f04df4f1 JPM |
1620 | // Musashi does this automagically for you, UAE core does not :-P |
1621 | //address &= 0x00FFFFFF; | |
cf76e892 JPM |
1622 | #ifdef CPU_DEBUG_MEMORY |
1623 | // Note that the Jaguar only has 2M of RAM, not 4! | |
f04df4f1 | 1624 | if ((address >= 0x000000) && (address <= 0x1FFFFF)) |
cf76e892 | 1625 | { |
f04df4f1 JPM |
1626 | if (startMemLog) |
1627 | { | |
1628 | if (value > writeMemMax[address]) | |
1629 | writeMemMax[address] = value; | |
1630 | if (value < writeMemMin[address]) | |
1631 | writeMemMin[address] = value; | |
1632 | } | |
cf76e892 | 1633 | } |
cf76e892 | 1634 | #endif |
f04df4f1 JPM |
1635 | /*if (address == 0x4E00) |
1636 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1637 | //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) | |
1638 | // WriteLog("M68K: Writing %02X at %08X\n", value, address); | |
1639 | //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); | |
1640 | /*if (effect_start) | |
1641 | if (address >= 0x18FA70 && address < (0x18FA70 + 8000)) | |
1642 | WriteLog("M68K: Byte %02X written at %08X by 68K\n", value, address);//*/ | |
1643 | //$53D0 | |
1644 | /*if (address >= 0x53D0 && address <= 0x53FF) | |
1645 | printf("M68K: Writing byte $%02X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1646 | //Testing AvP on UAE core... | |
1647 | //000075A0: FFFFF80E B6320220 (BITMAP) | |
1648 | /*if (address == 0x75A0 && value == 0xFF) | |
1649 | printf("M68K: (8) Tripwire hit...\n");//*/ | |
cf76e892 JPM |
1650 | |
1651 | #ifndef USE_NEW_MMU | |
f04df4f1 JPM |
1652 | // Note that the Jaguar only has 2M of RAM, not 4! |
1653 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 1))) | |
a8c13b4d | 1654 | { |
f04df4f1 | 1655 | jaguarMainRAM[address] = value; |
a8c13b4d JPM |
1656 | } |
1657 | else | |
1658 | { | |
f04df4f1 | 1659 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) |
a8c13b4d | 1660 | { |
f04df4f1 | 1661 | CDROMWriteByte(address, value, M68K); |
a8c13b4d JPM |
1662 | } |
1663 | else | |
1664 | { | |
f04df4f1 | 1665 | if ((address >= 0xF00000) && (address <= 0xF0FFFF)) |
a8c13b4d | 1666 | { |
f04df4f1 | 1667 | TOMWriteByte(address, value, M68K); |
a8c13b4d JPM |
1668 | } |
1669 | else | |
1670 | { | |
f04df4f1 JPM |
1671 | if ((address >= 0xF10000) && (address <= 0xF1FFFF)) |
1672 | { | |
1673 | JERRYWriteByte(address, value, M68K); | |
1674 | } | |
1675 | else | |
1676 | { | |
1677 | if ((address >= 0x800000) && (address <= 0xDFFEFF)) | |
1678 | { | |
1679 | jagMemSpace[address] = (uint8_t)value; | |
1680 | } | |
1681 | else | |
1682 | { | |
1683 | jaguar_unknown_writebyte(address, value, M68K); | |
1684 | } | |
1685 | } | |
a8c13b4d JPM |
1686 | } |
1687 | } | |
1688 | } | |
cf76e892 | 1689 | #else |
f04df4f1 | 1690 | MMUWrite8(address, value, M68K); |
cf76e892 | 1691 | #endif |
f04df4f1 | 1692 | } |
cf76e892 JPM |
1693 | } |
1694 | ||
1695 | ||
f04df4f1 | 1696 | // Memory write location on 16 bits |
cf76e892 JPM |
1697 | void m68k_write_memory_16(unsigned int address, unsigned int value) |
1698 | { | |
f04df4f1 JPM |
1699 | // Check memory write location on 16 bits |
1700 | if (!m68k_write_memory_check(address, "16", value)) | |
a8c13b4d | 1701 | { |
f04df4f1 JPM |
1702 | // Musashi does this automagically for you, UAE core does not :-P |
1703 | //address &= 0x00FFFFFF; | |
cf76e892 JPM |
1704 | #ifdef CPU_DEBUG_MEMORY |
1705 | // Note that the Jaguar only has 2M of RAM, not 4! | |
f04df4f1 | 1706 | if ((address >= 0x000000) && (address <= 0x1FFFFE)) |
cf76e892 | 1707 | { |
f04df4f1 JPM |
1708 | if (startMemLog) |
1709 | { | |
1710 | uint8_t hi = value >> 8, lo = value & 0xFF; | |
cf76e892 | 1711 | |
f04df4f1 JPM |
1712 | if (hi > writeMemMax[address]) |
1713 | writeMemMax[address] = hi; | |
1714 | if (hi < writeMemMin[address]) | |
1715 | writeMemMin[address] = hi; | |
cf76e892 | 1716 | |
f04df4f1 JPM |
1717 | if (lo > writeMemMax[address + 1]) |
1718 | writeMemMax[address + 1] = lo; | |
1719 | if (lo < writeMemMin[address + 1]) | |
1720 | writeMemMin[address + 1] = lo; | |
1721 | } | |
cf76e892 | 1722 | } |
cf76e892 | 1723 | #endif |
f04df4f1 JPM |
1724 | /*if (address == 0x4E00) |
1725 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1726 | //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) | |
1727 | // WriteLog("M68K: Writing %04X at %08X\n", value, address); | |
1728 | //WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); | |
1729 | //if (address >= 0xF02200 && address <= 0xF0229F) | |
1730 | // WriteLog("M68K: Writing to blitter --> %04X at %08X\n", value, address); | |
1731 | //if (address >= 0x0E75D0 && address <= 0x0E75E7) | |
1732 | // WriteLog("M68K: Writing %04X at %08X, M68K PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC)); | |
1733 | /*extern uint32_t totalFrames; | |
1734 | if (address == 0xF02114) | |
1735 | WriteLog("M68K: Writing to GPU_CTRL (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC)); | |
1736 | if (address == 0xF02110) | |
1737 | WriteLog("M68K: Writing to GPU_PC (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1738 | //if (address >= 0xF03B00 && address <= 0xF03DFF) | |
1739 | // WriteLog("M68K: Writing %04X to %08X...\n", value, address); | |
1740 | ||
1741 | /*if (address == 0x0100)//64*4) | |
1742 | WriteLog("M68K: Wrote word to VI vector value %04X...\n", value);//*/ | |
1743 | /*if (effect_start) | |
1744 | if (address >= 0x18FA70 && address < (0x18FA70 + 8000)) | |
1745 | WriteLog("M68K: Word %04X written at %08X by 68K\n", value, address);//*/ | |
1746 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 | |
1747 | || address == 0x1AF05E) | |
1748 | WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ | |
1749 | //$53D0 | |
1750 | /*if (address >= 0x53D0 && address <= 0x53FF) | |
1751 | printf("M68K: Writing word $%04X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1752 | //Testing AvP on UAE core... | |
1753 | //000075A0: FFFFF80E B6320220 (BITMAP) | |
1754 | /*if (address == 0x75A0 && value == 0xFFFF) | |
1755 | { | |
1756 | printf("\nM68K: (16) Tripwire hit...\n"); | |
1757 | ShowM68KContext(); | |
1758 | }//*/ | |
cf76e892 JPM |
1759 | |
1760 | #ifndef USE_NEW_MMU | |
f04df4f1 JPM |
1761 | // Note that the Jaguar only has 2M of RAM, not 4! |
1762 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 2))) | |
a8c13b4d | 1763 | { |
f04df4f1 JPM |
1764 | /* jaguar_mainRam[address] = value >> 8; |
1765 | jaguar_mainRam[address + 1] = value & 0xFF;*/ | |
1766 | SET16(jaguarMainRAM, address, value); | |
a8c13b4d JPM |
1767 | } |
1768 | else | |
1769 | { | |
f04df4f1 JPM |
1770 | // Memory Track device writes.... |
1771 | if ((address >= 0x800000) && (address <= 0x87FFFE)) | |
1772 | { | |
1773 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) | |
1774 | { | |
1775 | MTWriteWord(address, value); | |
1776 | return; | |
1777 | } | |
1778 | } | |
1779 | ||
a8c13b4d JPM |
1780 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) |
1781 | { | |
1782 | CDROMWriteWord(address, value, M68K); | |
1783 | } | |
1784 | else | |
1785 | { | |
1786 | if ((address >= 0xF00000) && (address <= 0xF0FFFE)) | |
1787 | { | |
1788 | TOMWriteWord(address, value, M68K); | |
1789 | } | |
1790 | else | |
1791 | { | |
1792 | if ((address >= 0xF10000) && (address <= 0xF1FFFE)) | |
1793 | { | |
1794 | JERRYWriteWord(address, value, M68K); | |
1795 | } | |
1796 | else | |
1797 | { | |
f04df4f1 JPM |
1798 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) |
1799 | { | |
1800 | SET16(jagMemSpace, address, value); | |
1801 | } | |
1802 | else | |
1803 | { | |
1804 | jaguar_unknown_writeword(address, value, M68K); | |
cf76e892 | 1805 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
f04df4f1 | 1806 | 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)); |
cf76e892 | 1807 | #endif |
f04df4f1 | 1808 | } |
a8c13b4d JPM |
1809 | } |
1810 | } | |
1811 | } | |
1812 | } | |
cf76e892 | 1813 | #else |
f04df4f1 | 1814 | MMUWrite16(address, value, M68K); |
cf76e892 | 1815 | #endif |
f04df4f1 | 1816 | } |
cf76e892 JPM |
1817 | } |
1818 | ||
1819 | ||
f04df4f1 | 1820 | // Memory write location on 32 bits |
cf76e892 JPM |
1821 | void m68k_write_memory_32(unsigned int address, unsigned int value) |
1822 | { | |
f04df4f1 JPM |
1823 | // Check memory write location on 32 bits |
1824 | if (!m68k_write_memory_check(address, "32", value)) | |
1825 | { | |
1826 | // Musashi does this automagically for you, UAE core does not :-P | |
1827 | //address &= 0x00FFFFFF; | |
1828 | /*if (address == 0x4E00) | |
1829 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ | |
1830 | //WriteLog("--> [WM32]\n"); | |
1831 | /*if (address == 0x0100)//64*4) | |
1832 | WriteLog("M68K: Wrote dword to VI vector value %08X...\n", value);//*/ | |
1833 | /*if (address >= 0xF03214 && address < 0xF0321F) | |
1834 | WriteLog("M68K: Writing DWORD (%08X) to GPU RAM (%08X)...\n", value, address);//*/ | |
1835 | //M68K: Writing DWORD (88E30047) to GPU RAM (00F03214)... | |
1836 | /*extern bool doGPUDis; | |
1837 | if (address == 0xF03214 && value == 0x88E30047) | |
1838 | // start = true; | |
1839 | doGPUDis = true;//*/ | |
1840 | /* if (address == 0x51136 || address == 0xFB074) | |
1841 | WriteLog("[WM32 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ | |
1842 | //Testing AvP on UAE core... | |
1843 | //000075A0: FFFFF80E B6320220 (BITMAP) | |
1844 | /*if (address == 0x75A0 && (value & 0xFFFF0000) == 0xFFFF0000) | |
1845 | { | |
1846 | printf("\nM68K: (32) Tripwire hit...\n"); | |
1847 | ShowM68KContext(); | |
1848 | }//*/ | |
cf76e892 JPM |
1849 | |
1850 | #ifndef USE_NEW_MMU | |
f04df4f1 JPM |
1851 | m68k_write_memory_16(address, value >> 16); |
1852 | m68k_write_memory_16(address + 2, value & 0xFFFF); | |
cf76e892 | 1853 | #else |
f04df4f1 | 1854 | MMUWrite32(address, value, M68K); |
cf76e892 | 1855 | #endif |
f04df4f1 | 1856 | } |
cf76e892 JPM |
1857 | } |
1858 | ||
1859 | ||
1860 | uint32_t JaguarGetHandler(uint32_t i) | |
1861 | { | |
1862 | return JaguarReadLong(i * 4); | |
1863 | } | |
1864 | ||
1865 | ||
1866 | bool JaguarInterruptHandlerIsValid(uint32_t i) // Debug use only... | |
1867 | { | |
1868 | uint32_t handler = JaguarGetHandler(i); | |
1869 | return (handler && (handler != 0xFFFFFFFF) ? true : false); | |
1870 | } | |
1871 | ||
1872 | ||
1873 | void M68K_show_context(void) | |
1874 | { | |
1875 | WriteLog("68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); | |
1876 | ||
1877 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) | |
1878 | { | |
1879 | WriteLog("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
1880 | ||
1881 | if (i == M68K_REG_D3 || i == M68K_REG_D7) | |
1882 | WriteLog("\n"); | |
1883 | } | |
1884 | ||
1885 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) | |
1886 | { | |
1887 | WriteLog("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
1888 | ||
1889 | if (i == M68K_REG_A3 || i == M68K_REG_A7) | |
1890 | WriteLog("\n"); | |
1891 | } | |
1892 | ||
1893 | WriteLog("68K disasm\n"); | |
1894 | // jaguar_dasm(s68000readPC()-0x1000,0x20000); | |
1895 | JaguarDasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200); | |
1896 | // jaguar_dasm(0x5000, 0x14414); | |
1897 | ||
1898 | // WriteLog("\n.......[Cart start]...........\n\n"); | |
1899 | // jaguar_dasm(0x192000, 0x1000);//0x200); | |
1900 | ||
1901 | WriteLog("..................\n"); | |
1902 | ||
1903 | if (TOMIRQEnabled(IRQ_VIDEO)) | |
1904 | { | |
1905 | WriteLog("video int: enabled\n"); | |
1906 | JaguarDasm(JaguarGetHandler(64), 0x200); | |
1907 | } | |
1908 | else | |
1909 | WriteLog("video int: disabled\n"); | |
1910 | ||
1911 | WriteLog("..................\n"); | |
1912 | ||
1913 | for(int i=0; i<256; i++) | |
1914 | { | |
1915 | WriteLog("handler %03i at ", i);//$%08X\n", i, (unsigned int)JaguarGetHandler(i)); | |
1916 | uint32_t address = (uint32_t)JaguarGetHandler(i); | |
1917 | ||
1918 | if (address == 0) | |
1919 | WriteLog(".........\n"); | |
1920 | else | |
1921 | WriteLog("$%08X\n", address); | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | ||
1926 | // | |
1927 | // Unknown read/write byte/word routines | |
1928 | // | |
1929 | ||
1930 | // It's hard to believe that developers would be sloppy with their memory | |
1931 | // writes, yet in some cases the developers screwed up royal. E.g., Club Drive | |
1932 | // has the following code: | |
1933 | // | |
1934 | // 807EC4: movea.l #$f1b000, A1 | |
1935 | // 807ECA: movea.l #$8129e0, A0 | |
1936 | // 807ED0: move.l A0, D0 | |
1937 | // 807ED2: move.l #$f1bb94, D1 | |
1938 | // 807ED8: sub.l D0, D1 | |
1939 | // 807EDA: lsr.l #2, D1 | |
1940 | // 807EDC: move.l (A0)+, (A1)+ | |
1941 | // 807EDE: dbra D1, 807edc | |
1942 | // | |
1943 | // The problem is at $807ED0--instead of putting A0 into D0, they really meant | |
1944 | // to put A1 in. This mistake causes it to try and overwrite approximately | |
1945 | // $700000 worth of address space! (That is, unless the 68K causes a bus | |
1946 | // error...) | |
1947 | ||
1948 | void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) | |
1949 | { | |
a8c13b4d | 1950 | m68k_write_unknown_alert(address, "8", data); |
cf76e892 JPM |
1951 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
1952 | 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)); | |
1953 | #endif | |
1954 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS | |
1955 | // extern bool finished; | |
1956 | finished = true; | |
1957 | // extern bool doDSPDis; | |
1958 | if (who == DSP) | |
1959 | doDSPDis = true; | |
1960 | #endif | |
1961 | } | |
1962 | ||
1963 | ||
1964 | void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) | |
1965 | { | |
a8c13b4d | 1966 | m68k_write_unknown_alert(address, "16", data); |
cf76e892 JPM |
1967 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
1968 | 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)); | |
1969 | #endif | |
1970 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS | |
1971 | // extern bool finished; | |
1972 | finished = true; | |
1973 | // extern bool doDSPDis; | |
1974 | if (who == DSP) | |
1975 | doDSPDis = true; | |
1976 | #endif | |
1977 | } | |
1978 | ||
1979 | ||
1980 | unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who/*=UNKNOWN*/) | |
1981 | { | |
1982 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES | |
1983 | WriteLog("Jaguar: Unknown byte read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); | |
1984 | #endif | |
1985 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS | |
1986 | // extern bool finished; | |
1987 | finished = true; | |
1988 | // extern bool doDSPDis; | |
1989 | if (who == DSP) | |
1990 | doDSPDis = true; | |
1991 | #endif | |
1992 | return 0xFF; | |
1993 | } | |
1994 | ||
1995 | ||
1996 | unsigned jaguar_unknown_readword(unsigned address, uint32_t who/*=UNKNOWN*/) | |
1997 | { | |
1998 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES | |
1999 | WriteLog("Jaguar: Unknown word read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); | |
2000 | #endif | |
2001 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS | |
2002 | // extern bool finished; | |
2003 | finished = true; | |
2004 | // extern bool doDSPDis; | |
2005 | if (who == DSP) | |
2006 | doDSPDis = true; | |
2007 | #endif | |
2008 | return 0xFFFF; | |
2009 | } | |
2010 | ||
2011 | ||
2012 | // | |
2013 | // Disassemble M68K instructions at the given offset | |
2014 | // | |
2015 | ||
2016 | unsigned int m68k_read_disassembler_8(unsigned int address) | |
2017 | { | |
2018 | return m68k_read_memory_8(address); | |
2019 | } | |
2020 | ||
2021 | ||
2022 | unsigned int m68k_read_disassembler_16(unsigned int address) | |
2023 | { | |
2024 | return m68k_read_memory_16(address); | |
2025 | } | |
2026 | ||
2027 | ||
2028 | unsigned int m68k_read_disassembler_32(unsigned int address) | |
2029 | { | |
2030 | return m68k_read_memory_32(address); | |
2031 | } | |
2032 | ||
2033 | ||
2034 | void JaguarDasm(uint32_t offset, uint32_t qt) | |
2035 | { | |
2036 | #ifdef CPU_DEBUG | |
2037 | static char buffer[2048];//, mem[64]; | |
2038 | int pc = offset, oldpc; | |
2039 | ||
2040 | for(uint32_t i=0; i<qt; i++) | |
2041 | { | |
2042 | /* oldpc = pc; | |
2043 | for(int j=0; j<64; j++) | |
2044 | mem[j^0x01] = jaguar_byte_read(pc + j); | |
2045 | ||
2046 | pc += Dasm68000((char *)mem, buffer, 0); | |
2047 | WriteLog("%08X: %s\n", oldpc, buffer);//*/ | |
2048 | oldpc = pc; | |
2049 | pc += m68k_disassemble(buffer, pc, 0, 1);//M68K_CPU_TYPE_68000); | |
2050 | WriteLog("%08X: %s\n", oldpc, buffer);//*/ | |
2051 | } | |
2052 | #endif | |
2053 | } | |
2054 | ||
2055 | ||
2056 | uint8_t JaguarReadByte(uint32_t offset, uint32_t who/*=UNKNOWN*/) | |
2057 | { | |
2058 | uint8_t data = 0x00; | |
2059 | offset &= 0xFFFFFF; | |
2060 | ||
2061 | // First 2M is mirrored in the $0 - $7FFFFF range | |
2062 | if (offset < 0x800000) | |
2063 | data = jaguarMainRAM[offset & (vjs.DRAM_size - 1)]; | |
2064 | else if ((offset >= 0x800000) && (offset < 0xDFFF00)) | |
2065 | data = jaguarMainROM[offset - 0x800000]; | |
2066 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) | |
2067 | data = CDROMReadByte(offset, who); | |
2068 | else if ((offset >= 0xE00000) && (offset < 0xE40000)) | |
2069 | // data = jaguarBootROM[offset & 0x3FFFF]; | |
2070 | // data = jaguarDevBootROM1[offset & 0x3FFFF]; | |
2071 | data = jagMemSpace[offset]; | |
2072 | else if ((offset >= 0xF00000) && (offset < 0xF10000)) | |
2073 | data = TOMReadByte(offset, who); | |
2074 | else if ((offset >= 0xF10000) && (offset < 0xF20000)) | |
2075 | data = JERRYReadByte(offset, who); | |
2076 | else | |
2077 | data = jaguar_unknown_readbyte(offset, who); | |
2078 | ||
2079 | return data; | |
2080 | } | |
2081 | ||
2082 | ||
2083 | uint16_t JaguarReadWord(uint32_t offset, uint32_t who/*=UNKNOWN*/) | |
2084 | { | |
2085 | offset &= 0xFFFFFF; | |
2086 | ||
2087 | // First 2M is mirrored in the $0 - $7FFFFF range | |
2088 | if (offset < 0x800000) | |
2089 | { | |
2090 | return (jaguarMainRAM[(offset+0) & (vjs.DRAM_size - 1)] << 8) | jaguarMainRAM[(offset+1) & (vjs.DRAM_size - 1)]; | |
2091 | } | |
2092 | else if ((offset >= 0x800000) && (offset < 0xDFFF00)) | |
2093 | { | |
2094 | offset -= 0x800000; | |
2095 | return (jaguarMainROM[offset+0] << 8) | jaguarMainROM[offset+1]; | |
2096 | } | |
2097 | // else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00)) | |
2098 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE)) | |
2099 | return CDROMReadWord(offset, who); | |
2100 | else if ((offset >= 0xE00000) && (offset <= 0xE3FFFE)) | |
2101 | // return (jaguarBootROM[(offset+0) & 0x3FFFF] << 8) | jaguarBootROM[(offset+1) & 0x3FFFF]; | |
2102 | // return (jaguarDevBootROM1[(offset+0) & 0x3FFFF] << 8) | jaguarDevBootROM1[(offset+1) & 0x3FFFF]; | |
2103 | return (jagMemSpace[offset + 0] << 8) | jagMemSpace[offset + 1]; | |
2104 | else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE)) | |
2105 | return TOMReadWord(offset, who); | |
2106 | else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE)) | |
2107 | return JERRYReadWord(offset, who); | |
2108 | ||
2109 | return jaguar_unknown_readword(offset, who); | |
2110 | } | |
2111 | ||
2112 | ||
2113 | void JaguarWriteByte(uint32_t offset, uint8_t data, uint32_t who/*=UNKNOWN*/) | |
2114 | { | |
2115 | /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18) | |
2116 | { | |
2117 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]); | |
2118 | }//*/ | |
2119 | /* if (offset >= 0x4E00 && offset < 0x4E04) | |
2120 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ | |
2121 | //Need to check for writes in the range of $18FA70 + 8000... | |
2122 | /*if (effect_start) | |
2123 | if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000)) | |
2124 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ | |
2125 | ||
2126 | offset &= 0xFFFFFF; | |
2127 | ||
2128 | // First 2M is mirrored in the $0 - $7FFFFF range | |
2129 | if (offset < 0x800000) | |
2130 | { | |
2131 | jaguarMainRAM[offset & (vjs.DRAM_size - 1)] = data; | |
2132 | return; | |
2133 | } | |
2134 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) | |
2135 | { | |
2136 | CDROMWriteByte(offset, data, who); | |
2137 | return; | |
2138 | } | |
2139 | else if ((offset >= 0xF00000) && (offset <= 0xF0FFFF)) | |
2140 | { | |
2141 | TOMWriteByte(offset, data, who); | |
2142 | return; | |
2143 | } | |
2144 | else if ((offset >= 0xF10000) && (offset <= 0xF1FFFF)) | |
2145 | { | |
2146 | JERRYWriteByte(offset, data, who); | |
2147 | return; | |
2148 | } | |
2149 | ||
2150 | jaguar_unknown_writebyte(offset, data, who); | |
2151 | } | |
2152 | ||
2153 | ||
2154 | uint32_t starCount; | |
2155 | void JaguarWriteWord(uint32_t offset, uint16_t data, uint32_t who/*=UNKNOWN*/) | |
2156 | { | |
2157 | /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18) | |
2158 | { | |
2159 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]); | |
2160 | WriteLog(" GPU PC = $%06X\n", GPUReadLong(0xF02110, DEBUG)); | |
2161 | }//*/ | |
2162 | /* if (offset >= 0x4E00 && offset < 0x4E04) | |
2163 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/ | |
2164 | /*if (offset == 0x0100)//64*4) | |
2165 | WriteLog("M68K: %s wrote word to VI vector value %04X...\n", whoName[who], data); | |
2166 | if (offset == 0x0102)//64*4) | |
2167 | WriteLog("M68K: %s wrote word to VI vector+2 value %04X...\n", whoName[who], data);//*/ | |
2168 | //TEMP--Mirror of F03000? Yes, but only 32-bit CPUs can do it (i.e., NOT the 68K!) | |
2169 | // PLUS, you would handle this in the GPU/DSP WriteLong code! Not here! | |
2170 | //Need to check for writes in the range of $18FA70 + 8000... | |
2171 | /*if (effect_start) | |
2172 | if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000)) | |
2173 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/ | |
2174 | /*if (offset >= 0x2C00 && offset <= 0x2CFF) | |
2175 | WriteLog("Jaguar: Word %04X written to TOC+%02X by %s\n", data, offset-0x2C00, whoName[who]);//*/ | |
2176 | ||
2177 | offset &= 0xFFFFFF; | |
2178 | ||
2179 | // First 2M is mirrored in the $0 - $7FFFFF range | |
2180 | if (offset <= 0x7FFFFE) | |
2181 | { | |
2182 | /* | |
2183 | GPU Table (CD BIOS) | |
2184 | ||
2185 | 1A 69 F0 ($0000) -> Starfield | |
2186 | 1A 73 C8 ($0001) -> Final clearing blit & bitmap blit? | |
2187 | 1A 79 F0 ($0002) | |
2188 | 1A 88 C0 ($0003) | |
2189 | 1A 8F E8 ($0004) -> "Jaguar" small color logo? | |
2190 | 1A 95 20 ($0005) | |
2191 | 1A 9F 08 ($0006) | |
2192 | 1A A1 38 ($0007) | |
2193 | 1A AB 38 ($0008) | |
2194 | 1A B3 C8 ($0009) | |
2195 | 1A B9 C0 ($000A) | |
2196 | */ | |
2197 | ||
2198 | //This MUST be done by the 68K! | |
2199 | /*if (offset == 0x670C) | |
2200 | WriteLog("Jaguar: %s writing to location $670C...\n", whoName[who]);*/ | |
2201 | ||
2202 | /*extern bool doGPUDis; | |
2203 | //if ((offset == 0x100000 + 75522) && who == GPU) // 76,226 -> 75522 | |
2204 | if ((offset == 0x100000 + 128470) && who == GPU) // 107,167 -> 128470 (384 x 250 screen size 16BPP) | |
2205 | //if ((offset >= 0x100000 && offset <= 0x12C087) && who == GPU) | |
2206 | doGPUDis = true;//*/ | |
2207 | /*if (offset == 0x100000 + 128470) // 107,167 -> 128470 (384 x 250 screen size 16BPP) | |
2208 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]); | |
2209 | if ((data & 0xFF00) != 0x7700) | |
2210 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/ | |
2211 | /*if ((offset >= 0x100000 && offset <= 0x147FFF) && who == GPU) | |
2212 | return;//*/ | |
2213 | /*if ((data & 0xFF00) != 0x7700 && who == GPU) | |
2214 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/ | |
2215 | /*if ((offset >= 0x100000 + 0x48000 && offset <= 0x12C087 + 0x48000) && who == GPU) | |
2216 | return;//*/ | |
2217 | /*extern bool doGPUDis; | |
2218 | if (offset == 0x120216 && who == GPU) | |
2219 | doGPUDis = true;//*/ | |
2220 | /*extern uint32_t gpu_pc; | |
2221 | if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) | |
2222 | { | |
2223 | uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); | |
2224 | uint32_t y = base / 0x300; | |
2225 | uint32_t x = (base - (y * 0x300)) / 2; | |
2226 | WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); | |
2227 | }//*/ | |
2228 | /* | |
2229 | JWW: Writing starfield star 775E at 0011F650 (555984/1447) | |
2230 | */ | |
2231 | //if (offset == (0x001E17F8 + 0x34)) | |
2232 | /*if (who == GPU && offset == (0x001E17F8 + 0x34)) | |
2233 | data = 0xFE3C;//*/ | |
2234 | // WriteLog("JWW: Write at %08X written to by %s.\n", 0x001E17F8 + 0x34, whoName[who]);//*/ | |
2235 | /*extern uint32_t gpu_pc; | |
2236 | if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) | |
2237 | { | |
2238 | extern int objectPtr; | |
2239 | // if (offset > 0x148000) | |
2240 | // return; | |
2241 | starCount++; | |
2242 | if (starCount > objectPtr) | |
2243 | return; | |
2244 | ||
2245 | // if (starCount == 1) | |
2246 | // WriteLog("--> Drawing 1st star...\n"); | |
2247 | // | |
2248 | // uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); | |
2249 | // uint32_t y = base / 0x300; | |
2250 | // uint32_t x = (base - (y * 0x300)) / 2; | |
2251 | // WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); | |
2252 | ||
2253 | //A star of interest... | |
2254 | //-->JWW: Writing starfield star 77C9 at 0011D31A (269/155) [s] | |
2255 | //1st trail +3(x), -1(y) -> 272, 154 -> 0011D020 | |
2256 | //JWW: Blitter writing echo 77B3 at 0011D022... | |
2257 | }//*/ | |
2258 | //extern bool doGPUDis; | |
2259 | /*if (offset == 0x11D022 + 0x48000 || offset == 0x11D022)// && who == GPU) | |
2260 | { | |
2261 | // doGPUDis = true; | |
2262 | WriteLog("JWW: %s writing echo %04X at %08X...\n", whoName[who], data, offset); | |
2263 | // LogBlit(); | |
2264 | } | |
2265 | if (offset == 0x11D31A + 0x48000 || offset == 0x11D31A) | |
2266 | WriteLog("JWW: %s writing star %04X at %08X...\n", whoName[who], data, offset);//*/ | |
2267 | ||
2268 | jaguarMainRAM[(offset+0) & (vjs.DRAM_size - 1)] = data >> 8; | |
2269 | jaguarMainRAM[(offset+1) & (vjs.DRAM_size - 1)] = data & 0xFF; | |
2270 | return; | |
2271 | } | |
2272 | else if (offset >= 0xDFFF00 && offset <= 0xDFFFFE) | |
2273 | { | |
2274 | CDROMWriteWord(offset, data, who); | |
2275 | return; | |
2276 | } | |
2277 | else if (offset >= 0xF00000 && offset <= 0xF0FFFE) | |
2278 | { | |
2279 | TOMWriteWord(offset, data, who); | |
2280 | return; | |
2281 | } | |
2282 | else if (offset >= 0xF10000 && offset <= 0xF1FFFE) | |
2283 | { | |
2284 | JERRYWriteWord(offset, data, who); | |
2285 | return; | |
2286 | } | |
2287 | // Don't bomb on attempts to write to ROM | |
2288 | else if (offset >= 0x800000 && offset <= 0xEFFFFF) | |
2289 | return; | |
2290 | ||
2291 | jaguar_unknown_writeword(offset, data, who); | |
2292 | } | |
2293 | ||
2294 | ||
2295 | // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! | |
2296 | uint32_t JaguarReadLong(uint32_t offset, uint32_t who/*=UNKNOWN*/) | |
2297 | { | |
2298 | return (JaguarReadWord(offset, who) << 16) | JaguarReadWord(offset+2, who); | |
2299 | } | |
2300 | ||
2301 | ||
2302 | // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! | |
2303 | void JaguarWriteLong(uint32_t offset, uint32_t data, uint32_t who/*=UNKNOWN*/) | |
2304 | { | |
2305 | /* extern bool doDSPDis; | |
2306 | if (offset < 0x400 && !doDSPDis) | |
2307 | { | |
2308 | WriteLog("JLW: Write to %08X by %s... Starting DSP log!\n\n", offset, whoName[who]); | |
2309 | doDSPDis = true; | |
2310 | }//*/ | |
2311 | /*if (offset == 0x0100)//64*4) | |
2312 | WriteLog("M68K: %s wrote dword to VI vector value %08X...\n", whoName[who], data);//*/ | |
2313 | ||
2314 | JaguarWriteWord(offset, data >> 16, who); | |
2315 | JaguarWriteWord(offset+2, data & 0xFFFF, who); | |
2316 | } | |
2317 | ||
2318 | ||
2319 | void JaguarSetScreenBuffer(uint32_t * buffer) | |
2320 | { | |
2321 | // This is in TOM, but we set it here... | |
2322 | screenBuffer = buffer; | |
2323 | } | |
2324 | ||
2325 | ||
2326 | void JaguarSetScreenPitch(uint32_t pitch) | |
2327 | { | |
2328 | // This is in TOM, but we set it here... | |
2329 | screenPitch = pitch; | |
2330 | } | |
2331 | ||
2332 | ||
2333 | // | |
2334 | // Jaguar console initialization | |
2335 | // | |
2336 | void JaguarInit(void) | |
2337 | { | |
2338 | // For randomizing RAM | |
2339 | srand((unsigned int)time(NULL)); | |
2340 | ||
2341 | // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents | |
2342 | for(uint32_t i=0; i<vjs.DRAM_size; i+=4) | |
2343 | *((uint32_t *)(&jaguarMainRAM[i])) = rand(); | |
2344 | ||
2345 | #ifdef CPU_DEBUG_MEMORY | |
2346 | memset(readMem, 0x00, 0x400000); | |
2347 | memset(writeMemMin, 0xFF, 0x400000); | |
2348 | memset(writeMemMax, 0x00, 0x400000); | |
2349 | #endif | |
2350 | // memset(jaguarMainRAM, 0x00, 0x200000); | |
2351 | // memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs... | |
2352 | // memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s... | |
2353 | //NOTE: This *doesn't* fix FlipOut... | |
2354 | //Or does it? Hmm... | |
2355 | //Seems to want $01010101... Dunno why. Investigate! | |
2356 | // memset(jaguarMainROM, 0x01, 0x600000); // & set it to all 01s... | |
2357 | // memset(jaguar_mainRom, 0xFF, 0x600000); // & set it to all Fs... | |
2358 | lowerField = false; // Reset the lower field flag | |
2359 | //temp, for crappy crap that sux | |
2360 | memset(jaguarMainRAM + 0x804, 0xFF, 4); | |
2361 | ||
2362 | m68k_pulse_reset(); // Need to do this so UAE disasm doesn't segfault on exit | |
2363 | GPUInit(); | |
2364 | DSPInit(); | |
2365 | TOMInit(); | |
2366 | JERRYInit(); | |
2367 | CDROMInit(); | |
1081a838 | 2368 | m68k_brk_init(); |
cf76e892 JPM |
2369 | } |
2370 | ||
2371 | ||
2372 | //New timer based code stuffola... | |
2373 | void HalflineCallback(void); | |
2374 | void RenderCallback(void); | |
2375 | void JaguarReset(void) | |
2376 | { | |
2377 | // Only problem with this approach: It wipes out RAM loaded files...! | |
2378 | // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents | |
ed31b999 JPM |
2379 | for (uint32_t i = 8; i < vjs.DRAM_size; i += 4) |
2380 | { | |
cf76e892 | 2381 | *((uint32_t *)(&jaguarMainRAM[i])) = rand(); |
ed31b999 | 2382 | } |
cf76e892 JPM |
2383 | |
2384 | // New timer base code stuffola... | |
2385 | InitializeEventList(); | |
2386 | //Need to change this so it uses the single RAM space and load the BIOS | |
2387 | //into it somewhere... | |
2388 | //Also, have to change this here and in JaguarReadXX() currently | |
2389 | // Only use the system BIOS if it's available...! (it's always available now!) | |
2390 | // AND only if a jaguar cartridge has been inserted. | |
ed31b999 | 2391 | #ifndef NEWMODELSBIOSHANDLER |
cf76e892 | 2392 | if (vjs.useJaguarBIOS && jaguarCartInserted && !vjs.hardwareTypeAlpine && !vjs.softTypeDebugger) |
ed31b999 | 2393 | { |
cf76e892 | 2394 | memcpy(jaguarMainRAM, jagMemSpace + 0xE00000, 8); |
ed31b999 JPM |
2395 | #else |
2396 | if (vjs.useJaguarBIOS && jaguarCartInserted) | |
2397 | { | |
2398 | SetBIOS(); | |
2399 | #endif | |
2400 | } | |
cf76e892 | 2401 | else |
ed31b999 | 2402 | { |
cf76e892 | 2403 | SET32(jaguarMainRAM, 4, jaguarRunAddress); |
ed31b999 | 2404 | } |
cf76e892 JPM |
2405 | |
2406 | // WriteLog("jaguar_reset():\n"); | |
2407 | TOMReset(); | |
2408 | JERRYReset(); | |
2409 | GPUReset(); | |
2410 | DSPReset(); | |
2411 | CDROMReset(); | |
2412 | m68k_pulse_reset(); // Reset the 68000 | |
2413 | WriteLog("Jaguar: 68K reset. PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7)); | |
cf76e892 JPM |
2414 | lowerField = false; // Reset the lower field flag |
2415 | // SetCallbackTime(ScanlineCallback, 63.5555); | |
2416 | // SetCallbackTime(ScanlineCallback, 31.77775); | |
2417 | SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); | |
2418 | } | |
2419 | ||
2420 | ||
2421 | void JaguarDone(void) | |
2422 | { | |
2423 | #ifdef CPU_DEBUG_MEMORY | |
2424 | /* WriteLog("\nJaguar: Memory Usage Stats (return addresses)\n\n"); | |
2425 | ||
2426 | for(uint32_t i=0; i<=raPtr; i++) | |
2427 | { | |
2428 | WriteLog("\t%08X\n", returnAddr[i]); | |
2429 | WriteLog("M68000 disassembly at $%08X...\n", returnAddr[i] - 16); | |
2430 | jaguar_dasm(returnAddr[i] - 16, 16); | |
2431 | WriteLog("\n"); | |
2432 | } | |
2433 | WriteLog("\n");//*/ | |
2434 | ||
2435 | /* int start = 0, end = 0; | |
2436 | bool endTriggered = false, startTriggered = false; | |
2437 | for(int i=0; i<0x400000; i++) | |
2438 | { | |
2439 | if (readMem[i] && writeMemMin[i] != 0xFF && writeMemMax != 0x00) | |
2440 | { | |
2441 | if (!startTriggered) | |
2442 | startTriggered = true, endTriggered = false, start = i; | |
2443 | ||
2444 | WriteLog("\t\tMin/Max @ %06X: %u/%u\n", i, writeMemMin[i], writeMemMax[i]); | |
2445 | } | |
2446 | else | |
2447 | { | |
2448 | if (!endTriggered) | |
2449 | { | |
2450 | end = i - 1, endTriggered = true, startTriggered = false; | |
2451 | WriteLog("\tMemory range accessed: %06X - %06X\n", start, end); | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | WriteLog("\n");//*/ | |
2456 | #endif | |
2457 | //#ifdef CPU_DEBUG | |
2458 | // for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) | |
2459 | // WriteLog("\tA%i = 0x%.8x\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); | |
2460 | int32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); | |
2461 | WriteLog("M68K: Top of stack: %08X -> (%08X). Stack trace:\n", topOfStack, JaguarReadLong(topOfStack)); | |
2462 | #if 0 | |
2463 | for(int i=-2; i<9; i++) | |
2464 | WriteLog("%06X: %08X\n", topOfStack + (i * 4), JaguarReadLong(topOfStack + (i * 4))); | |
2465 | #else | |
2466 | uint32_t address = topOfStack - (4 * 4 * 3); | |
2467 | ||
2468 | for(int i=0; i<10; i++) | |
2469 | { | |
2470 | WriteLog("%06X:", address); | |
2471 | ||
2472 | for(int j=0; j<4; j++) | |
2473 | { | |
2474 | WriteLog(" %08X", JaguarReadLong(address)); | |
2475 | address += 4; | |
2476 | } | |
2477 | ||
2478 | WriteLog("\n"); | |
2479 | } | |
2480 | #endif | |
2481 | ||
2482 | /* WriteLog("\nM68000 disassembly at $802288...\n"); | |
2483 | jaguar_dasm(0x802288, 3); | |
2484 | WriteLog("\nM68000 disassembly at $802200...\n"); | |
2485 | jaguar_dasm(0x802200, 500); | |
2486 | WriteLog("\nM68000 disassembly at $802518...\n"); | |
2487 | jaguar_dasm(0x802518, 100);//*/ | |
2488 | ||
2489 | /* WriteLog("\n\nM68000 disassembly at $803F00 (look @ $803F2A)...\n"); | |
2490 | jaguar_dasm(0x803F00, 500); | |
2491 | WriteLog("\n");//*/ | |
2492 | ||
2493 | /* WriteLog("\n\nM68000 disassembly at $802B00 (look @ $802B5E)...\n"); | |
2494 | jaguar_dasm(0x802B00, 500); | |
2495 | WriteLog("\n");//*/ | |
2496 | ||
2497 | /* WriteLog("\n\nM68000 disassembly at $809900 (look @ $8099F8)...\n"); | |
2498 | jaguar_dasm(0x809900, 500); | |
2499 | WriteLog("\n");//*/ | |
2500 | //8099F8 | |
2501 | /* WriteLog("\n\nDump of $8093C8:\n\n"); | |
2502 | for(int i=0x8093C8; i<0x809900; i+=4) | |
2503 | WriteLog("%06X: %08X\n", i, JaguarReadLong(i));//*/ | |
2504 | /* WriteLog("\n\nM68000 disassembly at $90006C...\n"); | |
2505 | jaguar_dasm(0x90006C, 500); | |
2506 | WriteLog("\n");//*/ | |
2507 | /* WriteLog("\n\nM68000 disassembly at $1AC000...\n"); | |
2508 | jaguar_dasm(0x1AC000, 6000); | |
2509 | WriteLog("\n");//*/ | |
2510 | ||
2511 | // WriteLog("Jaguar: CD BIOS version %04X\n", JaguarReadWord(0x3004)); | |
2512 | WriteLog("Jaguar: Interrupt enable = $%02X\n", TOMReadByte(0xF000E1, JAGUAR) & 0x1F); | |
2513 | WriteLog("Jaguar: Video interrupt is %s (line=%u)\n", ((TOMIRQEnabled(IRQ_VIDEO)) | |
2514 | && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled", TOMReadWord(0xF0004E, JAGUAR)); | |
2515 | M68K_show_context(); | |
2516 | //#endif | |
2517 | ||
2518 | CDROMDone(); | |
2519 | GPUDone(); | |
2520 | DSPDone(); | |
2521 | TOMDone(); | |
2522 | JERRYDone(); | |
1081a838 | 2523 | m68k_brk_close(); |
cf76e892 JPM |
2524 | |
2525 | // temp, until debugger is in place | |
2526 | //00802016: jsr $836F1A.l | |
2527 | //0080201C: jsr $836B30.l | |
2528 | //00802022: jsr $836B18.l | |
2529 | //00802028: jsr $8135F0.l | |
2530 | //00813C1E: jsr $813F76.l | |
2531 | //00802038: jsr $836D00.l | |
2532 | //00802098: jsr $8373A4.l | |
2533 | //008020A2: jsr $83E24A.l | |
2534 | //008020BA: jsr $83E156.l | |
2535 | //008020C6: jsr $83E19C.l | |
2536 | //008020E6: jsr $8445E8.l | |
2537 | //008020EC: jsr $838C20.l | |
2538 | //0080211A: jsr $838ED6.l | |
2539 | //00802124: jsr $89CA56.l | |
2540 | //0080212A: jsr $802B48.l | |
2541 | #if 0 | |
2542 | WriteLog("-------------------------------------------\n"); | |
2543 | JaguarDasm(0x8445E8, 0x200); | |
2544 | WriteLog("-------------------------------------------\n"); | |
2545 | JaguarDasm(0x838C20, 0x200); | |
2546 | WriteLog("-------------------------------------------\n"); | |
2547 | JaguarDasm(0x838ED6, 0x200); | |
2548 | WriteLog("-------------------------------------------\n"); | |
2549 | JaguarDasm(0x89CA56, 0x200); | |
2550 | WriteLog("-------------------------------------------\n"); | |
2551 | JaguarDasm(0x802B48, 0x200); | |
2552 | WriteLog("\n\nM68000 disassembly at $802000...\n"); | |
2553 | JaguarDasm(0x802000, 6000); | |
2554 | WriteLog("\n");//*/ | |
2555 | #endif | |
2556 | /* WriteLog("\n\nM68000 disassembly at $6004...\n"); | |
2557 | JaguarDasm(0x6004, 10000); | |
2558 | WriteLog("\n");//*/ | |
2559 | // WriteLog("\n\nM68000 disassembly at $802000...\n"); | |
2560 | // JaguarDasm(0x802000, 0x1000); | |
2561 | // WriteLog("\n\nM68000 disassembly at $4100...\n"); | |
2562 | // JaguarDasm(0x4100, 200); | |
2563 | // WriteLog("\n\nM68000 disassembly at $800800...\n"); | |
2564 | // JaguarDasm(0x800800, 0x1000); | |
2565 | } | |
2566 | ||
2567 | ||
2568 | // Temp debugging stuff | |
2569 | ||
2570 | void DumpMainMemory(void) | |
2571 | { | |
2572 | FILE * fp = fopen("./memdump.bin", "wb"); | |
2573 | ||
2574 | if (fp == NULL) | |
2575 | return; | |
2576 | ||
2577 | fwrite(jaguarMainRAM, 1, vjs.DRAM_size, fp); | |
2578 | fclose(fp); | |
2579 | } | |
2580 | ||
2581 | ||
2582 | uint8_t * GetRamPtr(void) | |
2583 | { | |
2584 | return jaguarMainRAM; | |
2585 | } | |
2586 | ||
2587 | ||
2588 | // | |
2589 | // New Jaguar execution stack | |
2590 | // This executes 1 frame's worth of code. | |
2591 | // | |
cf76e892 JPM |
2592 | void JaguarExecuteNew(void) |
2593 | { | |
2594 | frameDone = false; | |
2595 | ||
2596 | do | |
2597 | { | |
2598 | double timeToNextEvent = GetTimeToNextEvent(); | |
2599 | //WriteLog("JEN: Time to next event (%u) is %f usec (%u RISC cycles)...\n", nextEvent, timeToNextEvent, USEC_TO_RISC_CYCLES(timeToNextEvent)); | |
2600 | ||
2601 | m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent)); | |
2602 | ||
2603 | if (vjs.GPUEnabled) | |
2604 | GPUExec(USEC_TO_RISC_CYCLES(timeToNextEvent)); | |
2605 | ||
2606 | HandleNextEvent(); | |
2607 | } | |
2608 | while (!frameDone); | |
2609 | } | |
2610 | ||
2611 | ||
2612 | // Step over function | |
44432db5 | 2613 | int JaguarStepOver(int depth) |
cf76e892 | 2614 | { |
ea055419 JPM |
2615 | bool exit = !depth; |
2616 | int cycles = 0; | |
cf76e892 JPM |
2617 | //bool case55 = false; |
2618 | //uint32_t m68kSR; | |
2619 | ||
ea055419 JPM |
2620 | // if (!depth) |
2621 | // { | |
2622 | // cycles = 0; | |
2623 | // exit = true; | |
2624 | // } | |
2625 | // else | |
2626 | // { | |
2627 | // exit = false; | |
2628 | // } | |
cf76e892 JPM |
2629 | |
2630 | do | |
2631 | { | |
44432db5 | 2632 | cycles += JaguarStepInto(); |
cf76e892 JPM |
2633 | |
2634 | switch (M68KGetCurrentOpcodeFamily()) | |
2635 | { | |
2636 | // rts | |
2637 | case 49: | |
2638 | //if (depth) | |
2639 | { | |
2640 | //if (!--depth) | |
2641 | { | |
2642 | exit = true; | |
2643 | } | |
2644 | //exit = false; | |
2645 | } | |
2646 | break; | |
2647 | ||
2648 | #if 0 | |
2649 | // bcc | |
2650 | case 55: | |
2651 | if (!depth) | |
2652 | { | |
2653 | //m68kSR = m68k_get_reg(NULL, M68K_REG_SR); | |
2654 | if (m68k_get_reg(NULL, M68K_REG_SR) & 0x4) | |
2655 | { | |
2656 | exit = true; | |
2657 | } | |
2658 | else | |
2659 | { | |
2660 | exit = false; | |
2661 | } | |
2662 | } | |
2663 | break; | |
2664 | #endif | |
2665 | ||
2666 | // bsr & jsr | |
2667 | case 54: | |
2668 | case 52: | |
44432db5 | 2669 | cycles += JaguarStepOver(depth+1); |
cf76e892 JPM |
2670 | //if (depth) |
2671 | //{ | |
2672 | // exit = false; | |
2673 | //} | |
2674 | break; | |
2675 | ||
2676 | default: | |
2677 | //if (case55) | |
2678 | //{ | |
2679 | // exit = true; | |
2680 | //} | |
2681 | break; | |
2682 | } | |
2683 | } | |
1cd9e492 | 2684 | while (!exit && !M68KDebugHaltStatus()); |
cf76e892 JPM |
2685 | |
2686 | #ifdef _MSC_VER | |
2687 | #pragma message("Warning: !!! Need to verify the Jaguar Step Over function !!!") | |
2688 | #else | |
44432db5 | 2689 | #warning "!!! Need to verify the Jaguar Step Over function !!!" |
cf76e892 | 2690 | #endif // _MSC_VER |
44432db5 | 2691 | return cycles; |
cf76e892 JPM |
2692 | } |
2693 | ||
2694 | ||
2695 | // Step into function | |
44432db5 | 2696 | int JaguarStepInto(void) |
cf76e892 | 2697 | { |
44432db5 | 2698 | int cycles; |
cf76e892 JPM |
2699 | // double timeToNextEvent = GetTimeToNextEvent(); |
2700 | ||
44432db5 | 2701 | cycles = m68k_execute(USEC_TO_M68K_CYCLES(0)); |
cf76e892 JPM |
2702 | // m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent)); |
2703 | ||
2704 | if (vjs.GPUEnabled) | |
2705 | GPUExec(USEC_TO_RISC_CYCLES(0)); | |
2706 | ||
2707 | // HandleNextEvent(); | |
2708 | #ifdef _MSC_VER | |
2709 | #pragma message("Warning: !!! Need to verify the Jaguar Step Into function !!!") | |
2710 | #else | |
2711 | #warning "!!! Need to verify the Jaguar Step Into function !!!" | |
2712 | #endif // _MSC_VER | |
44432db5 | 2713 | return cycles; |
cf76e892 JPM |
2714 | } |
2715 | ||
2716 | ||
2717 | // | |
2718 | // The thing to keep in mind is that the VC is advanced every HALF line, | |
2719 | // regardless of whether the display is interlaced or not. The only difference | |
2720 | // with an interlaced display is that the high bit of VC will be set when the | |
2721 | // lower field is being rendered. (NB: The high bit of VC is ALWAYS set on the | |
2722 | // lower field, regardless of whether it's in interlace mode or not. | |
2723 | // NB2: Seems it doesn't always, not sure what the constraint is...) | |
2724 | // | |
2725 | // Normally, TVs will render a full frame in 1/30s (NTSC) or 1/25s (PAL) by | |
2726 | // rendering two fields that are slighty vertically offset from each other. | |
2727 | // Each field is created in 1/60s (NTSC) or 1/50s (PAL), and every other line | |
2728 | // is rendered in this mode so that each field, when overlaid on each other, | |
2729 | // will yield the final picture at the full resolution for the full frame. | |
2730 | // | |
2731 | // We execute a half frame in each timeslice (1/60s NTSC, 1/50s PAL). | |
2732 | // Since the number of lines in a FULL frame is 525 for NTSC, 625 for PAL, | |
2733 | // it will be half this number for a half frame. BUT, since we're counting | |
2734 | // HALF lines, we double this number and we're back at 525 for NTSC, 625 for | |
2735 | // PAL. | |
2736 | // | |
2737 | // Scanline times are 63.5555... μs in NTSC and 64 μs in PAL | |
2738 | // Half line times are, naturally, half of this. :-P | |
2739 | // | |
2740 | void HalflineCallback(void) | |
2741 | { | |
2742 | uint16_t vc = TOMReadWord(0xF00006, JAGUAR); | |
2743 | uint16_t vp = TOMReadWord(0xF0003E, JAGUAR) + 1; | |
2744 | uint16_t vi = TOMReadWord(0xF0004E, JAGUAR); | |
2745 | // uint16_t vbb = TOMReadWord(0xF00040, JAGUAR); | |
2746 | vc++; | |
2747 | ||
2748 | // Each # of lines is for a full frame == 1/30s (NTSC), 1/25s (PAL). | |
2749 | // So we cut the number of half-lines in a frame in half. :-P | |
2750 | uint16_t numHalfLines = ((vjs.hardwareTypeNTSC ? 525 : 625) * 2) / 2; | |
2751 | ||
2752 | if ((vc & 0x7FF) >= numHalfLines) | |
2753 | { | |
2754 | lowerField = !lowerField; | |
2755 | // If we're rendering the lower field, set the high bit (#11, counting | |
2756 | // from 0) of VC | |
2757 | vc = (lowerField ? 0x0800 : 0x0000); | |
2758 | } | |
2759 | ||
2760 | //WriteLog("HLC: Currently on line %u (VP=%u)...\n", vc, vp); | |
2761 | TOMWriteWord(0xF00006, vc, JAGUAR); | |
2762 | ||
2763 | // Time for Vertical Interrupt? | |
2764 | if ((vc & 0x7FF) == vi && (vc & 0x7FF) > 0 && TOMIRQEnabled(IRQ_VIDEO)) | |
2765 | { | |
2766 | // We don't have to worry about autovectors & whatnot because the Jaguar | |
2767 | // tells you through its HW registers who sent the interrupt... | |
2768 | TOMSetPendingVideoInt(); | |
2769 | m68k_set_irq(2); | |
2770 | } | |
2771 | ||
2772 | TOMExecHalfline(vc, true); | |
2773 | ||
2774 | //Change this to VBB??? | |
2775 | //Doesn't seem to matter (at least for Flip Out & I-War) | |
2776 | if ((vc & 0x7FF) == 0) | |
2777 | // if (vc == vbb) | |
2778 | { | |
2779 | JoystickExec(); | |
2780 | frameDone = true; | |
2781 | }//*/ | |
2782 | ||
2783 | SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); | |
2784 | } | |
2785 |