source/src/vm/mb61vh010.cpp

   1 /*
   2  * FM77AV/FM16β ALU [mb61vh010.cpp]
   3  *  of Fujitsu MB61VH010/011
   4  *
   5  * Author: K.Ohta <whatisthis.sowhat _at_ gmail.com>
   6  * License: GPLv2
   7  * History:
   8  *   Mar 28, 2015 : Initial
   9  *
  10  */
  11
  12 #include "mb61vh010.h"
  13
  14
  15 MB61VH010::MB61VH010(VM *parent_vm, EMU *parent_emu) : DEVICE(parent_vm, parent_emu)
  16 {
  17         p_emu = parent_emu;
  18         p_vm = parent_vm;
  19 }
  20
  21 MB61VH010::~MB61VH010()
  22 {
  23 }
  24
  25 uint8 MB61VH010::do_read(uint32 addr, uint32 bank)
  26 {
  27         uint32 raddr;
  28
  29         if(((1 << bank) & multi_page) != 0) return 0xff;
  30         if(is_400line) {
  31                 if((addr & 0xffff) < 0x8000) {
  32                         raddr = (addr  & 0x7fff) | (0x8000 * bank);
  33                         return target->read_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS);
  34                 }
  35         } else {
  36                 raddr = (addr & 0x3fff) | (0x4000 * bank);
  37                 return target->read_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS);
  38         }
  39         return 0xff;
  40 }
  41
  42 uint8 MB61VH010::do_write(uint32 addr, uint32 bank, uint8 data)
  43 {
  44         uint32 raddr;
  45         uint8 readdata;
  46
  47         if(((1 << bank) & multi_page) != 0) return 0xff;
  48         if((command_reg & 0x40) != 0) { // Calculate before writing
  49                 readdata = do_read(addr, bank);
  50                 //readdata = data;
  51                 if((command_reg & 0x20) != 0) { // NAND
  52                         readdata = readdata & cmp_status_reg;
  53                         data = data & (~cmp_status_reg);
  54                 } else { // AND
  55                         readdata = readdata & (~cmp_status_reg);
  56                         data = data & cmp_status_reg;
  57                 }
  58                 readdata = readdata | data;
  59         } else {
  60                 readdata = data;
  61         }
  62         if(is_400line) {
  63                 if((addr & 0xffff) < 0x8000) {
  64                         raddr = (addr & 0x7fff) | (0x8000 * bank);
  65                         target->write_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS, readdata);
  66                 }
  67         } else {
  68                 raddr = (addr & 0x3fff) | (0x4000 * bank);
  69                 target->write_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS, readdata);
  70         }
  71         return readdata;
  72 }
  73
  74
  75 uint8 MB61VH010::do_pset(uint32 addr)
  76 {
  77         int i;
  78         uint32 raddr = addr;  // Use banked ram.
  79         uint8 bitmask;
  80         uint8 srcdata;
  81         int planes_b = planes;
  82         if(planes_b >= 4) planes_b = 4;
  83         for(i = 0; i < planes_b; i++) {
  84                 if((bank_disable_reg & (1 << i)) != 0) {
  85                         continue;
  86                 }
  87                 if((color_reg & (1 << i)) == 0) {
  88                         bitmask = 0x00;
  89                 } else {
  90                         bitmask = 0xff;
  91                 }
  92
  93                 srcdata = do_read(addr, i);
  94                 bitmask = bitmask & (~mask_reg);
  95                 srcdata = srcdata & mask_reg;
  96                 srcdata = srcdata | bitmask;
  97                 do_write(addr, i, srcdata);
  98         }
  99         return 0xff;
 100 }
 101
 102 uint8 MB61VH010::do_blank(uint32 addr)
 103 {
 104         uint32 i;
 105         uint8 srcdata;
 106
 107         if(planes >= 4) planes = 4;
 108         for(i = 0; i < planes; i++) {
 109                 if((bank_disable_reg & (1 << i)) != 0) {
 110                         continue;
 111                 }
 112                 srcdata = do_read(addr, i);
 113                 srcdata = srcdata & mask_reg;
 114                 do_write(addr, i, srcdata);
 115         }
 116         return 0xff;
 117 }
 118
 119 uint8 MB61VH010::do_or(uint32 addr)
 120 {
 121         uint32 i;
 122         uint8 bitmask;
 123         uint8 srcdata;
 124
 125         if(planes >= 4) planes = 4;
 126         for(i = 0; i < planes; i++) {
 127                 if((bank_disable_reg & (1 << i)) != 0) {
 128                         continue;
 129                 }
 130                 srcdata = do_read(addr, i);
 131                 if((color_reg & (1 << i)) == 0) {
 132                         bitmask = srcdata; // srcdata | 0x00
 133                 } else {
 134                         bitmask = 0xff; // srcdata | 0xff
 135                 }
 136                 bitmask = bitmask & ~mask_reg;
 137                 srcdata = (srcdata & mask_reg) | bitmask;
 138                 do_write(addr, i, srcdata);
 139         }
 140         return 0xff;
 141 }
 142
 143 uint8 MB61VH010::do_and(uint32 addr)
 144 {
 145         uint32 i;
 146         uint8 bitmask;
 147         uint8 srcdata;
 148
 149         if(planes >= 4) planes = 4;
 150         for(i = 0; i < planes; i++) {
 151                 if((bank_disable_reg & (1 << i)) != 0) {
 152                         continue;
 153                 }
 154                 srcdata = do_read(addr, i);
 155                 if((color_reg & (1 << i)) == 0) {
 156                         bitmask = 0x00; // srcdata & 0x00
 157                 } else {
 158                         bitmask = srcdata; // srcdata & 0xff;
 159                 }
 160                 bitmask = bitmask & ~mask_reg;
 161                 srcdata = (srcdata & mask_reg) | bitmask;
 162                 do_write(addr, i, srcdata);
 163         }
 164         return 0xff;
 165 }
 166
 167 uint8 MB61VH010::do_xor(uint32 addr)
 168 {
 169         uint32 i;
 170         uint8 bitmask;
 171         uint8 srcdata;
 172
 173         if(planes >= 4) planes = 4;
 174         for(i = 0; i < planes; i++) {
 175                 if((bank_disable_reg & (1 << i)) != 0) {
 176                         continue;
 177                 }
 178                 srcdata = do_read(addr, i);
 179                 if((color_reg & (1 << i)) == 0) {
 180                         bitmask = srcdata ^ 0x00;
 181                 } else {
 182                         bitmask = srcdata ^ 0xff;
 183                 }
 184                 bitmask = bitmask & ~mask_reg;
 185                 srcdata = (srcdata & mask_reg) | bitmask;
 186                 do_write(addr, i, srcdata);
 187         }
 188         return 0xff;
 189 }
 190
 191 uint8 MB61VH010::do_not(uint32 addr)
 192 {
 193         uint32 i;
 194         uint8 bitmask;
 195         uint8 srcdata;
 196
 197         if(planes >= 4) planes = 4;
 198         for(i = 0; i < planes; i++) {
 199                 if((bank_disable_reg & (1 << i)) != 0) {
 200                         continue;
 201                 }
 202                 srcdata = do_read(addr, i);
 203                 bitmask = ~srcdata;
 204
 205                 bitmask = bitmask & ~mask_reg;
 206                 srcdata = (srcdata & mask_reg) | bitmask;
 207                 do_write(addr, i, srcdata);
 208         }
 209         return 0xff;
 210 }
 211
 212
 213 uint8 MB61VH010::do_tilepaint(uint32 addr)
 214 {
 215         uint32 i;
 216         uint8 bitmask;
 217         uint8 srcdata;
 218
 219         if(planes > 4) planes = 4;
 220         for(i = 0; i < planes; i++) {
 221                 if((bank_disable_reg & (1 << i)) != 0) {
 222                         continue;
 223                 }
 224                 srcdata = do_read(addr, i);
 225                 bitmask = tile_reg[i] & (~mask_reg);
 226                 srcdata = (srcdata & mask_reg) | bitmask;
 227                 do_write(addr, i, srcdata);
 228         }
 229         return 0xff;
 230 }
 231
 232 uint8 MB61VH010::do_compare(uint32 addr)
 233 {
 234         uint32 offset = 0x4000;
 235         uint8 r, g, b;
 236         uint8 disables = ~bank_disable_reg;
 237
 238         uint8 tmpcol;
 239         uint8 tmp_stat = 0;
 240         uint8 cmp_reg_bak[8];
 241         int k;
 242         int i;
 243         int j;
 244
 245         disables = disables & 0x07;
 246         cmp_status_reg = 0x00;
 247         k = 0;
 248         for(j = 0; j < 8; j++) {
 249                 if((cmp_color_data[j] & 0x80) == 0) {
 250                         cmp_reg_bak[k] = cmp_color_data[j] & disables;
 251                         k++;
 252                 }
 253         }
 254         cmp_status_reg = 0x00;
 255         if(k <= 0) return 0xff;
 256         b = r = g = 0;
 257         b = do_read(addr, 0);
 258         r = do_read(addr, 1);
 259         g = do_read(addr, 2);
 260         for(i = 0; i < 8; i++) {
 261                 tmp_stat <<= 1;
 262                 tmpcol  = (b & 0x80) >> 7;
 263                 tmpcol  = tmpcol | ((r & 0x80) >> 6);
 264                 tmpcol  = tmpcol | ((g & 0x80) >> 5);
 265                 //tmpcol |= ((t & 0x80) != 0) ? 8 : 0;
 266                 tmpcol = tmpcol & disables;
 267                 for(j = 0; j < k; j++) {
 268                         if(cmp_reg_bak[j] == tmpcol) {
 269                                 tmp_stat = tmp_stat | 0x01;
 270                                 goto _l0;
 271                         }
 272                 }
 273 _l0:
 274                 b <<= 1;
 275                 r <<= 1;
 276                 g <<= 1;
 277         }
 278         cmp_status_reg = tmp_stat;
 279         return 0xff;
 280 }
 281
 282 void MB61VH010::do_alucmds_dmyread(uint32 addr)
 283 {
 284         if(!is_400line) {
 285                 addr = addr & 0x3fff;
 286         } else {
 287                 if(addr >= 0x8000) {
 288                         mask_reg = 0xff;
 289                         return;
 290                 }
 291                 addr = addr & 0x7fff;
 292         }
 293         if((command_reg & 0x80) == 0) {
 294                 return;
 295         }
 296         //busy_flag = true;
 297         //cmp_status_reg = 0x00;
 298         if((command_reg & 0x40) != 0) do_compare(addr);
 299         switch(command_reg & 0x07) {
 300                 case 0:
 301                         do_pset(addr);
 302                         break;
 303                 case 1:
 304                         do_blank(addr);
 305                         break;
 306                 case 2:
 307                         do_or(addr);
 308                         break;
 309                 case 3:
 310                         do_and(addr);
 311                         break;
 312                 case 4:
 313                         do_xor(addr);
 314                         break;
 315                 case 5:
 316                         do_not(addr);
 317                         break;
 318                 case 6:
 319                         do_tilepaint(addr);
 320                         break;
 321                 case 7:
 322                         do_compare(addr);
 323                         break;
 324         }
 325         //printf("ALU DMYREAD ADDR=%04x, CMD=%02x CMP STATUS=%02x\n", addr, command_reg, cmp_status_reg);
 326         //if(eventid_busy >= 0) cancel_event(this, eventid_busy) ;
 327         //register_event(this, EVENT_MB61VH010_BUSY_OFF, 1.0 / 16.0, false, &eventid_busy) ;
 328 }
 329
 330 uint8 MB61VH010::do_alucmds(uint32 addr)
 331 {
 332         if(!is_400line) {
 333                 addr = addr & 0x3fff;
 334         } else {
 335                 if(addr >= 0x8000) {
 336                         mask_reg = 0xff;
 337                         return 0xff;
 338                 }
 339                 addr = addr & 0x7fff;
 340         }
 341         //cmp_status_reg = 0x00;
 342         if((command_reg & 0x40) != 0) do_compare(addr);
 343         switch(command_reg & 0x07) {
 344                 case 0:
 345                         return do_pset(addr);
 346                         break;
 347                 case 1:
 348                         return do_blank(addr);
 349                         break;
 350                 case 2:
 351                         return do_or(addr);
 352                         break;
 353                 case 3:
 354                         return do_and(addr);
 355                         break;
 356                 case 4:
 357                         return do_xor(addr);
 358                         break;
 359                 case 5:
 360                         return do_not(addr);
 361                         break;
 362                 case 6:
 363                         return do_tilepaint(addr);
 364                         break;
 365                 case 7:
 366                         return do_compare(addr);
 367                         break;
 368         }
 369         return 0xff;
 370 }
 371
 372 void MB61VH010::do_line(void)
 373 {
 374         uint32 x_begin = line_xbegin.w.l;
 375         uint32 x_end = line_xend.w.l;
 376         uint32 y_begin = line_ybegin.w.l;
 377         uint32 y_end = line_yend.w.l;
 378         int cpx_t = (int)x_begin;
 379         int cpy_t = (int)y_begin;
 380         int ax = (int)x_end - (int)x_begin;
 381         int ay = (int)y_end - (int)y_begin;
 382         int diff = 0;
 383         int count = 0;
 384         int xcount;
 385         int ycount;
 386         uint8 mask_bak = mask_reg;
 387         uint16 tmp8a;
 388         uint8 vmask[8] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
 389         double usec;
 390         bool lastflag = false;
 391
 392
 393         oldaddr = 0xffffffff;
 394         alu_addr = 0xffffffff;
 395         //if ((x_begin >= screen_width) && (x_end >= screen_width)) return;
 396         //if ((y_begin >= screen_height) && (y_end >= screen_height)) return;
 397         line_style = line_pattern;
 398         busy_flag = true;
 399         total_bytes = 0;
 400
 401         mask_reg = 0xff;
 402         if ((line_style.b.h & 0x80) != 0) {
 403                 mask_reg &= ~vmask[cpx_t & 7];
 404         }
 405         tmp8a = ((line_style.b.h & 0x80) >> 7) & 0x01;
 406         line_style.w.l = (line_style.w.l << 1) | tmp8a;
 407
 408         xcount = abs(ax);
 409         ycount = abs(ay);
 410         //printf("LINE: (%d,%d)-(%d,%d)\n", x_begin, y_begin, x_end , y_end);
 411         if(ycount == 0) {
 412                 if(ax > 0) {
 413                         //if((x_end >= screen_width) && (x_begin < screen_width)) x_end = screen_width - 1;
 414                         //printf("LINE: (%d,%d)-(%d,%d)\n", x_begin, y_begin, x_end , y_end);
 415                         for(; cpx_t <= (int)x_end; cpx_t++) {
 416                                 lastflag = put_dot(cpx_t, cpy_t);
 417                         }
 418                 } else {
 419                         for(; cpx_t >= (int)x_end; cpx_t--) {
 420                                 lastflag = put_dot(cpx_t, cpy_t);
 421                         }
 422                 }
 423         } else if(xcount == 0) {
 424                 if(ay > 0) {
 425                         if((y_end >= screen_height) && (y_begin < screen_height)) y_end = screen_height - 1;
 426                         for(; cpy_t <= (int)y_end; cpy_t++) {
 427                                 lastflag = put_dot(cpx_t, cpy_t);
 428                         }
 429                 } else {
 430                         for(; cpy_t  >= (int)y_end; cpy_t--) {
 431                                 lastflag = put_dot(cpx_t, cpy_t);
 432                         }
 433                 }
 434         } else if(xcount >= ycount) {
 435                 diff = (ycount * 32768) / xcount;
 436                 if(ax < 0) {
 437                         if(x_end < 0) xcount = x_begin;
 438                 } else {
 439                         if(x_end >= screen_width) xcount = (int)screen_width - (int)x_begin - 1;
 440                 }
 441                 for(; xcount >= 0; xcount-- ) {
 442                         lastflag = put_dot(cpx_t, cpy_t);
 443                         count += diff;
 444                         if(count > 16384) {
 445                                 if(ay < 0) {
 446                                         if(cpy_t > (int)y_end) cpy_t--;
 447                                 } else {
 448                                         if(cpy_t < (int)y_end) cpy_t++;
 449                                 }
 450                                 count -= 32768;
 451                         }
 452                         if(ax > 0) {
 453                                 cpx_t++;
 454                         } else if(ax < 0) {
 455                                 cpx_t--;
 456                         }
 457                 }
 458         } else if(xcount == ycount) {
 459                 if(ax < 0) {
 460                         xcount = x_begin;
 461                 } else {
 462                         if(x_end >= screen_width) xcount = (int)screen_width - (int)x_begin - 1;
 463                 }
 464                 for(; xcount >= 0; xcount-- ) {
 465                         lastflag = put_dot(cpx_t, cpy_t);
 466                         if(ay > 0) {
 467                                 cpy_t++;
 468                         } else {
 469                                 cpy_t--;
 470                         }
 471                         if(ax > 0) {
 472                                 cpx_t++;
 473                         } else if(ax < 0) {
 474                                 cpx_t--;
 475                         }
 476                 }
 477         } else { // (abs(ax) <= abs(ay)
 478                 diff = (xcount  * 32768) / ycount;
 479                 if(ay < 0) {
 480                         if(y_end < 0) ycount = y_begin;
 481                 } else {
 482                         if(y_end >= screen_height) ycount = screen_height - y_begin - 1;
 483                 }
 484                 for(; ycount >= 0; ycount--) {
 485                         lastflag = put_dot(cpx_t, cpy_t);
 486                         count += diff;
 487                         if(count > 16384) {
 488                                 if(ax < 0) {
 489                                         if(cpx_t > (int)x_end) cpx_t--;
 490                                 } else if(ax > 0) {
 491                                         if(cpx_t < (int)x_end) cpx_t++;
 492                                 }
 493                                 count -= 32768;
 494                         }
 495                         if(ay > 0) {
 496                                 cpy_t++;
 497                         } else {
 498                                 cpy_t--;
 499                         }
 500                 }
 501         }
 502         if(!lastflag) total_bytes++;
 503         if(alu_addr != 0xffffffff) do_alucmds(alu_addr);
 504         if(total_bytes > 16) { // Over 1.0us
 505                 usec = (double)total_bytes / 16.0;
 506                 if(eventid_busy >= 0) cancel_event(this, eventid_busy) ;
 507                 register_event(this, EVENT_MB61VH010_BUSY_OFF, usec, false, &eventid_busy) ;
 508         } else {
 509                 busy_flag = false;
 510         }
 511         //mask_reg = mask_bak;
 512 }
 513
 514 bool MB61VH010::put_dot(int x, int y)
 515 {
 516         uint8 vmask[8] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
 517         uint16 tmp8a;
 518         bool flag = false;
 519
 520         if((x < 0) || (y < 0)) return flag;
 521         //if((x >= (int)screen_width) || (y >= (int)screen_height)) return flag;
 522         if(y >= (int)screen_height) return flag;
 523         //if((command_reg & 0x80) == 0) return flag;
 524
 525         alu_addr = (y * screen_width + x)  >> 3;
 526         alu_addr = alu_addr + line_addr_offset.w.l;
 527         alu_addr = alu_addr & 0x7fff;
 528         if(!is_400line) alu_addr = alu_addr & 0x3fff;
 529
 530         if(oldaddr != alu_addr) {
 531                 if(oldaddr == 0xffffffff) oldaddr = alu_addr;
 532                 //printf("** %d %d %04x %04x %02x\n", x, y, line_addr_offset.w, alu_addr, command_reg );
 533                 do_alucmds(oldaddr);
 534                 mask_reg = 0xff;
 535                 oldaddr = alu_addr;
 536                 flag = true;
 537                 total_bytes++;
 538         }
 539         //printf("** %d %d %04x %04x %02x\n", x, y, line_addr_offset.w, alu_addr, command_reg );
 540
 541         if((line_style.b.h & 0x80) != 0) {
 542                 mask_reg &= ~vmask[x & 7];
 543         }
 544         //tmp8a = (line_style.w.l & 0x8000) >> 15;
 545         tmp8a = ((line_style.b.h & 0x80) >> 7) & 0x01;
 546         line_style.w.l = (line_style.w.l << 1) | tmp8a;
 547         return flag;
 548 }
 549
 550 void MB61VH010::write_data8(uint32 id, uint32 data)
 551 {
 552         //printf("ALU: ADDR=%02x DATA=%02x\n", id, data);
 553         if(id == ALU_CMDREG) {
 554                 command_reg = data;
 555                 return;
 556         }
 557         switch(id) {
 558                 case ALU_LOGICAL_COLOR:
 559                         color_reg = data;
 560                         break;
 561                 case ALU_WRITE_MASKREG:
 562                         mask_reg = data;
 563                         break;
 564                 case ALU_BANK_DISABLE:
 565                         bank_disable_reg = data;
 566                         break;
 567                 case ALU_TILEPAINT_B:
 568                         tile_reg[0] = data;
 569                         break;
 570                 case ALU_TILEPAINT_R:
 571                         tile_reg[1] = data;
 572                         break;
 573                 case ALU_TILEPAINT_G:
 574                         tile_reg[2] = data;
 575                         break;
 576                 case ALU_TILEPAINT_L:
 577                         tile_reg[3] = data;
 578                         break;
 579                 case ALU_OFFSET_REG_HIGH:
 580                         line_addr_offset.b.h &= 0x01;
 581                         line_addr_offset.b.h = line_addr_offset.b.h | ((data << 1) & 0x3e);
 582                         break;
 583                 case ALU_OFFSET_REG_LO:
 584                         line_addr_offset.b.l = data << 1;
 585                         line_addr_offset.b.h &= 0xfe;
 586                         line_addr_offset.b.h = line_addr_offset.b.h | ((data >> 7) & 0x01);
 587                         break;
 588                 case ALU_LINEPATTERN_REG_HIGH:
 589                         line_pattern.b.h = data;
 590                         break;
 591                 case ALU_LINEPATTERN_REG_LO:
 592                         line_pattern.b.l = data;
 593                         break;
 594                 case ALU_LINEPOS_START_X_HIGH:
 595                         line_xbegin.b.h = data & 0x03;
 596                         break;
 597                 case ALU_LINEPOS_START_X_LOW:
 598                         line_xbegin.b.l = data;
 599                         break;
 600                 case ALU_LINEPOS_START_Y_HIGH:
 601                         line_ybegin.b.h = data & 0x01;
 602                         break;
 603                 case ALU_LINEPOS_START_Y_LOW:
 604                         line_ybegin.b.l = data;
 605                         break;
 606                 case ALU_LINEPOS_END_X_HIGH:
 607                         line_xend.b.h = data & 0x03;
 608                         break;
 609                 case ALU_LINEPOS_END_X_LOW:
 610                         line_xend.b.l = data;
 611                         break;
 612                 case ALU_LINEPOS_END_Y_HIGH:
 613                         line_yend.b.h = data & 0x01;
 614                         break;
 615                 case ALU_LINEPOS_END_Y_LOW:
 616                         line_yend.b.l = data;
 617                         do_line();
 618                         break;
 619                 default:
 620                         if((id >= (ALU_CMPDATA_REG + 0)) && (id < (ALU_CMPDATA_REG + 8))) {
 621                                 cmp_color_data[id - ALU_CMPDATA_REG] = data;
 622                         } else  if((id >= ALU_WRITE_PROXY) && (id < (ALU_WRITE_PROXY + 0x18000))) {
 623                                 uint32 raddr = id - ALU_WRITE_PROXY;
 624                                 if(is_400line) {
 625                                         raddr = raddr & 0x7fff;
 626                                 } else {
 627                                         raddr = raddr & 0x3fff;
 628                                 }
 629                                 do_alucmds_dmyread(raddr);
 630                         }
 631                         break;
 632         }
 633 }
 634
 635 uint32 MB61VH010::read_data8(uint32 id)
 636 {
 637         uint32 raddr;
 638         switch(id) {
 639                 case ALU_CMDREG:
 640                         return (uint32)command_reg;
 641                         break;
 642                 case ALU_LOGICAL_COLOR:
 643                         return (uint32)color_reg;
 644                         break;
 645                 case ALU_WRITE_MASKREG:
 646                         return (uint32)mask_reg;
 647                         break;
 648                 case ALU_CMP_STATUS_REG:
 649                         return (uint32)cmp_status_reg;
 650                         break;
 651                 case ALU_BANK_DISABLE:
 652                         return (uint32)bank_disable_reg;
 653                         break;
 654                 default:
 655                         if((id >= ALU_WRITE_PROXY) && (id < (ALU_WRITE_PROXY + 0x18000))) {
 656                                 uint32 dmydata;
 657                                 raddr = id - ALU_WRITE_PROXY;
 658                                 if(is_400line) {
 659                                         raddr = raddr & 0x7fff;
 660                                 } else {
 661                                         raddr = raddr & 0x3fff;
 662                                 }
 663                                 //dmydata = target->read_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS);
 664                                 do_alucmds_dmyread(raddr);
 665                                 raddr = (id - ALU_WRITE_PROXY) & 0xbfff;
 666                                 dmydata = target->read_data8(raddr + DISPLAY_VRAM_DIRECT_ACCESS);
 667                                 return dmydata;
 668                         }
 669                         return 0xffffffff;
 670                         break;
 671         }
 672 }
 673
 674 uint32 MB61VH010::read_signal(int id)
 675 {
 676         uint32 val = 0x00000000;
 677         switch(id) {
 678                 case SIG_ALU_BUSYSTAT:
 679                         if(busy_flag) val = 0xffffffff;
 680                         break;
 681         }
 682         return val;
 683 }
 684
 685 void MB61VH010::write_signal(int id, uint32 data, uint32 mask)
 686 {
 687         bool flag = ((data & mask) != 0);
 688         switch(id) {
 689                 case SIG_ALU_400LINE:
 690                         is_400line = flag;
 691                         break;
 692                 case SIG_ALU_MULTIPAGE:
 693                         multi_page = (data & mask) & 0x07;
 694                         break;
 695                 case SIG_ALU_PLANES:
 696                         planes = (data & mask) & 0x07;
 697                         if(planes >= 4) planes = 4;
 698                         break;
 699                 case SIG_ALU_X_WIDTH:
 700                         screen_width = (data << 3) & 0x3ff;
 701                         break;
 702                 case SIG_ALU_Y_HEIGHT:
 703                         screen_height = data & 0x3ff;
 704                         break;
 705         }
 706 }
 707
 708 void MB61VH010::event_callback(int event_id, int err)
 709 {
 710         switch(event_id) {
 711                 case EVENT_MB61VH010_BUSY_ON:
 712                         busy_flag = true;
 713                         if(eventid_busy >= 0) cancel_event(this, eventid_busy);
 714                         eventid_busy = -1;
 715                         break;
 716                 case EVENT_MB61VH010_BUSY_OFF:
 717                         busy_flag = false;
 718                         eventid_busy = -1;
 719                         break;
 720         }
 721 }
 722
 723 void MB61VH010::initialize(void)
 724 {
 725         busy_flag = false;
 726         is_400line = false;
 727         eventid_busy = -1;
 728         multi_page = 0x00;
 729         planes = 3;
 730         screen_width = 640;
 731         screen_height = 200;
 732 }
 733
 734 void MB61VH010::reset(void)
 735 {
 736         int i;
 737         busy_flag = false;
 738         if(eventid_busy >= 0) cancel_event(this, eventid_busy);
 739         eventid_busy = -1;
 740
 741         command_reg = 0;        // D410 (RW)
 742         color_reg = 0;          // D411 (RW)
 743         mask_reg = 0;           // D412 (RW)
 744         cmp_status_reg = 0;     // D413 (RO)
 745         for(i = 0; i < 8; i++) cmp_color_data[i] = 0x80; // D413-D41A (WO)
 746         bank_disable_reg = 0;   // D41B (RW)
 747         for(i = 0; i < 4; i++) tile_reg[i] = 0;        // D41C-D41F (WO)
 748
 749         line_addr_offset.d = 0; // D420-D421 (WO)
 750         line_pattern.d = 0;     // D422-D423 (WO)
 751         line_xbegin.d = 0;      // D424-D425 (WO)
 752         line_ybegin.d = 0;      // D426-D427 (WO)
 753         line_xend.d = 0;        // D428-D429 (WO)
 754         line_yend.d = 0;        // D42A-D42B (WO)
 755         oldaddr = 0xffffffff;
 756
 757         if(planes >= 4) planes = 4;
 758 }
 759
 760 #define STATE_VERSION 1
 761 void MB61VH010::save_state(FILEIO *state_fio)
 762 {
 763         int i;
 764         state_fio->FputUint32(STATE_VERSION);
 765         state_fio->FputInt32(this_device_id);
 766
 767         { // V1
 768                 state_fio->FputUint8(command_reg);
 769                 state_fio->FputUint8(color_reg);
 770                 state_fio->FputUint8(mask_reg);
 771                 state_fio->FputUint8(cmp_status_reg);
 772                 for(i = 0; i < 8; i++)  state_fio->FputUint8(cmp_color_data[i]);
 773                 state_fio->FputUint8(bank_disable_reg);
 774                 for(i = 0; i < 4; i++)  state_fio->FputUint8(tile_reg[i]);
 775                 state_fio->FputUint8(multi_page);
 776
 777                 state_fio->FputUint32_BE(line_addr_offset.d);
 778                 state_fio->FputUint16_BE(line_pattern.w.l);
 779                 state_fio->FputUint16_BE(line_xbegin.w.l);
 780                 state_fio->FputUint16_BE(line_ybegin.w.l);
 781                 state_fio->FputUint16_BE(line_xend.w.l);
 782                 state_fio->FputUint16_BE(line_yend.w.l);
 783
 784                 state_fio->FputBool(busy_flag);
 785                 state_fio->FputInt32_BE(eventid_busy);
 786
 787                 state_fio->FputUint32_BE(total_bytes);
 788                 state_fio->FputUint32_BE(oldaddr);
 789                 state_fio->FputUint32_BE(alu_addr);
 790
 791                 state_fio->FputUint32_BE(planes);
 792                 state_fio->FputBool(is_400line);
 793                 state_fio->FputUint32_BE(screen_width);
 794                 state_fio->FputUint32_BE(screen_height);
 795
 796                 state_fio->FputUint16_BE(line_style.w.l);
 797         }
 798
 799 }
 800
 801 bool MB61VH010::load_state(FILEIO *state_fio)
 802 {
 803         uint32 version = state_fio->FgetUint32();
 804         int i;
 805
 806         if(this_device_id != state_fio->FgetInt32()) return false;
 807         if(version >= 1) {
 808                 command_reg = state_fio->FgetUint8();
 809                 color_reg = state_fio->FgetUint8();
 810                 mask_reg = state_fio->FgetUint8();
 811                 cmp_status_reg = state_fio->FgetUint8();
 812                 for(i = 0; i < 8; i++)  cmp_color_data[i] = state_fio->FgetUint8();
 813                 bank_disable_reg = state_fio->FgetUint8();
 814                 for(i = 0; i < 4; i++)  tile_reg[i] = state_fio->FgetUint8();
 815                 multi_page = state_fio->FgetUint8();
 816
 817                 line_addr_offset.d = state_fio->FgetUint32_BE();
 818                 line_pattern.d = 0;
 819                 line_xbegin.d = 0;
 820                 line_ybegin.d = 0;
 821                 line_xend.d = 0;
 822                 line_yend.d = 0;
 823
 824                 line_pattern.w.l = state_fio->FgetUint16_BE();
 825                 line_xbegin.w.l = state_fio->FgetUint16_BE();
 826                 line_ybegin.w.l = state_fio->FgetUint16_BE();
 827                 line_xend.w.l = state_fio->FgetUint16_BE();
 828                 line_yend.w.l = state_fio->FgetUint16_BE();
 829
 830                 busy_flag = state_fio->FgetBool();
 831                 eventid_busy = state_fio->FgetInt32_BE();
 832
 833                 total_bytes = state_fio->FgetUint32_BE();
 834                 oldaddr = state_fio->FgetUint32_BE();
 835                 alu_addr = state_fio->FgetUint32_BE();
 836
 837                 planes = state_fio->FgetUint32_BE();
 838                 is_400line = state_fio->FgetBool();
 839                 screen_width = state_fio->FgetUint32_BE();
 840                 screen_height = state_fio->FgetUint32_BE();
 841
 842                 line_style.d = 0;
 843                 line_style.w.l = state_fio->FgetUint16_BE();
 844         }
 845         return true;
 846 }