| 1 | // This is part of Pico Library\r |
| 2 | \r |
| 3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
| 4 | // (c) Copyright 2007 notaz, All rights reserved.\r |
| 5 | // Free for non-commercial use.\r |
| 6 | \r |
| 7 | // For commercial use, separate licencing terms must be obtained.\r |
| 8 | \r |
| 9 | // A68K no longer supported here\r |
| 10 | \r |
| 11 | //#define __debug_io\r |
| 12 | \r |
| 13 | #include "../PicoInt.h"\r |
| 14 | \r |
| 15 | #include "../sound/sound.h"\r |
| 16 | #include "../sound/ym2612.h"\r |
| 17 | #include "../sound/sn76496.h"\r |
| 18 | \r |
| 19 | #include "gfx_cd.h"\r |
| 20 | #include "pcm.h"\r |
| 21 | \r |
| 22 | #include "cell_map.c"\r |
| 23 | \r |
| 24 | typedef unsigned char u8;\r |
| 25 | typedef unsigned short u16;\r |
| 26 | typedef unsigned int u32;\r |
| 27 | \r |
| 28 | //#define __debug_io\r |
| 29 | //#define __debug_io2\r |
| 30 | \r |
| 31 | //#define rdprintf dprintf\r |
| 32 | #define rdprintf(...)\r |
| 33 | //#define wrdprintf dprintf\r |
| 34 | #define wrdprintf(...)\r |
| 35 | \r |
| 36 | // -----------------------------------------------------------------\r |
| 37 | \r |
| 38 | \r |
| 39 | static u32 m68k_reg_read16(u32 a)\r |
| 40 | {\r |
| 41 | u32 d=0;\r |
| 42 | a &= 0x3e;\r |
| 43 | // dprintf("m68k_regs r%2i: [%02x] @%06x", realsize&~1, a+(realsize&1), SekPc);\r |
| 44 | \r |
| 45 | switch (a) {\r |
| 46 | case 0:\r |
| 47 | d = ((Pico_mcd->s68k_regs[0x33]<<13)&0x8000) | Pico_mcd->m.busreq; // here IFL2 is always 0, just like in Gens\r |
| 48 | goto end;\r |
| 49 | case 2:\r |
| 50 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);\r |
| 51 | dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);\r |
| 52 | goto end;\r |
| 53 | case 4:\r |
| 54 | d = Pico_mcd->s68k_regs[4]<<8;\r |
| 55 | goto end;\r |
| 56 | case 6:\r |
| 57 | d = *(u16 *)(Pico_mcd->bios + 0x72);\r |
| 58 | goto end;\r |
| 59 | case 8:\r |
| 60 | d = Read_CDC_Host(0);\r |
| 61 | goto end;\r |
| 62 | case 0xA:\r |
| 63 | dprintf("m68k FIXME: reserved read");\r |
| 64 | goto end;\r |
| 65 | case 0xC:\r |
| 66 | dprintf("m68k stopwatch timer read");\r |
| 67 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
| 68 | goto end;\r |
| 69 | }\r |
| 70 | \r |
| 71 | if (a < 0x30) {\r |
| 72 | // comm flag/cmd/status (0xE-0x2F)\r |
| 73 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
| 74 | goto end;\r |
| 75 | }\r |
| 76 | \r |
| 77 | dprintf("m68k_regs FIXME invalid read @ %02x", a);\r |
| 78 | \r |
| 79 | end:\r |
| 80 | \r |
| 81 | // dprintf("ret = %04x", d);\r |
| 82 | return d;\r |
| 83 | }\r |
| 84 | \r |
| 85 | static void m68k_reg_write8(u32 a, u32 d)\r |
| 86 | {\r |
| 87 | a &= 0x3f;\r |
| 88 | // dprintf("m68k_regs w%2i: [%02x] %02x @%06x", realsize, a, d, SekPc);\r |
| 89 | \r |
| 90 | switch (a) {\r |
| 91 | case 0:\r |
| 92 | d &= 1;\r |
| 93 | if ((d&1) && (Pico_mcd->s68k_regs[0x33]&(1<<2))) { dprintf("m68k: s68k irq 2"); SekInterruptS68k(2); }\r |
| 94 | return;\r |
| 95 | case 1:\r |
| 96 | d &= 3;\r |
| 97 | if (!(d&1)) Pico_mcd->m.state_flags |= 1; // reset pending, needed to be sure we fetch the right vectors on reset\r |
| 98 | if ( (Pico_mcd->m.busreq&1) != (d&1)) dprintf("m68k: s68k reset %i", !(d&1));\r |
| 99 | if ( (Pico_mcd->m.busreq&2) != (d&2)) dprintf("m68k: s68k brq %i", (d&2)>>1);\r |
| 100 | if ((Pico_mcd->m.state_flags&1) && (d&3)==1) {\r |
| 101 | SekResetS68k(); // S68k comes out of RESET or BRQ state\r |
| 102 | Pico_mcd->m.state_flags&=~1;\r |
| 103 | dprintf("m68k: resetting s68k, cycles=%i", SekCyclesLeft);\r |
| 104 | }\r |
| 105 | Pico_mcd->m.busreq = d;\r |
| 106 | return;\r |
| 107 | case 2:\r |
| 108 | Pico_mcd->s68k_regs[2] = d; // really use s68k side register\r |
| 109 | return;\r |
| 110 | case 3: {\r |
| 111 | u32 dold = Pico_mcd->s68k_regs[3]&0x1f;\r |
| 112 | dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
| 113 | d &= 0xc2;\r |
| 114 | if ((dold>>6) != ((d>>6)&3))\r |
| 115 | dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));\r |
| 116 | //if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);\r |
| 117 | //if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :\r |
| 118 | // ((d&2) ? "word ram to s68k" : "word ram to m68k"));\r |
| 119 | if (dold & 4) {\r |
| 120 | d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing\r |
| 121 | } else {\r |
| 122 | //dold &= ~2; // ??\r |
| 123 | if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode\r |
| 124 | }\r |
| 125 | Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register\r |
| 126 | \r |
| 127 | /*\r |
| 128 | d |= Pico_mcd->s68k_regs[3]&0x1d;\r |
| 129 | if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode\r |
| 130 | Pico_mcd->s68k_regs[3] = d; // really use s68k side register\r |
| 131 | */\r |
| 132 | return;\r |
| 133 | }\r |
| 134 | case 6:\r |
| 135 | Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer\r |
| 136 | return;\r |
| 137 | case 7:\r |
| 138 | Pico_mcd->bios[0x72] = d;\r |
| 139 | dprintf("hint vector set to %08x", PicoRead32(0x70));\r |
| 140 | return;\r |
| 141 | case 0xe:\r |
| 142 | //dprintf("m68k: comm flag: %02x", d);\r |
| 143 | Pico_mcd->s68k_regs[0xe] = d;\r |
| 144 | return;\r |
| 145 | }\r |
| 146 | \r |
| 147 | if ((a&0xf0) == 0x10) {\r |
| 148 | Pico_mcd->s68k_regs[a] = d;\r |
| 149 | return;\r |
| 150 | }\r |
| 151 | \r |
| 152 | dprintf("m68k FIXME: invalid write? [%02x] %02x", a, d);\r |
| 153 | }\r |
| 154 | \r |
| 155 | \r |
| 156 | #define READ_FONT_DATA(basemask) \\r |
| 157 | { \\r |
| 158 | unsigned int fnt = *(unsigned int *)(Pico_mcd->s68k_regs + 0x4c); \\r |
| 159 | unsigned int col0 = (fnt >> 8) & 0x0f, col1 = (fnt >> 12) & 0x0f; \\r |
| 160 | if (fnt & (basemask << 0)) d = col1 ; else d = col0; \\r |
| 161 | if (fnt & (basemask << 1)) d |= col1 << 4; else d |= col0 << 4; \\r |
| 162 | if (fnt & (basemask << 2)) d |= col1 << 8; else d |= col0 << 8; \\r |
| 163 | if (fnt & (basemask << 3)) d |= col1 << 12; else d |= col0 << 12; \\r |
| 164 | }\r |
| 165 | \r |
| 166 | \r |
| 167 | static u32 s68k_reg_read16(u32 a)\r |
| 168 | {\r |
| 169 | u32 d=0;\r |
| 170 | \r |
| 171 | // dprintf("s68k_regs r%2i: [%02x] @ %06x", realsize&~1, a+(realsize&1), SekPcS68k);\r |
| 172 | \r |
| 173 | switch (a) {\r |
| 174 | case 0:\r |
| 175 | d = ((Pico_mcd->s68k_regs[0]&3)<<8) | 1; // ver = 0, not in reset state\r |
| 176 | goto end;\r |
| 177 | case 2:\r |
| 178 | d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0x1f);\r |
| 179 | dprintf("s68k_regs r3: %02x @%06x", (u8)d, SekPc);\r |
| 180 | goto end;\r |
| 181 | case 6:\r |
| 182 | d = CDC_Read_Reg();\r |
| 183 | goto end;\r |
| 184 | case 8:\r |
| 185 | d = Read_CDC_Host(1); // Gens returns 0 here on byte reads\r |
| 186 | goto end;\r |
| 187 | case 0xC:\r |
| 188 | dprintf("s68k stopwatch timer read");\r |
| 189 | d = Pico_mcd->m.timer_stopwatch >> 16;\r |
| 190 | goto end;\r |
| 191 | case 0x30:\r |
| 192 | dprintf("s68k int3 timer read");\r |
| 193 | break;\r |
| 194 | case 0x34: // fader\r |
| 195 | d = 0; // no busy bit\r |
| 196 | goto end;\r |
| 197 | case 0x50: // font data (check: Lunar 2, Silpheed)\r |
| 198 | READ_FONT_DATA(0x00100000);\r |
| 199 | goto end;\r |
| 200 | case 0x52:\r |
| 201 | READ_FONT_DATA(0x00010000);\r |
| 202 | goto end;\r |
| 203 | case 0x54:\r |
| 204 | READ_FONT_DATA(0x10000000);\r |
| 205 | goto end;\r |
| 206 | case 0x56:\r |
| 207 | READ_FONT_DATA(0x01000000);\r |
| 208 | goto end;\r |
| 209 | }\r |
| 210 | \r |
| 211 | d = (Pico_mcd->s68k_regs[a]<<8) | Pico_mcd->s68k_regs[a+1];\r |
| 212 | \r |
| 213 | end:\r |
| 214 | \r |
| 215 | // dprintf("ret = %04x", d);\r |
| 216 | \r |
| 217 | return d;\r |
| 218 | }\r |
| 219 | \r |
| 220 | static void s68k_reg_write8(u32 a, u32 d)\r |
| 221 | {\r |
| 222 | //dprintf("s68k_regs w%2i: [%02x] %02x @ %06x", realsize, a, d, SekPcS68k);\r |
| 223 | \r |
| 224 | // TODO: review against Gens\r |
| 225 | switch (a) {\r |
| 226 | case 2:\r |
| 227 | return; // only m68k can change WP\r |
| 228 | case 3: {\r |
| 229 | int dold = Pico_mcd->s68k_regs[3];\r |
| 230 | dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);\r |
| 231 | d &= 0x1d;\r |
| 232 | if (d&4) {\r |
| 233 | d |= dold&0xc2;\r |
| 234 | if ((d ^ dold) & 5) d &= ~2; // in case of mode or bank change we clear DMNA (m68k req) bit\r |
| 235 | if (!(dold & 4)) {\r |
| 236 | dprintf("wram mode 2M->1M");\r |
| 237 | wram_2M_to_1M(Pico_mcd->word_ram2M);\r |
| 238 | }\r |
| 239 | } else {\r |
| 240 | d |= Pico_mcd->s68k_regs[3]&0xc3;\r |
| 241 | if (d&1) d &= ~2; // return word RAM to m68k in 2M mode\r |
| 242 | if (dold & 4) {\r |
| 243 | dprintf("wram mode 1M->2M");\r |
| 244 | wram_1M_to_2M(Pico_mcd->word_ram2M);\r |
| 245 | }\r |
| 246 | }\r |
| 247 | break;\r |
| 248 | }\r |
| 249 | case 4:\r |
| 250 | dprintf("s68k CDC dest: %x", d&7);\r |
| 251 | Pico_mcd->s68k_regs[4] = (Pico_mcd->s68k_regs[4]&0xC0) | (d&7); // CDC mode\r |
| 252 | return;\r |
| 253 | case 5:\r |
| 254 | //dprintf("s68k CDC reg addr: %x", d&0xf);\r |
| 255 | break;\r |
| 256 | case 7:\r |
| 257 | CDC_Write_Reg(d);\r |
| 258 | return;\r |
| 259 | case 0xa:\r |
| 260 | dprintf("s68k set CDC dma addr");\r |
| 261 | break;\r |
| 262 | case 0xc:\r |
| 263 | case 0xd:\r |
| 264 | dprintf("s68k set stopwatch timer");\r |
| 265 | Pico_mcd->m.timer_stopwatch = 0;\r |
| 266 | return;\r |
| 267 | case 0xe:\r |
| 268 | Pico_mcd->s68k_regs[0Xf] = (d>>1) | (d<<7); // ror8, Gens note: Dragons lair\r |
| 269 | Pico_mcd->m.timer_stopwatch = 0;\r |
| 270 | return;\r |
| 271 | case 0x31:\r |
| 272 | dprintf("s68k set int3 timer: %02x", d);\r |
| 273 | Pico_mcd->m.timer_int3 = d << 16;\r |
| 274 | break;\r |
| 275 | case 0x33: // IRQ mask\r |
| 276 | dprintf("s68k irq mask: %02x", d);\r |
| 277 | if ((d&(1<<4)) && (Pico_mcd->s68k_regs[0x37]&4) && !(Pico_mcd->s68k_regs[0x33]&(1<<4))) {\r |
| 278 | CDD_Export_Status();\r |
| 279 | }\r |
| 280 | break;\r |
| 281 | case 0x34: // fader\r |
| 282 | Pico_mcd->s68k_regs[a] = (u8) d & 0x7f;\r |
| 283 | return;\r |
| 284 | case 0x36:\r |
| 285 | return; // d/m bit is unsetable\r |
| 286 | case 0x37: {\r |
| 287 | u32 d_old = Pico_mcd->s68k_regs[0x37];\r |
| 288 | Pico_mcd->s68k_regs[0x37] = d&7;\r |
| 289 | if ((d&4) && !(d_old&4)) {\r |
| 290 | CDD_Export_Status();\r |
| 291 | }\r |
| 292 | return;\r |
| 293 | }\r |
| 294 | case 0x4b:\r |
| 295 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
| 296 | CDD_Import_Command();\r |
| 297 | return;\r |
| 298 | }\r |
| 299 | \r |
| 300 | if ((a&0x1f0) == 0x10 || (a >= 0x38 && a < 0x42))\r |
| 301 | {\r |
| 302 | dprintf("s68k FIXME: invalid write @ %02x?", a);\r |
| 303 | return;\r |
| 304 | }\r |
| 305 | \r |
| 306 | Pico_mcd->s68k_regs[a] = (u8) d;\r |
| 307 | }\r |
| 308 | \r |
| 309 | \r |
| 310 | \r |
| 311 | static u32 OtherRead16End(u32 a, int realsize)\r |
| 312 | {\r |
| 313 | u32 d=0;\r |
| 314 | \r |
| 315 | if ((a&0xffffc0)==0xa12000) {\r |
| 316 | d=m68k_reg_read16(a);\r |
| 317 | goto end;\r |
| 318 | }\r |
| 319 | \r |
| 320 | dprintf("m68k FIXME: unusual r%i: %06x @%06x", realsize&~1, (a&0xfffffe)+(realsize&1), SekPc);\r |
| 321 | \r |
| 322 | end:\r |
| 323 | return d;\r |
| 324 | }\r |
| 325 | \r |
| 326 | \r |
| 327 | static void OtherWrite8End(u32 a, u32 d, int realsize)\r |
| 328 | {\r |
| 329 | if ((a&0xffffc0)==0xa12000) { m68k_reg_write8(a, d); return; }\r |
| 330 | \r |
| 331 | dprintf("m68k FIXME: strange w%i: %06x, %08x @%06x", realsize, a&0xffffff, d, SekPc);\r |
| 332 | }\r |
| 333 | \r |
| 334 | \r |
| 335 | #undef _ASM_MEMORY_C\r |
| 336 | #include "../MemoryCmn.c"\r |
| 337 | \r |
| 338 | \r |
| 339 | // -----------------------------------------------------------------\r |
| 340 | // Read Rom and read Ram\r |
| 341 | \r |
| 342 | u8 PicoReadM68k8(u32 a)\r |
| 343 | {\r |
| 344 | u32 d=0;\r |
| 345 | \r |
| 346 | if ((a&0xe00000)==0xe00000) { d = *(u8 *)(Pico.ram+((a^1)&0xffff)); goto end; } // Ram\r |
| 347 | \r |
| 348 | a&=0xffffff;\r |
| 349 | \r |
| 350 | if (a < 0x20000) { d = *(u8 *)(Pico_mcd->bios+(a^1)); goto end; } // bios\r |
| 351 | \r |
| 352 | // prg RAM\r |
| 353 | if ((a&0xfe0000)==0x020000) {\r |
| 354 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 355 | d = *(prg_bank+((a^1)&0x1ffff));\r |
| 356 | goto end;\r |
| 357 | }\r |
| 358 | \r |
| 359 | #if 0\r |
| 360 | if (a == 0x200000 && SekPc == 0xff0b66 && Pico.m.frame_count > 1000)\r |
| 361 | {\r |
| 362 | int i;\r |
| 363 | FILE *ff;\r |
| 364 | unsigned short *ram = (unsigned short *) Pico.ram;\r |
| 365 | // unswap and dump RAM\r |
| 366 | for (i = 0; i < 0x10000/2; i++)\r |
| 367 | ram[i] = (ram[i]>>8) | (ram[i]<<8);\r |
| 368 | ff = fopen("ram.bin", "wb");\r |
| 369 | fwrite(ram, 1, 0x10000, ff);\r |
| 370 | fclose(ff);\r |
| 371 | exit(0);\r |
| 372 | }\r |
| 373 | #endif\r |
| 374 | \r |
| 375 | // word RAM\r |
| 376 | if ((a&0xfc0000)==0x200000) {\r |
| 377 | wrdprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r |
| 378 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 379 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 380 | if (a >= 0x220000)\r |
| 381 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
| 382 | else a &= 0x1ffff;\r |
| 383 | d = Pico_mcd->word_ram1M[bank][a^1];\r |
| 384 | } else {\r |
| 385 | // allow access in any mode, like Gens does\r |
| 386 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
| 387 | }\r |
| 388 | wrdprintf("ret = %02x", (u8)d);\r |
| 389 | goto end;\r |
| 390 | }\r |
| 391 | \r |
| 392 | if ((a&0xff4000)==0xa00000) { d=z80Read8(a); goto end; } // Z80 Ram\r |
| 393 | \r |
| 394 | if ((a&0xffffc0)==0xa12000)\r |
| 395 | rdprintf("m68k_regs r8: [%02x] @%06x", a&0x3f, SekPc);\r |
| 396 | \r |
| 397 | d=OtherRead16(a&~1, 8|(a&1)); if ((a&1)==0) d>>=8;\r |
| 398 | \r |
| 399 | if ((a&0xffffc0)==0xa12000)\r |
| 400 | rdprintf("ret = %02x", (u8)d);\r |
| 401 | \r |
| 402 | end:\r |
| 403 | \r |
| 404 | #ifdef __debug_io\r |
| 405 | dprintf("r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPc);\r |
| 406 | #endif\r |
| 407 | return (u8)d;\r |
| 408 | }\r |
| 409 | \r |
| 410 | \r |
| 411 | u16 PicoReadM68k16(u32 a)\r |
| 412 | {\r |
| 413 | u16 d=0;\r |
| 414 | \r |
| 415 | if ((a&0xe00000)==0xe00000) { d=*(u16 *)(Pico.ram+(a&0xfffe)); goto end; } // Ram\r |
| 416 | \r |
| 417 | a&=0xfffffe;\r |
| 418 | \r |
| 419 | if (a < 0x20000) { d = *(u16 *)(Pico_mcd->bios+a); goto end; } // bios\r |
| 420 | \r |
| 421 | // prg RAM\r |
| 422 | if ((a&0xfe0000)==0x020000) {\r |
| 423 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 424 | d = *(u16 *)(prg_bank+(a&0x1fffe));\r |
| 425 | goto end;\r |
| 426 | }\r |
| 427 | \r |
| 428 | // word RAM\r |
| 429 | if ((a&0xfc0000)==0x200000) {\r |
| 430 | wrdprintf("m68k_wram r16: [%06x] @%06x", a, SekPc);\r |
| 431 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 432 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 433 | if (a >= 0x220000)\r |
| 434 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
| 435 | else a &= 0x1fffe;\r |
| 436 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a);\r |
| 437 | } else {\r |
| 438 | // allow access in any mode, like Gens does\r |
| 439 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 440 | }\r |
| 441 | wrdprintf("ret = %04x", d);\r |
| 442 | goto end;\r |
| 443 | }\r |
| 444 | \r |
| 445 | if ((a&0xffffc0)==0xa12000)\r |
| 446 | rdprintf("m68k_regs r16: [%02x] @%06x", a&0x3f, SekPc);\r |
| 447 | \r |
| 448 | d = (u16)OtherRead16(a, 16);\r |
| 449 | \r |
| 450 | if ((a&0xffffc0)==0xa12000)\r |
| 451 | rdprintf("ret = %04x", d);\r |
| 452 | \r |
| 453 | end:\r |
| 454 | \r |
| 455 | #ifdef __debug_io\r |
| 456 | dprintf("r16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
| 457 | #endif\r |
| 458 | return d;\r |
| 459 | }\r |
| 460 | \r |
| 461 | \r |
| 462 | u32 PicoReadM68k32(u32 a)\r |
| 463 | {\r |
| 464 | u32 d=0;\r |
| 465 | \r |
| 466 | if ((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); d = (pm[0]<<16)|pm[1]; goto end; } // Ram\r |
| 467 | \r |
| 468 | a&=0xfffffe;\r |
| 469 | \r |
| 470 | if (a < 0x20000) { u16 *pm=(u16 *)(Pico_mcd->bios+a); d = (pm[0]<<16)|pm[1]; goto end; } // bios\r |
| 471 | \r |
| 472 | // prg RAM\r |
| 473 | if ((a&0xfe0000)==0x020000) {\r |
| 474 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 475 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
| 476 | d = (pm[0]<<16)|pm[1];\r |
| 477 | goto end;\r |
| 478 | }\r |
| 479 | \r |
| 480 | // word RAM\r |
| 481 | if ((a&0xfc0000)==0x200000) {\r |
| 482 | wrdprintf("m68k_wram r32: [%06x] @%06x", a, SekPc);\r |
| 483 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 484 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 485 | if (a >= 0x220000) { // cell arranged\r |
| 486 | u32 a1, a2;\r |
| 487 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
| 488 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
| 489 | else a2 = a1 + 2;\r |
| 490 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) << 16;\r |
| 491 | d |= *(u16 *)(Pico_mcd->word_ram1M[bank]+a2);\r |
| 492 | } else {\r |
| 493 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
| 494 | }\r |
| 495 | } else {\r |
| 496 | // allow access in any mode, like Gens does\r |
| 497 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
| 498 | }\r |
| 499 | wrdprintf("ret = %08x", d);\r |
| 500 | goto end;\r |
| 501 | }\r |
| 502 | \r |
| 503 | if ((a&0xffffc0)==0xa12000)\r |
| 504 | rdprintf("m68k_regs r32: [%02x] @%06x", a&0x3f, SekPc);\r |
| 505 | \r |
| 506 | d = (OtherRead16(a, 32)<<16)|OtherRead16(a+2, 32);\r |
| 507 | \r |
| 508 | if ((a&0xffffc0)==0xa12000)\r |
| 509 | rdprintf("ret = %08x", d);\r |
| 510 | \r |
| 511 | end:\r |
| 512 | #ifdef __debug_io\r |
| 513 | dprintf("r32: %06x, %08x @%06x", a&0xffffff, d, SekPc);\r |
| 514 | #endif\r |
| 515 | return d;\r |
| 516 | }\r |
| 517 | \r |
| 518 | \r |
| 519 | // -----------------------------------------------------------------\r |
| 520 | // Write Ram\r |
| 521 | \r |
| 522 | void PicoWriteM68k8(u32 a,u8 d)\r |
| 523 | {\r |
| 524 | #ifdef __debug_io\r |
| 525 | dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
| 526 | #endif\r |
| 527 | //if ((a&0xe0ffff)==0xe0a9ba+0x69c)\r |
| 528 | // dprintf("w8 : %06x, %02x @%06x", a&0xffffff, d, SekPc);\r |
| 529 | \r |
| 530 | \r |
| 531 | if ((a&0xe00000)==0xe00000) { // Ram\r |
| 532 | *(u8 *)(Pico.ram+((a^1)&0xffff)) = d;\r |
| 533 | return;\r |
| 534 | }\r |
| 535 | \r |
| 536 | a&=0xffffff;\r |
| 537 | \r |
| 538 | // prg RAM\r |
| 539 | if ((a&0xfe0000)==0x020000) {\r |
| 540 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 541 | *(u8 *)(prg_bank+((a^1)&0x1ffff))=d;\r |
| 542 | return;\r |
| 543 | }\r |
| 544 | \r |
| 545 | // word RAM\r |
| 546 | if ((a&0xfc0000)==0x200000) {\r |
| 547 | wrdprintf("m68k_wram w8: [%06x] %02x @%06x", a, d, SekPc);\r |
| 548 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 549 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 550 | if (a >= 0x220000)\r |
| 551 | a = (a&3) | (cell_map(a >> 2) << 2); // cell arranged\r |
| 552 | else a &= 0x1ffff;\r |
| 553 | *(u8 *)(Pico_mcd->word_ram1M[bank]+(a^1))=d;\r |
| 554 | } else {\r |
| 555 | // allow access in any mode, like Gens does\r |
| 556 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
| 557 | }\r |
| 558 | return;\r |
| 559 | }\r |
| 560 | \r |
| 561 | if ((a&0xffffc0)==0xa12000)\r |
| 562 | rdprintf("m68k_regs w8: [%02x] %02x @%06x", a&0x3f, d, SekPc);\r |
| 563 | \r |
| 564 | OtherWrite8(a,d,8);\r |
| 565 | }\r |
| 566 | \r |
| 567 | \r |
| 568 | void PicoWriteM68k16(u32 a,u16 d)\r |
| 569 | {\r |
| 570 | #ifdef __debug_io\r |
| 571 | dprintf("w16: %06x, %04x", a&0xffffff, d);\r |
| 572 | #endif\r |
| 573 | // dprintf("w16: %06x, %04x @%06x", a&0xffffff, d, SekPc);\r |
| 574 | \r |
| 575 | if ((a&0xe00000)==0xe00000) { // Ram\r |
| 576 | *(u16 *)(Pico.ram+(a&0xfffe))=d;\r |
| 577 | return;\r |
| 578 | }\r |
| 579 | \r |
| 580 | a&=0xfffffe;\r |
| 581 | \r |
| 582 | // prg RAM\r |
| 583 | if ((a&0xfe0000)==0x020000) {\r |
| 584 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 585 | *(u16 *)(prg_bank+(a&0x1fffe))=d;\r |
| 586 | return;\r |
| 587 | }\r |
| 588 | \r |
| 589 | // word RAM\r |
| 590 | if ((a&0xfc0000)==0x200000) {\r |
| 591 | wrdprintf("m68k_wram w16: [%06x] %04x @%06x", a, d, SekPc);\r |
| 592 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 593 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 594 | if (a >= 0x220000)\r |
| 595 | a = (a&2) | (cell_map(a >> 2) << 2); // cell arranged\r |
| 596 | else a &= 0x1fffe;\r |
| 597 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a)=d;\r |
| 598 | } else {\r |
| 599 | // allow access in any mode, like Gens does\r |
| 600 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
| 601 | }\r |
| 602 | return;\r |
| 603 | }\r |
| 604 | \r |
| 605 | if ((a&0xffffc0)==0xa12000)\r |
| 606 | rdprintf("m68k_regs w16: [%02x] %04x @%06x", a&0x3f, d, SekPc);\r |
| 607 | \r |
| 608 | OtherWrite16(a,d);\r |
| 609 | }\r |
| 610 | \r |
| 611 | \r |
| 612 | void PicoWriteM68k32(u32 a,u32 d)\r |
| 613 | {\r |
| 614 | #ifdef __debug_io\r |
| 615 | dprintf("w32: %06x, %08x", a&0xffffff, d);\r |
| 616 | #endif\r |
| 617 | \r |
| 618 | if ((a&0xe00000)==0xe00000)\r |
| 619 | {\r |
| 620 | // Ram:\r |
| 621 | u16 *pm=(u16 *)(Pico.ram+(a&0xfffe));\r |
| 622 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 623 | return;\r |
| 624 | }\r |
| 625 | \r |
| 626 | a&=0xfffffe;\r |
| 627 | \r |
| 628 | // prg RAM\r |
| 629 | if ((a&0xfe0000)==0x020000) {\r |
| 630 | u8 *prg_bank = Pico_mcd->prg_ram_b[Pico_mcd->s68k_regs[3]>>6];\r |
| 631 | u16 *pm=(u16 *)(prg_bank+(a&0x1fffe));\r |
| 632 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 633 | return;\r |
| 634 | }\r |
| 635 | \r |
| 636 | // word RAM\r |
| 637 | if ((a&0xfc0000)==0x200000) {\r |
| 638 | if (d != 0) // don't log clears\r |
| 639 | wrdprintf("m68k_wram w32: [%06x] %08x @%06x", a, d, SekPc);\r |
| 640 | if (Pico_mcd->s68k_regs[3]&4) { // 1M mode?\r |
| 641 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 642 | if (a >= 0x220000) { // cell arranged\r |
| 643 | u32 a1, a2;\r |
| 644 | a1 = (a&2) | (cell_map(a >> 2) << 2);\r |
| 645 | if (a&2) a2 = cell_map((a+2) >> 2) << 2;\r |
| 646 | else a2 = a1 + 2;\r |
| 647 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a1) = d >> 16;\r |
| 648 | *(u16 *)(Pico_mcd->word_ram1M[bank]+a2) = d;\r |
| 649 | } else {\r |
| 650 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 651 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 652 | }\r |
| 653 | } else {\r |
| 654 | // allow access in any mode, like Gens does\r |
| 655 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 656 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 657 | }\r |
| 658 | return;\r |
| 659 | }\r |
| 660 | \r |
| 661 | if ((a&0xffffc0)==0xa12000)\r |
| 662 | rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r |
| 663 | \r |
| 664 | OtherWrite16(a, (u16)(d>>16));\r |
| 665 | OtherWrite16(a+2,(u16)d);\r |
| 666 | }\r |
| 667 | \r |
| 668 | \r |
| 669 | // -----------------------------------------------------------------\r |
| 670 | \r |
| 671 | \r |
| 672 | u8 PicoReadS68k8(u32 a)\r |
| 673 | {\r |
| 674 | u32 d=0;\r |
| 675 | \r |
| 676 | a&=0xffffff;\r |
| 677 | \r |
| 678 | // prg RAM\r |
| 679 | if (a < 0x80000) {\r |
| 680 | d = *(Pico_mcd->prg_ram+(a^1));\r |
| 681 | goto end;\r |
| 682 | }\r |
| 683 | \r |
| 684 | // regs\r |
| 685 | if ((a&0xfffe00) == 0xff8000) {\r |
| 686 | a &= 0x1ff;\r |
| 687 | rdprintf("s68k_regs r8: [%02x] @ %06x", a, SekPcS68k);\r |
| 688 | if (a >= 0x58 && a < 0x68)\r |
| 689 | d = gfx_cd_read(a&~1);\r |
| 690 | else d = s68k_reg_read16(a&~1);\r |
| 691 | if ((a&1)==0) d>>=8;\r |
| 692 | rdprintf("ret = %02x", (u8)d);\r |
| 693 | goto end;\r |
| 694 | }\r |
| 695 | \r |
| 696 | // word RAM (2M area)\r |
| 697 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 698 | // test: batman returns\r |
| 699 | wrdprintf("s68k_wram2M r8: [%06x] @%06x", a, SekPcS68k);\r |
| 700 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
| 701 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 702 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
| 703 | if (a&1) d &= 0x0f;\r |
| 704 | else d >>= 4;\r |
| 705 | dprintf("FIXME: decode");\r |
| 706 | } else {\r |
| 707 | // allow access in any mode, like Gens does\r |
| 708 | d = Pico_mcd->word_ram2M[(a^1)&0x3ffff];\r |
| 709 | }\r |
| 710 | wrdprintf("ret = %02x", (u8)d);\r |
| 711 | goto end;\r |
| 712 | }\r |
| 713 | \r |
| 714 | // word RAM (1M area)\r |
| 715 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 716 | int bank;\r |
| 717 | wrdprintf("s68k_wram1M r8: [%06x] @%06x", a, SekPcS68k);\r |
| 718 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 719 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 720 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 721 | d = Pico_mcd->word_ram1M[bank][(a^1)&0x1ffff];\r |
| 722 | wrdprintf("ret = %02x", (u8)d);\r |
| 723 | goto end;\r |
| 724 | }\r |
| 725 | \r |
| 726 | // PCM\r |
| 727 | if ((a&0xff8000)==0xff0000) {\r |
| 728 | dprintf("s68k_pcm r8: [%06x] @%06x", a, SekPcS68k);\r |
| 729 | a &= 0x7fff;\r |
| 730 | if (a >= 0x2000)\r |
| 731 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
| 732 | else if (a >= 0x20) {\r |
| 733 | a &= 0x1e;\r |
| 734 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
| 735 | if (a & 2) d >>= 8;\r |
| 736 | }\r |
| 737 | dprintf("ret = %02x", (u8)d);\r |
| 738 | goto end;\r |
| 739 | }\r |
| 740 | \r |
| 741 | // bram\r |
| 742 | if ((a&0xff0000)==0xfe0000) {\r |
| 743 | d = Pico_mcd->bram[(a>>1)&0x1fff];\r |
| 744 | goto end;\r |
| 745 | }\r |
| 746 | \r |
| 747 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
| 748 | \r |
| 749 | end:\r |
| 750 | \r |
| 751 | #ifdef __debug_io2\r |
| 752 | dprintf("s68k r8 : %06x, %02x @%06x", a&0xffffff, (u8)d, SekPcS68k);\r |
| 753 | #endif\r |
| 754 | return (u8)d;\r |
| 755 | }\r |
| 756 | \r |
| 757 | \r |
| 758 | u16 PicoReadS68k16(u32 a)\r |
| 759 | {\r |
| 760 | u32 d=0;\r |
| 761 | \r |
| 762 | a&=0xfffffe;\r |
| 763 | \r |
| 764 | // prg RAM\r |
| 765 | if (a < 0x80000) {\r |
| 766 | d = *(u16 *)(Pico_mcd->prg_ram+a);\r |
| 767 | goto end;\r |
| 768 | }\r |
| 769 | \r |
| 770 | // regs\r |
| 771 | if ((a&0xfffe00) == 0xff8000) {\r |
| 772 | a &= 0x1fe;\r |
| 773 | rdprintf("s68k_regs r16: [%02x] @ %06x", a, SekPcS68k);\r |
| 774 | if (a >= 0x58 && a < 0x68)\r |
| 775 | d = gfx_cd_read(a);\r |
| 776 | else d = s68k_reg_read16(a);\r |
| 777 | rdprintf("ret = %04x", d);\r |
| 778 | goto end;\r |
| 779 | }\r |
| 780 | \r |
| 781 | // word RAM (2M area)\r |
| 782 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 783 | wrdprintf("s68k_wram2M r16: [%06x] @%06x", a, SekPcS68k);\r |
| 784 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
| 785 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 786 | d = Pico_mcd->word_ram1M[bank][((a>>1)^1)&0x1ffff];\r |
| 787 | d |= d << 4; d &= ~0xf0;\r |
| 788 | dprintf("FIXME: decode");\r |
| 789 | } else {\r |
| 790 | // allow access in any mode, like Gens does\r |
| 791 | d = *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 792 | }\r |
| 793 | wrdprintf("ret = %04x", d);\r |
| 794 | goto end;\r |
| 795 | }\r |
| 796 | \r |
| 797 | // word RAM (1M area)\r |
| 798 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 799 | int bank;\r |
| 800 | wrdprintf("s68k_wram1M r16: [%06x] @%06x", a, SekPcS68k);\r |
| 801 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 802 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 803 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 804 | d = *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 805 | wrdprintf("ret = %04x", d);\r |
| 806 | goto end;\r |
| 807 | }\r |
| 808 | \r |
| 809 | // bram\r |
| 810 | if ((a&0xff0000)==0xfe0000) {\r |
| 811 | dprintf("s68k_bram r16: [%06x] @%06x", a, SekPcS68k);\r |
| 812 | a = (a>>1)&0x1fff;\r |
| 813 | d = Pico_mcd->bram[a++]; // Gens does little endian here, and so do we..\r |
| 814 | d|= Pico_mcd->bram[a++] << 8;\r |
| 815 | dprintf("ret = %04x", d);\r |
| 816 | goto end;\r |
| 817 | }\r |
| 818 | \r |
| 819 | // PCM\r |
| 820 | if ((a&0xff8000)==0xff0000) {\r |
| 821 | dprintf("s68k_pcm r16: [%06x] @%06x", a, SekPcS68k);\r |
| 822 | a &= 0x7fff;\r |
| 823 | if (a >= 0x2000)\r |
| 824 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff];\r |
| 825 | else if (a >= 0x20) {\r |
| 826 | a &= 0x1e;\r |
| 827 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
| 828 | if (a & 2) d >>= 8;\r |
| 829 | }\r |
| 830 | dprintf("ret = %04x", d);\r |
| 831 | goto end;\r |
| 832 | }\r |
| 833 | \r |
| 834 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 835 | \r |
| 836 | end:\r |
| 837 | \r |
| 838 | #ifdef __debug_io2\r |
| 839 | dprintf("s68k r16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 840 | #endif\r |
| 841 | return d;\r |
| 842 | }\r |
| 843 | \r |
| 844 | \r |
| 845 | u32 PicoReadS68k32(u32 a)\r |
| 846 | {\r |
| 847 | u32 d=0;\r |
| 848 | \r |
| 849 | a&=0xfffffe;\r |
| 850 | \r |
| 851 | // prg RAM\r |
| 852 | if (a < 0x80000) {\r |
| 853 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
| 854 | d = (pm[0]<<16)|pm[1];\r |
| 855 | goto end;\r |
| 856 | }\r |
| 857 | \r |
| 858 | // regs\r |
| 859 | if ((a&0xfffe00) == 0xff8000) {\r |
| 860 | a &= 0x1fe;\r |
| 861 | rdprintf("s68k_regs r32: [%02x] @ %06x", a, SekPcS68k);\r |
| 862 | if (a >= 0x58 && a < 0x68)\r |
| 863 | d = (gfx_cd_read(a)<<16)|gfx_cd_read(a+2);\r |
| 864 | else d = (s68k_reg_read16(a)<<16)|s68k_reg_read16(a+2);\r |
| 865 | rdprintf("ret = %08x", d);\r |
| 866 | goto end;\r |
| 867 | }\r |
| 868 | \r |
| 869 | // word RAM (2M area)\r |
| 870 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 871 | wrdprintf("s68k_wram2M r32: [%06x] @%06x", a, SekPcS68k);\r |
| 872 | if (Pico_mcd->s68k_regs[3]&4) { // 1M decode mode?\r |
| 873 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 874 | a >>= 1;\r |
| 875 | d = Pico_mcd->word_ram1M[bank][((a+0)^1)&0x1ffff] << 16;\r |
| 876 | d |= Pico_mcd->word_ram1M[bank][((a+1)^1)&0x1ffff];\r |
| 877 | d |= d << 4; d &= 0x0f0f0f0f;\r |
| 878 | dprintf("FIXME: decode");\r |
| 879 | } else {\r |
| 880 | // allow access in any mode, like Gens does\r |
| 881 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); d = (pm[0]<<16)|pm[1];\r |
| 882 | }\r |
| 883 | wrdprintf("ret = %08x", d);\r |
| 884 | goto end;\r |
| 885 | }\r |
| 886 | \r |
| 887 | // word RAM (1M area)\r |
| 888 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 889 | int bank;\r |
| 890 | wrdprintf("s68k_wram1M r32: [%06x] @%06x", a, SekPcS68k);\r |
| 891 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 892 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 893 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 894 | u16 *pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe)); d = (pm[0]<<16)|pm[1];\r |
| 895 | wrdprintf("ret = %08x", d);\r |
| 896 | goto end;\r |
| 897 | }\r |
| 898 | \r |
| 899 | // PCM\r |
| 900 | if ((a&0xff8000)==0xff0000) {\r |
| 901 | dprintf("s68k_pcm r32: [%06x] @%06x", a, SekPcS68k);\r |
| 902 | a &= 0x7fff;\r |
| 903 | if (a >= 0x2000) {\r |
| 904 | a >>= 1;\r |
| 905 | d = Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] << 16;\r |
| 906 | d |= Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff];\r |
| 907 | } else if (a >= 0x20) {\r |
| 908 | a &= 0x1e;\r |
| 909 | if (a & 2) {\r |
| 910 | a >>= 2;\r |
| 911 | d = (Pico_mcd->pcm.ch[a].addr >> (PCM_STEP_SHIFT-8)) & 0xff0000;\r |
| 912 | d |= (Pico_mcd->pcm.ch[(a+1)&7].addr >> PCM_STEP_SHIFT) & 0xff;\r |
| 913 | } else {\r |
| 914 | d = Pico_mcd->pcm.ch[a>>2].addr >> PCM_STEP_SHIFT;\r |
| 915 | d = ((d<<16)&0xff0000) | ((d>>8)&0xff); // PCM chip is LE\r |
| 916 | }\r |
| 917 | }\r |
| 918 | dprintf("ret = %08x", d);\r |
| 919 | goto end;\r |
| 920 | }\r |
| 921 | \r |
| 922 | // bram\r |
| 923 | if ((a&0xff0000)==0xfe0000) {\r |
| 924 | dprintf("s68k_bram r32: [%06x] @%06x", a, SekPcS68k);\r |
| 925 | a = (a>>1)&0x1fff;\r |
| 926 | d = Pico_mcd->bram[a++] << 16; // middle endian? TODO: verify against Fusion..\r |
| 927 | d|= Pico_mcd->bram[a++] << 24;\r |
| 928 | d|= Pico_mcd->bram[a++];\r |
| 929 | d|= Pico_mcd->bram[a++] << 8;\r |
| 930 | dprintf("ret = %08x", d);\r |
| 931 | goto end;\r |
| 932 | }\r |
| 933 | \r |
| 934 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 935 | \r |
| 936 | end:\r |
| 937 | \r |
| 938 | #ifdef __debug_io2\r |
| 939 | dprintf("s68k r32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 940 | #endif\r |
| 941 | return d;\r |
| 942 | }\r |
| 943 | \r |
| 944 | \r |
| 945 | /* check: jaguar xj 220 (draws entire world using decode) */\r |
| 946 | static void decode_write8(u32 a, u8 d, int r3)\r |
| 947 | {\r |
| 948 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
| 949 | u8 oldmask = (a&1) ? 0xf0 : 0x0f;\r |
| 950 | \r |
| 951 | r3 &= 0x18;\r |
| 952 | d &= 0x0f;\r |
| 953 | if (!(a&1)) d <<= 4;\r |
| 954 | \r |
| 955 | //dprintf("FIXME: decode, r3 = %02x", r3);\r |
| 956 | \r |
| 957 | if (r3 == 8) {\r |
| 958 | if ((!(*pd & (~oldmask))) && d) goto do_it;\r |
| 959 | } else if (r3 > 8) {\r |
| 960 | if (d) goto do_it;\r |
| 961 | } else {\r |
| 962 | goto do_it;\r |
| 963 | }\r |
| 964 | \r |
| 965 | return;\r |
| 966 | do_it:\r |
| 967 | *pd = d | (*pd & oldmask);\r |
| 968 | }\r |
| 969 | \r |
| 970 | \r |
| 971 | static void decode_write16(u32 a, u16 d, int r3)\r |
| 972 | {\r |
| 973 | u8 *pd = Pico_mcd->word_ram1M[!(r3 & 1)] + (((a>>1)^1)&0x1ffff);\r |
| 974 | \r |
| 975 | //if ((a & 0x3ffff) < 0x28000) return;\r |
| 976 | \r |
| 977 | r3 &= 0x18;\r |
| 978 | d &= 0x0f0f;\r |
| 979 | d |= d >> 4;\r |
| 980 | \r |
| 981 | if (r3 == 8) {\r |
| 982 | u8 dold = *pd;\r |
| 983 | if (!(dold & 0xf0)) dold |= d & 0xf0;\r |
| 984 | if (!(dold & 0x0f)) dold |= d & 0x0f;\r |
| 985 | *pd = dold;\r |
| 986 | } else if (r3 > 8) {\r |
| 987 | u8 dold = *pd;\r |
| 988 | if (!(d & 0xf0)) d |= dold & 0xf0;\r |
| 989 | if (!(d & 0x0f)) d |= dold & 0x0f;\r |
| 990 | *pd = d;\r |
| 991 | } else {\r |
| 992 | *pd = d;\r |
| 993 | }\r |
| 994 | \r |
| 995 | //dprintf("FIXME: decode");\r |
| 996 | }\r |
| 997 | \r |
| 998 | \r |
| 999 | // -----------------------------------------------------------------\r |
| 1000 | \r |
| 1001 | void PicoWriteS68k8(u32 a,u8 d)\r |
| 1002 | {\r |
| 1003 | #ifdef __debug_io2\r |
| 1004 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1005 | #endif\r |
| 1006 | \r |
| 1007 | a&=0xffffff;\r |
| 1008 | \r |
| 1009 | // prg RAM\r |
| 1010 | if (a < 0x80000) {\r |
| 1011 | u8 *pm=(u8 *)(Pico_mcd->prg_ram+(a^1));\r |
| 1012 | *pm=d;\r |
| 1013 | return;\r |
| 1014 | }\r |
| 1015 | \r |
| 1016 | // regs\r |
| 1017 | if ((a&0xfffe00) == 0xff8000) {\r |
| 1018 | a &= 0x1ff;\r |
| 1019 | rdprintf("s68k_regs w8: [%02x] %02x @ %06x", a, d, SekPcS68k);\r |
| 1020 | if (a >= 0x58 && a < 0x68)\r |
| 1021 | gfx_cd_write(a&~1, (d<<8)|d);\r |
| 1022 | else s68k_reg_write8(a,d);\r |
| 1023 | return;\r |
| 1024 | }\r |
| 1025 | \r |
| 1026 | // word RAM (2M area)\r |
| 1027 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 1028 | int r3 = Pico_mcd->s68k_regs[3];\r |
| 1029 | wrdprintf("s68k_wram2M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
| 1030 | if (r3 & 4) { // 1M decode mode?\r |
| 1031 | decode_write8(a, d, r3);\r |
| 1032 | } else {\r |
| 1033 | // allow access in any mode, like Gens does\r |
| 1034 | *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff))=d;\r |
| 1035 | }\r |
| 1036 | return;\r |
| 1037 | }\r |
| 1038 | \r |
| 1039 | // word RAM (1M area)\r |
| 1040 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 1041 | // Wing Commander tries to write here in wrong mode\r |
| 1042 | int bank;\r |
| 1043 | if (d)\r |
| 1044 | wrdprintf("s68k_wram1M w8: [%06x] %02x @%06x", a, d, SekPcS68k);\r |
| 1045 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 1046 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 1047 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1048 | *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff))=d;\r |
| 1049 | return;\r |
| 1050 | }\r |
| 1051 | \r |
| 1052 | // PCM\r |
| 1053 | if ((a&0xff8000)==0xff0000) {\r |
| 1054 | a &= 0x7fff;\r |
| 1055 | if (a >= 0x2000)\r |
| 1056 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
| 1057 | else if (a < 0x12)\r |
| 1058 | pcm_write(a>>1, d);\r |
| 1059 | return;\r |
| 1060 | }\r |
| 1061 | \r |
| 1062 | // bram\r |
| 1063 | if ((a&0xff0000)==0xfe0000) {\r |
| 1064 | Pico_mcd->bram[(a>>1)&0x1fff] = d;\r |
| 1065 | SRam.changed = 1;\r |
| 1066 | return;\r |
| 1067 | }\r |
| 1068 | \r |
| 1069 | dprintf("s68k w8 : %06x, %02x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1070 | }\r |
| 1071 | \r |
| 1072 | \r |
| 1073 | void PicoWriteS68k16(u32 a,u16 d)\r |
| 1074 | {\r |
| 1075 | #ifdef __debug_io2\r |
| 1076 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1077 | #endif\r |
| 1078 | \r |
| 1079 | a&=0xfffffe;\r |
| 1080 | \r |
| 1081 | // prg RAM\r |
| 1082 | if (a < 0x80000) {\r |
| 1083 | *(u16 *)(Pico_mcd->prg_ram+a)=d;\r |
| 1084 | return;\r |
| 1085 | }\r |
| 1086 | \r |
| 1087 | // regs\r |
| 1088 | if ((a&0xfffe00) == 0xff8000) {\r |
| 1089 | a &= 0x1fe;\r |
| 1090 | rdprintf("s68k_regs w16: [%02x] %04x @ %06x", a, d, SekPcS68k);\r |
| 1091 | if (a >= 0x58 && a < 0x68)\r |
| 1092 | gfx_cd_write(a, d);\r |
| 1093 | else {\r |
| 1094 | if (a == 0xe) { // special case, 2 byte writes would be handled differently\r |
| 1095 | Pico_mcd->s68k_regs[0xf] = d;\r |
| 1096 | return;\r |
| 1097 | }\r |
| 1098 | s68k_reg_write8(a, d>>8);\r |
| 1099 | s68k_reg_write8(a+1,d&0xff);\r |
| 1100 | }\r |
| 1101 | return;\r |
| 1102 | }\r |
| 1103 | \r |
| 1104 | // word RAM (2M area)\r |
| 1105 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 1106 | int r3 = Pico_mcd->s68k_regs[3];\r |
| 1107 | wrdprintf("s68k_wram2M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
| 1108 | if (r3 & 4) { // 1M decode mode?\r |
| 1109 | decode_write16(a, d, r3);\r |
| 1110 | } else {\r |
| 1111 | // allow access in any mode, like Gens does\r |
| 1112 | *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe))=d;\r |
| 1113 | }\r |
| 1114 | return;\r |
| 1115 | }\r |
| 1116 | \r |
| 1117 | // word RAM (1M area)\r |
| 1118 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 1119 | int bank;\r |
| 1120 | if (d)\r |
| 1121 | wrdprintf("s68k_wram1M w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
| 1122 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 1123 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 1124 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1125 | *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe))=d;\r |
| 1126 | return;\r |
| 1127 | }\r |
| 1128 | \r |
| 1129 | // PCM\r |
| 1130 | if ((a&0xff8000)==0xff0000) {\r |
| 1131 | a &= 0x7fff;\r |
| 1132 | if (a >= 0x2000)\r |
| 1133 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a>>1)&0xfff] = d;\r |
| 1134 | else if (a < 0x12)\r |
| 1135 | pcm_write(a>>1, d & 0xff);\r |
| 1136 | return;\r |
| 1137 | }\r |
| 1138 | \r |
| 1139 | // bram\r |
| 1140 | if ((a&0xff0000)==0xfe0000) {\r |
| 1141 | dprintf("s68k_bram w16: [%06x] %04x @%06x", a, d, SekPcS68k);\r |
| 1142 | a = (a>>1)&0x1fff;\r |
| 1143 | Pico_mcd->bram[a++] = d; // Gens does little endian here, an so do we..\r |
| 1144 | Pico_mcd->bram[a++] = d >> 8;\r |
| 1145 | SRam.changed = 1;\r |
| 1146 | return;\r |
| 1147 | }\r |
| 1148 | \r |
| 1149 | dprintf("s68k w16: %06x, %04x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1150 | }\r |
| 1151 | \r |
| 1152 | \r |
| 1153 | void PicoWriteS68k32(u32 a,u32 d)\r |
| 1154 | {\r |
| 1155 | #ifdef __debug_io2\r |
| 1156 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1157 | #endif\r |
| 1158 | \r |
| 1159 | a&=0xfffffe;\r |
| 1160 | \r |
| 1161 | // prg RAM\r |
| 1162 | if (a < 0x80000) {\r |
| 1163 | u16 *pm=(u16 *)(Pico_mcd->prg_ram+a);\r |
| 1164 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 1165 | return;\r |
| 1166 | }\r |
| 1167 | \r |
| 1168 | // regs\r |
| 1169 | if ((a&0xfffe00) == 0xff8000) {\r |
| 1170 | a &= 0x1fe;\r |
| 1171 | rdprintf("s68k_regs w32: [%02x] %08x @ %06x", a, d, SekPcS68k);\r |
| 1172 | if (a >= 0x58 && a < 0x68) {\r |
| 1173 | gfx_cd_write(a, d>>16);\r |
| 1174 | gfx_cd_write(a+2, d&0xffff);\r |
| 1175 | } else {\r |
| 1176 | s68k_reg_write8(a, d>>24);\r |
| 1177 | s68k_reg_write8(a+1,(d>>16)&0xff);\r |
| 1178 | s68k_reg_write8(a+2,(d>>8) &0xff);\r |
| 1179 | s68k_reg_write8(a+3, d &0xff);\r |
| 1180 | }\r |
| 1181 | return;\r |
| 1182 | }\r |
| 1183 | \r |
| 1184 | // word RAM (2M area)\r |
| 1185 | if ((a&0xfc0000)==0x080000) { // 080000-0bffff\r |
| 1186 | int r3 = Pico_mcd->s68k_regs[3];\r |
| 1187 | wrdprintf("s68k_wram2M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
| 1188 | if (r3 & 4) { // 1M decode mode?\r |
| 1189 | decode_write16(a , d >> 16, r3);\r |
| 1190 | decode_write16(a+2, d , r3);\r |
| 1191 | } else {\r |
| 1192 | // allow access in any mode, like Gens does\r |
| 1193 | u16 *pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 1194 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 1195 | }\r |
| 1196 | return;\r |
| 1197 | }\r |
| 1198 | \r |
| 1199 | // word RAM (1M area)\r |
| 1200 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // 0c0000-0dffff\r |
| 1201 | int bank;\r |
| 1202 | u16 *pm;\r |
| 1203 | if (d)\r |
| 1204 | wrdprintf("s68k_wram1M w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
| 1205 | // if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 1206 | // dprintf("s68k_wram1M FIXME: wrong mode");\r |
| 1207 | bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1208 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 1209 | pm[0]=(u16)(d>>16); pm[1]=(u16)d;\r |
| 1210 | return;\r |
| 1211 | }\r |
| 1212 | \r |
| 1213 | // PCM\r |
| 1214 | if ((a&0xff8000)==0xff0000) {\r |
| 1215 | a &= 0x7fff;\r |
| 1216 | if (a >= 0x2000) {\r |
| 1217 | a >>= 1;\r |
| 1218 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][a&0xfff] = (d >> 16);\r |
| 1219 | Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank][(a+1)&0xfff] = d;\r |
| 1220 | } else if (a < 0x12) {\r |
| 1221 | a >>= 1;\r |
| 1222 | pcm_write(a, (d>>16) & 0xff);\r |
| 1223 | pcm_write(a+1, d & 0xff);\r |
| 1224 | }\r |
| 1225 | return;\r |
| 1226 | }\r |
| 1227 | \r |
| 1228 | // bram\r |
| 1229 | if ((a&0xff0000)==0xfe0000) {\r |
| 1230 | dprintf("s68k_bram w32: [%06x] %08x @%06x", a, d, SekPcS68k);\r |
| 1231 | a = (a>>1)&0x1fff;\r |
| 1232 | Pico_mcd->bram[a++] = d >> 16; // middle endian? verify?\r |
| 1233 | Pico_mcd->bram[a++] = d >> 24;\r |
| 1234 | Pico_mcd->bram[a++] = d;\r |
| 1235 | Pico_mcd->bram[a++] = d >> 8;\r |
| 1236 | SRam.changed = 1;\r |
| 1237 | return;\r |
| 1238 | }\r |
| 1239 | \r |
| 1240 | dprintf("s68k w32: %06x, %08x @%06x", a&0xffffff, d, SekPcS68k);\r |
| 1241 | }\r |
| 1242 | \r |
| 1243 | \r |
| 1244 | \r |
| 1245 | // -----------------------------------------------------------------\r |
| 1246 | \r |
| 1247 | \r |
| 1248 | #if defined(EMU_C68K)\r |
| 1249 | static __inline int PicoMemBaseM68k(u32 pc)\r |
| 1250 | {\r |
| 1251 | if ((pc&0xe00000)==0xe00000)\r |
| 1252 | return (int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r |
| 1253 | \r |
| 1254 | if (pc < 0x20000)\r |
| 1255 | return (int)Pico_mcd->bios; // Program Counter in BIOS\r |
| 1256 | \r |
| 1257 | if ((pc&0xfc0000)==0x200000)\r |
| 1258 | {\r |
| 1259 | if (!(Pico_mcd->s68k_regs[3]&4))\r |
| 1260 | return (int)Pico_mcd->word_ram2M - 0x200000; // Program Counter in Word Ram\r |
| 1261 | if (pc < 0x220000) {\r |
| 1262 | int bank = (Pico_mcd->s68k_regs[3]&1);\r |
| 1263 | return (int)Pico_mcd->word_ram1M[bank] - 0x200000;\r |
| 1264 | }\r |
| 1265 | }\r |
| 1266 | \r |
| 1267 | // Error - Program Counter is invalid\r |
| 1268 | dprintf("m68k FIXME: unhandled jump to %06x", pc);\r |
| 1269 | \r |
| 1270 | return (int)Pico_mcd->bios;\r |
| 1271 | }\r |
| 1272 | \r |
| 1273 | \r |
| 1274 | static u32 PicoCheckPcM68k(u32 pc)\r |
| 1275 | {\r |
| 1276 | pc-=PicoCpu.membase; // Get real pc\r |
| 1277 | pc&=0xfffffe;\r |
| 1278 | \r |
| 1279 | PicoCpu.membase=PicoMemBaseM68k(pc);\r |
| 1280 | \r |
| 1281 | return PicoCpu.membase+pc;\r |
| 1282 | }\r |
| 1283 | \r |
| 1284 | \r |
| 1285 | static __inline int PicoMemBaseS68k(u32 pc)\r |
| 1286 | {\r |
| 1287 | if (pc < 0x80000) // PRG RAM\r |
| 1288 | return (int)Pico_mcd->prg_ram;\r |
| 1289 | \r |
| 1290 | if ((pc&0xfc0000)==0x080000) // WORD RAM 2M area (assume we are in the right mode..)\r |
| 1291 | return (int)Pico_mcd->word_ram2M - 0x080000;\r |
| 1292 | \r |
| 1293 | if ((pc&0xfe0000)==0x0c0000) { // word RAM 1M area\r |
| 1294 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1295 | return (int)Pico_mcd->word_ram1M[bank] - 0x0c0000;\r |
| 1296 | }\r |
| 1297 | \r |
| 1298 | // Error - Program Counter is invalid\r |
| 1299 | dprintf("s68k FIXME: unhandled jump to %06x", pc);\r |
| 1300 | \r |
| 1301 | return (int)Pico_mcd->prg_ram;\r |
| 1302 | }\r |
| 1303 | \r |
| 1304 | \r |
| 1305 | static u32 PicoCheckPcS68k(u32 pc)\r |
| 1306 | {\r |
| 1307 | pc-=PicoCpuS68k.membase; // Get real pc\r |
| 1308 | pc&=0xfffffe;\r |
| 1309 | \r |
| 1310 | PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r |
| 1311 | \r |
| 1312 | return PicoCpuS68k.membase+pc;\r |
| 1313 | }\r |
| 1314 | #endif\r |
| 1315 | \r |
| 1316 | \r |
| 1317 | void PicoMemSetupCD()\r |
| 1318 | {\r |
| 1319 | dprintf("PicoMemSetupCD()");\r |
| 1320 | #ifdef EMU_C68K\r |
| 1321 | // Setup m68k memory callbacks:\r |
| 1322 | PicoCpu.checkpc=PicoCheckPcM68k;\r |
| 1323 | PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r |
| 1324 | PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r |
| 1325 | PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r |
| 1326 | PicoCpu.write8 =PicoWriteM68k8;\r |
| 1327 | PicoCpu.write16=PicoWriteM68k16;\r |
| 1328 | PicoCpu.write32=PicoWriteM68k32;\r |
| 1329 | // s68k\r |
| 1330 | PicoCpuS68k.checkpc=PicoCheckPcS68k;\r |
| 1331 | PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r |
| 1332 | PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r |
| 1333 | PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r |
| 1334 | PicoCpuS68k.write8 =PicoWriteS68k8;\r |
| 1335 | PicoCpuS68k.write16=PicoWriteS68k16;\r |
| 1336 | PicoCpuS68k.write32=PicoWriteS68k32;\r |
| 1337 | #endif\r |
| 1338 | }\r |
| 1339 | \r |
| 1340 | \r |
| 1341 | #ifdef EMU_M68K\r |
| 1342 | unsigned char PicoReadCD8w (unsigned int a) {\r |
| 1343 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r |
| 1344 | }\r |
| 1345 | unsigned short PicoReadCD16w(unsigned int a) {\r |
| 1346 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k16(a) : PicoReadM68k16(a);\r |
| 1347 | }\r |
| 1348 | unsigned int PicoReadCD32w(unsigned int a) {\r |
| 1349 | return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k32(a) : PicoReadM68k32(a);\r |
| 1350 | }\r |
| 1351 | void PicoWriteCD8w (unsigned int a, unsigned char d) {\r |
| 1352 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k8(a, d); else PicoWriteM68k8(a, d);\r |
| 1353 | }\r |
| 1354 | void PicoWriteCD16w(unsigned int a, unsigned short d) {\r |
| 1355 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k16(a, d); else PicoWriteM68k16(a, d);\r |
| 1356 | }\r |
| 1357 | void PicoWriteCD32w(unsigned int a, unsigned int d) {\r |
| 1358 | if (m68ki_cpu_p == &PicoS68kCPU) PicoWriteS68k32(a, d); else PicoWriteM68k32(a, d);\r |
| 1359 | }\r |
| 1360 | \r |
| 1361 | // these are allowed to access RAM\r |
| 1362 | unsigned int m68k_read_pcrelative_CD8 (unsigned int a) {\r |
| 1363 | a&=0xffffff;\r |
| 1364 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
| 1365 | if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r |
| 1366 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
| 1367 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
| 1368 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
| 1369 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1370 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
| 1371 | }\r |
| 1372 | dprintf("s68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
| 1373 | } else {\r |
| 1374 | if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r |
| 1375 | if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r |
| 1376 | if((a&0xfc0000)==0x200000) { // word RAM\r |
| 1377 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
| 1378 | return *(u8 *)(Pico_mcd->word_ram2M+((a^1)&0x3ffff));\r |
| 1379 | else if (a < 0x220000) {\r |
| 1380 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 1381 | return *(u8 *)(Pico_mcd->word_ram1M[bank]+((a^1)&0x1ffff));\r |
| 1382 | }\r |
| 1383 | }\r |
| 1384 | dprintf("m68k_read_pcrelative_CD8 FIXME: can't handle %06x", a);\r |
| 1385 | }\r |
| 1386 | return 0;//(u8) lastread_d;\r |
| 1387 | }\r |
| 1388 | unsigned int m68k_read_pcrelative_CD16(unsigned int a) {\r |
| 1389 | a&=0xffffff;\r |
| 1390 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
| 1391 | if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r |
| 1392 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
| 1393 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 1394 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
| 1395 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1396 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 1397 | }\r |
| 1398 | dprintf("s68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
| 1399 | } else {\r |
| 1400 | if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r |
| 1401 | if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r |
| 1402 | if((a&0xfc0000)==0x200000) { // word RAM\r |
| 1403 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
| 1404 | return *(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe));\r |
| 1405 | else if (a < 0x220000) {\r |
| 1406 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 1407 | return *(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 1408 | }\r |
| 1409 | }\r |
| 1410 | dprintf("m68k_read_pcrelative_CD16 FIXME: can't handle %06x", a);\r |
| 1411 | }\r |
| 1412 | return 0;\r |
| 1413 | }\r |
| 1414 | unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r |
| 1415 | u16 *pm;\r |
| 1416 | a&=0xffffff;\r |
| 1417 | if(m68ki_cpu_p == &PicoS68kCPU) {\r |
| 1418 | if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r |
| 1419 | if ((a&0xfc0000)==0x080000 && !(Pico_mcd->s68k_regs[3]&4)) // word RAM (2M area: 080000-0bffff)\r |
| 1420 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
| 1421 | if ((a&0xfe0000)==0x0c0000 && (Pico_mcd->s68k_regs[3]&4)) { // word RAM (1M area: 0c0000-0dffff)\r |
| 1422 | int bank = !(Pico_mcd->s68k_regs[3]&1);\r |
| 1423 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 1424 | return (pm[0]<<16)|pm[1];\r |
| 1425 | }\r |
| 1426 | dprintf("s68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
| 1427 | } else {\r |
| 1428 | if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r |
| 1429 | if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r |
| 1430 | if((a&0xfc0000)==0x200000) { // word RAM\r |
| 1431 | if(!(Pico_mcd->s68k_regs[3]&4)) // 2M?\r |
| 1432 | { pm=(u16 *)(Pico_mcd->word_ram2M+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r |
| 1433 | else if (a < 0x220000) {\r |
| 1434 | int bank = Pico_mcd->s68k_regs[3]&1;\r |
| 1435 | pm=(u16 *)(Pico_mcd->word_ram1M[bank]+(a&0x1fffe));\r |
| 1436 | return (pm[0]<<16)|pm[1];\r |
| 1437 | }\r |
| 1438 | }\r |
| 1439 | dprintf("m68k_read_pcrelative_CD32 FIXME: can't handle %06x", a);\r |
| 1440 | }\r |
| 1441 | return 0;\r |
| 1442 | }\r |
| 1443 | #endif // EMU_M68K\r |
| 1444 | \r |