source/src/vm/pv2000/pv2000.cpp

   1 /*
   2         CASIO PV-2000 Emulator 'EmuGaki'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.08.18 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "pv2000.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../io.h"
  16 #include "../memory.h"
  17 #include "../sn76489an.h"
  18 #include "../tms9918a.h"
  19 #include "../z80.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "cmt.h"
  26 #include "keyboard.h"
  27 #include "printer.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // initialize
  31 // ----------------------------------------------------------------------------
  32
  33 VM::VM(EMU* parent_emu) : VM_TEMPLATE(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         dummy->set_device_name(_T("1st Dummy"));
  40
  41         io = new IO(this, emu);
  42         memory = new MEMORY(this, emu);
  43         psg = new SN76489AN(this, emu);
  44         vdp = new TMS9918A(this, emu);
  45         cpu = new Z80(this, emu);
  46         cmt = new CMT(this, emu);
  47         key = new KEYBOARD(this, emu);
  48         prt = new PRINTER(this, emu);
  49         // set contexts
  50         event->set_context_cpu(cpu);
  51         event->set_context_sound(psg);
  52
  53         vdp->set_context_irq(cpu, SIG_CPU_NMI, 1);
  54         key->set_context_cpu(cpu);
  55
  56         // cpu bus
  57         cpu->set_context_mem(memory);
  58         cpu->set_context_io(io);
  59         cpu->set_context_intr(dummy);
  60 #ifdef USE_DEBUGGER
  61         cpu->set_context_debugger(new DEBUGGER(this, emu));
  62 #endif
  63
  64         // memory bus
  65         memset(ram, 0, sizeof(ram));
  66         memset(ext, 0, sizeof(ext));
  67         memset(ipl, 0xff, sizeof(ipl));
  68         memset(cart, 0xff, sizeof(cart));
  69
  70         memory->read_bios(_T("IPL.ROM"), ipl, sizeof(ipl));
  71
  72         memory->set_memory_r(0x0000, 0x3fff, ipl);
  73         memory->set_memory_mapped_io_rw(0x4000, 0x4fff, vdp);
  74         memory->set_memory_rw(0x7000, 0x7fff, ram);
  75         memory->set_memory_rw(0x8000, 0xbfff, ext);
  76         memory->set_memory_r(0xc000, 0xffff, cart);
  77
  78         // i/o bus
  79         io->set_iomap_single_w(0x00, cmt);
  80         io->set_iomap_single_r(0x10, key);
  81         io->set_iomap_single_rw(0x20, key);
  82         io->set_iomap_single_r(0x40, key);
  83         io->set_iomap_single_w(0x40, psg);
  84         io->set_iomap_single_rw(0x60, cmt);
  85         io->set_iomap_single_w(0x80, prt);
  86         io->set_iomap_single_r(0x90, prt);
  87         io->set_iomap_single_w(0xa0, prt);
  88         io->set_iomap_single_w(0xb0, prt);
  89
  90         // initialize all devices
  91 #if defined(__GIT_REPO_VERSION)
  92         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
  93 #endif
  94         for(DEVICE* device = first_device; device; device = device->next_device) {
  95                 device->initialize();
  96         }
  97         inserted = false;
  98 }
  99
 100 VM::~VM()
 101 {
 102         // delete all devices
 103         for(DEVICE* device = first_device; device;) {
 104                 DEVICE *next_device = device->next_device;
 105                 device->release();
 106                 delete device;
 107                 device = next_device;
 108         }
 109 }
 110
 111 DEVICE* VM::get_device(int id)
 112 {
 113         for(DEVICE* device = first_device; device; device = device->next_device) {
 114                 if(device->this_device_id == id) {
 115                         return device;
 116                 }
 117         }
 118         return NULL;
 119 }
 120
 121 // ----------------------------------------------------------------------------
 122 // drive virtual machine
 123 // ----------------------------------------------------------------------------
 124
 125 void VM::reset()
 126 {
 127         // reset all devices
 128         for(DEVICE* device = first_device; device; device = device->next_device) {
 129                 device->reset();
 130         }
 131 }
 132
 133 void VM::run()
 134 {
 135         event->drive();
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139 // debugger
 140 // ----------------------------------------------------------------------------
 141
 142 #ifdef USE_DEBUGGER
 143 DEVICE *VM::get_cpu(int index)
 144 {
 145         if(index == 0) {
 146                 return cpu;
 147         }
 148         return NULL;
 149 }
 150 #endif
 151
 152 // ----------------------------------------------------------------------------
 153 // draw screen
 154 // ----------------------------------------------------------------------------
 155
 156 void VM::draw_screen()
 157 {
 158         vdp->draw_screen();
 159 }
 160
 161 // ----------------------------------------------------------------------------
 162 // soud manager
 163 // ----------------------------------------------------------------------------
 164
 165 void VM::initialize_sound(int rate, int samples)
 166 {
 167         // init sound manager
 168         event->initialize_sound(rate, samples);
 169
 170         // init sound gen
 171         psg->initialize_sound(rate, 3579545, 8000);
 172 }
 173
 174 uint16_t* VM::create_sound(int* extra_frames)
 175 {
 176         return event->create_sound(extra_frames);
 177 }
 178
 179 int VM::get_sound_buffer_ptr()
 180 {
 181         return event->get_sound_buffer_ptr();
 182 }
 183
 184 #ifdef USE_SOUND_VOLUME
 185 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 186 {
 187         if(ch == 0) {
 188                 psg->set_volume(0, decibel_l, decibel_r);
 189         }
 190 }
 191 #endif
 192
 193 // ----------------------------------------------------------------------------
 194 // notify key
 195 // ----------------------------------------------------------------------------
 196
 197 void VM::key_down(int code, bool repeat)
 198 {
 199         key->key_down(code);
 200 }
 201
 202 void VM::key_up(int code)
 203 {
 204         key->key_up(code);
 205 }
 206
 207 // ----------------------------------------------------------------------------
 208 // user interface
 209 // ----------------------------------------------------------------------------
 210
 211 void VM::open_cart(int drv, const _TCHAR* file_path)
 212 {
 213         if(drv == 0) {
 214                 memset(cart, 0xff, sizeof(cart));
 215                 inserted = memory->read_image(file_path, cart, sizeof(cart));
 216                 reset();
 217         }
 218 }
 219
 220 void VM::close_cart(int drv)
 221 {
 222         if(drv == 0) {
 223                 memset(cart, 0xff, sizeof(cart));
 224                 inserted = false;
 225                 reset();
 226         }
 227 }
 228
 229 bool VM::is_cart_inserted(int drv)
 230 {
 231         if(drv == 0) {
 232                 return inserted;
 233         } else {
 234                 return false;
 235         }
 236 }
 237
 238 void VM::play_tape(int drv, const _TCHAR* file_path)
 239 {
 240         cmt->play_tape(file_path);
 241 }
 242
 243 void VM::rec_tape(int drv, const _TCHAR* file_path)
 244 {
 245         cmt->rec_tape(file_path);
 246 }
 247
 248 void VM::close_tape(int drv)
 249 {
 250         cmt->close_tape();
 251 }
 252
 253 bool VM::is_tape_inserted(int drv)
 254 {
 255         return cmt->is_tape_inserted();
 256 }
 257
 258 bool VM::is_frame_skippable()
 259 {
 260         return event->is_frame_skippable();
 261 }
 262
 263 void VM::update_config()
 264 {
 265         for(DEVICE* device = first_device; device; device = device->next_device) {
 266                 device->update_config();
 267         }
 268 }
 269
 270 #define STATE_VERSION   2
 271
 272 bool VM::process_state(FILEIO* state_fio, bool loading)
 273 {
 274         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 275                 return false;
 276         }
 277         for(DEVICE* device = first_device; device; device = device->next_device) {
 278                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 279                 // const char *name = typeid(*device).name();
 280                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 281                 const char *name = device->get_device_name();
 282                 int len = strlen(name);
 283
 284                 if(!state_fio->StateCheckInt32(len)) {
 285                         if(loading) {
 286                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 287                         }
 288                         return false;
 289                 }
 290                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 291                         if(loading) {
 292                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 293                         }
 294                         return false;
 295                 }
 296                 if(!device->process_state(state_fio, loading)) {
 297                         if(loading) {
 298                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 299                         }
 300                         return false;
 301                 }
 302         }
 303         // Machine specified.
 304         state_fio->StateBuffer(ram, sizeof(ram), 1);
 305         state_fio->StateBuffer(ext, sizeof(ext), 1);
 306         state_fio->StateBool(inserted);
 307         return true;
 308 }