source/src/vm/phc25/phc25.cpp

   1 /*
   2         SANYO PHC-25 Emulator 'ePHC-25'
   3         SEIKO MAP-1010 Emulator 'eMAP-1010'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2010.08.03-
   7
   8         [ virtual machine ]
   9 */
  10
  11 #include "phc25.h"
  12 #include "../../emu.h"
  13 #include "../device.h"
  14 #include "../event.h"
  15
  16 #include "../datarec.h"
  17 #include "../io.h"
  18 #include "../mc6847.h"
  19 #include "../not.h"
  20 #include "../ym2203.h"
  21 #include "../z80.h"
  22
  23 #ifdef USE_DEBUGGER
  24 #include "../debugger.h"
  25 #endif
  26
  27 #include "joystick.h"
  28 #include "keyboard.h"
  29 #include "memory.h"
  30 #include "system.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // initialize
  34 // ----------------------------------------------------------------------------
  35
  36 VM::VM(EMU* parent_emu) : emu(parent_emu)
  37 {
  38         // create devices
  39         first_device = last_device = NULL;
  40         dummy = new DEVICE(this, emu);  // must be 1st device
  41         event = new EVENT(this, emu);   // must be 2nd device
  42
  43         drec = new DATAREC(this, emu);
  44         io = new IO(this, emu);
  45         vdp = new MC6847(this, emu);
  46         g_not = new NOT(this, emu);
  47         psg = new YM2203(this, emu);
  48         cpu = new Z80(this, emu);
  49
  50         joystick = new JOYSTICK(this, emu);
  51         keyboard = new KEYBOARD(this, emu);
  52         memory = new MEMORY(this, emu);
  53         system = new SYSTEM(this, emu);
  54
  55         // set contexts
  56         event->set_context_cpu(cpu);
  57         event->set_context_sound(psg);
  58         event->set_context_sound(drec);
  59
  60         vdp->load_font_image(emu->bios_path(_T("FONT.ROM")));
  61         vdp->set_vram_ptr(memory->get_vram(), 0x1800);
  62 //      vdp->set_context_cpu(cpu);
  63         vdp->set_context_vsync(g_not, SIG_NOT_INPUT, 1);
  64         g_not->set_context_out(cpu, SIG_CPU_IRQ, 1);
  65
  66         vdp->set_context_vsync(system, SIG_SYSTEM_PORT, 0x10);
  67         drec->set_context_ear(system, SIG_SYSTEM_PORT, 0x20);
  68         // bit6: printer busy
  69         vdp->set_context_hsync(system, SIG_SYSTEM_PORT, 0x80);
  70
  71         joystick->set_context_psg(psg);
  72 #ifdef _MAP1010
  73         memory->set_context_keyboard(keyboard);
  74 #endif
  75         system->set_context_drec(drec);
  76         system->set_context_vdp(vdp);
  77
  78         // cpu bus
  79         cpu->set_context_mem(memory);
  80         cpu->set_context_io(io);
  81         cpu->set_context_intr(dummy);
  82 #ifdef USE_DEBUGGER
  83         cpu->set_context_debugger(new DEBUGGER(this, emu));
  84 #endif
  85
  86         // i/o bus
  87         io->set_iomap_single_rw(0x40, system);
  88 #ifndef _MAP1010
  89         io->set_iomap_range_r(0x80, 0x88, keyboard);
  90 #endif
  91         io->set_iomap_alias_w(0xc0, psg, 1);    // PSG data
  92         io->set_iomap_alias_w(0xc1, psg, 0);    // PSG ch
  93 //      io->set_iomap_alias_r(0xc0, psg, 1);
  94         io->set_iomap_alias_r(0xc1, psg, 1);    // PSG data
  95
  96         // initialize all devices
  97         for(DEVICE* device = first_device; device; device = device->next_device) {
  98                 device->initialize();
  99         }
 100 }
 101
 102 VM::~VM()
 103 {
 104         // delete all devices
 105         for(DEVICE* device = first_device; device;) {
 106                 DEVICE *next_device = device->next_device;
 107                 device->release();
 108                 delete device;
 109                 device = next_device;
 110         }
 111 }
 112
 113 DEVICE* VM::get_device(int id)
 114 {
 115         for(DEVICE* device = first_device; device; device = device->next_device) {
 116                 if(device->this_device_id == id) {
 117                         return device;
 118                 }
 119         }
 120         return NULL;
 121 }
 122
 123 // ----------------------------------------------------------------------------
 124 // drive virtual machine
 125 // ----------------------------------------------------------------------------
 126
 127 void VM::reset()
 128 {
 129         // reset all devices
 130         for(DEVICE* device = first_device; device; device = device->next_device) {
 131                 device->reset();
 132         }
 133 }
 134
 135 void VM::run()
 136 {
 137         event->drive();
 138 }
 139
 140 // ----------------------------------------------------------------------------
 141 // debugger
 142 // ----------------------------------------------------------------------------
 143
 144 #ifdef USE_DEBUGGER
 145 DEVICE *VM::get_cpu(int index)
 146 {
 147         if(index == 0) {
 148                 return cpu;
 149         }
 150         return NULL;
 151 }
 152 #endif
 153
 154 // ----------------------------------------------------------------------------
 155 // draw screen
 156 // ----------------------------------------------------------------------------
 157
 158 void VM::draw_screen()
 159 {
 160         vdp->draw_screen();
 161 }
 162
 163 // ----------------------------------------------------------------------------
 164 // soud manager
 165 // ----------------------------------------------------------------------------
 166
 167 void VM::initialize_sound(int rate, int samples)
 168 {
 169         // init sound manager
 170         event->initialize_sound(rate, samples);
 171
 172         // init sound gen
 173         psg->init(rate, 1996750, samples, 0, 0);
 174 }
 175
 176 uint16* VM::create_sound(int* extra_frames)
 177 {
 178         return event->create_sound(extra_frames);
 179 }
 180
 181 int VM::sound_buffer_ptr()
 182 {
 183         return event->sound_buffer_ptr();
 184 }
 185
 186 // ----------------------------------------------------------------------------
 187 // user interface
 188 // ----------------------------------------------------------------------------
 189
 190 void VM::play_tape(const _TCHAR* file_path)
 191 {
 192         drec->play_tape(file_path);
 193 }
 194
 195 void VM::rec_tape(const _TCHAR* file_path)
 196 {
 197         drec->rec_tape(file_path);
 198 }
 199
 200 void VM::close_tape()
 201 {
 202         drec->close_tape();
 203 }
 204
 205 bool VM::tape_inserted()
 206 {
 207         return drec->tape_inserted();
 208 }
 209
 210 bool VM::now_skip()
 211 {
 212         return event->now_skip();
 213 }
 214
 215 void VM::update_config()
 216 {
 217         for(DEVICE* device = first_device; device; device = device->next_device) {
 218                 device->update_config();
 219         }
 220 }
 221
 222 #define STATE_VERSION   1
 223
 224 void VM::save_state(FILEIO* state_fio)
 225 {
 226         state_fio->FputUint32(STATE_VERSION);
 227
 228         for(DEVICE* device = first_device; device; device = device->next_device) {
 229                 device->save_state(state_fio);
 230         }
 231 }
 232
 233 bool VM::load_state(FILEIO* state_fio)
 234 {
 235         if(state_fio->FgetUint32() != STATE_VERSION) {
 236                 return false;
 237         }
 238         for(DEVICE* device = first_device; device; device = device->next_device) {
 239                 if(!device->load_state(state_fio)) {
 240                         return false;
 241                 }
 242         }
 243         return true;
 244 }
 245