source/src/vm/fmr30/fmr30.cpp

   1 /*
   2         FUJITSU FMR-30 Emulator 'eFMR-30'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.12.29 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "fmr30.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../i8237.h"
  16 #include "../i8251.h"
  17 #include "../i8253.h"
  18 #include "../i8259.h"
  19 #include "../i286.h"
  20 #include "../io.h"
  21 #include "../mb8877.h"
  22 #include "../scsi_hdd.h"
  23 #include "../scsi_host.h"
  24 #include "../sn76489an.h"
  25
  26 #ifdef USE_DEBUGGER
  27 #include "../debugger.h"
  28 #endif
  29
  30 #include "../fmr50/bios.h"
  31 #include "cmos.h"
  32 #include "floppy.h"
  33 #include "keyboard.h"
  34 #include "memory.h"
  35 #include "rtc.h"
  36 #include "scsi.h"
  37 #include "serial.h"
  38 #include "system.h"
  39 #include "timer.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // initialize
  43 // ----------------------------------------------------------------------------
  44
  45 VM::VM(EMU* parent_emu) : emu(parent_emu)
  46 {
  47         // create devices
  48         first_device = last_device = NULL;
  49         dummy = new DEVICE(this, emu);  // must be 1st device
  50         event = new EVENT(this, emu);   // must be 2nd device
  51
  52         dma = new I8237(this, emu);
  53         sio_kb = new I8251(this, emu);  // keyboard
  54         sio_sub = new I8251(this, emu); // sub display
  55         sio_ch1 = new I8251(this, emu); // RS-232C ch.1
  56         sio_ch2 = new I8251(this, emu); // RS-232C ch.2
  57         pit = new I8253(this, emu);
  58         pic = new I8259(this, emu);
  59         cpu = new I286(this, emu);
  60         io = new IO(this, emu);
  61         fdc = new MB8877(this, emu);
  62         scsi_host = new SCSI_HOST(this, emu);
  63         for(int i = 0; i < 7; i++) {
  64                 if(FILEIO::IsFileExisting(create_local_path(_T("SCSI%d.DAT"), i))) {
  65                         SCSI_HDD* scsi_hdd = new SCSI_HDD(this, emu);
  66                         scsi_hdd->scsi_id = i;
  67                         scsi_hdd->set_context_interface(scsi_host);
  68                         scsi_host->set_context_target(scsi_hdd);
  69                 }
  70         }
  71         psg = new SN76489AN(this, emu);
  72
  73         if(FILEIO::IsFileExisting(create_local_path(_T("IPL.ROM")))) {
  74                 bios = NULL;
  75         } else {
  76                 bios = new BIOS(this, emu);
  77         }
  78         cmos = new CMOS(this, emu);
  79         floppy = new FLOPPY(this, emu);
  80         keyboard = new KEYBOARD(this, emu);
  81         memory = new MEMORY(this, emu);
  82         rtc = new RTC(this, emu);
  83         scsi = new SCSI(this, emu);
  84         serial = new SERIAL(this, emu);
  85         system = new SYSTEM(this, emu);
  86         timer = new TIMER(this, emu);
  87
  88         // set contexts
  89         event->set_context_cpu(cpu);
  90         event->set_context_sound(psg);
  91
  92         dma->set_context_memory(memory);
  93         dma->set_context_ch0(fdc);
  94         dma->set_context_ch1(scsi_host);
  95         dma->set_context_tc1(scsi, SIG_SCSI_TC, 1);
  96         sio_kb->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_KB, 1);
  97         sio_kb->set_context_txrdy(serial, SIG_SERIAL_TXRDY_KB, 1);
  98         sio_sub->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_SUB, 1);
  99         sio_sub->set_context_txrdy(serial, SIG_SERIAL_TXRDY_SUB, 1);
 100         sio_ch1->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_CH1, 1);
 101         sio_ch1->set_context_txrdy(serial, SIG_SERIAL_TXRDY_CH1, 1);
 102         sio_ch2->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_CH2, 1);
 103         sio_ch2->set_context_txrdy(serial, SIG_SERIAL_TXRDY_CH2, 1);
 104         pit->set_context_ch0(timer, SIG_TIMER_CH0, 1);
 105         pit->set_context_ch1(timer, SIG_TIMER_CH1, 1);
 106         pit->set_constant_clock(0, 1000000);
 107         pit->set_constant_clock(1, 1000000);
 108         pic->set_context_cpu(cpu);
 109         fdc->set_context_drq(dma, SIG_I8237_CH0, 1);
 110         fdc->set_context_irq(floppy, SIG_FLOPPY_IRQ, 1);
 111         scsi_host->set_context_irq(scsi, SIG_SCSI_IRQ, 1);
 112         scsi_host->set_context_drq(scsi, SIG_SCSI_DRQ, 1);
 113
 114         floppy->set_context_fdc(fdc);
 115         floppy->set_context_pic(pic);
 116         keyboard->set_context_sio(sio_kb);
 117         memory->set_context_cpu(cpu);
 118         memory->set_context_dma(dma);
 119         rtc->set_context_pic(pic);
 120         scsi->set_context_dma(dma);
 121         scsi->set_context_pic(pic);
 122         scsi->set_context_host(scsi_host);
 123         serial->set_context_pic(pic);
 124         serial->set_context_sio(sio_kb, sio_sub, sio_ch1, sio_ch2);
 125         timer->set_context_pic(pic);
 126
 127         // cpu bus
 128         cpu->set_context_mem(memory);
 129         cpu->set_context_io(io);
 130         cpu->set_context_intr(pic);
 131         if(bios) {
 132                 bios->set_context_mem(memory);
 133                 bios->set_context_io(io);
 134                 bios->set_cmos_ptr(cmos->get_cmos());
 135                 bios->set_vram_ptr(memory->get_vram());
 136                 bios->set_cvram_ptr(memory->get_cvram());
 137                 bios->set_kvram_ptr(memory->get_kvram());
 138                 cpu->set_context_bios(bios);
 139         }
 140 #ifdef SINGLE_MODE_DMA
 141         cpu->set_context_dma(dma);
 142 #endif
 143 #ifdef USE_DEBUGGER
 144         cpu->set_context_debugger(new DEBUGGER(this, emu));
 145 #endif
 146
 147         // i/o bus
 148         io->set_iomap_range_rw(0x00, 0x07, rtc);
 149         io->set_iomap_range_rw(0x08, 0x09, sio_kb);
 150         io->set_iomap_range_rw(0x0a, 0x0b, serial);
 151         io->set_iomap_range_rw(0x10, 0x11, sio_sub);
 152         io->set_iomap_range_rw(0x12, 0x13, serial);
 153         io->set_iomap_single_r(0x18, system);
 154         io->set_iomap_range_rw(0x1d, 0x1e, memory);
 155         io->set_iomap_range_r(0x20, 0x21, system);
 156         io->set_iomap_single_rw(0x26, memory);
 157         io->set_iomap_range_rw(0x30, 0x33, fdc);
 158         io->set_iomap_range_rw(0x34, 0x36, floppy);
 159         io->set_iomap_single_w(0x40, psg);
 160         io->set_iomap_range_rw(0x42, 0x43, timer);
 161         io->set_iomap_range_rw(0x46, 0x47, system);
 162         io->set_iomap_range_rw(0x60, 0x61, sio_ch1);
 163         io->set_iomap_range_rw(0x62, 0x66, serial);
 164         io->set_iomap_range_rw(0x70, 0x71, sio_ch2);
 165         io->set_iomap_range_rw(0x72, 0x76, serial);
 166         io->set_iomap_alias_rw(0x100, pic, I8259_ADDR_CHIP0 | 0);
 167         io->set_iomap_alias_rw(0x101, pic, I8259_ADDR_CHIP0 | 1);
 168         io->set_iomap_alias_rw(0x108, pic, I8259_ADDR_CHIP1 | 0);
 169         io->set_iomap_alias_rw(0x10a, pic, I8259_ADDR_CHIP1 | 1);
 170         io->set_iomap_range_rw(0x110, 0x11f, dma);
 171         io->set_iomap_range_w(0x120, 0x123, memory);
 172         io->set_iomap_range_rw(0x130, 0x133, pit);
 173         io->set_iomap_range_rw(0x2f0, 0x2f3, scsi);
 174         io->set_iomap_range_rw(0x300, 0x30f, memory);
 175         io->set_iomap_range_rw(0xc000, 0xdfff, cmos);
 176         io->set_iomap_single_rw(0xff00, system);
 177
 178         // initialize all devices
 179         for(DEVICE* device = first_device; device; device = device->next_device) {
 180                 device->initialize();
 181         }
 182         if(bios) {
 183                 for(int i = 0; i < MAX_DRIVE; i++) {
 184                         bios->set_disk_handler(i, fdc->get_disk_handler(i));
 185                 }
 186         }
 187 }
 188
 189 VM::~VM()
 190 {
 191         // delete all devices
 192         for(DEVICE* device = first_device; device;) {
 193                 DEVICE *next_device = device->next_device;
 194                 device->release();
 195                 delete device;
 196                 device = next_device;
 197         }
 198 }
 199
 200 DEVICE* VM::get_device(int id)
 201 {
 202         for(DEVICE* device = first_device; device; device = device->next_device) {
 203                 if(device->this_device_id == id) {
 204                         return device;
 205                 }
 206         }
 207         return NULL;
 208 }
 209
 210 // ----------------------------------------------------------------------------
 211 // drive virtual machine
 212 // ----------------------------------------------------------------------------
 213
 214 void VM::reset()
 215 {
 216         // reset all devices
 217         for(DEVICE* device = first_device; device; device = device->next_device) {
 218                 device->reset();
 219         }
 220         // temporary fix...
 221         for(DEVICE* device = first_device; device; device = device->next_device) {
 222                 device->reset();
 223         }
 224
 225         // set devices
 226         sio_kb->write_signal(SIG_I8251_DSR, 1, 1);
 227         sio_sub->write_signal(SIG_I8251_DSR, 0, 0);
 228 }
 229
 230 void VM::run()
 231 {
 232         event->drive();
 233 }
 234
 235 // ----------------------------------------------------------------------------
 236 // debugger
 237 // ----------------------------------------------------------------------------
 238
 239 #ifdef USE_DEBUGGER
 240 DEVICE *VM::get_cpu(int index)
 241 {
 242         if(index == 0) {
 243                 return cpu;
 244         }
 245         return NULL;
 246 }
 247 #endif
 248
 249 // ----------------------------------------------------------------------------
 250 // draw screen
 251 // ----------------------------------------------------------------------------
 252
 253 void VM::draw_screen()
 254 {
 255         memory->draw_screen();
 256 }
 257
 258 uint32_t VM::get_access_lamp_status()
 259 {
 260         uint32_t status_fdd = fdc->read_signal(0);
 261         uint32_t status_hdd = scsi_host->read_signal(0);
 262         if(bios) {
 263                 uint32_t status = bios->read_signal(0);
 264                 status_fdd |= status & 0x0f;
 265                 status_hdd |= status >> 4;
 266         }
 267         return (status_hdd) ? 4 : (status_fdd & (1 | 4)) ? 1 : (status_fdd & (2 | 8)) ? 2 : 0;
 268 }
 269
 270 // ----------------------------------------------------------------------------
 271 // soud manager
 272 // ----------------------------------------------------------------------------
 273
 274 void VM::initialize_sound(int rate, int samples)
 275 {
 276         // init sound manager
 277         event->initialize_sound(rate, samples);
 278
 279         // init sound gen
 280         psg->initialize_sound(rate, 125000, 10000);
 281 }
 282
 283 uint16_t* VM::create_sound(int* extra_frames)
 284 {
 285         return event->create_sound(extra_frames);
 286 }
 287
 288 int VM::get_sound_buffer_ptr()
 289 {
 290         return event->get_sound_buffer_ptr();
 291 }
 292
 293 #ifdef USE_SOUND_VOLUME
 294 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 295 {
 296         if(ch == 0) {
 297                 psg->set_volume(0, decibel_l, decibel_r);
 298         }
 299 }
 300 #endif
 301
 302 // ----------------------------------------------------------------------------
 303 // notify key
 304 // ----------------------------------------------------------------------------
 305
 306 void VM::key_down(int code, bool repeat)
 307 {
 308         keyboard->key_down(code);
 309 }
 310
 311 void VM::key_up(int code)
 312 {
 313         keyboard->key_up(code);
 314 }
 315
 316 // ----------------------------------------------------------------------------
 317 // user interface
 318 // ----------------------------------------------------------------------------
 319
 320 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 321 {
 322         fdc->open_disk(drv, file_path, bank);
 323         floppy->change_disk(drv);
 324 }
 325
 326 void VM::close_floppy_disk(int drv)
 327 {
 328         fdc->close_disk(drv);
 329 }
 330
 331 bool VM::is_floppy_disk_inserted(int drv)
 332 {
 333         return fdc->is_disk_inserted(drv);
 334 }
 335
 336 void VM::is_floppy_disk_protected(int drv, bool value)
 337 {
 338         fdc->is_disk_protected(drv, value);
 339 }
 340
 341 bool VM::is_floppy_disk_protected(int drv)
 342 {
 343         return fdc->is_disk_protected(drv);
 344 }
 345
 346 bool VM::is_frame_skippable()
 347 {
 348         return event->is_frame_skippable();
 349 }
 350
 351 void VM::update_config()
 352 {
 353         for(DEVICE* device = first_device; device; device = device->next_device) {
 354                 device->update_config();
 355         }
 356 }
 357
 358 #define STATE_VERSION   2
 359
 360 void VM::save_state(FILEIO* state_fio)
 361 {
 362         state_fio->FputUint32(STATE_VERSION);
 363
 364         for(DEVICE* device = first_device; device; device = device->next_device) {
 365                 device->save_state(state_fio);
 366         }
 367 }
 368
 369 bool VM::load_state(FILEIO* state_fio)
 370 {
 371         if(state_fio->FgetUint32() != STATE_VERSION) {
 372                 return false;
 373         }
 374         for(DEVICE* device = first_device; device; device = device->next_device) {
 375                 if(!device->load_state(state_fio)) {
 376                         return false;
 377                 }
 378         }
 379         return true;
 380 }
 381