source/src/vm/trnjr/trnjr.cpp

   1 /*
   2         EPS TRN Junior Emulator 'eTRNJunior'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2022.07.02-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "trnjr.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../i8255.h"
  16 #include "../io.h"
  17 #include "../midi.h"
  18 #include "../speaker.h"
  19 #include "../tmpz84c015.h"
  20 #include "../z80.h"
  21 #include "../z80ctc.h"
  22 #include "../z80sio.h"
  23
  24 #ifdef USE_DEBUGGER
  25 #include "../debugger.h"
  26 #endif
  27
  28 #include "display.h"
  29 #include "membus.h"
  30
  31 // ----------------------------------------------------------------------------
  32 // initialize
  33 // ----------------------------------------------------------------------------
  34
  35 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  36 {
  37         // create devices
  38         first_device = last_device = NULL;
  39         dummy = new DEVICE(this, emu);  // must be 1st device
  40         event = new EVENT(this, emu);   // must be 2nd device
  41
  42         pio1 = new I8255(this, emu);
  43         pio1->set_device_name(_T("8255 PIO (7-Seg/Keyboard)"));
  44         pio2 = new I8255(this, emu);
  45         pio2->set_device_name(_T("8255 PIO (ROM Writer)"));
  46         io = new IO(this, emu);
  47         midi = new MIDI(this, emu);
  48         speaker = new SPEAKER(this, emu);
  49         // TMPZ84C013
  50         cpudev = new TMPZ84C015(this, emu);
  51         cpudev->set_context_ctc(new Z80CTC(this, emu));
  52         cpudev->set_context_sio(new Z80SIO(this, emu));
  53         cpu = new Z80(this, emu);
  54
  55         display = new DISPLAY(this, emu);
  56         memory = new MEMBUS(this, emu);
  57
  58         // set contexts
  59         event->set_context_cpu(cpu);
  60         event->set_context_sound(speaker);
  61
  62         cpudev->set_context_ctc_zc1(cpudev, SIG_TMPZ84C015_SIO_TX_CLK_CH0, 1);
  63         cpudev->set_context_ctc_zc1(cpudev, SIG_TMPZ84C015_SIO_RX_CLK_CH0, 1);
  64         cpudev->set_context_ctc_zc2(cpudev, SIG_TMPZ84C015_SIO_TX_CLK_CH1, 1);
  65         cpudev->set_context_ctc_zc2(cpudev, SIG_TMPZ84C015_SIO_RX_CLK_CH1, 1);
  66         cpudev->set_context_ctc_zc3(cpu, SIG_CPU_NMI, 1);
  67         cpudev->set_context_sio_send(1, midi, SIG_MIDI_OUT);
  68         pio1->set_context_port_a(display, SIG_DISPLAY_PORT_A, 0xff, 0);
  69         pio1->set_context_port_b(speaker, SIG_SPEAKER_SAMPLE, 0xff, 0);
  70         pio1->set_context_port_c(display, SIG_DISPLAY_PORT_C, 0xf0, 0);
  71         midi->set_context_in(cpudev, SIG_TMPZ84C015_SIO_RECV_CH1, 0xff);
  72
  73         display->set_context_pio(pio1);
  74         memory->set_context_cpudev(cpudev);
  75
  76         // cpu bus
  77         cpu->set_context_mem(memory);
  78         cpu->set_context_io(io);
  79         cpu->set_context_intr(cpudev);
  80 #ifdef USE_DEBUGGER
  81         cpu->set_context_debugger(new DEBUGGER(this, emu));
  82 #endif
  83
  84         // z80 family daisy chain
  85         cpudev->set_context_intr(cpu, 0);
  86
  87         // memory bus
  88         memset(ram, 0x00, sizeof(ram));
  89         memset(rom, 0xff, sizeof(rom));
  90
  91         memory->read_bios(_T("MON.ROM"), rom, sizeof(rom));
  92
  93         memory->set_memory_r (0x0000, 0x7fff, rom);
  94         memory->set_memory_rw(0x8000, 0xffff, ram);
  95
  96         // i/o bus
  97         cpudev->set_iomap(io);
  98         io->set_iomap_range_rw(0x60, 0x63, pio1);
  99         io->set_iomap_range_rw(0x64, 0x67, pio2);
 100 //      io->set_iomap_range_rw(0x6c, 0x6f, fdc ); // uPD72605
 101
 102         // initialize all devices
 103         for(DEVICE* device = first_device; device; device = device->next_device) {
 104                 device->initialize();
 105         }
 106 }
 107
 108 VM::~VM()
 109 {
 110         // delete all devices
 111         for(DEVICE* device = first_device; device;) {
 112                 DEVICE *next_device = device->next_device;
 113                 device->release();
 114                 delete device;
 115                 device = next_device;
 116         }
 117 }
 118
 119 DEVICE* VM::get_device(int id)
 120 {
 121         for(DEVICE* device = first_device; device; device = device->next_device) {
 122                 if(device->this_device_id == id) {
 123                         return device;
 124                 }
 125         }
 126         return NULL;
 127 }
 128
 129 // ----------------------------------------------------------------------------
 130 // drive virtual machine
 131 // ----------------------------------------------------------------------------
 132
 133 void VM::reset()
 134 {
 135         // reset all devices
 136         for(DEVICE* device = first_device; device; device = device->next_device) {
 137                 device->reset();
 138         }
 139 }
 140
 141 void VM::run()
 142 {
 143         event->drive();
 144 }
 145
 146 // ----------------------------------------------------------------------------
 147 // debugger
 148 // ----------------------------------------------------------------------------
 149
 150 #ifdef USE_DEBUGGER
 151 DEVICE *VM::get_cpu(int index)
 152 {
 153         if(index == 0) {
 154                 return cpu;
 155         }
 156         return NULL;
 157 }
 158 #endif
 159
 160 // ----------------------------------------------------------------------------
 161 // draw screen
 162 // ----------------------------------------------------------------------------
 163
 164 void VM::draw_screen()
 165 {
 166         display->draw_screen();
 167 }
 168
 169 // ----------------------------------------------------------------------------
 170 // soud manager
 171 // ----------------------------------------------------------------------------
 172
 173 void VM::initialize_sound(int rate, int samples)
 174 {
 175         // init sound manager
 176         event->initialize_sound(rate, samples);
 177
 178         // init sound gen
 179         speaker->initialize_sound(rate, 8000);
 180 }
 181
 182 uint16_t* VM::create_sound(int* extra_frames)
 183 {
 184         return event->create_sound(extra_frames);
 185 }
 186
 187 int VM::get_sound_buffer_ptr()
 188 {
 189         return event->get_sound_buffer_ptr();
 190 }
 191
 192 #ifdef USE_SOUND_VOLUME
 193 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 194 {
 195         if(ch == 0) {
 196                 speaker->set_volume(0, decibel_l, decibel_r);
 197         }
 198 }
 199 #endif
 200
 201 // ----------------------------------------------------------------------------
 202 // notify key
 203 // ----------------------------------------------------------------------------
 204
 205 void VM::key_down(int code, bool repeat)
 206 {
 207 }
 208
 209 void VM::key_up(int code)
 210 {
 211 }
 212
 213 // ----------------------------------------------------------------------------
 214 // user interface
 215 // ----------------------------------------------------------------------------
 216
 217 void VM::load_binary(int drv, const _TCHAR* file_path)
 218 {
 219         if(drv == 0) {
 220                 memory->read_image(file_path, ram, sizeof(ram));
 221         }
 222 }
 223
 224 void VM::save_binary(int drv, const _TCHAR* file_path)
 225 {
 226         if(drv == 0) {
 227                 memory->write_image(file_path, ram, sizeof(ram));
 228         }
 229 }
 230
 231 bool VM::is_frame_skippable()
 232 {
 233         return event->is_frame_skippable();
 234 }
 235
 236 void VM::update_config()
 237 {
 238         for(DEVICE* device = first_device; device; device = device->next_device) {
 239                 device->update_config();
 240         }
 241 }
 242
 243 #define STATE_VERSION   1
 244
 245 bool VM::process_state(FILEIO* state_fio, bool loading)
 246 {
 247         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 248                 return false;
 249         }
 250         for(DEVICE* device = first_device; device; device = device->next_device) {
 251                 const _TCHAR *name = char_to_tchar(typeid(*device).name() + 6); // skip "class "
 252                 int len = (int)_tcslen(name);
 253
 254                 if(!state_fio->StateCheckInt32(len)) {
 255                         return false;
 256                 }
 257                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 258                         return false;
 259                 }
 260                 if(!device->process_state(state_fio, loading)) {
 261                         return false;
 262                 }
 263         }
 264         state_fio->StateArray(ram, sizeof(ram), 1);
 265         return true;
 266 }
 267