source/src/vm/jr800/jr800.cpp

   1 /*
   2         National JR-800 Emulator 'eJR-800'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2017.03.13-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "jr800.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../hd44102.h"
  17 //#include "../mc6800.h"
  18 #include "../hd6301.h"
  19 #include "../memory.h"
  20 #include "../noise.h"
  21 #include "../pcm1bit.h"
  22
  23 #ifdef USE_DEBUGGER
  24 #include "../debugger.h"
  25 #endif
  26
  27 #include "io.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // initialize
  31 // ----------------------------------------------------------------------------
  32
  33 VM::VM(EMU* parent_emu) : emu(parent_emu)
  34 {
  35         // create devices
  36         first_device = last_device = NULL;
  37         dummy = new DEVICE(this, emu);  // must be 1st device
  38         event = new EVENT(this, emu);   // must be 2nd device
  39
  40         drec = new DATAREC(this, emu);
  41         drec->set_context_noise_play(new NOISE(this, emu));
  42         drec->set_context_noise_stop(new NOISE(this, emu));
  43         drec->set_context_noise_fast(new NOISE(this, emu));
  44         for(int i = 0; i < 8; i++) {
  45                 lcd[i] = new HD44102(this, emu);
  46         }
  47 //      cpu = new MC6800(this, emu);
  48         cpu = new HD6301(this, emu);
  49         memory = new MEMORY(this, emu);
  50         pcm = new PCM1BIT(this, emu);
  51
  52         io = new IO(this, emu);
  53
  54         // set contexts
  55         event->set_context_cpu(cpu);
  56         event->set_context_sound(drec);
  57         event->set_context_sound(pcm);
  58         event->set_context_sound(drec->get_context_noise_play());
  59         event->set_context_sound(drec->get_context_noise_stop());
  60         event->set_context_sound(drec->get_context_noise_fast());
  61
  62 //      cpu->set_context_port1(drec, SIG_DATAREC_MIC, 0x01, 0);
  63         cpu->set_context_port1(pcm, SIG_PCM1BIT_ON, 0x08, 0);
  64         cpu->set_context_port1(pcm, SIG_PCM1BIT_SIGNAL, 0x10, 0);
  65
  66         for(int i = 0; i < 8; i++) {
  67                 io->set_context_lcd(i, lcd[i]);
  68         }
  69
  70         // cpu bus
  71         cpu->set_context_mem(memory);
  72 #ifdef USE_DEBUGGER
  73         cpu->set_context_debugger(new DEBUGGER(this, emu));
  74 #endif
  75
  76         // memory bus
  77         memset(ram, 0x00, sizeof(ram));
  78         memset(rom, 0xff, sizeof(rom));
  79
  80         memory->read_bios(_T("BASIC.ROM"), rom, sizeof(rom));
  81
  82         memory->set_memory_rw(0x2000, 0x7fff, ram);
  83         memory->set_memory_r(0x8000, 0xffff, rom);
  84         memory->set_memory_mapped_io_rw(0x0a00, 0x0bff, io);
  85         memory->set_memory_mapped_io_rw(0x0d00, 0x0fff, io);
  86
  87         // initialize all devices
  88         for(DEVICE* device = first_device; device; device = device->next_device) {
  89                 device->initialize();
  90         }
  91 }
  92
  93 VM::~VM()
  94 {
  95         // delete all devices
  96         for(DEVICE* device = first_device; device;) {
  97                 DEVICE *next_device = device->next_device;
  98                 device->release();
  99                 delete device;
 100                 device = next_device;
 101         }
 102 }
 103
 104 DEVICE* VM::get_device(int id)
 105 {
 106         for(DEVICE* device = first_device; device; device = device->next_device) {
 107                 if(device->this_device_id == id) {
 108                         return device;
 109                 }
 110         }
 111         return NULL;
 112 }
 113
 114 // ----------------------------------------------------------------------------
 115 // drive virtual machine
 116 // ----------------------------------------------------------------------------
 117
 118 void VM::reset()
 119 {
 120         // reset all devices
 121         for(DEVICE* device = first_device; device; device = device->next_device) {
 122                 device->reset();
 123         }
 124         cpu->write_signal(SIG_MC6801_PORT_1, 0x00, 0xff);
 125         cpu->write_signal(SIG_MC6801_PORT_2, 0x00, 0xff);
 126         cpu->write_signal(SIG_MC6801_PORT_3, 0x00, 0xff);
 127         cpu->write_signal(SIG_MC6801_PORT_4, 0x00, 0xff);
 128 }
 129
 130 void VM::run()
 131 {
 132         event->drive();
 133 }
 134
 135 // ----------------------------------------------------------------------------
 136 // debugger
 137 // ----------------------------------------------------------------------------
 138
 139 #ifdef USE_DEBUGGER
 140 DEVICE *VM::get_cpu(int index)
 141 {
 142         if(index == 0) {
 143                 return cpu;
 144         }
 145         return NULL;
 146 }
 147 #endif
 148
 149 // ----------------------------------------------------------------------------
 150 // draw screen
 151 // ----------------------------------------------------------------------------
 152
 153 void VM::draw_screen()
 154 {
 155         for(int y = 0; y < 2; y++) {
 156                 for(int x = 0; x < 4; x++) {
 157                         lcd[x + 4 * y]->screen_update(50 * x - 4, 32 * y, y == 0);
 158                 }
 159         }
 160 }
 161
 162 // ----------------------------------------------------------------------------
 163 // soud manager
 164 // ----------------------------------------------------------------------------
 165
 166 void VM::initialize_sound(int rate, int samples)
 167 {
 168         // init sound manager
 169         event->initialize_sound(rate, samples);
 170
 171         // init sound gen
 172         pcm->initialize_sound(rate, 8000);
 173 }
 174
 175 uint16_t* VM::create_sound(int* extra_frames)
 176 {
 177         return event->create_sound(extra_frames);
 178 }
 179
 180 int VM::get_sound_buffer_ptr()
 181 {
 182         return event->get_sound_buffer_ptr();
 183 }
 184
 185 #ifdef USE_SOUND_VOLUME
 186 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 187 {
 188         if(ch == 0) {
 189                 pcm->set_volume(0, decibel_l, decibel_r);
 190         } if(ch == 1) {
 191                 drec->set_volume(0, decibel_l, decibel_r);
 192         } else if(ch == 2) {
 193                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 194                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 195                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 196         }
 197 }
 198 #endif
 199
 200 // ----------------------------------------------------------------------------
 201 // user interface
 202 // ----------------------------------------------------------------------------
 203
 204 void VM::play_tape(int drv, const _TCHAR* file_path)
 205 {
 206         drec->play_tape(file_path);
 207 }
 208
 209 void VM::rec_tape(int drv, const _TCHAR* file_path)
 210 {
 211         drec->rec_tape(file_path);
 212 }
 213
 214 void VM::close_tape(int drv)
 215 {
 216         emu->lock_vm();
 217         drec->close_tape();
 218         emu->unlock_vm();
 219 }
 220
 221 bool VM::is_tape_inserted(int drv)
 222 {
 223         return drec->is_tape_inserted();
 224 }
 225
 226 bool VM::is_tape_playing(int drv)
 227 {
 228         return drec->is_tape_playing();
 229 }
 230
 231 bool VM::is_tape_recording(int drv)
 232 {
 233         return drec->is_tape_recording();
 234 }
 235
 236 int VM::get_tape_position(int drv)
 237 {
 238         return drec->get_tape_position();
 239 }
 240
 241 const _TCHAR* VM::get_tape_message(int drv)
 242 {
 243         return drec->get_message();
 244 }
 245
 246 bool VM::is_frame_skippable()
 247 {
 248         return event->is_frame_skippable();
 249 }
 250
 251 void VM::update_config()
 252 {
 253         for(DEVICE* device = first_device; device; device = device->next_device) {
 254                 device->update_config();
 255         }
 256 }
 257
 258 #define STATE_VERSION   3
 259
 260 void VM::save_state(FILEIO* state_fio)
 261 {
 262         state_fio->FputUint32(STATE_VERSION);
 263
 264         for(DEVICE* device = first_device; device; device = device->next_device) {
 265                 device->save_state(state_fio);
 266         }
 267         state_fio->Fwrite(ram, sizeof(ram), 1);
 268 }
 269
 270 bool VM::load_state(FILEIO* state_fio)
 271 {
 272         if(state_fio->FgetUint32() != STATE_VERSION) {
 273                 return false;
 274         }
 275         for(DEVICE* device = first_device; device; device = device->next_device) {
 276                 if(!device->load_state(state_fio)) {
 277                         return false;
 278                 }
 279         }
 280         state_fio->Fread(ram, sizeof(ram), 1);
 281         return true;
 282 }
 283