source/src/vm/smb80te/smb80te.cpp

   1 /*
   2         SHARP SM-B-80TE Emulator 'eSM-B-80TE'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2016.12.29-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "smb80te.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../io.h"
  17 #include "../not.h"
  18 #include "../z80.h"
  19 #include "../z80pio.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "memory.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // initialize
  29 // ----------------------------------------------------------------------------
  30
  31 VM::VM(EMU* parent_emu) : emu(parent_emu)
  32 {
  33         // create devices
  34         first_device = last_device = NULL;
  35         dummy = new DEVICE(this, emu);  // must be 1st device
  36         event = new EVENT(this, emu);   // must be 2nd device
  37
  38         drec = new DATAREC(this, emu);
  39         io = new IO(this, emu);
  40         not_ear = new NOT(this, emu);
  41         cpu = new Z80(this, emu);
  42         pio1 = new Z80PIO(this, emu);
  43         pio1->set_device_name(_T("8255 PIO (LEDs/Keyboard/CMT)"));
  44         pio2 = new Z80PIO(this, emu);
  45         pio2->set_device_name(_T("8255 PIO (User)"));
  46
  47         memory = new MEMORY(this, emu);
  48
  49         // set contexts
  50         event->set_context_cpu(cpu);
  51
  52         // PIO1 PA0-7   -> 7seg-LED data
  53         pio1->set_context_port_a(memory, SIG_MEMORY_PIO1_PA, 0xff, 0);
  54         // PIO1 PB0-2   <- Keyboard data
  55         // PIO1 PB3-5   -> 7seg-LED/Keyboard column
  56         pio1->set_context_port_b(memory, SIG_MEMORY_PIO1_PB, 0x38, 0);
  57         // PIO1 PB6     -> MIC
  58         pio1->set_context_port_b(drec, SIG_DATAREC_MIC, 0x40, 0);
  59         // PIO1 PB7     <- NOT <- EAR
  60         drec->set_context_ear(not_ear, SIG_NOT_INPUT, 1);
  61         not_ear->set_context_out(pio1, SIG_Z80PIO_PORT_B, 0x80);
  62
  63         memory->set_context_cpu(cpu);
  64         memory->set_context_drec(drec);
  65         memory->set_context_pio1(pio1);
  66
  67         // cpu bus
  68         cpu->set_context_mem(memory);
  69         cpu->set_context_io(io);
  70         cpu->set_context_intr(pio1);
  71
  72         // z80 family daisy chain
  73         pio1->set_context_intr(cpu, 0);
  74         pio1->set_context_child(pio2);
  75         pio2->set_context_intr(cpu, 1);
  76 #ifdef USE_DEBUGGER
  77         cpu->set_context_debugger(new DEBUGGER(this, emu));
  78 #endif
  79
  80         // i/o bus
  81         io->set_iomap_range_rw(0xd0, 0xd3, pio1);
  82         io->set_iomap_range_rw(0xd4, 0xd7, pio2);
  83         io->set_iomap_range_rw(0xd8, 0xdb, memory);
  84
  85         // initialize all devices
  86         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 device->initialize();
  88         }
  89 }
  90
  91 VM::~VM()
  92 {
  93         // delete all devices
  94         for(DEVICE* device = first_device; device;) {
  95                 DEVICE *next_device = device->next_device;
  96                 device->release();
  97                 delete device;
  98                 device = next_device;
  99         }
 100 }
 101
 102 DEVICE* VM::get_device(int id)
 103 {
 104         for(DEVICE* device = first_device; device; device = device->next_device) {
 105                 if(device->this_device_id == id) {
 106                         return device;
 107                 }
 108         }
 109         return NULL;
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // drive virtual machine
 114 // ----------------------------------------------------------------------------
 115
 116 void VM::reset()
 117 {
 118         // reset all devices
 119         for(DEVICE* device = first_device; device; device = device->next_device) {
 120                 device->reset();
 121         }
 122 }
 123
 124 void VM::run()
 125 {
 126         event->drive();
 127 }
 128
 129 double VM::get_frame_rate()
 130 {
 131         return event->get_frame_rate();
 132 }
 133
 134 // ----------------------------------------------------------------------------
 135 // debugger
 136 // ----------------------------------------------------------------------------
 137
 138 #ifdef USE_DEBUGGER
 139 DEVICE *VM::get_cpu(int index)
 140 {
 141         if(index == 0) {
 142                 return cpu;
 143         }
 144         return NULL;
 145 }
 146 #endif
 147
 148 // ----------------------------------------------------------------------------
 149 // draw screen
 150 // ----------------------------------------------------------------------------
 151
 152 void VM::draw_screen()
 153 {
 154         memory->draw_screen();
 155 }
 156
 157 // ----------------------------------------------------------------------------
 158 // soud manager
 159 // ----------------------------------------------------------------------------
 160
 161 void VM::initialize_sound(int rate, int samples)
 162 {
 163         // init sound manager
 164         event->initialize_sound(rate, samples);
 165 }
 166
 167 uint16_t* VM::create_sound(int* extra_frames)
 168 {
 169         return event->create_sound(extra_frames);
 170 }
 171
 172 int VM::get_sound_buffer_ptr()
 173 {
 174         return event->get_sound_buffer_ptr();
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // notify key
 179 // ----------------------------------------------------------------------------
 180
 181 void VM::key_down(int code, bool repeat)
 182 {
 183         if(code == 0x97 && !repeat) {
 184                 reset();
 185         }
 186 }
 187
 188 void VM::key_up(int code)
 189 {
 190 }
 191
 192 // ----------------------------------------------------------------------------
 193 // user interface
 194 // ----------------------------------------------------------------------------
 195
 196 void VM::play_tape(const _TCHAR* file_path)
 197 {
 198         drec->play_tape(file_path);
 199         drec->set_remote(true);
 200 }
 201
 202 void VM::rec_tape(const _TCHAR* file_path)
 203 {
 204         drec->rec_tape(file_path);
 205         drec->set_remote(true);
 206 }
 207
 208 void VM::close_tape()
 209 {
 210         emu->lock_vm();
 211         drec->close_tape();
 212         emu->unlock_vm();
 213         drec->set_remote(false);
 214 }
 215
 216 bool VM::is_tape_inserted()
 217 {
 218         return drec->is_tape_inserted();
 219 }
 220
 221 bool VM::is_tape_playing()
 222 {
 223         return drec->is_tape_playing();
 224 }
 225
 226 bool VM::is_tape_recording()
 227 {
 228         return drec->is_tape_recording();
 229 }
 230
 231 int VM::get_tape_position()
 232 {
 233         return drec->get_tape_position();
 234 }
 235
 236 void VM::load_binary(int drv, const _TCHAR* file_path)
 237 {
 238         if(drv == 0) {
 239                 memory->load_ram(file_path);
 240         }
 241 }
 242
 243 void VM::save_binary(int drv, const _TCHAR* file_path)
 244 {
 245         if(drv == 0) {
 246                 memory->save_ram(file_path);
 247         }
 248 }
 249
 250 bool VM::is_frame_skippable()
 251 {
 252         return event->is_frame_skippable();
 253 }
 254
 255 void VM::update_config()
 256 {
 257         for(DEVICE* device = first_device; device; device = device->next_device) {
 258                 device->update_config();
 259         }
 260 }
 261
 262 #define STATE_VERSION   1
 263
 264 void VM::save_state(FILEIO* state_fio)
 265 {
 266         state_fio->FputUint32(STATE_VERSION);
 267
 268         for(DEVICE* device = first_device; device; device = device->next_device) {
 269                 device->save_state(state_fio);
 270         }
 271 }
 272
 273 bool VM::load_state(FILEIO* state_fio)
 274 {
 275         if(state_fio->FgetUint32() != STATE_VERSION) {
 276                 return false;
 277         }
 278         for(DEVICE* device = first_device; device; device = device->next_device) {
 279                 if(!device->load_state(state_fio)) {
 280                         return false;
 281                 }
 282         }
 283         return true;
 284 }
 285