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 "../sn76489an.h"
  23
  24 #ifdef USE_DEBUGGER
  25 #include "../debugger.h"
  26 #endif
  27
  28 #include "../fmr50/bios.h"
  29 #include "cmos.h"
  30 #include "floppy.h"
  31 #include "keyboard.h"
  32 #include "memory.h"
  33 #include "rtc.h"
  34 //#include "scsi.h"
  35 #include "serial.h"
  36 #include "system.h"
  37 #include "timer.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // initialize
  41 // ----------------------------------------------------------------------------
  42
  43 VM::VM(EMU* parent_emu) : emu(parent_emu)
  44 {
  45         // create devices
  46         first_device = last_device = NULL;
  47         dummy = new DEVICE(this, emu);  // must be 1st device
  48         event = new EVENT(this, emu);   // must be 2nd device
  49
  50         dma = new I8237(this, emu);
  51         sio_kb = new I8251(this, emu);  // keyboard
  52         sio_sub = new I8251(this, emu); // sub display
  53         sio_ch1 = new I8251(this, emu); // RS-232C ch.1
  54         sio_ch2 = new I8251(this, emu); // RS-232C ch.2
  55         pit = new I8253(this, emu);
  56         pic = new I8259(this, emu);
  57         cpu = new I286(this, emu);
  58         io = new IO(this, emu);
  59         fdc = new MB8877(this, emu);
  60         psg = new SN76489AN(this, emu);
  61
  62         bios = new BIOS(this, emu);
  63         cmos = new CMOS(this, emu);
  64         floppy = new FLOPPY(this, emu);
  65         keyboard = new KEYBOARD(this, emu);
  66         memory = new MEMORY(this, emu);
  67         rtc = new RTC(this, emu);
  68 //      scsi = new SCSI(this, emu);
  69         serial = new SERIAL(this, emu);
  70         system = new SYSTEM(this, emu);
  71         timer = new TIMER(this, emu);
  72
  73         // set contexts
  74         event->set_context_cpu(cpu);
  75         event->set_context_sound(psg);
  76
  77         dma->set_context_memory(memory);
  78         dma->set_context_ch0(fdc);
  79 //      dma->set_context_ch1(scsi);
  80         sio_kb->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_KB, 1);
  81         sio_kb->set_context_txrdy(serial, SIG_SERIAL_TXRDY_KB, 1);
  82         sio_sub->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_SUB, 1);
  83         sio_sub->set_context_txrdy(serial, SIG_SERIAL_TXRDY_SUB, 1);
  84         sio_ch1->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_CH1, 1);
  85         sio_ch1->set_context_txrdy(serial, SIG_SERIAL_TXRDY_CH1, 1);
  86         sio_ch2->set_context_rxrdy(serial, SIG_SERIAL_RXRDY_CH2, 1);
  87         sio_ch2->set_context_txrdy(serial, SIG_SERIAL_TXRDY_CH2, 1);
  88         pit->set_context_ch0(timer, SIG_TIMER_CH0, 1);
  89         pit->set_context_ch1(timer, SIG_TIMER_CH1, 1);
  90         pit->set_constant_clock(0, 1000000);
  91         pit->set_constant_clock(1, 1000000);
  92         pic->set_context_cpu(cpu);
  93 //      fdc->set_context_drq(dma, SIG_I8237_CH0, 1);
  94         fdc->set_context_irq(floppy, SIG_FLOPPY_IRQ, 1);
  95
  96         bios->set_context_mem(memory);
  97         bios->set_context_io(io);
  98         bios->set_cmos_ptr(cmos->get_cmos());
  99         bios->set_vram_ptr(memory->get_vram());
 100         bios->set_cvram_ptr(memory->get_cvram());
 101         bios->set_kvram_ptr(memory->get_kvram());
 102         floppy->set_context_fdc(fdc);
 103         floppy->set_context_pic(pic);
 104         keyboard->set_context_sio(sio_kb);
 105         memory->set_context_cpu(cpu);
 106         memory->set_context_dma(dma);
 107         rtc->set_context_pic(pic);
 108 //      scsi->set_context_dma(dma, SIG_I8237_CH1);
 109 //      scsi->set_context_pic(pic, SIG_I8259_CHIP1 | SIG_I8259_IR2);
 110         serial->set_context_pic(pic);
 111         serial->set_context_sio(sio_kb, sio_sub, sio_ch1, sio_ch2);
 112         timer->set_context_pic(pic);
 113
 114         // cpu bus
 115         cpu->set_context_mem(memory);
 116         cpu->set_context_io(io);
 117         cpu->set_context_intr(pic);
 118         cpu->set_context_bios(bios);
 119 #ifdef SINGLE_MODE_DMA
 120         cpu->set_context_dma(dma);
 121 #endif
 122 #ifdef USE_DEBUGGER
 123         cpu->set_context_debugger(new DEBUGGER(this, emu));
 124 #endif
 125
 126         // i/o bus
 127         io->set_iomap_range_rw(0x00, 0x07, rtc);
 128         io->set_iomap_range_rw(0x08, 0x09, sio_kb);
 129         io->set_iomap_range_rw(0x0a, 0x0b, serial);
 130         io->set_iomap_range_rw(0x10, 0x11, sio_sub);
 131         io->set_iomap_range_rw(0x12, 0x13, serial);
 132         io->set_iomap_single_r(0x18, system);
 133         io->set_iomap_range_rw(0x1d, 0x1e, memory);
 134         io->set_iomap_range_r(0x20, 0x21, system);
 135         io->set_iomap_single_rw(0x26, memory);
 136         io->set_iomap_range_rw(0x30, 0x33, fdc);
 137         io->set_iomap_range_rw(0x34, 0x36, floppy);
 138         io->set_iomap_single_w(0x40, psg);
 139         io->set_iomap_range_rw(0x42, 0x43, timer);
 140         io->set_iomap_range_rw(0x46, 0x47, system);
 141         io->set_iomap_range_rw(0x60, 0x61, sio_ch1);
 142         io->set_iomap_range_rw(0x62, 0x66, serial);
 143         io->set_iomap_range_rw(0x70, 0x71, sio_ch2);
 144         io->set_iomap_range_rw(0x72, 0x76, serial);
 145         io->set_iomap_alias_rw(0x100, pic, I8259_ADDR_CHIP0 | 0);
 146         io->set_iomap_alias_rw(0x101, pic, I8259_ADDR_CHIP0 | 1);
 147         io->set_iomap_alias_rw(0x108, pic, I8259_ADDR_CHIP1 | 0);
 148         io->set_iomap_alias_rw(0x10a, pic, I8259_ADDR_CHIP1 | 1);
 149         io->set_iomap_range_rw(0x110, 0x11f, dma);
 150         io->set_iomap_range_w(0x120, 0x123, memory);
 151         io->set_iomap_range_rw(0x130, 0x133, pit);
 152 //      io->set_iomap_range_rw(0x2f0, 0x2f3, scsi);
 153         io->set_iomap_range_rw(0x300, 0x30f, memory);
 154         io->set_iomap_range_rw(0xc000, 0xdfff, cmos);
 155         io->set_iomap_single_rw(0xff00, system);
 156
 157         // initialize all devices
 158         for(DEVICE* device = first_device; device; device = device->next_device) {
 159                 device->initialize();
 160         }
 161         for(int i = 0; i < MAX_DRIVE; i++) {
 162                 bios->set_disk_handler(i, fdc->get_disk_handler(i));
 163         }
 164 }
 165
 166 VM::~VM()
 167 {
 168         // delete all devices
 169         for(DEVICE* device = first_device; device;) {
 170                 DEVICE *next_device = device->next_device;
 171                 device->release();
 172                 delete device;
 173                 device = next_device;
 174         }
 175 }
 176
 177 DEVICE* VM::get_device(int id)
 178 {
 179         for(DEVICE* device = first_device; device; device = device->next_device) {
 180                 if(device->this_device_id == id) {
 181                         return device;
 182                 }
 183         }
 184         return NULL;
 185 }
 186
 187 // ----------------------------------------------------------------------------
 188 // drive virtual machine
 189 // ----------------------------------------------------------------------------
 190
 191 void VM::reset()
 192 {
 193         // reset all devices
 194         for(DEVICE* device = first_device; device; device = device->next_device) {
 195                 device->reset();
 196         }
 197         // temporary fix...
 198         for(DEVICE* device = first_device; device; device = device->next_device) {
 199                 device->reset();
 200         }
 201
 202         // set devices
 203         sio_kb->write_signal(SIG_I8251_DSR, 1, 1);
 204         sio_sub->write_signal(SIG_I8251_DSR, 0, 0);
 205 }
 206
 207 void VM::run()
 208 {
 209         event->drive();
 210 }
 211
 212 // ----------------------------------------------------------------------------
 213 // debugger
 214 // ----------------------------------------------------------------------------
 215
 216 #ifdef USE_DEBUGGER
 217 DEVICE *VM::get_cpu(int index)
 218 {
 219         if(index == 0) {
 220                 return cpu;
 221         }
 222         return NULL;
 223 }
 224 #endif
 225
 226 // ----------------------------------------------------------------------------
 227 // draw screen
 228 // ----------------------------------------------------------------------------
 229
 230 void VM::draw_screen()
 231 {
 232         memory->draw_screen();
 233 }
 234
 235 int VM::access_lamp()
 236 {
 237         uint32 status = fdc->read_signal(0) | bios->read_signal(0);
 238         return (status & 0x10) ? 4 : (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 239 }
 240
 241 // ----------------------------------------------------------------------------
 242 // soud manager
 243 // ----------------------------------------------------------------------------
 244
 245 void VM::initialize_sound(int rate, int samples)
 246 {
 247         // init sound manager
 248         event->initialize_sound(rate, samples);
 249
 250         // init sound gen
 251         psg->init(rate, 125000, 10000);
 252 }
 253
 254 uint16* VM::create_sound(int* extra_frames)
 255 {
 256         return event->create_sound(extra_frames);
 257 }
 258
 259 int VM::sound_buffer_ptr()
 260 {
 261         return event->sound_buffer_ptr();
 262 }
 263
 264 // ----------------------------------------------------------------------------
 265 // notify key
 266 // ----------------------------------------------------------------------------
 267
 268 void VM::key_down(int code, bool repeat)
 269 {
 270         keyboard->key_down(code);
 271 }
 272
 273 void VM::key_up(int code)
 274 {
 275         keyboard->key_up(code);
 276 }
 277
 278 // ----------------------------------------------------------------------------
 279 // user interface
 280 // ----------------------------------------------------------------------------
 281
 282 void VM::open_disk(int drv, _TCHAR* file_path, int bank)
 283 {
 284         fdc->open_disk(drv, file_path, bank);
 285         floppy->change_disk(drv);
 286 }
 287
 288 void VM::close_disk(int drv)
 289 {
 290         fdc->close_disk(drv);
 291 }
 292
 293 bool VM::disk_inserted(int drv)
 294 {
 295         return fdc->disk_inserted(drv);
 296 }
 297
 298 void VM::set_disk_protected(int drv, bool value)
 299 {
 300         fdc->set_disk_protected(drv, value);
 301 }
 302
 303 bool VM::get_disk_protected(int drv)
 304 {
 305         return fdc->get_disk_protected(drv);
 306 }
 307
 308 bool VM::now_skip()
 309 {
 310         return event->now_skip();
 311 }
 312
 313 void VM::update_config()
 314 {
 315         for(DEVICE* device = first_device; device; device = device->next_device) {
 316                 device->update_config();
 317         }
 318 }
 319
 320 #define STATE_VERSION   1
 321
 322 void VM::save_state(FILEIO* state_fio)
 323 {
 324         state_fio->FputUint32(STATE_VERSION);
 325
 326         for(DEVICE* device = first_device; device; device = device->next_device) {
 327                 device->save_state(state_fio);
 328         }
 329 }
 330
 331 bool VM::load_state(FILEIO* state_fio)
 332 {
 333         if(state_fio->FgetUint32() != STATE_VERSION) {
 334                 return false;
 335         }
 336         for(DEVICE* device = first_device; device; device = device->next_device) {
 337                 if(!device->load_state(state_fio)) {
 338                         return false;
 339                 }
 340         }
 341         return true;
 342 }
 343