| 1 | /* |
| 2 | * PicoDrive |
| 3 | * (C) notaz, 2009,2010,2013 |
| 4 | * |
| 5 | * This work is licensed under the terms of MAME license. |
| 6 | * See COPYING file in the top-level directory. |
| 7 | * |
| 8 | * Register map: |
| 9 | * a15100 F....... R.....EA F.....AC N...VHMP 4000 // Fm Ren nrEs Aden Cart heN V H cMd Pwm |
| 10 | * a15102 ........ ......SM ? 4002 // intS intM |
| 11 | * a15104 ........ ......10 ........ hhhhhhhh 4004 // bk1 bk0 Hint |
| 12 | * a15106 F....... .....SDR UE...... .....SDR 4006 // Full 68S Dma Rv fUll[fb] Empt[fb] |
| 13 | * a15108 (32bit DREQ src) 4008 |
| 14 | * a1510c (32bit DREQ dst) 400c |
| 15 | * a15110 llllllll llllll00 4010 // DREQ Len |
| 16 | * a15112 (16bit FIFO reg) 4012 |
| 17 | * a15114 ? (16bit VRES clr) 4014 |
| 18 | * a15116 ? (16bit Vint clr) 4016 |
| 19 | * a15118 ? (16bit Hint clr) 4018 |
| 20 | * a1511a ........ .......C (16bit CMD clr) 401a // Cm |
| 21 | * a1511c ? (16bit PWM clr) 401c |
| 22 | * a1511e ? ? 401e |
| 23 | * a15120 (16 bytes comm) 2020 |
| 24 | * a15130 (PWM) 2030 |
| 25 | * |
| 26 | * SH2 addr lines: |
| 27 | * iii. .cc. ..xx * // Internal, Cs, x |
| 28 | * |
| 29 | * sh2 map, wait/bus cycles (from docs): |
| 30 | * r w |
| 31 | * rom 0000000-0003fff 1 - |
| 32 | * sys reg 0004000-00040ff 1 1 |
| 33 | * vdp reg 0004100-00041ff 5 5 |
| 34 | * vdp pal 0004200-00043ff 5 5 |
| 35 | * rom 2000000-23fffff 6-15 |
| 36 | * dram/fb 4000000-401ffff 5-12 1-3 |
| 37 | * fb ovr 4020000-403ffff |
| 38 | * sdram 6000000-603ffff 12 2 (cycles) |
| 39 | * d.a. c0000000-? |
| 40 | */ |
| 41 | #include "../pico_int.h" |
| 42 | #include "../memory.h" |
| 43 | #include "../../cpu/sh2/compiler.h" |
| 44 | |
| 45 | static const char str_mars[] = "MARS"; |
| 46 | |
| 47 | void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s; |
| 48 | struct Pico32xMem *Pico32xMem; |
| 49 | |
| 50 | static void bank_switch(int b); |
| 51 | |
| 52 | // poll detection |
| 53 | #define POLL_THRESHOLD 3 |
| 54 | |
| 55 | static struct { |
| 56 | u32 addr, cycles; |
| 57 | int cnt; |
| 58 | } m68k_poll; |
| 59 | |
| 60 | static int m68k_poll_detect(u32 a, u32 cycles, u32 flags) |
| 61 | { |
| 62 | int ret = 0; |
| 63 | |
| 64 | if (a - 2 <= m68k_poll.addr && m68k_poll.addr <= a + 2 |
| 65 | && cycles - m68k_poll.cycles <= 64) |
| 66 | { |
| 67 | if (m68k_poll.cnt++ > POLL_THRESHOLD) { |
| 68 | if (!(Pico32x.emu_flags & flags)) { |
| 69 | elprintf(EL_32X, "m68k poll addr %08x, cyc %u", |
| 70 | a, cycles - m68k_poll.cycles); |
| 71 | ret = 1; |
| 72 | } |
| 73 | Pico32x.emu_flags |= flags; |
| 74 | } |
| 75 | } |
| 76 | else { |
| 77 | m68k_poll.cnt = 0; |
| 78 | m68k_poll.addr = a; |
| 79 | } |
| 80 | m68k_poll.cycles = cycles; |
| 81 | |
| 82 | return ret; |
| 83 | } |
| 84 | |
| 85 | void p32x_m68k_poll_event(u32 flags) |
| 86 | { |
| 87 | if (Pico32x.emu_flags & flags) { |
| 88 | elprintf(EL_32X, "m68k poll %02x -> %02x", Pico32x.emu_flags, |
| 89 | Pico32x.emu_flags & ~flags); |
| 90 | Pico32x.emu_flags &= ~flags; |
| 91 | SekSetStop(0); |
| 92 | } |
| 93 | m68k_poll.addr = m68k_poll.cnt = 0; |
| 94 | } |
| 95 | |
| 96 | static void sh2_poll_detect(SH2 *sh2, u32 a, u32 flags) |
| 97 | { |
| 98 | int cycles_left = sh2_cycles_left(sh2); |
| 99 | |
| 100 | if (a == sh2->poll_addr && sh2->poll_cycles - cycles_left <= 10) { |
| 101 | if (sh2->poll_cnt++ > 3) { |
| 102 | if (!(sh2->state & flags)) |
| 103 | elprintf(EL_32X, "%csh2 state: %02x->%02x", sh2->is_slave?'s':'m', |
| 104 | sh2->state, sh2->state | flags); |
| 105 | |
| 106 | sh2->state |= flags; |
| 107 | sh2_end_run(sh2, 1); |
| 108 | pevt_log_sh2(sh2, EVT_POLL_START); |
| 109 | return; |
| 110 | } |
| 111 | } |
| 112 | else |
| 113 | sh2->poll_cnt = 0; |
| 114 | sh2->poll_addr = a; |
| 115 | sh2->poll_cycles = cycles_left; |
| 116 | } |
| 117 | |
| 118 | void p32x_sh2_poll_event(SH2 *sh2, u32 flags, u32 m68k_cycles) |
| 119 | { |
| 120 | if (sh2->state & flags) { |
| 121 | elprintf(EL_32X, "%csh2 state: %02x->%02x", sh2->is_slave?'s':'m', |
| 122 | sh2->state, sh2->state & ~flags); |
| 123 | |
| 124 | if (sh2->m68krcycles_done < m68k_cycles) |
| 125 | sh2->m68krcycles_done = m68k_cycles; |
| 126 | |
| 127 | pevt_log_sh2_o(sh2, EVT_POLL_END); |
| 128 | } |
| 129 | |
| 130 | sh2->state &= ~flags; |
| 131 | sh2->poll_addr = sh2->poll_cycles = sh2->poll_cnt = 0; |
| 132 | } |
| 133 | |
| 134 | static void sh2s_sync_on_read(SH2 *sh2) |
| 135 | { |
| 136 | int cycles; |
| 137 | if (sh2->poll_cnt != 0) |
| 138 | return; |
| 139 | |
| 140 | cycles = sh2_cycles_done(sh2); |
| 141 | if (cycles > 600) |
| 142 | p32x_sync_other_sh2(sh2, sh2->m68krcycles_done + cycles / 3); |
| 143 | } |
| 144 | |
| 145 | // SH2 faking |
| 146 | //#define FAKE_SH2 |
| 147 | #ifdef FAKE_SH2 |
| 148 | static int p32x_csum_faked; |
| 149 | static const u16 comm_fakevals[] = { |
| 150 | 0x4d5f, 0x4f4b, // M_OK |
| 151 | 0x535f, 0x4f4b, // S_OK |
| 152 | 0x4D41, 0x5346, // MASF - Brutal Unleashed |
| 153 | 0x5331, 0x4d31, // Darxide |
| 154 | 0x5332, 0x4d32, |
| 155 | 0x5333, 0x4d33, |
| 156 | 0x0000, 0x0000, // eq for doom |
| 157 | 0x0002, // Mortal Kombat |
| 158 | // 0, // pad |
| 159 | }; |
| 160 | |
| 161 | static u32 sh2_comm_faker(u32 a) |
| 162 | { |
| 163 | static int f = 0; |
| 164 | if (a == 0x28 && !p32x_csum_faked) { |
| 165 | p32x_csum_faked = 1; |
| 166 | return *(unsigned short *)(Pico.rom + 0x18e); |
| 167 | } |
| 168 | if (f >= sizeof(comm_fakevals) / sizeof(comm_fakevals[0])) |
| 169 | f = 0; |
| 170 | return comm_fakevals[f++]; |
| 171 | } |
| 172 | #endif |
| 173 | |
| 174 | // ------------------------------------------------------------------ |
| 175 | // 68k regs |
| 176 | |
| 177 | static u32 p32x_reg_read16(u32 a) |
| 178 | { |
| 179 | a &= 0x3e; |
| 180 | |
| 181 | #if 0 |
| 182 | if ((a & 0x30) == 0x20) |
| 183 | return sh2_comm_faker(a); |
| 184 | #else |
| 185 | if ((a & 0x30) == 0x20) { |
| 186 | static u32 dr2 = 0; |
| 187 | unsigned int cycles = SekCyclesDoneT(); |
| 188 | int comreg = 1 << (a & 0x0f) / 2; |
| 189 | |
| 190 | // evil X-Men proto polls in a dbra loop and expects it to expire.. |
| 191 | if (SekDar(2) != dr2) |
| 192 | m68k_poll.cnt = 0; |
| 193 | dr2 = SekDar(2); |
| 194 | |
| 195 | if (cycles - msh2.m68krcycles_done > 500) |
| 196 | p32x_sync_sh2s(cycles); |
| 197 | if (Pico32x.comm_dirty_sh2 & comreg) |
| 198 | Pico32x.comm_dirty_sh2 &= ~comreg; |
| 199 | else if (m68k_poll_detect(a, cycles, P32XF_68KCPOLL)) { |
| 200 | SekSetStop(1); |
| 201 | SekEndRun(16); |
| 202 | } |
| 203 | dr2 = SekDar(2); |
| 204 | goto out; |
| 205 | } |
| 206 | #endif |
| 207 | |
| 208 | if (a == 2) { // INTM, INTS |
| 209 | unsigned int cycles = SekCyclesDoneT(); |
| 210 | if (cycles - msh2.m68krcycles_done > 64) |
| 211 | p32x_sync_sh2s(cycles); |
| 212 | return ((Pico32x.sh2irqi[0] & P32XI_CMD) >> 4) | ((Pico32x.sh2irqi[1] & P32XI_CMD) >> 3); |
| 213 | } |
| 214 | |
| 215 | if ((a & 0x30) == 0x30) |
| 216 | return p32x_pwm_read16(a, NULL, SekCyclesDoneT()); |
| 217 | |
| 218 | out: |
| 219 | return Pico32x.regs[a / 2]; |
| 220 | } |
| 221 | |
| 222 | static void p32x_reg_write8(u32 a, u32 d) |
| 223 | { |
| 224 | u16 *r = Pico32x.regs; |
| 225 | a &= 0x3f; |
| 226 | |
| 227 | // for things like bset on comm port |
| 228 | m68k_poll.cnt = 0; |
| 229 | |
| 230 | switch (a) { |
| 231 | case 0: // adapter ctl |
| 232 | r[0] = (r[0] & ~P32XS_FM) | ((d << 8) & P32XS_FM); |
| 233 | return; |
| 234 | case 1: // adapter ctl, RES bit writeable |
| 235 | if ((d ^ r[0]) & d & P32XS_nRES) |
| 236 | p32x_reset_sh2s(); |
| 237 | r[0] = (r[0] & ~P32XS_nRES) | (d & P32XS_nRES); |
| 238 | return; |
| 239 | case 3: // irq ctl |
| 240 | if ((d & 1) != !!(Pico32x.sh2irqi[0] & P32XI_CMD)) { |
| 241 | p32x_sync_sh2s(SekCyclesDoneT()); |
| 242 | if (d & 1) |
| 243 | Pico32x.sh2irqi[0] |= P32XI_CMD; |
| 244 | else |
| 245 | Pico32x.sh2irqi[0] &= ~P32XI_CMD; |
| 246 | p32x_update_irls(NULL, SekCyclesDoneT2()); |
| 247 | } |
| 248 | if (!!(d & 2) != !!(Pico32x.sh2irqi[1] & P32XI_CMD)) { |
| 249 | p32x_sync_sh2s(SekCyclesDoneT()); |
| 250 | if (d & 2) |
| 251 | Pico32x.sh2irqi[1] |= P32XI_CMD; |
| 252 | else |
| 253 | Pico32x.sh2irqi[1] &= ~P32XI_CMD; |
| 254 | p32x_update_irls(NULL, SekCyclesDoneT2()); |
| 255 | } |
| 256 | return; |
| 257 | case 5: // bank |
| 258 | d &= 7; |
| 259 | if (r[4 / 2] != d) { |
| 260 | r[4 / 2] = d; |
| 261 | bank_switch(d); |
| 262 | } |
| 263 | return; |
| 264 | case 7: // DREQ ctl |
| 265 | r[6 / 2] = (r[6 / 2] & P32XS_FULL) | (d & (P32XS_68S|P32XS_DMA|P32XS_RV)); |
| 266 | return; |
| 267 | case 0x1b: // TV |
| 268 | r[0x1a / 2] = d; |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | if ((a & 0x30) == 0x20) { |
| 273 | u8 *r8 = (u8 *)r; |
| 274 | int cycles = SekCyclesDoneT(); |
| 275 | int comreg; |
| 276 | |
| 277 | if (r8[a ^ 1] == d) |
| 278 | return; |
| 279 | |
| 280 | comreg = 1 << (a & 0x0f) / 2; |
| 281 | if (Pico32x.comm_dirty_68k & comreg) |
| 282 | p32x_sync_sh2s(cycles); |
| 283 | |
| 284 | r8[a ^ 1] = d; |
| 285 | p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles); |
| 286 | p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles); |
| 287 | Pico32x.comm_dirty_68k |= comreg; |
| 288 | |
| 289 | if (cycles - (int)msh2.m68krcycles_done > 120) |
| 290 | p32x_sync_sh2s(cycles); |
| 291 | return; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | static void p32x_reg_write16(u32 a, u32 d) |
| 296 | { |
| 297 | u16 *r = Pico32x.regs; |
| 298 | a &= 0x3e; |
| 299 | |
| 300 | // for things like bset on comm port |
| 301 | m68k_poll.cnt = 0; |
| 302 | |
| 303 | switch (a) { |
| 304 | case 0x00: // adapter ctl |
| 305 | if ((d ^ r[0]) & d & P32XS_nRES) |
| 306 | p32x_reset_sh2s(); |
| 307 | r[0] = (r[0] & ~(P32XS_FM|P32XS_nRES)) | (d & (P32XS_FM|P32XS_nRES)); |
| 308 | return; |
| 309 | case 0x10: // DREQ len |
| 310 | r[a / 2] = d & ~3; |
| 311 | return; |
| 312 | case 0x12: // FIFO reg |
| 313 | if (!(r[6 / 2] & P32XS_68S)) { |
| 314 | elprintf(EL_32X|EL_ANOMALY, "DREQ FIFO w16 without 68S?"); |
| 315 | return; |
| 316 | } |
| 317 | if (Pico32x.dmac0_fifo_ptr < DMAC_FIFO_LEN) { |
| 318 | Pico32x.dmac_fifo[Pico32x.dmac0_fifo_ptr++] = d; |
| 319 | if ((Pico32x.dmac0_fifo_ptr & 3) == 0) |
| 320 | p32x_dreq0_trigger(); |
| 321 | if (Pico32x.dmac0_fifo_ptr == DMAC_FIFO_LEN) |
| 322 | r[6 / 2] |= P32XS_FULL; |
| 323 | } |
| 324 | break; |
| 325 | } |
| 326 | |
| 327 | // DREQ src, dst |
| 328 | if ((a & 0x38) == 0x08) { |
| 329 | r[a / 2] = d; |
| 330 | return; |
| 331 | } |
| 332 | // comm port |
| 333 | else if ((a & 0x30) == 0x20) { |
| 334 | int cycles = SekCyclesDoneT(); |
| 335 | int comreg; |
| 336 | |
| 337 | if (r[a / 2] == d) |
| 338 | return; |
| 339 | |
| 340 | comreg = 1 << (a & 0x0f) / 2; |
| 341 | if (Pico32x.comm_dirty_68k & comreg) |
| 342 | p32x_sync_sh2s(cycles); |
| 343 | |
| 344 | r[a / 2] = d; |
| 345 | p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles); |
| 346 | p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles); |
| 347 | Pico32x.comm_dirty_68k |= comreg; |
| 348 | |
| 349 | if (cycles - (int)msh2.m68krcycles_done > 120) |
| 350 | p32x_sync_sh2s(cycles); |
| 351 | return; |
| 352 | } |
| 353 | // PWM |
| 354 | else if ((a & 0x30) == 0x30) { |
| 355 | p32x_pwm_write16(a, d, NULL, SekCyclesDoneT()); |
| 356 | return; |
| 357 | } |
| 358 | |
| 359 | p32x_reg_write8(a + 1, d); |
| 360 | } |
| 361 | |
| 362 | // ------------------------------------------------------------------ |
| 363 | // VDP regs |
| 364 | static u32 p32x_vdp_read16(u32 a) |
| 365 | { |
| 366 | a &= 0x0e; |
| 367 | |
| 368 | return Pico32x.vdp_regs[a / 2]; |
| 369 | } |
| 370 | |
| 371 | static void p32x_vdp_write8(u32 a, u32 d) |
| 372 | { |
| 373 | u16 *r = Pico32x.vdp_regs; |
| 374 | a &= 0x0f; |
| 375 | |
| 376 | // TODO: verify what's writeable |
| 377 | switch (a) { |
| 378 | case 0x01: |
| 379 | // priority inversion is handled in palette |
| 380 | if ((r[0] ^ d) & P32XV_PRI) |
| 381 | Pico32x.dirty_pal = 1; |
| 382 | r[0] = (r[0] & P32XV_nPAL) | (d & 0xff); |
| 383 | break; |
| 384 | case 0x03: // shift (for pp mode) |
| 385 | r[2 / 2] = d & 1; |
| 386 | break; |
| 387 | case 0x05: // fill len |
| 388 | r[4 / 2] = d & 0xff; |
| 389 | break; |
| 390 | case 0x0b: |
| 391 | d &= 1; |
| 392 | Pico32x.pending_fb = d; |
| 393 | // if we are blanking and FS bit is changing |
| 394 | if (((r[0x0a/2] & P32XV_VBLK) || (r[0] & P32XV_Mx) == 0) && ((r[0x0a/2] ^ d) & P32XV_FS)) { |
| 395 | r[0x0a/2] ^= P32XV_FS; |
| 396 | Pico32xSwapDRAM(d ^ 1); |
| 397 | elprintf(EL_32X, "VDP FS: %d", r[0x0a/2] & P32XV_FS); |
| 398 | } |
| 399 | break; |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | static void p32x_vdp_write16(u32 a, u32 d, SH2 *sh2) |
| 404 | { |
| 405 | a &= 0x0e; |
| 406 | if (a == 6) { // fill start |
| 407 | Pico32x.vdp_regs[6 / 2] = d; |
| 408 | return; |
| 409 | } |
| 410 | if (a == 8) { // fill data |
| 411 | u16 *dram = Pico32xMem->dram[(Pico32x.vdp_regs[0x0a/2] & P32XV_FS) ^ 1]; |
| 412 | int len = Pico32x.vdp_regs[4 / 2] + 1; |
| 413 | int len1 = len; |
| 414 | a = Pico32x.vdp_regs[6 / 2]; |
| 415 | while (len1--) { |
| 416 | dram[a] = d; |
| 417 | a = (a & 0xff00) | ((a + 1) & 0xff); |
| 418 | } |
| 419 | Pico32x.vdp_regs[0x06 / 2] = a; |
| 420 | Pico32x.vdp_regs[0x08 / 2] = d; |
| 421 | if (sh2 != NULL && len > 4) { |
| 422 | Pico32x.vdp_regs[0x0a / 2] |= P32XV_nFEN; |
| 423 | // supposedly takes 3 bus/6 sh2 cycles? or 3 sh2 cycles? |
| 424 | p32x_event_schedule_sh2(sh2, P32X_EVENT_FILLEND, 3 + len); |
| 425 | } |
| 426 | return; |
| 427 | } |
| 428 | |
| 429 | p32x_vdp_write8(a | 1, d); |
| 430 | } |
| 431 | |
| 432 | // ------------------------------------------------------------------ |
| 433 | // SH2 regs |
| 434 | |
| 435 | static u32 p32x_sh2reg_read16(u32 a, SH2 *sh2) |
| 436 | { |
| 437 | u16 *r = Pico32x.regs; |
| 438 | a &= 0xfe; // ? |
| 439 | |
| 440 | switch (a) { |
| 441 | case 0x00: // adapter/irq ctl |
| 442 | return (r[0] & P32XS_FM) | Pico32x.sh2_regs[0] |
| 443 | | Pico32x.sh2irq_mask[sh2->is_slave]; |
| 444 | case 0x04: // H count (often as comm too) |
| 445 | sh2_poll_detect(sh2, a, SH2_STATE_CPOLL); |
| 446 | sh2s_sync_on_read(sh2); |
| 447 | return Pico32x.sh2_regs[4 / 2]; |
| 448 | case 0x10: // DREQ len |
| 449 | return r[a / 2]; |
| 450 | } |
| 451 | |
| 452 | // DREQ src, dst |
| 453 | if ((a & 0x38) == 0x08) |
| 454 | return r[a / 2]; |
| 455 | // comm port |
| 456 | if ((a & 0x30) == 0x20) { |
| 457 | int comreg = 1 << (a & 0x0f) / 2; |
| 458 | if (Pico32x.comm_dirty_68k & comreg) |
| 459 | Pico32x.comm_dirty_68k &= ~comreg; |
| 460 | else |
| 461 | sh2_poll_detect(sh2, a, SH2_STATE_CPOLL); |
| 462 | sh2s_sync_on_read(sh2); |
| 463 | return r[a / 2]; |
| 464 | } |
| 465 | if ((a & 0x30) == 0x30) { |
| 466 | return p32x_pwm_read16(a, sh2, sh2_cycles_done_m68k(sh2)); |
| 467 | } |
| 468 | |
| 469 | return 0; |
| 470 | } |
| 471 | |
| 472 | static void p32x_sh2reg_write8(u32 a, u32 d, SH2 *sh2) |
| 473 | { |
| 474 | a &= 0xff; |
| 475 | |
| 476 | sh2->poll_addr = 0; |
| 477 | |
| 478 | switch (a) { |
| 479 | case 0: // FM |
| 480 | Pico32x.regs[0] &= ~P32XS_FM; |
| 481 | Pico32x.regs[0] |= (d << 8) & P32XS_FM; |
| 482 | return; |
| 483 | case 1: // HEN/irq masks |
| 484 | if ((d ^ Pico32x.sh2_regs[0]) & 0x80) |
| 485 | elprintf(EL_ANOMALY|EL_32X, "HEN"); |
| 486 | Pico32x.sh2irq_mask[sh2->is_slave] = d & 0x8f; |
| 487 | Pico32x.sh2_regs[0] &= ~0x80; |
| 488 | Pico32x.sh2_regs[0] |= d & 0x80; |
| 489 | if (d & 1) |
| 490 | p32x_pwm_schedule_sh2(sh2); |
| 491 | p32x_update_irls(sh2, 0); |
| 492 | return; |
| 493 | case 5: // H count |
| 494 | d &= 0xff; |
| 495 | if (Pico32x.sh2_regs[4 / 2] != d) { |
| 496 | Pico32x.sh2_regs[4 / 2] = d; |
| 497 | p32x_sh2_poll_event(sh2->other_sh2, SH2_STATE_CPOLL, |
| 498 | sh2_cycles_done_m68k(sh2)); |
| 499 | sh2_end_run(sh2, 4); |
| 500 | } |
| 501 | return; |
| 502 | } |
| 503 | |
| 504 | if ((a & 0x30) == 0x20) { |
| 505 | u8 *r8 = (u8 *)Pico32x.regs; |
| 506 | int comreg; |
| 507 | if (r8[a ^ 1] == d) |
| 508 | return; |
| 509 | |
| 510 | r8[a ^ 1] = d; |
| 511 | p32x_m68k_poll_event(P32XF_68KCPOLL); |
| 512 | p32x_sh2_poll_event(sh2->other_sh2, SH2_STATE_CPOLL, |
| 513 | sh2_cycles_done_m68k(sh2)); |
| 514 | comreg = 1 << (a & 0x0f) / 2; |
| 515 | Pico32x.comm_dirty_sh2 |= comreg; |
| 516 | return; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | static void p32x_sh2reg_write16(u32 a, u32 d, SH2 *sh2) |
| 521 | { |
| 522 | a &= 0xfe; |
| 523 | |
| 524 | sh2->poll_addr = 0; |
| 525 | |
| 526 | // comm |
| 527 | if ((a & 0x30) == 0x20) { |
| 528 | int comreg; |
| 529 | if (Pico32x.regs[a / 2] == d) |
| 530 | return; |
| 531 | |
| 532 | Pico32x.regs[a / 2] = d; |
| 533 | p32x_m68k_poll_event(P32XF_68KCPOLL); |
| 534 | p32x_sh2_poll_event(sh2->other_sh2, SH2_STATE_CPOLL, |
| 535 | sh2_cycles_done_m68k(sh2)); |
| 536 | comreg = 1 << (a & 0x0f) / 2; |
| 537 | Pico32x.comm_dirty_sh2 |= comreg; |
| 538 | return; |
| 539 | } |
| 540 | // PWM |
| 541 | else if ((a & 0x30) == 0x30) { |
| 542 | p32x_pwm_write16(a, d, sh2, sh2_cycles_done_m68k(sh2)); |
| 543 | return; |
| 544 | } |
| 545 | |
| 546 | switch (a) { |
| 547 | case 0: // FM |
| 548 | Pico32x.regs[0] &= ~P32XS_FM; |
| 549 | Pico32x.regs[0] |= d & P32XS_FM; |
| 550 | break; |
| 551 | case 0x14: Pico32x.sh2irqs &= ~P32XI_VRES; goto irls; |
| 552 | case 0x16: Pico32x.sh2irqs &= ~P32XI_VINT; goto irls; |
| 553 | case 0x18: Pico32x.sh2irqs &= ~P32XI_HINT; goto irls; |
| 554 | case 0x1a: Pico32x.sh2irqi[sh2->is_slave] &= ~P32XI_CMD; goto irls; |
| 555 | case 0x1c: |
| 556 | Pico32x.sh2irqs &= ~P32XI_PWM; |
| 557 | p32x_pwm_schedule_sh2(sh2); |
| 558 | goto irls; |
| 559 | } |
| 560 | |
| 561 | p32x_sh2reg_write8(a | 1, d, sh2); |
| 562 | return; |
| 563 | |
| 564 | irls: |
| 565 | p32x_update_irls(sh2, 0); |
| 566 | } |
| 567 | |
| 568 | // ------------------------------------------------------------------ |
| 569 | // 32x 68k handlers |
| 570 | |
| 571 | // after ADEN |
| 572 | static u32 PicoRead8_32x_on(u32 a) |
| 573 | { |
| 574 | u32 d = 0; |
| 575 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 576 | d = p32x_reg_read16(a); |
| 577 | goto out_16to8; |
| 578 | } |
| 579 | |
| 580 | if ((a & 0xfc00) != 0x5000) |
| 581 | return PicoRead8_io(a); |
| 582 | |
| 583 | if ((a & 0xfff0) == 0x5180) { // a15180 |
| 584 | d = p32x_vdp_read16(a); |
| 585 | goto out_16to8; |
| 586 | } |
| 587 | |
| 588 | if ((a & 0xfe00) == 0x5200) { // a15200 |
| 589 | d = Pico32xMem->pal[(a & 0x1ff) / 2]; |
| 590 | goto out_16to8; |
| 591 | } |
| 592 | |
| 593 | if ((a & 0xfffc) == 0x30ec) { // a130ec |
| 594 | d = str_mars[a & 3]; |
| 595 | goto out; |
| 596 | } |
| 597 | |
| 598 | elprintf(EL_UIO, "m68k unmapped r8 [%06x] @%06x", a, SekPc); |
| 599 | return d; |
| 600 | |
| 601 | out_16to8: |
| 602 | if (a & 1) |
| 603 | d &= 0xff; |
| 604 | else |
| 605 | d >>= 8; |
| 606 | |
| 607 | out: |
| 608 | elprintf(EL_32X, "m68k 32x r8 [%06x] %02x @%06x", a, d, SekPc); |
| 609 | return d; |
| 610 | } |
| 611 | |
| 612 | static u32 PicoRead16_32x_on(u32 a) |
| 613 | { |
| 614 | u32 d = 0; |
| 615 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 616 | d = p32x_reg_read16(a); |
| 617 | goto out; |
| 618 | } |
| 619 | |
| 620 | if ((a & 0xfc00) != 0x5000) |
| 621 | return PicoRead16_io(a); |
| 622 | |
| 623 | if ((a & 0xfff0) == 0x5180) { // a15180 |
| 624 | d = p32x_vdp_read16(a); |
| 625 | goto out; |
| 626 | } |
| 627 | |
| 628 | if ((a & 0xfe00) == 0x5200) { // a15200 |
| 629 | d = Pico32xMem->pal[(a & 0x1ff) / 2]; |
| 630 | goto out; |
| 631 | } |
| 632 | |
| 633 | if ((a & 0xfffc) == 0x30ec) { // a130ec |
| 634 | d = !(a & 2) ? ('M'<<8)|'A' : ('R'<<8)|'S'; |
| 635 | goto out; |
| 636 | } |
| 637 | |
| 638 | elprintf(EL_UIO, "m68k unmapped r16 [%06x] @%06x", a, SekPc); |
| 639 | return d; |
| 640 | |
| 641 | out: |
| 642 | elprintf(EL_32X, "m68k 32x r16 [%06x] %04x @%06x", a, d, SekPc); |
| 643 | return d; |
| 644 | } |
| 645 | |
| 646 | static void PicoWrite8_32x_on(u32 a, u32 d) |
| 647 | { |
| 648 | if ((a & 0xfc00) == 0x5000) |
| 649 | elprintf(EL_32X, "m68k 32x w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 650 | |
| 651 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 652 | p32x_reg_write8(a, d); |
| 653 | return; |
| 654 | } |
| 655 | |
| 656 | if ((a & 0xfc00) != 0x5000) { |
| 657 | PicoWrite8_io(a, d); |
| 658 | return; |
| 659 | } |
| 660 | |
| 661 | if (!(Pico32x.regs[0] & P32XS_FM)) { |
| 662 | if ((a & 0xfff0) == 0x5180) { // a15180 |
| 663 | p32x_vdp_write8(a, d); |
| 664 | return; |
| 665 | } |
| 666 | |
| 667 | // TODO: verify |
| 668 | if ((a & 0xfe00) == 0x5200) { // a15200 |
| 669 | elprintf(EL_32X|EL_ANOMALY, "m68k 32x PAL w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 670 | ((u8 *)Pico32xMem->pal)[(a & 0x1ff) ^ 1] = d; |
| 671 | Pico32x.dirty_pal = 1; |
| 672 | return; |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | elprintf(EL_UIO, "m68k unmapped w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 677 | } |
| 678 | |
| 679 | static void PicoWrite16_32x_on(u32 a, u32 d) |
| 680 | { |
| 681 | if ((a & 0xfc00) == 0x5000) |
| 682 | elprintf(EL_32X, "m68k 32x w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 683 | |
| 684 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 685 | p32x_reg_write16(a, d); |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | if ((a & 0xfc00) != 0x5000) { |
| 690 | PicoWrite16_io(a, d); |
| 691 | return; |
| 692 | } |
| 693 | |
| 694 | if (!(Pico32x.regs[0] & P32XS_FM)) { |
| 695 | if ((a & 0xfff0) == 0x5180) { // a15180 |
| 696 | p32x_vdp_write16(a, d, NULL); // FIXME? |
| 697 | return; |
| 698 | } |
| 699 | |
| 700 | if ((a & 0xfe00) == 0x5200) { // a15200 |
| 701 | Pico32xMem->pal[(a & 0x1ff) / 2] = d; |
| 702 | Pico32x.dirty_pal = 1; |
| 703 | return; |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | elprintf(EL_UIO, "m68k unmapped w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 708 | } |
| 709 | |
| 710 | // before ADEN |
| 711 | u32 PicoRead8_32x(u32 a) |
| 712 | { |
| 713 | u32 d = 0; |
| 714 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 715 | // regs are always readable |
| 716 | d = ((u8 *)Pico32x.regs)[(a & 0x3f) ^ 1]; |
| 717 | goto out; |
| 718 | } |
| 719 | |
| 720 | if ((a & 0xfffc) == 0x30ec) { // a130ec |
| 721 | d = str_mars[a & 3]; |
| 722 | goto out; |
| 723 | } |
| 724 | |
| 725 | elprintf(EL_UIO, "m68k unmapped r8 [%06x] @%06x", a, SekPc); |
| 726 | return d; |
| 727 | |
| 728 | out: |
| 729 | elprintf(EL_32X, "m68k 32x r8 [%06x] %02x @%06x", a, d, SekPc); |
| 730 | return d; |
| 731 | } |
| 732 | |
| 733 | u32 PicoRead16_32x(u32 a) |
| 734 | { |
| 735 | u32 d = 0; |
| 736 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 737 | d = Pico32x.regs[(a & 0x3f) / 2]; |
| 738 | goto out; |
| 739 | } |
| 740 | |
| 741 | if ((a & 0xfffc) == 0x30ec) { // a130ec |
| 742 | d = !(a & 2) ? ('M'<<8)|'A' : ('R'<<8)|'S'; |
| 743 | goto out; |
| 744 | } |
| 745 | |
| 746 | elprintf(EL_UIO, "m68k unmapped r16 [%06x] @%06x", a, SekPc); |
| 747 | return d; |
| 748 | |
| 749 | out: |
| 750 | elprintf(EL_32X, "m68k 32x r16 [%06x] %04x @%06x", a, d, SekPc); |
| 751 | return d; |
| 752 | } |
| 753 | |
| 754 | void PicoWrite8_32x(u32 a, u32 d) |
| 755 | { |
| 756 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 757 | u16 *r = Pico32x.regs; |
| 758 | |
| 759 | elprintf(EL_32X, "m68k 32x w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 760 | a &= 0x3f; |
| 761 | if (a == 1) { |
| 762 | if ((d ^ r[0]) & d & P32XS_ADEN) { |
| 763 | Pico32xStartup(); |
| 764 | r[0] &= ~P32XS_nRES; // causes reset if specified by this write |
| 765 | r[0] |= P32XS_ADEN; |
| 766 | p32x_reg_write8(a, d); // forward for reset processing |
| 767 | } |
| 768 | return; |
| 769 | } |
| 770 | |
| 771 | // allow only COMM for now |
| 772 | if ((a & 0x30) == 0x20) { |
| 773 | u8 *r8 = (u8 *)r; |
| 774 | r8[a ^ 1] = d; |
| 775 | } |
| 776 | return; |
| 777 | } |
| 778 | |
| 779 | elprintf(EL_UIO, "m68k unmapped w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 780 | } |
| 781 | |
| 782 | void PicoWrite16_32x(u32 a, u32 d) |
| 783 | { |
| 784 | if ((a & 0xffc0) == 0x5100) { // a15100 |
| 785 | u16 *r = Pico32x.regs; |
| 786 | |
| 787 | elprintf(EL_UIO, "m68k 32x w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 788 | a &= 0x3e; |
| 789 | if (a == 0) { |
| 790 | if ((d ^ r[0]) & d & P32XS_ADEN) { |
| 791 | Pico32xStartup(); |
| 792 | r[0] &= ~P32XS_nRES; // causes reset if specified by this write |
| 793 | r[0] |= P32XS_ADEN; |
| 794 | p32x_reg_write16(a, d); // forward for reset processing |
| 795 | } |
| 796 | return; |
| 797 | } |
| 798 | |
| 799 | // allow only COMM for now |
| 800 | if ((a & 0x30) == 0x20) |
| 801 | r[a / 2] = d; |
| 802 | return; |
| 803 | } |
| 804 | |
| 805 | elprintf(EL_UIO, "m68k unmapped w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 806 | } |
| 807 | |
| 808 | /* quirk: in both normal and overwrite areas only nonzero values go through */ |
| 809 | #define sh2_write8_dramN(n) \ |
| 810 | if ((d & 0xff) != 0) { \ |
| 811 | u8 *dram = (u8 *)Pico32xMem->dram[n]; \ |
| 812 | dram[(a & 0x1ffff) ^ 1] = d; \ |
| 813 | } |
| 814 | |
| 815 | static void m68k_write8_dram0_ow(u32 a, u32 d) |
| 816 | { |
| 817 | sh2_write8_dramN(0); |
| 818 | } |
| 819 | |
| 820 | static void m68k_write8_dram1_ow(u32 a, u32 d) |
| 821 | { |
| 822 | sh2_write8_dramN(1); |
| 823 | } |
| 824 | |
| 825 | #define sh2_write16_dramN(n) \ |
| 826 | u16 *pd = &Pico32xMem->dram[n][(a & 0x1ffff) / 2]; \ |
| 827 | if (!(a & 0x20000)) { \ |
| 828 | *pd = d; \ |
| 829 | return; \ |
| 830 | } \ |
| 831 | /* overwrite */ \ |
| 832 | if (!(d & 0xff00)) d |= *pd & 0xff00; \ |
| 833 | if (!(d & 0x00ff)) d |= *pd & 0x00ff; \ |
| 834 | *pd = d; |
| 835 | |
| 836 | static void m68k_write16_dram0_ow(u32 a, u32 d) |
| 837 | { |
| 838 | sh2_write16_dramN(0); |
| 839 | } |
| 840 | |
| 841 | static void m68k_write16_dram1_ow(u32 a, u32 d) |
| 842 | { |
| 843 | sh2_write16_dramN(1); |
| 844 | } |
| 845 | |
| 846 | // ----------------------------------------------------------------- |
| 847 | |
| 848 | // hint vector is writeable |
| 849 | static void PicoWrite8_hint(u32 a, u32 d) |
| 850 | { |
| 851 | if ((a & 0xfffc) == 0x0070) { |
| 852 | Pico32xMem->m68k_rom[a ^ 1] = d; |
| 853 | return; |
| 854 | } |
| 855 | |
| 856 | elprintf(EL_UIO, "m68k unmapped w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); |
| 857 | } |
| 858 | |
| 859 | static void PicoWrite16_hint(u32 a, u32 d) |
| 860 | { |
| 861 | if ((a & 0xfffc) == 0x0070) { |
| 862 | ((u16 *)Pico32xMem->m68k_rom)[a/2] = d; |
| 863 | return; |
| 864 | } |
| 865 | |
| 866 | elprintf(EL_UIO, "m68k unmapped w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); |
| 867 | } |
| 868 | |
| 869 | static void bank_switch(int b) |
| 870 | { |
| 871 | unsigned int rs, bank; |
| 872 | |
| 873 | bank = b << 20; |
| 874 | if (bank >= Pico.romsize) { |
| 875 | elprintf(EL_32X|EL_ANOMALY, "missing bank @ %06x", bank); |
| 876 | return; |
| 877 | } |
| 878 | |
| 879 | // 32X ROM (unbanked, XXX: consider mirroring?) |
| 880 | rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
| 881 | rs -= bank; |
| 882 | if (rs > 0x100000) |
| 883 | rs = 0x100000; |
| 884 | cpu68k_map_set(m68k_read8_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); |
| 885 | cpu68k_map_set(m68k_read16_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); |
| 886 | |
| 887 | elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); |
| 888 | |
| 889 | #ifdef EMU_F68K |
| 890 | // setup FAME fetchmap |
| 891 | for (rs = 0x90; rs < 0xa0; rs++) |
| 892 | PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom + bank - 0x900000; |
| 893 | #endif |
| 894 | } |
| 895 | |
| 896 | // ----------------------------------------------------------------- |
| 897 | // SH2 |
| 898 | // ----------------------------------------------------------------- |
| 899 | |
| 900 | // read8 |
| 901 | static u32 sh2_read8_unmapped(u32 a, SH2 *sh2) |
| 902 | { |
| 903 | elprintf(EL_UIO, "%csh2 unmapped r8 [%08x] %02x @%06x", |
| 904 | sh2->is_slave ? 's' : 'm', a, 0, sh2_pc(sh2)); |
| 905 | return 0; |
| 906 | } |
| 907 | |
| 908 | static u32 sh2_read8_cs0(u32 a, SH2 *sh2) |
| 909 | { |
| 910 | u32 d = 0; |
| 911 | |
| 912 | // 0x3ff00 is veridied |
| 913 | if ((a & 0x3ff00) == 0x4000) { |
| 914 | d = p32x_sh2reg_read16(a, sh2); |
| 915 | goto out_16to8; |
| 916 | } |
| 917 | |
| 918 | if ((a & 0x3ff00) == 0x4100) { |
| 919 | d = p32x_vdp_read16(a); |
| 920 | sh2_poll_detect(sh2, a, SH2_STATE_VPOLL); |
| 921 | goto out_16to8; |
| 922 | } |
| 923 | |
| 924 | // TODO: mirroring? |
| 925 | if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m)) |
| 926 | return Pico32xMem->sh2_rom_m[a ^ 1]; |
| 927 | if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s)) |
| 928 | return Pico32xMem->sh2_rom_s[a ^ 1]; |
| 929 | |
| 930 | if ((a & 0x3fe00) == 0x4200) { |
| 931 | d = Pico32xMem->pal[(a & 0x1ff) / 2]; |
| 932 | goto out_16to8; |
| 933 | } |
| 934 | |
| 935 | return sh2_read8_unmapped(a, sh2); |
| 936 | |
| 937 | out_16to8: |
| 938 | if (a & 1) |
| 939 | d &= 0xff; |
| 940 | else |
| 941 | d >>= 8; |
| 942 | |
| 943 | elprintf(EL_32X, "%csh2 r8 [%08x] %02x @%06x", |
| 944 | sh2->is_slave ? 's' : 'm', a, d, sh2_pc(sh2)); |
| 945 | return d; |
| 946 | } |
| 947 | |
| 948 | static u32 sh2_read8_da(u32 a, SH2 *sh2) |
| 949 | { |
| 950 | return sh2->data_array[(a & 0xfff) ^ 1]; |
| 951 | } |
| 952 | |
| 953 | // read16 |
| 954 | static u32 sh2_read16_unmapped(u32 a, SH2 *sh2) |
| 955 | { |
| 956 | elprintf(EL_UIO, "%csh2 unmapped r16 [%08x] %04x @%06x", |
| 957 | sh2->is_slave ? 's' : 'm', a, 0, sh2_pc(sh2)); |
| 958 | return 0; |
| 959 | } |
| 960 | |
| 961 | static u32 sh2_read16_cs0(u32 a, SH2 *sh2) |
| 962 | { |
| 963 | u32 d = 0; |
| 964 | |
| 965 | if ((a & 0x3ff00) == 0x4000) { |
| 966 | d = p32x_sh2reg_read16(a, sh2); |
| 967 | if (!(EL_LOGMASK & EL_PWM) && (a & 0x30) == 0x30) // hide PWM |
| 968 | return d; |
| 969 | goto out; |
| 970 | } |
| 971 | |
| 972 | if ((a & 0x3ff00) == 0x4100) { |
| 973 | d = p32x_vdp_read16(a); |
| 974 | sh2_poll_detect(sh2, a, SH2_STATE_VPOLL); |
| 975 | goto out; |
| 976 | } |
| 977 | |
| 978 | if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m)) |
| 979 | return *(u16 *)(Pico32xMem->sh2_rom_m + a); |
| 980 | if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s)) |
| 981 | return *(u16 *)(Pico32xMem->sh2_rom_s + a); |
| 982 | |
| 983 | if ((a & 0x3fe00) == 0x4200) { |
| 984 | d = Pico32xMem->pal[(a & 0x1ff) / 2]; |
| 985 | goto out; |
| 986 | } |
| 987 | |
| 988 | return sh2_read16_unmapped(a, sh2); |
| 989 | |
| 990 | out: |
| 991 | elprintf(EL_32X, "%csh2 r16 [%08x] %04x @%06x", |
| 992 | sh2->is_slave ? 's' : 'm', a, d, sh2_pc(sh2)); |
| 993 | return d; |
| 994 | } |
| 995 | |
| 996 | static u32 sh2_read16_da(u32 a, SH2 *sh2) |
| 997 | { |
| 998 | return ((u16 *)sh2->data_array)[(a & 0xfff) / 2]; |
| 999 | } |
| 1000 | |
| 1001 | // writes |
| 1002 | static void REGPARM(3) sh2_write_ignore(u32 a, u32 d, SH2 *sh2) |
| 1003 | { |
| 1004 | } |
| 1005 | |
| 1006 | // write8 |
| 1007 | static void REGPARM(3) sh2_write8_unmapped(u32 a, u32 d, SH2 *sh2) |
| 1008 | { |
| 1009 | elprintf(EL_UIO, "%csh2 unmapped w8 [%08x] %02x @%06x", |
| 1010 | sh2->is_slave ? 's' : 'm', a, d & 0xff, sh2_pc(sh2)); |
| 1011 | } |
| 1012 | |
| 1013 | static void REGPARM(3) sh2_write8_cs0(u32 a, u32 d, SH2 *sh2) |
| 1014 | { |
| 1015 | elprintf(EL_32X, "%csh2 w8 [%08x] %02x @%06x", |
| 1016 | sh2->is_slave ? 's' : 'm', a, d & 0xff, sh2_pc(sh2)); |
| 1017 | |
| 1018 | if (Pico32x.regs[0] & P32XS_FM) { |
| 1019 | if ((a & 0x3ff00) == 0x4100) { |
| 1020 | sh2->poll_addr = 0; |
| 1021 | p32x_vdp_write8(a, d); |
| 1022 | return; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | if ((a & 0x3ff00) == 0x4000) { |
| 1027 | p32x_sh2reg_write8(a, d, sh2); |
| 1028 | return; |
| 1029 | } |
| 1030 | |
| 1031 | sh2_write8_unmapped(a, d, sh2); |
| 1032 | } |
| 1033 | |
| 1034 | static void REGPARM(3) sh2_write8_dram0(u32 a, u32 d, SH2 *sh2) |
| 1035 | { |
| 1036 | sh2_write8_dramN(0); |
| 1037 | } |
| 1038 | |
| 1039 | static void REGPARM(3) sh2_write8_dram1(u32 a, u32 d, SH2 *sh2) |
| 1040 | { |
| 1041 | sh2_write8_dramN(1); |
| 1042 | } |
| 1043 | |
| 1044 | static void REGPARM(3) sh2_write8_sdram(u32 a, u32 d, SH2 *sh2) |
| 1045 | { |
| 1046 | u32 a1 = a & 0x3ffff; |
| 1047 | #ifdef DRC_SH2 |
| 1048 | int t = Pico32xMem->drcblk_ram[a1 >> SH2_DRCBLK_RAM_SHIFT]; |
| 1049 | if (t) |
| 1050 | sh2_drc_wcheck_ram(a, t, sh2->is_slave); |
| 1051 | #endif |
| 1052 | Pico32xMem->sdram[a1 ^ 1] = d; |
| 1053 | } |
| 1054 | |
| 1055 | static void REGPARM(3) sh2_write8_da(u32 a, u32 d, SH2 *sh2) |
| 1056 | { |
| 1057 | u32 a1 = a & 0xfff; |
| 1058 | #ifdef DRC_SH2 |
| 1059 | int id = sh2->is_slave; |
| 1060 | int t = Pico32xMem->drcblk_da[id][a1 >> SH2_DRCBLK_DA_SHIFT]; |
| 1061 | if (t) |
| 1062 | sh2_drc_wcheck_da(a, t, id); |
| 1063 | #endif |
| 1064 | sh2->data_array[a1 ^ 1] = d; |
| 1065 | } |
| 1066 | |
| 1067 | // write16 |
| 1068 | static void REGPARM(3) sh2_write16_unmapped(u32 a, u32 d, SH2 *sh2) |
| 1069 | { |
| 1070 | elprintf(EL_UIO, "%csh2 unmapped w16 [%08x] %04x @%06x", |
| 1071 | sh2->is_slave ? 's' : 'm', a, d & 0xffff, sh2_pc(sh2)); |
| 1072 | } |
| 1073 | |
| 1074 | static void REGPARM(3) sh2_write16_cs0(u32 a, u32 d, SH2 *sh2) |
| 1075 | { |
| 1076 | if (((EL_LOGMASK & EL_PWM) || (a & 0x30) != 0x30)) // hide PWM |
| 1077 | elprintf(EL_32X, "%csh2 w16 [%08x] %04x @%06x", |
| 1078 | sh2->is_slave ? 's' : 'm', a, d & 0xffff, sh2_pc(sh2)); |
| 1079 | |
| 1080 | if (Pico32x.regs[0] & P32XS_FM) { |
| 1081 | if ((a & 0x3ff00) == 0x4100) { |
| 1082 | sh2->poll_addr = 0; |
| 1083 | p32x_vdp_write16(a, d, sh2); |
| 1084 | return; |
| 1085 | } |
| 1086 | |
| 1087 | if ((a & 0x3fe00) == 0x4200) { |
| 1088 | Pico32xMem->pal[(a & 0x1ff) / 2] = d; |
| 1089 | Pico32x.dirty_pal = 1; |
| 1090 | return; |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | if ((a & 0x3ff00) == 0x4000) { |
| 1095 | p32x_sh2reg_write16(a, d, sh2); |
| 1096 | return; |
| 1097 | } |
| 1098 | |
| 1099 | sh2_write16_unmapped(a, d, sh2); |
| 1100 | } |
| 1101 | |
| 1102 | static void REGPARM(3) sh2_write16_dram0(u32 a, u32 d, SH2 *sh2) |
| 1103 | { |
| 1104 | sh2_write16_dramN(0); |
| 1105 | } |
| 1106 | |
| 1107 | static void REGPARM(3) sh2_write16_dram1(u32 a, u32 d, SH2 *sh2) |
| 1108 | { |
| 1109 | sh2_write16_dramN(1); |
| 1110 | } |
| 1111 | |
| 1112 | static void REGPARM(3) sh2_write16_sdram(u32 a, u32 d, SH2 *sh2) |
| 1113 | { |
| 1114 | u32 a1 = a & 0x3ffff; |
| 1115 | #ifdef DRC_SH2 |
| 1116 | int t = Pico32xMem->drcblk_ram[a1 >> SH2_DRCBLK_RAM_SHIFT]; |
| 1117 | if (t) |
| 1118 | sh2_drc_wcheck_ram(a, t, sh2->is_slave); |
| 1119 | #endif |
| 1120 | ((u16 *)Pico32xMem->sdram)[a1 / 2] = d; |
| 1121 | } |
| 1122 | |
| 1123 | static void REGPARM(3) sh2_write16_da(u32 a, u32 d, SH2 *sh2) |
| 1124 | { |
| 1125 | u32 a1 = a & 0xfff; |
| 1126 | #ifdef DRC_SH2 |
| 1127 | int id = sh2->is_slave; |
| 1128 | int t = Pico32xMem->drcblk_da[id][a1 >> SH2_DRCBLK_DA_SHIFT]; |
| 1129 | if (t) |
| 1130 | sh2_drc_wcheck_da(a, t, id); |
| 1131 | #endif |
| 1132 | ((u16 *)sh2->data_array)[a1 / 2] = d; |
| 1133 | } |
| 1134 | |
| 1135 | |
| 1136 | typedef u32 (sh2_read_handler)(u32 a, SH2 *sh2); |
| 1137 | typedef void REGPARM(3) (sh2_write_handler)(u32 a, u32 d, SH2 *sh2); |
| 1138 | |
| 1139 | #define SH2MAP_ADDR2OFFS_R(a) \ |
| 1140 | ((u32)(a) >> SH2_READ_SHIFT) |
| 1141 | |
| 1142 | #define SH2MAP_ADDR2OFFS_W(a) \ |
| 1143 | ((u32)(a) >> SH2_WRITE_SHIFT) |
| 1144 | |
| 1145 | u32 REGPARM(2) p32x_sh2_read8(u32 a, SH2 *sh2) |
| 1146 | { |
| 1147 | const sh2_memmap *sh2_map = sh2->read8_map; |
| 1148 | uptr p; |
| 1149 | |
| 1150 | sh2_map += SH2MAP_ADDR2OFFS_R(a); |
| 1151 | p = sh2_map->addr; |
| 1152 | if (map_flag_set(p)) |
| 1153 | return ((sh2_read_handler *)(p << 1))(a, sh2); |
| 1154 | else |
| 1155 | return *(u8 *)((p << 1) + ((a & sh2_map->mask) ^ 1)); |
| 1156 | } |
| 1157 | |
| 1158 | u32 REGPARM(2) p32x_sh2_read16(u32 a, SH2 *sh2) |
| 1159 | { |
| 1160 | const sh2_memmap *sh2_map = sh2->read16_map; |
| 1161 | uptr p; |
| 1162 | |
| 1163 | sh2_map += SH2MAP_ADDR2OFFS_R(a); |
| 1164 | p = sh2_map->addr; |
| 1165 | if (map_flag_set(p)) |
| 1166 | return ((sh2_read_handler *)(p << 1))(a, sh2); |
| 1167 | else |
| 1168 | return *(u16 *)((p << 1) + ((a & sh2_map->mask) & ~1)); |
| 1169 | } |
| 1170 | |
| 1171 | u32 REGPARM(2) p32x_sh2_read32(u32 a, SH2 *sh2) |
| 1172 | { |
| 1173 | const sh2_memmap *sh2_map = sh2->read16_map; |
| 1174 | sh2_read_handler *handler; |
| 1175 | u32 offs; |
| 1176 | uptr p; |
| 1177 | |
| 1178 | offs = SH2MAP_ADDR2OFFS_R(a); |
| 1179 | sh2_map += offs; |
| 1180 | p = sh2_map->addr; |
| 1181 | if (!map_flag_set(p)) { |
| 1182 | // XXX: maybe 32bit access instead with ror? |
| 1183 | u16 *pd = (u16 *)((p << 1) + ((a & sh2_map->mask) & ~1)); |
| 1184 | return (pd[0] << 16) | pd[1]; |
| 1185 | } |
| 1186 | |
| 1187 | if (offs == 0x1f) |
| 1188 | return sh2_peripheral_read32(a, sh2); |
| 1189 | |
| 1190 | handler = (sh2_read_handler *)(p << 1); |
| 1191 | return (handler(a, sh2) << 16) | handler(a + 2, sh2); |
| 1192 | } |
| 1193 | |
| 1194 | void REGPARM(3) p32x_sh2_write8(u32 a, u32 d, SH2 *sh2) |
| 1195 | { |
| 1196 | const void **sh2_wmap = sh2->write8_tab; |
| 1197 | sh2_write_handler *wh; |
| 1198 | |
| 1199 | wh = sh2_wmap[SH2MAP_ADDR2OFFS_W(a)]; |
| 1200 | wh(a, d, sh2); |
| 1201 | } |
| 1202 | |
| 1203 | void REGPARM(3) p32x_sh2_write16(u32 a, u32 d, SH2 *sh2) |
| 1204 | { |
| 1205 | const void **sh2_wmap = sh2->write16_tab; |
| 1206 | sh2_write_handler *wh; |
| 1207 | |
| 1208 | wh = sh2_wmap[SH2MAP_ADDR2OFFS_W(a)]; |
| 1209 | wh(a, d, sh2); |
| 1210 | } |
| 1211 | |
| 1212 | void REGPARM(3) p32x_sh2_write32(u32 a, u32 d, SH2 *sh2) |
| 1213 | { |
| 1214 | const void **sh2_wmap = sh2->write16_tab; |
| 1215 | sh2_write_handler *wh; |
| 1216 | u32 offs; |
| 1217 | |
| 1218 | offs = SH2MAP_ADDR2OFFS_W(a); |
| 1219 | |
| 1220 | if (offs == SH2MAP_ADDR2OFFS_W(0xffffc000)) { |
| 1221 | sh2_peripheral_write32(a, d, sh2); |
| 1222 | return; |
| 1223 | } |
| 1224 | |
| 1225 | wh = sh2_wmap[offs]; |
| 1226 | wh(a, d >> 16, sh2); |
| 1227 | wh(a + 2, d, sh2); |
| 1228 | } |
| 1229 | |
| 1230 | // ----------------------------------------------------------------- |
| 1231 | |
| 1232 | static const u16 msh2_code[] = { |
| 1233 | // trap instructions |
| 1234 | 0xaffe, // bra <self> |
| 1235 | 0x0009, // nop |
| 1236 | // have to wait a bit until m68k initial program finishes clearing stuff |
| 1237 | // to avoid races with game SH2 code, like in Tempo |
| 1238 | 0xd004, // mov.l @(_m_ok,pc), r0 |
| 1239 | 0xd105, // mov.l @(_cnt,pc), r1 |
| 1240 | 0xd205, // mov.l @(_start,pc), r2 |
| 1241 | 0x71ff, // add #-1, r1 |
| 1242 | 0x4115, // cmp/pl r1 |
| 1243 | 0x89fc, // bt -2 |
| 1244 | 0xc208, // mov.l r0, @(h'20,gbr) |
| 1245 | 0x6822, // mov.l @r2, r8 |
| 1246 | 0x482b, // jmp @r8 |
| 1247 | 0x0009, // nop |
| 1248 | ('M'<<8)|'_', ('O'<<8)|'K', |
| 1249 | 0x0001, 0x0000, |
| 1250 | 0x2200, 0x03e0 // master start pointer in ROM |
| 1251 | }; |
| 1252 | |
| 1253 | static const u16 ssh2_code[] = { |
| 1254 | 0xaffe, // bra <self> |
| 1255 | 0x0009, // nop |
| 1256 | // code to wait for master, in case authentic master BIOS is used |
| 1257 | 0xd104, // mov.l @(_m_ok,pc), r1 |
| 1258 | 0xd206, // mov.l @(_start,pc), r2 |
| 1259 | 0xc608, // mov.l @(h'20,gbr), r0 |
| 1260 | 0x3100, // cmp/eq r0, r1 |
| 1261 | 0x8bfc, // bf #-2 |
| 1262 | 0xd003, // mov.l @(_s_ok,pc), r0 |
| 1263 | 0xc209, // mov.l r0, @(h'24,gbr) |
| 1264 | 0x6822, // mov.l @r2, r8 |
| 1265 | 0x482b, // jmp @r8 |
| 1266 | 0x0009, // nop |
| 1267 | ('M'<<8)|'_', ('O'<<8)|'K', |
| 1268 | ('S'<<8)|'_', ('O'<<8)|'K', |
| 1269 | 0x2200, 0x03e4 // slave start pointer in ROM |
| 1270 | }; |
| 1271 | |
| 1272 | #define HWSWAP(x) (((u16)(x) << 16) | ((x) >> 16)) |
| 1273 | static void get_bios(void) |
| 1274 | { |
| 1275 | u16 *ps; |
| 1276 | u32 *pl; |
| 1277 | int i; |
| 1278 | |
| 1279 | // M68K ROM |
| 1280 | if (p32x_bios_g != NULL) { |
| 1281 | elprintf(EL_STATUS|EL_32X, "32x: using supplied 68k BIOS"); |
| 1282 | Byteswap(Pico32xMem->m68k_rom, p32x_bios_g, sizeof(Pico32xMem->m68k_rom)); |
| 1283 | } |
| 1284 | else { |
| 1285 | // generate 68k ROM |
| 1286 | ps = (u16 *)Pico32xMem->m68k_rom; |
| 1287 | pl = (u32 *)ps; |
| 1288 | for (i = 1; i < 0xc0/4; i++) |
| 1289 | pl[i] = HWSWAP(0x880200 + (i - 1) * 6); |
| 1290 | |
| 1291 | // fill with nops |
| 1292 | for (i = 0xc0/2; i < 0x100/2; i++) |
| 1293 | ps[i] = 0x4e71; |
| 1294 | |
| 1295 | #if 0 |
| 1296 | ps[0xc0/2] = 0x46fc; |
| 1297 | ps[0xc2/2] = 0x2700; // move #0x2700,sr |
| 1298 | ps[0xfe/2] = 0x60fe; // jump to self |
| 1299 | #else |
| 1300 | ps[0xfe/2] = 0x4e75; // rts |
| 1301 | #endif |
| 1302 | } |
| 1303 | // fill remaining m68k_rom page with game ROM |
| 1304 | memcpy(Pico32xMem->m68k_rom_bank + sizeof(Pico32xMem->m68k_rom), |
| 1305 | Pico.rom + sizeof(Pico32xMem->m68k_rom), |
| 1306 | sizeof(Pico32xMem->m68k_rom_bank) - sizeof(Pico32xMem->m68k_rom)); |
| 1307 | |
| 1308 | // MSH2 |
| 1309 | if (p32x_bios_m != NULL) { |
| 1310 | elprintf(EL_STATUS|EL_32X, "32x: using supplied master SH2 BIOS"); |
| 1311 | Byteswap(Pico32xMem->sh2_rom_m, p32x_bios_m, sizeof(Pico32xMem->sh2_rom_m)); |
| 1312 | } |
| 1313 | else { |
| 1314 | pl = (u32 *)Pico32xMem->sh2_rom_m; |
| 1315 | |
| 1316 | // fill exception vector table to our trap address |
| 1317 | for (i = 0; i < 128; i++) |
| 1318 | pl[i] = HWSWAP(0x200); |
| 1319 | |
| 1320 | // startup code |
| 1321 | memcpy(Pico32xMem->sh2_rom_m + 0x200, msh2_code, sizeof(msh2_code)); |
| 1322 | |
| 1323 | // reset SP |
| 1324 | pl[1] = pl[3] = HWSWAP(0x6040000); |
| 1325 | // start |
| 1326 | pl[0] = pl[2] = HWSWAP(0x204); |
| 1327 | } |
| 1328 | |
| 1329 | // SSH2 |
| 1330 | if (p32x_bios_s != NULL) { |
| 1331 | elprintf(EL_STATUS|EL_32X, "32x: using supplied slave SH2 BIOS"); |
| 1332 | Byteswap(Pico32xMem->sh2_rom_s, p32x_bios_s, sizeof(Pico32xMem->sh2_rom_s)); |
| 1333 | } |
| 1334 | else { |
| 1335 | pl = (u32 *)Pico32xMem->sh2_rom_s; |
| 1336 | |
| 1337 | // fill exception vector table to our trap address |
| 1338 | for (i = 0; i < 128; i++) |
| 1339 | pl[i] = HWSWAP(0x200); |
| 1340 | |
| 1341 | // startup code |
| 1342 | memcpy(Pico32xMem->sh2_rom_s + 0x200, ssh2_code, sizeof(ssh2_code)); |
| 1343 | |
| 1344 | // reset SP |
| 1345 | pl[1] = pl[3] = HWSWAP(0x603f800); |
| 1346 | // start |
| 1347 | pl[0] = pl[2] = HWSWAP(0x204); |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | #define MAP_MEMORY(m) ((uptr)(m) >> 1) |
| 1352 | #define MAP_HANDLER(h) ( ((uptr)(h) >> 1) | ((uptr)1 << (sizeof(uptr) * 8 - 1)) ) |
| 1353 | |
| 1354 | static sh2_memmap sh2_read8_map[0x80], sh2_read16_map[0x80]; |
| 1355 | // for writes we are using handlers only |
| 1356 | static sh2_write_handler *sh2_write8_map[0x80], *sh2_write16_map[0x80]; |
| 1357 | |
| 1358 | void Pico32xSwapDRAM(int b) |
| 1359 | { |
| 1360 | cpu68k_map_set(m68k_read8_map, 0x840000, 0x85ffff, Pico32xMem->dram[b], 0); |
| 1361 | cpu68k_map_set(m68k_read16_map, 0x840000, 0x85ffff, Pico32xMem->dram[b], 0); |
| 1362 | cpu68k_map_set(m68k_read8_map, 0x860000, 0x87ffff, Pico32xMem->dram[b], 0); |
| 1363 | cpu68k_map_set(m68k_read16_map, 0x860000, 0x87ffff, Pico32xMem->dram[b], 0); |
| 1364 | cpu68k_map_set(m68k_write8_map, 0x840000, 0x87ffff, |
| 1365 | b ? m68k_write8_dram1_ow : m68k_write8_dram0_ow, 1); |
| 1366 | cpu68k_map_set(m68k_write16_map, 0x840000, 0x87ffff, |
| 1367 | b ? m68k_write16_dram1_ow : m68k_write16_dram0_ow, 1); |
| 1368 | |
| 1369 | // SH2 |
| 1370 | sh2_read8_map[0x04/2].addr = sh2_read8_map[0x24/2].addr = |
| 1371 | sh2_read16_map[0x04/2].addr = sh2_read16_map[0x24/2].addr = MAP_MEMORY(Pico32xMem->dram[b]); |
| 1372 | |
| 1373 | sh2_write8_map[0x04/2] = sh2_write8_map[0x24/2] = b ? sh2_write8_dram1 : sh2_write8_dram0; |
| 1374 | sh2_write16_map[0x04/2] = sh2_write16_map[0x24/2] = b ? sh2_write16_dram1 : sh2_write16_dram0; |
| 1375 | } |
| 1376 | |
| 1377 | void PicoMemSetup32x(void) |
| 1378 | { |
| 1379 | unsigned int rs; |
| 1380 | int i; |
| 1381 | |
| 1382 | Pico32xMem = plat_mmap(0x06000000, sizeof(*Pico32xMem), 0, 0); |
| 1383 | if (Pico32xMem == NULL) { |
| 1384 | elprintf(EL_STATUS, "OOM"); |
| 1385 | return; |
| 1386 | } |
| 1387 | |
| 1388 | get_bios(); |
| 1389 | |
| 1390 | // cartridge area becomes unmapped |
| 1391 | // XXX: we take the easy way and don't unmap ROM, |
| 1392 | // so that we can avoid handling the RV bit. |
| 1393 | // m68k_map_unmap(0x000000, 0x3fffff); |
| 1394 | |
| 1395 | // MD ROM area |
| 1396 | rs = sizeof(Pico32xMem->m68k_rom_bank); |
| 1397 | cpu68k_map_set(m68k_read8_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); |
| 1398 | cpu68k_map_set(m68k_read16_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); |
| 1399 | cpu68k_map_set(m68k_write8_map, 0x000000, rs - 1, PicoWrite8_hint, 1); // TODO verify |
| 1400 | cpu68k_map_set(m68k_write16_map, 0x000000, rs - 1, PicoWrite16_hint, 1); |
| 1401 | |
| 1402 | // 32X ROM (unbanked, XXX: consider mirroring?) |
| 1403 | rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; |
| 1404 | if (rs > 0x80000) |
| 1405 | rs = 0x80000; |
| 1406 | cpu68k_map_set(m68k_read8_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); |
| 1407 | cpu68k_map_set(m68k_read16_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); |
| 1408 | #ifdef EMU_F68K |
| 1409 | // setup FAME fetchmap |
| 1410 | PicoCpuFM68k.Fetch[0] = (unsigned long)Pico32xMem->m68k_rom; |
| 1411 | for (rs = 0x88; rs < 0x90; rs++) |
| 1412 | PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom - 0x880000; |
| 1413 | #endif |
| 1414 | |
| 1415 | // 32X ROM (banked) |
| 1416 | bank_switch(0); |
| 1417 | |
| 1418 | // SYS regs |
| 1419 | cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_32x_on, 1); |
| 1420 | cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_32x_on, 1); |
| 1421 | cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_32x_on, 1); |
| 1422 | cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_32x_on, 1); |
| 1423 | |
| 1424 | // SH2 maps: A31,A30,A29,CS1,CS0 |
| 1425 | // all unmapped by default |
| 1426 | for (i = 0; i < ARRAY_SIZE(sh2_read8_map); i++) { |
| 1427 | sh2_read8_map[i].addr = MAP_HANDLER(sh2_read8_unmapped); |
| 1428 | sh2_read16_map[i].addr = MAP_HANDLER(sh2_read16_unmapped); |
| 1429 | } |
| 1430 | |
| 1431 | for (i = 0; i < ARRAY_SIZE(sh2_write8_map); i++) { |
| 1432 | sh2_write8_map[i] = sh2_write8_unmapped; |
| 1433 | sh2_write16_map[i] = sh2_write16_unmapped; |
| 1434 | } |
| 1435 | |
| 1436 | // "purge area" |
| 1437 | for (i = 0x40; i <= 0x5f; i++) { |
| 1438 | sh2_write8_map[i >> 1] = |
| 1439 | sh2_write16_map[i >> 1] = sh2_write_ignore; |
| 1440 | } |
| 1441 | |
| 1442 | // CS0 |
| 1443 | sh2_read8_map[0x00/2].addr = sh2_read8_map[0x20/2].addr = MAP_HANDLER(sh2_read8_cs0); |
| 1444 | sh2_read16_map[0x00/2].addr = sh2_read16_map[0x20/2].addr = MAP_HANDLER(sh2_read16_cs0); |
| 1445 | sh2_write8_map[0x00/2] = sh2_write8_map[0x20/2] = sh2_write8_cs0; |
| 1446 | sh2_write16_map[0x00/2] = sh2_write16_map[0x20/2] = sh2_write16_cs0; |
| 1447 | // CS1 - ROM |
| 1448 | sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = |
| 1449 | sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom); |
| 1450 | sh2_read8_map[0x02/2].mask = sh2_read8_map[0x22/2].mask = |
| 1451 | sh2_read16_map[0x02/2].mask = sh2_read16_map[0x22/2].mask = 0x3fffff; // FIXME |
| 1452 | // CS2 - DRAM - done by Pico32xSwapDRAM() |
| 1453 | sh2_read8_map[0x04/2].mask = sh2_read8_map[0x24/2].mask = |
| 1454 | sh2_read16_map[0x04/2].mask = sh2_read16_map[0x24/2].mask = 0x01ffff; |
| 1455 | // CS3 - SDRAM |
| 1456 | sh2_read8_map[0x06/2].addr = sh2_read8_map[0x26/2].addr = |
| 1457 | sh2_read16_map[0x06/2].addr = sh2_read16_map[0x26/2].addr = MAP_MEMORY(Pico32xMem->sdram); |
| 1458 | sh2_write8_map[0x06/2] = sh2_write8_map[0x26/2] = sh2_write8_sdram; |
| 1459 | sh2_write16_map[0x06/2] = sh2_write16_map[0x26/2] = sh2_write16_sdram; |
| 1460 | sh2_read8_map[0x06/2].mask = sh2_read8_map[0x26/2].mask = |
| 1461 | sh2_read16_map[0x06/2].mask = sh2_read16_map[0x26/2].mask = 0x03ffff; |
| 1462 | // SH2 data array |
| 1463 | sh2_read8_map[0xc0/2].addr = MAP_HANDLER(sh2_read8_da); |
| 1464 | sh2_read16_map[0xc0/2].addr = MAP_HANDLER(sh2_read16_da); |
| 1465 | sh2_write8_map[0xc0/2] = sh2_write8_da; |
| 1466 | sh2_write16_map[0xc0/2] = sh2_write16_da; |
| 1467 | // SH2 IO |
| 1468 | sh2_read8_map[0xff/2].addr = MAP_HANDLER(sh2_peripheral_read8); |
| 1469 | sh2_read16_map[0xff/2].addr = MAP_HANDLER(sh2_peripheral_read16); |
| 1470 | sh2_write8_map[0xff/2] = sh2_peripheral_write8; |
| 1471 | sh2_write16_map[0xff/2] = sh2_peripheral_write16; |
| 1472 | |
| 1473 | // map DRAM area, both 68k and SH2 |
| 1474 | Pico32xSwapDRAM(1); |
| 1475 | |
| 1476 | msh2.read8_map = ssh2.read8_map = sh2_read8_map; |
| 1477 | msh2.read16_map = ssh2.read16_map = sh2_read16_map; |
| 1478 | msh2.write8_tab = ssh2.write8_tab = (const void **)(void *)sh2_write8_map; |
| 1479 | msh2.write16_tab = ssh2.write16_tab = (const void **)(void *)sh2_write16_map; |
| 1480 | |
| 1481 | sh2_drc_mem_setup(&msh2); |
| 1482 | sh2_drc_mem_setup(&ssh2); |
| 1483 | } |
| 1484 | |
| 1485 | void Pico32xMemStateLoaded(void) |
| 1486 | { |
| 1487 | bank_switch(Pico32x.regs[4 / 2]); |
| 1488 | Pico32xSwapDRAM((Pico32x.vdp_regs[0x0a / 2] & P32XV_FS) ^ P32XV_FS); |
| 1489 | memset(Pico32xMem->pwm, 0, sizeof(Pico32xMem->pwm)); |
| 1490 | Pico32x.dirty_pal = 1; |
| 1491 | |
| 1492 | Pico32x.emu_flags &= ~(P32XF_68KCPOLL | P32XF_68KVPOLL); |
| 1493 | memset(&m68k_poll, 0, sizeof(m68k_poll)); |
| 1494 | msh2.state = 0; |
| 1495 | msh2.poll_addr = msh2.poll_cycles = msh2.poll_cnt = 0; |
| 1496 | ssh2.state = 0; |
| 1497 | ssh2.poll_addr = ssh2.poll_cycles = ssh2.poll_cnt = 0; |
| 1498 | |
| 1499 | sh2_drc_flush_all(); |
| 1500 | } |
| 1501 | |
| 1502 | // vim:shiftwidth=2:ts=2:expandtab |