source/src/vm/hc20/hc20.cpp

   1 /*
   2         EPSON HC-20 Emulator 'eHC-20'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2011.05.23-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "hc20.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../disk.h"
  17 #include "../hd146818p.h"
  18 #include "../i8255.h"
  19 //#include "../mc6800.h"
  20 #include "../hd6301.h"
  21 #include "../noise.h"
  22 #include "../tf20.h"
  23 #include "../upd765a.h"
  24 #include "../z80.h"
  25 #include "../z80sio.h"
  26
  27 #ifdef USE_DEBUGGER
  28 #include "../debugger.h"
  29 #endif
  30
  31 #include "memory.h"
  32
  33 // ----------------------------------------------------------------------------
  34 // initialize
  35 // ----------------------------------------------------------------------------
  36
  37 VM::VM(EMU* parent_emu) : emu(parent_emu)
  38 {
  39         // create devices
  40         first_device = last_device = NULL;
  41         dummy = new DEVICE(this, emu);  // must be 1st device
  42         event = new EVENT(this, emu);   // must be 2nd device
  43         dummy->set_device_name(_T("1st Dummy"));
  44
  45         beep = new BEEP(this, emu);
  46         rtc = new HD146818P(this, emu);
  47         //cpu = new MC6800(this, emu);
  48         cpu = new HD6301(this, emu);
  49         tf20 = new TF20(this, emu);
  50         pio_tf20 = new I8255(this, emu);
  51         fdc_tf20 = new UPD765A(this, emu);
  52         fdc_tf20->set_context_noise_seek(new NOISE(this, emu));
  53         fdc_tf20->set_context_noise_head_down(new NOISE(this, emu));
  54         fdc_tf20->set_context_noise_head_up(new NOISE(this, emu));
  55         cpu_tf20 = new Z80(this, emu);
  56         sio_tf20 = new Z80SIO(this, emu);
  57         pio_tf20->set_device_name(_T("TF20 PIO(i8255)"));
  58         cpu_tf20->set_device_name(_T("TF20 CPU(Z80)"));
  59         sio_tf20->set_device_name(_T("TF20 SIO(Z80 SIO)"));
  60         fdc_tf20->set_device_name(_T("TF20 FDC(uPD765A)"));
  61         memory = new MEMORY(this, emu);
  62         // set contexts
  63         event->set_context_cpu(cpu);
  64         event->set_context_cpu(cpu_tf20, 4000000);
  65         event->set_context_sound(beep);
  66         event->set_context_sound(fdc_tf20->get_context_noise_seek());
  67         event->set_context_sound(fdc_tf20->get_context_noise_head_down());
  68         event->set_context_sound(fdc_tf20->get_context_noise_head_up());
  69
  70 /*
  71         memory:
  72                 0002    in      ---     port1 (cpu)
  73                 0003    in/out  ---     port2 (cpu)
  74                 0006            ---     port3 (cpu)
  75                 0007            ---     port4 (cpu)
  76                 0020    out     bit0-7  key scan line
  77                 0022    in      bit0-7  key scan result (lo)
  78                 0026    out     bit0-2  selection of lcd driver (0,1-6)
  79                                 bit3    output selection for lcd driver (0=data 1=command)
  80                                 bit4    key input interrupt mask (0=Mask)
  81                                 bit5    pout (serial control line)
  82                                 bit6    shift/load select for rom cartridge (0=load 1=shift)
  83                                 bit7    clock for rom cartridge
  84                 0028    in      bit0-1  key scan result (hi)
  85                                 bit6    power switch interrupt flag (0=active)
  86                                 bit7    busy signal of lcd controller (0=busy)
  87                 002a    out     bit0-7  output data to lcd controller
  88                         in      ---     serial clock to lcd controller
  89                 002b    in      ---     serial clock to lcd controller
  90                 002c    in/out  ---     used for interrupt mask setting in sleep mode
  91                 0030    in/out  ---     select expansion unit rom (bank1)
  92                 0032    in/out  ---     select internal rom (bank0)
  93                 0033    in/out  ---     select internal rom (bank0)
  94                 003c    in      ---     XXX: unknown
  95
  96         port1:
  97                 p10     in      dsr (RS-232C)
  98                 p11     in      cts (RS-232C)
  99                 p12     in      error status of slave mcu (P34)
 100                 p13     in      external interrupt flag(0=active)
 101                 p14     in      battery voltage interrupt flag (0=active)
 102                 p15     in      key input inerrupt flag (0=active)
 103                 p16     in      pin (serial control line)
 104                 p17     in      counter status of microcassete / rom data / plug-in option
 105
 106         port 2:
 107                 p20     in      barcode input signal (1=mark 0=space)
 108                 p21     out     txd (RS-232C)
 109                 p22     out     selection for CPU serial communication (0=slave 1=serial)
 110 */
 111         cpu->set_context_port2(memory, SIG_MEMORY_PORT_2, 0xff, 0);
 112         cpu->set_context_port3(memory, SIG_MEMORY_PORT_3, 0xff, 0);
 113         cpu->set_context_port4(memory, SIG_MEMORY_PORT_4, 0xff, 0);
 114         cpu->set_context_sio(memory, SIG_MEMORY_SIO_MAIN);
 115         rtc->set_context_intr(memory, SIG_MEMORY_RTC_IRQ, 1);
 116
 117         memory->set_context_beep(beep);
 118         memory->set_context_cpu(cpu);
 119         memory->set_context_rtc(rtc);
 120         memory->set_context_sio_tf20(sio_tf20);
 121
 122         // cpu bus
 123         cpu->set_context_mem(memory);
 124 #ifdef USE_DEBUGGER
 125         cpu->set_context_debugger(new DEBUGGER(this, emu));
 126 #endif
 127
 128         // tf-20
 129         tf20->set_context_cpu(cpu_tf20);
 130         tf20->set_context_fdc(fdc_tf20);
 131         tf20->set_context_pio(pio_tf20);
 132         tf20->set_context_sio(sio_tf20);
 133         cpu_tf20->set_context_mem(tf20);
 134         cpu_tf20->set_context_io(tf20);
 135         cpu_tf20->set_context_intr(tf20);
 136 #ifdef USE_DEBUGGER
 137         cpu_tf20->set_context_debugger(new DEBUGGER(this, emu));
 138 #endif
 139         fdc_tf20->set_context_irq(cpu_tf20, SIG_CPU_IRQ, 1);
 140         sio_tf20->set_context_send(0, memory, SIG_MEMORY_SIO_TF20);
 141         sio_tf20->set_tx_clock(0, 4915200 / 8); // 4.9152MHz / 8 (38.4kbps)
 142         sio_tf20->set_rx_clock(0, 4915200 / 8); // baud-rate can be changed by jumper pin
 143         sio_tf20->set_tx_clock(1, 4915200 / 8);
 144         sio_tf20->set_rx_clock(1, 4915200 / 8);
 145
 146         // initialize all devices
 147         for(DEVICE* device = first_device; device; device = device->next_device) {
 148                 device->initialize();
 149         }
 150         for(int i = 0; i < MAX_DRIVE; i++) {
 151                 fdc_tf20->set_drive_type(i, DRIVE_TYPE_2D);
 152         }
 153 }
 154
 155 VM::~VM()
 156 {
 157         // delete all devices
 158         for(DEVICE* device = first_device; device;) {
 159                 DEVICE *next_device = device->next_device;
 160                 device->release();
 161                 delete device;
 162                 device = next_device;
 163         }
 164 }
 165
 166 DEVICE* VM::get_device(int id)
 167 {
 168         for(DEVICE* device = first_device; device; device = device->next_device) {
 169                 if(device->this_device_id == id) {
 170                         return device;
 171                 }
 172         }
 173         return NULL;
 174 }
 175
 176 // ----------------------------------------------------------------------------
 177 // drive virtual machine
 178 // ----------------------------------------------------------------------------
 179
 180 void VM::reset()
 181 {
 182         // reset all devices
 183         for(DEVICE* device = first_device; device; device = device->next_device) {
 184                 device->reset();
 185         }
 186         cpu->write_signal(SIG_MC6801_PORT_1, 0x78, 0xff);
 187         cpu->write_signal(SIG_MC6801_PORT_2, 0x9e, 0xff);
 188 }
 189
 190 void VM::notify_power_off()
 191 {
 192 //      this->out_debug_log(T("--- POWER OFF ---\n"));
 193         memory->notify_power_off();
 194 }
 195
 196 void VM::run()
 197 {
 198         event->drive();
 199 }
 200
 201 // ----------------------------------------------------------------------------
 202 // debugger
 203 // ----------------------------------------------------------------------------
 204
 205 #ifdef USE_DEBUGGER
 206 DEVICE *VM::get_cpu(int index)
 207 {
 208         if(index == 0) {
 209                 return cpu;
 210         } else if(index == 1) {
 211                 return cpu_tf20;
 212         }
 213         return NULL;
 214 }
 215 #endif
 216
 217 // ----------------------------------------------------------------------------
 218 // draw screen
 219 // ----------------------------------------------------------------------------
 220
 221 void VM::draw_screen()
 222 {
 223         memory->draw_screen();
 224 }
 225
 226 // ----------------------------------------------------------------------------
 227 // soud manager
 228 // ----------------------------------------------------------------------------
 229
 230 void VM::initialize_sound(int rate, int samples)
 231 {
 232         // init sound manager
 233         event->initialize_sound(rate, samples);
 234
 235         // init sound gen
 236         beep->initialize_sound(rate, 1000, 8000);
 237 }
 238
 239 uint16_t* VM::create_sound(int* extra_frames)
 240 {
 241         return event->create_sound(extra_frames);
 242 }
 243
 244 int VM::get_sound_buffer_ptr()
 245 {
 246         return event->get_sound_buffer_ptr();
 247 }
 248
 249 #ifdef USE_SOUND_VOLUME
 250 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 251 {
 252         if(ch == 0) {
 253                 beep->set_volume(0, decibel_l, decibel_r);
 254         } else if(ch == 1) {
 255                 fdc_tf20->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 256                 fdc_tf20->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 257                 fdc_tf20->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 258         }
 259 }
 260 #endif
 261
 262 // ----------------------------------------------------------------------------
 263 // notify key
 264 // ----------------------------------------------------------------------------
 265
 266 void VM::key_down(int code, bool repeat)
 267 {
 268         memory->key_down(code);
 269 }
 270
 271 void VM::key_up(int code)
 272 {
 273         memory->key_up(code);
 274 }
 275
 276 // ----------------------------------------------------------------------------
 277 // user interface
 278 // ----------------------------------------------------------------------------
 279
 280 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 281 {
 282         fdc_tf20->open_disk(drv, file_path, bank);
 283 }
 284
 285 void VM::close_floppy_disk(int drv)
 286 {
 287         fdc_tf20->close_disk(drv);
 288 }
 289
 290 bool VM::is_floppy_disk_inserted(int drv)
 291 {
 292         return fdc_tf20->is_disk_inserted(drv);
 293 }
 294
 295 void VM::is_floppy_disk_protected(int drv, bool value)
 296 {
 297         fdc_tf20->is_disk_protected(drv, value);
 298 }
 299
 300 bool VM::is_floppy_disk_protected(int drv)
 301 {
 302         return fdc_tf20->is_disk_protected(drv);
 303 }
 304
 305 uint32_t VM::is_floppy_disk_accessed()
 306 {
 307         return fdc_tf20->read_signal(0);
 308 }
 309
 310 void VM::play_tape(int drv, const _TCHAR* file_path)
 311 {
 312         memory->play_tape(file_path);
 313 }
 314
 315 void VM::rec_tape(int drv, const _TCHAR* file_path)
 316 {
 317         memory->rec_tape(file_path);
 318 }
 319
 320 void VM::close_tape(int drv)
 321 {
 322         memory->close_tape();
 323 }
 324
 325 bool VM::is_tape_inserted(int drv)
 326 {
 327         return memory->is_tape_inserted();
 328 }
 329
 330 bool VM::is_frame_skippable()
 331 {
 332         return event->is_frame_skippable();
 333 }
 334
 335 void VM::update_config()
 336 {
 337         for(DEVICE* device = first_device; device; device = device->next_device) {
 338                 device->update_config();
 339         }
 340 }
 341
 342 #define STATE_VERSION   3
 343
 344 #include "../../statesub.h"
 345 #include "../../qt/gui/csp_logger.h"
 346 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 347
 348 void VM::decl_state(void)
 349 {
 350         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::HC_20_HEAD")), csp_logger);
 351
 352         for(DEVICE* device = first_device; device; device = device->next_device) {
 353                 device->decl_state();
 354         }
 355 }
 356
 357 void VM::save_state(FILEIO* state_fio)
 358 {
 359         //state_fio->FputUint32(STATE_VERSION);
 360
 361         if(state_entry != NULL) {
 362                 state_entry->save_state(state_fio);
 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         bool mb = false;
 375         if(state_entry != NULL) {
 376                 mb = state_entry->load_state(state_fio);
 377         }
 378         if(!mb) {
 379                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 380                 return false;
 381         }
 382         for(DEVICE* device = first_device; device; device = device->next_device) {
 383                 if(!device->load_state(state_fio)) {
 384                         return false;
 385                 }
 386         }
 387         return true;
 388 }
 389