source/src/vm/fmtowns/fmtowns.cpp

   1 /*
   2         FUJITSU FM-Towns Emulator 'eFMTowns'
   3
   4         Author : Kyuma Ohta <whatisthis.sowhat _at_ gmail.com>
   5         Date   : 2016.12.28 -
   6
   7         [ virtual machine ]
   8         History:
   9                 2016-12-28 Copy from eFMR-50.
  10 */
  11
  12 #include "fmtowns.h"
  13 #include "../../emu.h"
  14 #include "../device.h"
  15 #include "../event.h"
  16
  17 //#include "../hd46505.h"
  18 #include "../i8251.h"
  19 #include "../i8253.h"
  20 #include "../i8259.h"
  21
  22 #include "../i386_np21.h"
  23
  24 #include "../io.h"
  25 #include "../mb8877.h"
  26 #include "../msm58321.h"
  27 #include "../noise.h"
  28 #include "../pcm1bit.h"
  29 #include "../harddisk.h"
  30 #include "../scsi_hdd.h"
  31 #include "./towns_scsi_host.h"
  32 #include "../upd71071.h"
  33
  34 #include "towns_cdrom.h"
  35 #include "towns_crtc.h"
  36 #include "towns_dictionary.h"
  37 #include "towns_dmac.h"
  38 #include "towns_memory.h"
  39 #include "towns_sprite.h"
  40 #include "towns_sysrom.h"
  41 #include "towns_vram.h"
  42
  43 // Electric Volume
  44 //#include "mb87078.h"
  45 //YM-2612 "OPN2"
  46 //#include "../ym2612.h"
  47 //RF5C68 PCM
  48 #include "rf5c68.h"
  49 //AD7820 ADC
  50 #include "ad7820kr.h"
  51 #include "ym2612.h"
  52 // 80387?
  53
  54 #ifdef USE_DEBUGGER
  55 #include "../debugger.h"
  56 #endif
  57
  58 #include "./adpcm.h"
  59 //#include "./cdc.h"
  60 #include "./floppy.h"
  61 #include "./fontroms.h"
  62 #include "./joystick.h"
  63 #include "./keyboard.h"
  64 #include "./msdosrom.h"
  65 #include "./scsi.h"
  66 #include "./serialrom.h"
  67 #include "./timer.h"
  68 #include "./iccard.h"
  69
  70 #include "./towns_planevram.h"
  71
  72 // ----------------------------------------------------------------------------
  73 // initialize
  74 // ----------------------------------------------------------------------------
  75 using FMTOWNS::ADPCM;
  76 //using FMTOWNS::CDC;
  77 using FMTOWNS::DICTIONARY;
  78 using FMTOWNS::FLOPPY;
  79 using FMTOWNS::FONT_ROMS;
  80 using FMTOWNS::JOYSTICK;
  81 using FMTOWNS::KEYBOARD;
  82 using FMTOWNS::MSDOSROM;
  83 using FMTOWNS::SCSI;
  84 using FMTOWNS::SERIAL_ROM;
  85 using FMTOWNS::SYSROM;
  86 using FMTOWNS::TIMER;
  87 using FMTOWNS::TOWNS_ICCARD;
  88
  89 using FMTOWNS::TOWNS_CDROM;
  90 using FMTOWNS::TOWNS_CRTC;
  91 using FMTOWNS::TOWNS_DMAC;
  92 using FMTOWNS::TOWNS_MEMORY;
  93 using FMTOWNS::TOWNS_SCSI_HOST;
  94 using FMTOWNS::TOWNS_SPRITE;
  95 using FMTOWNS::TOWNS_VRAM;
  96 using FMTOWNS::PLANEVRAM;
  97
  98
  99 VM::VM(EMU_TEMPLATE* parent_emu) : VM_TEMPLATE(parent_emu)
 100 {
 101 /*
 102         Machine ID & CPU ID
 103
 104         FMR-50FD/HD/LT  0xF8
 105         FMR-50FX/HX     0xE0
 106         FMR-50SFX/SHX   0xE8
 107         FMR-50LT        0xF8
 108         FMR-50NBX       0x28
 109         FMR-50NB        0x60
 110         FMR-50NE/T      0x08
 111         FMR-CARD        0x70
 112
 113         80286           0x00
 114         80386           0x01
 115         80386SX         0x03
 116         80486           0x02
 117 */
 118
 119         // create devices
 120         first_device = last_device = NULL;
 121         dummy = new DEVICE(this, emu);  // must be 1st device
 122         event = new EVENT(this, emu);   // must be 2nd device
 123 #if defined(_USE_QT)
 124         dummy->set_device_name(_T("1st Dummy"));
 125         event->set_device_name(_T("EVENT"));
 126 #endif
 127
 128         cpu = new I386(this, emu);
 129 #if defined(_USE_QT)
 130   #if defined(HAS_I386)
 131         cpu->set_device_name(_T("CPU(i386)"));
 132   #elif defined(HAS_I486)
 133         cpu->set_device_name(_T("CPU(i486)"));
 134   #elif defined(HAS_PENTIUM)
 135         cpu->set_device_name(_T("CPU(Pentium)"));
 136   #endif
 137 #endif
 138
 139         io = new IO(this, emu);
 140
 141         crtc = new TOWNS_CRTC(this, emu);
 142         cdrom = new TOWNS_CDROM(this, emu);
 143
 144         memory = new TOWNS_MEMORY(this, emu);
 145         vram = new TOWNS_VRAM(this, emu);
 146         sprite = new TOWNS_SPRITE(this, emu);
 147         sysrom = new SYSROM(this, emu);
 148         msdosrom = new MSDOSROM(this, emu);
 149         fontrom = new FONT_ROMS(this, emu);
 150         dictionary = new DICTIONARY(this, emu);
 151 #if defined(HAS_20PIX_FONTS)
 152         fontrom_20pix = new FONT_ROM_20PIX(this, emu);
 153 #endif
 154         serialrom = new SERIAL_ROM(this, emu);
 155
 156         adpcm = new ADPCM(this, emu);
 157 //      mixer = new MIXER(this, emu); // Pseudo mixer.
 158
 159         planevram = new PLANEVRAM(this, emu);
 160
 161         adc = new AD7820KR(this, emu);
 162         rf5c68 = new RF5C68(this, emu);
 163 //      e_volume[0] = new MB87878(this, emu);
 164 //      e_volume[1] = new MB87878(this, emu);
 165
 166         sio = new I8251(this, emu);
 167         pit0 = new I8253(this, emu);
 168         pit1 = new I8253(this, emu);
 169         pic = new I8259(this, emu);
 170         fdc = new MB8877(this, emu);
 171         rtc = new MSM58321(this, emu);
 172         beep = new PCM1BIT(this, emu);
 173         opn2 = new YM2612(this, emu);
 174
 175         seek_sound = new NOISE(this, emu);
 176         head_up_sound = new NOISE(this, emu);
 177         head_down_sound = new NOISE(this, emu);
 178
 179 //      scsi_host = new TOWNS_SCSI_HOST(this, emu);
 180         scsi_host = new SCSI_HOST(this, emu);
 181
 182         for(int i = 0; i < 7; i++) {
 183                 scsi_hdd[i] = NULL;
 184         }
 185 #if defined(USE_HARD_DISK)
 186         for(int i = 0; i < USE_HARD_DISK; i++) {
 187                 scsi_hdd[i] = new SCSI_HDD(this, emu);
 188                 scsi_hdd[i]->set_device_name(_T("SCSI Hard Disk Drive #%d"), i + 1);
 189                 scsi_hdd[i]->scsi_id = i ;
 190                 scsi_hdd[i]->set_disk_handler(0, new HARDDISK(emu));
 191                 scsi_hdd[i]->set_context_interface(scsi_host);
 192                 my_sprintf_s(scsi_hdd[i]->vendor_id, 9, "FUJITSU");
 193                 my_sprintf_s(scsi_hdd[i]->product_id, 17, "SCSI-HDD");
 194                 scsi_host->set_context_target(scsi_hdd[i]);
 195         }
 196 #endif
 197         dma = new TOWNS_DMAC(this, emu);
 198         extra_dma = new TOWNS_DMAC(this, emu);
 199
 200         floppy = new FLOPPY(this, emu);
 201         keyboard = new KEYBOARD(this, emu);
 202         joystick = new JOYSTICK(this, emu);
 203         scsi = new SCSI(this, emu);
 204         timer = new TIMER(this, emu);
 205
 206         iccard1 = new TOWNS_ICCARD(this, emu);
 207 #if 0
 208         iccard2 = new TOWNS_ICCARD(this, emu);
 209 #else
 210         iccard2 = NULL;
 211 #endif
 212
 213         uint16_t machine_id = 0x0100; // FM-Towns1
 214         uint16_t cpu_id = 0x0001;     // i386DX
 215         uint32_t cpu_clock = 16000 * 1000; // 16MHz
 216 #if defined(_FMTOWNS1_2ND_GEN)
 217         machine_id = 0x0200;   // 1F/2F/1H/2H
 218 #elif defined(_FMTOWNS_UX_VARIANTS)
 219         machine_id = 0x0300;   // UX10/20/40
 220         cpu_id = 0x0003;       // i386SX
 221 #elif defined(_FMTOWNS1_3RD_GEN)
 222         machine_id = 0x0400;  // 10F/20F.40H/80H
 223 #elif defined(_FMTOWNS2_CX_VARIANTS)
 224         machine_id = 0x0500;  // CX10/20/30/40
 225 #elif defined(_FMTOWNS_UG_VARIANTS)
 226         machine_id = 0x0600;  // UG10/20/40/80
 227         cpu_id = 0x0003;      // i386SX
 228         cpu_clock = 20000 * 1000; // 20MHz
 229 #elif defined(_FMTOWNS_HR_VARIANTS)
 230         machine_id = 0x0700;
 231         cpu_id = 0x0002;      // i486SX
 232         cpu_clock = 20000 * 1000; // 20MHz
 233 #elif defined(_FMTOWNS_HG_VARIANTS)
 234         machine_id = 0x0800;
 235         cpu_clock = 20000 * 1000; // 20MHz
 236 #elif defined(_FMTOWNS_SG_VARIANTS)
 237         machine_id = 0x0800; // OK?
 238 #elif defined(_FMTOWNS_SR_VARIANTS)
 239         machine_id = 0x0700; // OK?
 240         cpu_id = 0x0002;      // i486SX
 241         cpu_clock = 20000 * 1000; // 20MHz
 242 #elif defined(_FMTOWNS_MA_VARIANTS)
 243         machine_id = 0x0b00; // OK?
 244         cpu_id = 0x0002;      // i486SX
 245         cpu_clock = 33000 * 1000; // 33MHz
 246 #elif defined(_FMTOWNS_ME_VARIANTS)
 247         machine_id = 0x0d00; // OK?
 248         cpu_id = 0x0002;      // i486SX
 249         cpu_clock = 25000 * 1000; // 25MHz
 250 #elif defined(_FMTOWNS_MF_VARIANTS)
 251         machine_id = 0x0f00; // OK?
 252         cpu_id = 0x0002;      // i486SX
 253         cpu_clock = 33000 * 1000; // 33MHz
 254 #elif defined(_FMTOWNS_MX_VARIANTS)
 255         machine_id = 0x0c00; // OK?
 256         cpu_id = 0x0002;      // i486DX (With FPU?)
 257         cpu_clock = 66000 * 1000; // 66MHz
 258 #elif defined(_FMTOWNS_MX_VARIANTS)
 259         machine_id = 0x0c00; // OK?
 260         cpu_id = 0x0002;      // i486DX (With FPU?)
 261         cpu_clock = 66000 * 1000; // 66MHz
 262 #else
 263         // ToDo: Pentium Model (After HB).
 264
 265 #endif
 266         event->set_frames_per_sec(FRAMES_PER_SEC);
 267         event->set_lines_per_frame(LINES_PER_FRAME);
 268
 269         set_machine_type(machine_id, cpu_id);
 270         // set contexts
 271         event->set_context_cpu(cpu, cpu_clock);
 272
 273         adc_in_ch = -1;
 274         line_in_ch = -1;
 275         modem_in_ch = -1;
 276         mic_in_ch = -1;
 277
 278         // Use pseudo mixer instead of event.Due to using ADC.
 279 #if 0
 280         line_mix_ch = -1;
 281         modem_mix_ch = -1;
 282         mic_mix_ch = -1;
 283         //line_mix_ch = mixer->set_context_sound(line_in);
 284         //modem_mix_ch = mixer->set_context_sound(modem_in);
 285         //mic_mix_ch = mixer->set_context_sound(mic_in);
 286         beep_mix_ch = mixer->set_context_sound(beep);
 287         pcm_mix_ch  = mixer->set_context_sound(rf5c68);
 288         opn2_mix_ch = mixer->set_context_sound(opn2);
 289         cdc_mix_ch = mixer->set_context_sound(cdrom);
 290         mixer->set_interpolate_filter_freq(pcm_mix_ch, 4000); // channel, freq; disable if freq <= 0.
 291         event->set_context_sound(mixer);
 292 #else
 293         // Temporally not use mixer.
 294         event->set_context_sound(beep);
 295         event->set_context_sound(opn2);
 296         event->set_context_sound(rf5c68);
 297         event->set_context_sound(cdrom);
 298 #endif
 299         fdc->set_context_noise_seek(seek_sound);
 300         fdc->set_context_noise_head_down(head_down_sound);
 301         fdc->set_context_noise_head_up(head_up_sound);
 302         event->set_context_sound(seek_sound);
 303         event->set_context_sound(head_down_sound);
 304         event->set_context_sound(head_up_sound);
 305
 306 #ifdef USE_DEBUGGER
 307         pit0->set_context_debugger(new DEBUGGER(this, emu));
 308         pit1->set_context_debugger(new DEBUGGER(this, emu));
 309 #endif
 310         pit0->set_context_ch0(timer, SIG_TIMER_CH0, 1);
 311         pit0->set_context_ch1(timer, SIG_TIMER_CH1, 1);
 312         pit0->set_context_ch2(beep,  SIG_PCM1BIT_SIGNAL, 1);
 313         pit0->set_constant_clock(0, 307200);
 314         pit0->set_constant_clock(1, 307200);
 315         pit0->set_constant_clock(2, 307200);
 316         pit1->set_constant_clock(0, 1229900);
 317         pit1->set_constant_clock(1, 1229900);
 318         pit1->set_constant_clock(2, 1229900);
 319 //      pic->set_context_cpu(cpu);
 320         pic->set_context_cpu(memory);
 321         fdc->set_context_irq(floppy, SIG_FLOPPY_IRQ, 1);
 322         rtc->set_context_data(timer, SIG_TIMER_RTC, 0x0f, 0);
 323         rtc->set_context_busy(timer, SIG_TIMER_RTC_BUSY, 0x80);
 324         scsi_host->set_context_irq(scsi, SIG_SCSI_IRQ, 1);
 325         scsi_host->set_context_drq(scsi, SIG_SCSI_DRQ, 1);
 326         dma->set_context_memory(memory);
 327         dma->set_context_ch0(fdc);
 328         dma->set_context_ch1(scsi_host);
 329         //dma->set_context_ch2(printer);
 330         dma->set_context_ch3(cdrom);
 331         dma->set_context_tc(cdrom, SIG_TOWNS_CDROM_DMAINT, 1 << 3);
 332         dma->set_context_ube1(scsi_host, SIG_SCSI_16BIT_BUS, 0x02);
 333
 334         dma->set_context_child_dma(extra_dma);
 335
 336         floppy->set_context_fdc(fdc);
 337
 338         sprite->set_context_vram(vram);
 339         sprite->set_context_font(fontrom);
 340         sprite->set_context_crtc(crtc);
 341 #ifdef USE_DEBUGGER
 342         sprite->set_context_debugger(new DEBUGGER(this, emu));
 343 #endif
 344
 345         vram->set_context_sprite(sprite);
 346         vram->set_context_crtc(crtc);
 347
 348         planevram->set_context_vram(vram);
 349         planevram->set_context_sprite(sprite);
 350         planevram->set_context_crtc(crtc);
 351
 352         crtc->set_context_sprite(sprite);
 353         crtc->set_context_vram(vram);
 354         crtc->set_context_font(fontrom);
 355
 356         //e_volume[0]->set_context_ch0(line_in, MB87878_VOLUME_LEFT);
 357         //e_volume[0]->set_context_ch1(line_in, MB87878_VOLUME_RIGHT);
 358         //e_volume[0]->set_context_ch2(NULL, MB87878_VOLUME_LEFT);
 359         //e_volume[0]->set_context_ch3(NULL, MB87878_VOLUME_RIGHT);
 360 //      e_volume[1]->set_context_ch0(cdrom, MB87878_VOLUME_LEFT);
 361 //      e_volume[1]->set_context_ch1(cdrom, MB87878_VOLUME_RIGHT);
 362         //e_volume[1]->set_context_ch2(mic, MB87878_VOLUME_LEFT | MB87878_VOLUME_RIGHT);
 363         //e_volume[1]->set_context_ch3(modem, MB87878_VOLUME_LEFT | MB87878_VOLUME_RIGHT);
 364
 365         memory->set_context_cpu(cpu);
 366         memory->set_context_dmac(dma);
 367         memory->set_context_vram(vram);
 368         memory->set_context_planevram(planevram);
 369         memory->set_context_crtc(crtc);
 370         memory->set_context_system_rom(sysrom);
 371         memory->set_context_msdos(msdosrom);
 372         memory->set_context_dictionary(dictionary);
 373         memory->set_context_font_rom(fontrom);
 374         memory->set_context_beep(beep);
 375         memory->set_context_serial_rom(serialrom);
 376         memory->set_context_sprite(sprite);
 377         memory->set_context_pcm(rf5c68);
 378         memory->set_context_iccard(iccard1, 0);
 379         memory->set_context_iccard(iccard2, 1);
 380
 381         adpcm->set_context_opn2(opn2);
 382         adpcm->set_context_rf5c68(rf5c68);
 383         adpcm->set_context_adc(adc);
 384
 385         rf5c68->set_context_interrupt_boundary(adpcm, SIG_ADPCM_WRITE_INTERRUPT, 0xffffffff);
 386 #ifdef USE_DEBUGGER
 387         rf5c68->set_context_debugger(new DEBUGGER(this, emu));
 388 #endif
 389         opn2->set_context_irq(adpcm, SIG_ADPCM_OPX_INTR, 0xffffffff);
 390
 391         adc->set_sample_rate(19200);
 392         adc->set_sound_bank(-1);
 393         adc->set_context_interrupt(adpcm, SIG_ADPCM_ADC_INTR, 0xffffffff);
 394
 395         scsi->set_context_dma(dma);
 396         scsi->set_context_host(scsi_host);
 397         scsi->set_context_pic(pic);
 398         timer->set_context_pcm(beep);
 399         timer->set_context_rtc(rtc);
 400         timer->set_context_halt_line(cpu, SIG_CPU_HALTREQ, 0xffffffff);
 401
 402         // cpu bus
 403         cpu->set_context_mem(memory);
 404         cpu->set_context_io(io);
 405         cpu->set_context_intr(pic);
 406         cpu->set_context_dma(dma);
 407         cpu->set_context_bios(NULL);
 408         cpu->set_context_extreset(memory, SIG_FMTOWNS_NOTIFY_RESET, 0xffffffff);
 409 #ifdef USE_DEBUGGER
 410         cpu->set_context_debugger(new DEBUGGER(this, emu));
 411 #endif
 412         // Interrupts
 413         // IRQ0  : TIMER
 414         // IRQ1  : KEYBOARD
 415         // IRQ2  : USART (ToDo)
 416         // IRQ3  : EXTRA USART (ToDo)
 417         // IRQ4  : EXTRA I/O (Maybe not implement)
 418         // IRQ5  : EXTRA I/O (Maybe not implement)
 419         // IRQ6  : FDC
 420         // IRQ7  : Deisy chain (to IRQ8 - 15)
 421         timer->set_context_intr_line(pic, SIG_I8259_CHIP0 | SIG_I8259_IR0, 0xffffffff);
 422         keyboard->set_context_intr_line(pic, SIG_I8259_CHIP0 | SIG_I8259_IR1, 0xffffffff);
 423         floppy->set_context_intr_line(pic, SIG_I8259_CHIP0 | SIG_I8259_IR6, 0xffffffff);
 424
 425         // IRQ8  : SCSI (-> scsi.cpp)
 426         // IRQ9  : CDC/CDROM
 427         // IRQ10 : EXTRA I/O (Maybe not implement)
 428         // IRQ11 : VSYNC
 429         // IRQ12 : PRINTER (ToDo)
 430         // IRQ13 : ADPCM AND OPN2 (Route to adpcm.cpp)
 431         // IRQ14 : EXTRA I/O (Maybe not implement)
 432         // IRQ15 : RESERVED.
 433         cdrom->set_context_mpuint_line(pic, SIG_I8259_CHIP1 | SIG_I8259_IR1, 0xffffffff);
 434         crtc->set_context_vsync(pic, SIG_I8259_CHIP1 | SIG_I8259_IR3, 0xffffffff);
 435         adpcm->set_context_intr_line(pic, SIG_I8259_CHIP1 | SIG_I8259_IR5, 0xffffffff);
 436
 437         // DMA0  : FDC/DRQ
 438         // DMA1  : SCSI (-> scsi.cpp)
 439         // DMA2  : PRINTER (ToDo)
 440         // DMA3  : CDC/CDROM
 441         // EXTRA DMA0 : EXTRA SLOT (Maybe not implement)
 442         // EXTRA DMA1 : Reserved
 443         // EXTRA DMA2 : Reserved
 444         // EXTRA DMA3 : Reserved
 445         fdc->set_context_drq(dma, SIG_UPD71071_CH0, 1);
 446         cdrom->set_context_drq_line(dma, SIG_UPD71071_CH3, 0xff);
 447
 448         // NMI0 : KEYBOARD (RAS)
 449         // NMI1 : Extra SLOT (Maybe not implement)
 450         keyboard->set_context_nmi_line(memory, SIG_CPU_NMI, 0xffffffff);
 451
 452         // For Debugging, will remove 20200822 K.O
 453         cdrom->set_context_cpu(cpu);
 454
 455         // i/o bus
 456         io->set_iowait_range_rw(0x0000, 0xffff, 6); // ToDo: May variable wait.
 457
 458         io->set_iomap_alias_rw (0x0000, pic, I8259_ADDR_CHIP0 | 0);
 459         io->set_iomap_alias_rw (0x0002, pic, I8259_ADDR_CHIP0 | 1);
 460         io->set_iomap_alias_rw (0x0010, pic, I8259_ADDR_CHIP1 | 0);
 461         io->set_iomap_alias_rw (0x0012, pic, I8259_ADDR_CHIP1 | 1);
 462
 463         io->set_iomap_range_rw (0x0020, 0x0025, memory);
 464         io->set_iomap_range_rw (0x0026, 0x0027, timer);  // Freerun counter
 465         io->set_iomap_single_rw(0x0028, memory);
 466
 467         io->set_iomap_range_r  (0x0030, 0x0031, memory);        // cpu id / machine id
 468         io->set_iomap_single_rw(0x0032, memory);        // serial rom (routed from memory)
 469         io->set_iomap_single_r (0x0034, scsi);  // ENABLE/ UNABLE to WORD DMA for SCSI
 470
 471         io->set_iomap_alias_rw(0x0040, pit0, 0);
 472         io->set_iomap_alias_rw(0x0042, pit0, 1);
 473         io->set_iomap_alias_rw(0x0044, pit0, 2);
 474         io->set_iomap_alias_rw(0x0046, pit0, 3);
 475         io->set_iomap_alias_rw(0x0050, pit1, 0);
 476         io->set_iomap_alias_rw(0x0052, pit1, 1);
 477         io->set_iomap_alias_rw(0x0054, pit1, 2);
 478         io->set_iomap_alias_rw(0x0056, pit1, 3);
 479
 480         io->set_iomap_single_rw(0x0060, timer); // Beep and interrupts register
 481         io->set_iomap_single_rw(0x0068, timer); // Interval timer register2 (after Towns 10F).
 482         io->set_iomap_single_rw(0x006a, timer); // Interval timer register2 (after Towns 10F).
 483         io->set_iomap_single_rw(0x006b, timer); // Interval timer register2 (after Towns 10F).
 484         io->set_iomap_single_rw(0x006c, timer); // 1uS wait register (after Towns 10F).
 485
 486         io->set_iomap_single_rw(0x0070, timer); // RTC DATA
 487         io->set_iomap_single_w (0x0080, timer); // RTC COMMAND
 488
 489         io->set_iomap_range_rw (0x00a0, 0x00af, dma);
 490         io->set_iomap_range_rw (0x00b0, 0x00bf, extra_dma);
 491
 492         io->set_iomap_alias_rw (0x0200, fdc, 0);  // STATUS/COMMAND
 493         io->set_iomap_alias_rw (0x0202, fdc, 1);  // TRACK
 494         io->set_iomap_alias_rw (0x0204, fdc, 2);  // SECTOR
 495         io->set_iomap_alias_rw (0x0206, fdc, 3);  // DATA
 496         io->set_iomap_single_rw(0x0208, floppy);  // DRIVE STATUS / DRIVE CONTROL
 497         io->set_iomap_single_rw(0x020c, floppy);  // DRIVE SELECT
 498         io->set_iomap_single_rw(0x020e, floppy);  // Towns drive SW
 499
 500         io->set_iomap_range_rw (0x0400, 0x0404, memory); // System Status
 501         io->set_iomap_range_rw (0x0406, 0x403f, memory); // Reserved
 502
 503         io->set_iomap_range_rw(0x0440, 0x0443, crtc); // CRTC
 504         io->set_iomap_range_rw(0x0448, 0x044f, crtc); // VIDEO OUT (CRTC)
 505
 506         io->set_iomap_range_rw(0x0450, 0x0452, sprite); // SPRITE
 507
 508         io->set_iomap_single_rw(0x0458, vram);         // VRAM ACCESS CONTROLLER (ADDRESS)
 509         io->set_iomap_range_rw (0x045a, 0x045f, vram); // VRAM ACCESS CONTROLLER (DATA)
 510
 511         io->set_iomap_single_rw(0x0480, memory); //  MEMORY REGISTER
 512         io->set_iomap_single_rw(0x0484, dictionary); // Dictionary
 513
 514         io->set_iomap_alias_r(0x48a, iccard1, 0); //
 515         //io->set_iomap_alias_rw(0x490, memory_card); // After Towns2
 516         //io->set_iomap_alias_rw(0x491, memory_card); // After Towns2
 517
 518         io->set_iomap_range_rw(0x04c0, 0x04cf, cdrom); // CDROM
 519         // PAD, Sound
 520 #if 1
 521         io->set_iomap_single_r(0x04d0, joystick); // Pad1
 522         io->set_iomap_single_r(0x04d2, joystick); // Pad 2
 523         io->set_iomap_single_w(0x04d6, joystick); // Pad out
 524 #endif
 525         io->set_iomap_single_rw(0x04d5, adpcm); // mute
 526         // OPN2(YM2612)
 527         io->set_iomap_alias_rw(0x04d8, opn2, 0); // STATUS(R)/Addrreg 0(W)
 528         io->set_iomap_alias_w (0x04da, opn2, 1);  // Datareg 0(W)
 529         io->set_iomap_alias_w (0x04dc, opn2, 2);  // Addrreg 1(W)
 530         io->set_iomap_alias_w (0x04de, opn2, 3);  // Datareg 1(W)
 531         // Electrical volume
 532 //      io->set_iomap_alias_rw(0x04e0, e_volume[0], 0);
 533 //      io->set_iomap_alias_rw(0x04e1, e_volume[0], 1);
 534 //      io->set_iomap_alias_rw(0x04e2, e_volume[1], 0);
 535 //      io->set_iomap_alias_rw(0x04e3, e_volume[1], 1);
 536
 537         // ADPCM
 538         io->set_iomap_range_rw(0x04e7, 0x04ef, adpcm); // A/D SAMPLING DATA REG
 539         io->set_iomap_range_rw(0x04f0, 0x04f8, rf5c68); // A/D SAMPLING DATA REG
 540
 541         io->set_iomap_single_rw(0x05c0, memory); // NMI MASK
 542         io->set_iomap_single_r (0x05c2, memory);  // NMI STATUS
 543         io->set_iomap_single_r (0x05c8, sprite); // TVRAM EMULATION
 544         io->set_iomap_single_w (0x05ca, crtc); // VSYNC INTERRUPT
 545         if(machine_id < 0x0200) {
 546                 io->set_iomap_single_rw(0x05e0, memory); //  MEMORY WAIT REGISTER ffrom AB.COM
 547         } else {
 548                 io->set_iomap_single_rw(0x05e2, memory); // MEMORY WAIT REGISTER ffrom AB.COM
 549         }
 550         io->set_iomap_single_rw(0x05e8, memory); // RAM capacity register.(later Towns1H/2H/1F/2F).
 551         io->set_iomap_single_rw(0x05ec, memory); // RAM Wait register , ofcially after Towns2, but exists after Towns1H.
 552         io->set_iomap_single_r (0x05ed, memory); // RAM Wait register , ofcially after Towns2, but exists after Towns1H.
 553
 554         io->set_iomap_single_rw(0x0600, keyboard);
 555         io->set_iomap_single_rw(0x0602, keyboard);
 556         io->set_iomap_single_rw(0x0604, keyboard);
 557
 558         //io->set_iomap_single_rw(0x0800, printer);
 559         //io->set_iomap_single_rw(0x0802, printer);
 560         //io->set_iomap_single_rw(0x0804, printer);
 561
 562         io->set_iomap_alias_rw (0x0a00, sio, 0);
 563         io->set_iomap_alias_rw (0x0a02, sio, 1);
 564 //      io->set_iomap_single_r (0x0a04, serial);
 565 //      io->set_iomap_single_r (0x0a06, serial);
 566 //      io->set_iomap_single_w (0x0a08, serial);
 567 //      io->set_iomap_single_rw(0x0a0a, modem);
 568
 569         io->set_iomap_single_rw(0x0c30, scsi);
 570         io->set_iomap_single_rw(0x0c32, scsi);
 571
 572         io->set_iomap_range_rw (0x3000, 0x3fff, dictionary); // CMOS
 573
 574         io->set_iomap_range_rw (0xfd90, 0xfda2, crtc);  // Palette and CRTC
 575         io->set_iomap_single_rw(0xfda4, memory);        // memory
 576
 577         io->set_iomap_range_rw (0xff80, 0xff83, planevram);     // MMIO
 578         io->set_iomap_single_r (0xff84, planevram);     // MMIO
 579         io->set_iomap_single_rw(0xff86, planevram);     // MMIO
 580         io->set_iomap_single_rw(0xff88, memory);        // MMIO
 581         io->set_iomap_range_rw (0xff94, 0xff99, memory);        // MMIO
 582         io->set_iomap_range_r  (0xff9c, 0xff9d, memory);        // MMIO
 583         io->set_iomap_single_rw(0xff9e, memory);        // MMIO
 584         io->set_iomap_single_rw(0xffa0, planevram);     // MMIO
 585
 586 //      io->set_iomap_range_w (0xff94, 0xff95, fontrom);
 587 //      io->set_iomap_range_r (0xff96, 0xff97, fontrom);
 588
 589         // Vram allocation may be before initialize().
 590         // initialize all devices
 591 #if defined(__GIT_REPO_VERSION)
 592         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 593 #endif
 594         // ToDo : Use config framework
 595         int exram_size = config.current_ram_size;
 596         if(exram_size < 1) {
 597                 if(machine_id < 0x0200) { // Model1 - 2H
 598                         exram_size = 6;
 599                 } else if(machine_id == 0x0500) { // CX
 600                         exram_size = 15;
 601                 } else if(machine_id < 0x0700) {  // 10F,20H
 602                         exram_size = 8;
 603                 } else if(machine_id == 0x0800) { // HG
 604                         exram_size = 15;
 605                 } else {
 606                         exram_size = 31;
 607                 }
 608         }
 609         if(exram_size < MIN_RAM_SIZE) {
 610                 exram_size = MIN_RAM_SIZE;
 611         }
 612
 613         memory->set_extra_ram_size(exram_size);
 614
 615 #if defined(WITH_I386SX)
 616         cpu->device_model = INTEL_80386;
 617 #elif defined(WITH_I486SX)
 618         cpu->device_model = INTEL_I486SX;
 619 #elif defined(WITH_I486DX)
 620         cpu->device_model = INTEL_I486DX;
 621 #elif defined(WITH_PENTIUM)
 622         cpu->device_model = INTEL_PENTIUM;
 623 #else
 624         // I386
 625         cpu->device_model = INTEL_80386;
 626 #endif
 627
 628         for(DEVICE* device = first_device; device; device = device->next_device) {
 629                 device->initialize();
 630         }
 631 //      cpu->set_address_mask(0xffffffff);
 632 }
 633
 634 VM::~VM()
 635 {
 636         // delete all devices
 637         for(DEVICE* device = first_device; device;) {
 638                 DEVICE *next_device = device->next_device;
 639 //              printf("DEVID=%d\n", device->this_device_id);
 640                 device->release();
 641                 delete device;
 642                 device = next_device;
 643         }
 644 }
 645
 646 DEVICE* VM::get_device(int id)
 647 {
 648         for(DEVICE* device = first_device; device; device = device->next_device) {
 649                 if(device->this_device_id == id) {
 650                         return device;
 651                 }
 652         }
 653         return NULL;
 654 }
 655
 656 void VM::set_machine_type(uint16_t machine_id, uint16_t cpu_id)
 657 {
 658         if(memory != NULL) {
 659                 memory->set_cpu_id(cpu_id);
 660                 memory->set_machine_id(machine_id);
 661         }
 662         if(crtc != NULL) {
 663                 crtc->set_cpu_id(cpu_id);
 664                 crtc->set_machine_id(machine_id);
 665         }
 666         if(timer != NULL) {
 667                 timer->set_cpu_id(cpu_id);
 668                 timer->set_machine_id(machine_id);
 669         }
 670         if(cdrom != NULL) {
 671                 cdrom->set_cpu_id(cpu_id);
 672                 cdrom->set_machine_id(machine_id);
 673         }
 674         if(scsi != NULL) {
 675                 scsi->set_cpu_id(cpu_id);
 676                 scsi->set_machine_id(machine_id);
 677         }
 678         if(serialrom != NULL) {
 679                 serialrom->set_cpu_id(cpu_id);
 680                 serialrom->set_machine_id(machine_id);
 681         }
 682 #if defined(HAS_20PIX_FONTS)
 683         if(fontrom_20pix != NULL) {
 684                 fontrom_20pix->set_cpu_id(cpu_id);
 685                 fontrom_20pix->set_machine_id(machine_id);
 686         }
 687 #endif
 688
 689 }
 690
 691
 692 // ----------------------------------------------------------------------------
 693 // drive virtual machine
 694 // ----------------------------------------------------------------------------
 695
 696 void VM::reset()
 697 {
 698         // reset all devices
 699         for(DEVICE* device = first_device; device; device = device->next_device) {
 700                 device->reset();
 701         }
 702 //      cpu->set_address_mask(0xffffffff);
 703 }
 704
 705 void VM::run()
 706 {
 707         event->drive();
 708 }
 709
 710 // ----------------------------------------------------------------------------
 711 // debugger
 712 // ----------------------------------------------------------------------------
 713
 714 #ifdef USE_DEBUGGER
 715 DEVICE *VM::get_cpu(int index)
 716 {
 717         if(index == 0) {
 718                 return cpu;
 719         }
 720         return NULL;
 721 }
 722 #endif
 723
 724 // ----------------------------------------------------------------------------
 725 // draw screen
 726 // ----------------------------------------------------------------------------
 727
 728 void VM::draw_screen()
 729 {
 730         crtc->draw_screen();
 731 }
 732
 733 uint32_t VM::is_floppy_disk_accessed()
 734 {
 735         return fdc->read_signal(0);
 736 }
 737
 738 // ----------------------------------------------------------------------------
 739 // soud manager
 740 // ----------------------------------------------------------------------------
 741
 742 void VM::initialize_sound(int rate, int samples)
 743 {
 744         emu->lock_vm();
 745         // init sound manager
 746         event->initialize_sound(rate, samples);
 747
 748         // init sound gen
 749         beep->initialize_sound(rate, 8000);
 750
 751         // init OPN2
 752         // MASTER CLOCK MAYBE 600KHz * 12 = 7200KHz .
 753         // From FM-Towns Technical Databook (Rev.2), Page 201
 754         opn2->initialize_sound(rate, (int)(600.0e3 * 12.0) , samples, 0.0, 0.0);
 755         //opn2->initialize_sound(rate, (int)(8000.0e3) , samples, 0.0, 0.0);
 756         //opn2->initialize_sound(rate, (int)(600.0e3 * 6.0) , samples, 0.0, 0.0);
 757
 758         // init PCM
 759         rf5c68->initialize_sound(rate, samples);
 760
 761         // add_sound_in_source() must add after per initialize_sound().
 762         adc_in_ch = event->add_sound_in_source(rate, samples, 2);
 763         adc->set_sample_rate(19200);
 764         adc->set_sound_bank(adc_in_ch);
 765 #if 0
 766         mixer->set_context_out_line(adc_in_ch);
 767         mixer->set_context_sample_out(adc_in_ch, rate, samples); // Must be 2ch.
 768         // ToDo: Check recording sample rate & channels.
 769         mic_in_ch = event->add_sound_in_source(rate, samples, 2);
 770         mixer->set_context_mic_in(mic_in_ch, rate, samples);
 771
 772         line_in_ch = event->add_sound_in_source(rate, samples, 2);
 773         mixer->set_context_line_in(line_in_ch, rate, samples);
 774 #endif
 775         emu->unlock_vm();
 776 }
 777
 778 uint16_t* VM::create_sound(int* extra_frames)
 779 {
 780         return event->create_sound(extra_frames);
 781 }
 782
 783 int VM::get_sound_buffer_ptr()
 784 {
 785         return event->get_sound_buffer_ptr();
 786 }
 787
 788 void VM::clear_sound_in()
 789 {
 790         event->clear_sound_in_source(adc_in_ch);
 791         event->clear_sound_in_source(mic_in_ch);
 792         event->clear_sound_in_source(line_in_ch);
 793         return;
 794 }
 795
 796 int VM::get_sound_in_data(int ch, int32_t* dst, int expect_samples, int expect_rate, int expect_channels)
 797 {
 798         if(dst == NULL) return 0;
 799         if(expect_samples <= 0) return 0;
 800         int n_ch = -1;
 801         switch(ch) {
 802         case 0x00:
 803                 n_ch = line_in_ch;
 804                 break;
 805         case 0x01:
 806                 n_ch = mic_in_ch;
 807                 break;
 808         case 0x100:
 809                 n_ch = adc_in_ch;
 810                 break;
 811         }
 812         if(n_ch < 0) return 0;
 813         int samples = event->get_sound_in_data(n_ch, dst, expect_samples, expect_rate, expect_channels);
 814         return samples;
 815 }
 816
 817 // Write to event's buffer
 818 int VM::sound_in(int ch, int32_t* src, int samples)
 819 {
 820         if(ch < 0) return 0;
 821         if(ch >= 2) return 0;
 822         int n_ch = -1;
 823         switch(ch) {
 824         case 0x100:  // ADC in from MIXER, not connected.
 825                 break;
 826         case 0x00: // LINE
 827                 n_ch = line_in_ch;
 828                 break;
 829         case 0x01: // MIC
 830                 n_ch = mic_in_ch;
 831                 break;
 832         }
 833         if(n_ch < 0) return 0;
 834
 835         int ss = 0;
 836         {
 837                 emu->lock_vm();
 838                 ss =  event->write_sound_in_buffer(n_ch, src, samples);
 839                 emu->unlock_vm();
 840
 841         }
 842         return ss;
 843 }
 844
 845 #if defined(USE_HARD_DISK)
 846 void VM::open_hard_disk(int drv, const _TCHAR* file_path)
 847 {
 848         if((drv < USE_HARD_DISK) && (drv < 8) && (drv >= 0)) {
 849                 if(scsi_hdd[drv] != NULL) {
 850                         scsi_hdd[drv]->open(0, file_path, 512);
 851                 }
 852         }
 853 }
 854
 855 void VM::close_hard_disk(int drv)
 856 {
 857         if((drv < USE_HARD_DISK) && (drv < 8) && (drv >= 0)) {
 858                 if(scsi_hdd[drv] != NULL) {
 859                         scsi_hdd[drv]->close(0);
 860                 }
 861         }
 862 }
 863
 864 bool VM::is_hard_disk_inserted(int drv)
 865 {
 866         if((drv < USE_HARD_DISK) && (drv < 8) && (drv >= 0)) {
 867                 if(scsi_hdd[drv] != NULL) {
 868                         return scsi_hdd[drv]->mounted(0);
 869                 }
 870         }
 871         return false;
 872 }
 873
 874 uint32_t VM::is_hard_disk_accessed()
 875 {
 876         uint32_t status = 0;
 877
 878         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 879                 if(scsi_hdd[drv] != NULL) {
 880                         if(scsi_hdd[drv]->accessed(0)) {
 881                                 status |= 1 << drv;
 882                         }
 883                 }
 884         }
 885         return status;
 886 }
 887 #endif // USE_HARD_DISK
 888
 889 void VM::open_compact_disc(int drv, const _TCHAR* file_path)
 890 {
 891         cdrom->open(file_path);
 892 }
 893
 894 void VM::close_compact_disc(int drv)
 895 {
 896         cdrom->close();
 897 }
 898
 899 bool VM::is_compact_disc_inserted(int drv)
 900 {
 901         return cdrom->mounted();
 902 }
 903
 904 uint32_t VM::is_compact_disc_accessed()
 905 {
 906         return cdrom->accessed();
 907 }
 908
 909 #ifdef USE_SOUND_VOLUME
 910 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 911 {
 912 #ifndef HAS_LINEIN_SOUND
 913 //      if(ch >= 7) ch++;
 914 #endif
 915 #ifndef HAS_MIC_SOUND
 916 //      if(ch >= 8) ch++;
 917 #endif
 918 #ifndef HAS_MODEM_SOUND
 919 //      if(ch >= 9) ch++;
 920 #endif
 921 #ifndef HAS_2ND_ADPCM
 922 //      if(ch >= 10) ch++;
 923 #endif
 924 #if 0
 925         if(ch == 0) { // BEEP
 926                 mixer->set_volume(beep_mix_ch, decibel_l, decibel_r);
 927         }
 928         else if(ch == 1) { // CD-ROM
 929                 //e_volume[1]->set_volume(0, decibel_l);
 930                 //e_volume[1]->set_volume(1, decibel_r);
 931                 mixer->set_volume(cdc_mix_ch, decibel_l, decibel_r);
 932         }
 933         else if(ch == 2) { // OPN2
 934                 mixer->set_volume(opn2_mix_ch, decibel_l, decibel_r);
 935         }
 936         else if(ch == 3) { // ADPCM
 937                 mixer->set_volume(pcm_mix_ch, decibel_l, decibel_r);
 938         }
 939         else if(ch == 4) { // LINE IN
 940                 //mixer->set_volume(line_mix_ch, decibel_l, decibel_r);
 941         }
 942         else if(ch == 5) { // MIC
 943                 //mic->set_volume(0, (decibel_l + decibel_r) / 2);
 944         }
 945         else if(ch == 6) { // MODEM
 946                 //modem->set_volume(0, (decibel_l + decibel_r) / 2);
 947         }
 948 #ifdef HAS_2ND_ADPCM
 949         else if(ch == 7) { // ADPCM
 950                 adpcm2->set_volume(0, decibel_l, decibel_r);
 951         }
 952 #endif
 953         else if(ch == 8) { // FDD
 954                 fdc->set_volume(0, decibel_l, decibel_r);
 955         }
 956         else if(ch == 9) { // HDD(ToDo)
 957                 fdc->set_volume(0, decibel_l, decibel_r);
 958         }
 959 #else
 960         if(ch == 0) { // BEEP
 961                 beep->set_volume(0, decibel_l, decibel_r);
 962         }
 963         else if(ch == 1) { // CD-ROM
 964                 cdrom->set_volume(0, decibel_l, decibel_r);
 965         }
 966         else if(ch == 2) { // OPN2
 967                 opn2->set_volume(0, decibel_l, decibel_r);
 968         }
 969         else if(ch == 3) { // ADPCM
 970                 rf5c68->set_volume(0, decibel_l, decibel_r);
 971         }
 972         else if(ch == 4) { // SEEK, HEAD UP / DOWN
 973                 seek_sound->set_volume(0, decibel_l, decibel_r);
 974                 head_up_sound->set_volume(0, decibel_l, decibel_r);
 975                 head_down_sound->set_volume(0, decibel_l, decibel_r);
 976         }
 977
 978 #endif
 979 }
 980 #endif
 981
 982 // ----------------------------------------------------------------------------
 983 // notify key
 984 // ----------------------------------------------------------------------------
 985
 986 void VM::key_down(int code, bool repeat)
 987 {
 988         keyboard->key_down(code);
 989 }
 990
 991 void VM::key_up(int code)
 992 {
 993         keyboard->key_up(code);
 994 }
 995
 996 // ----------------------------------------------------------------------------
 997 // user interface
 998 // ----------------------------------------------------------------------------
 999 void VM::open_cart(int drv, const _TCHAR* file_path)
1000 {
1001         switch(drv) {
1002         case 0:
1003                 if(iccard1 != NULL) {
1004                         iccard1->open_cart(file_path);
1005                 }
1006                 break;
1007         case 1:
1008                 if(iccard2 != NULL) {
1009                         iccard2->open_cart(file_path);
1010                 }
1011                 break;
1012         }
1013 }
1014
1015 void VM::close_cart(int drv)
1016 {
1017         switch(drv) {
1018         case 0:
1019                 if(iccard1 != NULL) {
1020                         iccard1->close_cart();
1021                 }
1022                 break;
1023         case 1:
1024                 if(iccard2 != NULL) {
1025                         iccard2->close_cart();
1026                 }
1027                 break;
1028         }
1029 }
1030
1031 bool VM::is_cart_inserted(int drv)
1032 {
1033         switch(drv) {
1034         case 0:
1035                 if(iccard1 != NULL) {
1036                         return iccard1->is_cart_inserted();
1037                 }
1038                 break;
1039         case 1:
1040                 if(iccard2 != NULL) {
1041                         return iccard2->is_cart_inserted();
1042                 }
1043                 break;
1044         }
1045         return false;
1046 }
1047
1048 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
1049 {
1050         fdc->open_disk(drv, file_path, bank);
1051 //      floppy->change_disk(drv);
1052 }
1053
1054 void VM::close_floppy_disk(int drv)
1055 {
1056         fdc->close_disk(drv);
1057 }
1058
1059 bool VM::is_floppy_disk_inserted(int drv)
1060 {
1061         return fdc->is_disk_inserted(drv);
1062 }
1063
1064 void VM::is_floppy_disk_protected(int drv, bool value)
1065 {
1066         fdc->is_disk_protected(drv, value);
1067 }
1068
1069 bool VM::is_floppy_disk_protected(int drv)
1070 {
1071         return fdc->is_disk_protected(drv);
1072 }
1073
1074 bool VM::is_frame_skippable()
1075 {
1076         return event->is_frame_skippable();
1077 }
1078
1079 void VM::update_config()
1080 {
1081         for(DEVICE* device = first_device; device; device = device->next_device) {
1082                 device->update_config();
1083         }
1084 }
1085
1086 double VM::get_current_usec()
1087 {
1088         if(event == NULL) return 0.0;
1089         return event->get_current_usec();
1090 }
1091
1092 uint64_t VM::get_current_clock_uint64()
1093 {
1094                 if(event == NULL) return (uint64_t)0;
1095                 return event->get_current_clock_uint64();
1096 }
1097
1098 #define STATE_VERSION   3
1099
1100 bool VM::process_state(FILEIO* state_fio, bool loading)
1101 {
1102         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
1103                 return false;
1104         }
1105         for(DEVICE* device = first_device; device; device = device->next_device) {
1106                 // Note: typeid(foo).name is fixed by recent ABI.Not decr. 6.
1107                 // const char *name = typeid(*device).name();
1108                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
1109                 const char *name = device->get_device_name();
1110                 int len = strlen(name);
1111                 if(!state_fio->StateCheckInt32(len)) {
1112                         return false;
1113                 }
1114                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
1115                         return false;
1116                 }
1117                 if(!device->process_state(state_fio, loading)) {
1118                         if(loading) {
1119                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
1120                         }
1121                         return false;
1122                 }
1123         }
1124         // Machine specified.
1125         state_fio->StateValue(beep_mix_ch);
1126         state_fio->StateValue(cdc_mix_ch);
1127         state_fio->StateValue(opn2_mix_ch);
1128         state_fio->StateValue(pcm_mix_ch);
1129         state_fio->StateValue(line_mix_ch);
1130         state_fio->StateValue(modem_mix_ch);
1131         state_fio->StateValue(mic_mix_ch);
1132
1133
1134         return true;
1135 }
1136