source/src/vm/hc40/hc40.cpp

   1 /*
   2         EPSON HC-40 Emulator 'eHC-40'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.02.23 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "hc40.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../datarec.h"
  17 #include "../tf20.h"
  18 #include "../z80.h"
  19
  20 #ifdef USE_DEBUGGER
  21 #include "../debugger.h"
  22 #endif
  23
  24 #include "io.h"
  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         beep = new BEEP(this, emu);
  39         drec = new DATAREC(this, emu);
  40         tf20 = new TF20(this, emu);
  41         cpu = new Z80(this, emu);
  42
  43         io = new IO(this, emu);
  44         memory = new MEMORY(this, emu);
  45
  46         // set contexts
  47         event->set_context_cpu(cpu);
  48         event->set_context_sound(beep);
  49
  50         drec->set_context_out(io, SIG_IO_DREC, 1);
  51         tf20->set_context_sio(io, SIG_IO_ART);
  52
  53         io->set_context_cpu(cpu);
  54         io->set_context_mem(memory, memory->get_ram());
  55         io->set_context_tf20(tf20);
  56         io->set_context_beep(beep);
  57         io->set_context_drec(drec);
  58
  59         // cpu bus
  60         cpu->set_context_mem(memory);
  61         cpu->set_context_io(io);
  62         cpu->set_context_intr(io);
  63 #ifdef USE_DEBUGGER
  64         cpu->set_context_debugger(new DEBUGGER(this, emu));
  65 #endif
  66
  67         // initialize all devices
  68         for(DEVICE* device = first_device; device; device = device->next_device) {
  69                 device->initialize();
  70         }
  71 }
  72
  73 VM::~VM()
  74 {
  75         // delete all devices
  76         for(DEVICE* device = first_device; device;) {
  77                 DEVICE *next_device = device->next_device;
  78                 device->release();
  79                 delete device;
  80                 device = next_device;
  81         }
  82 }
  83
  84 DEVICE* VM::get_device(int id)
  85 {
  86         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 if(device->this_device_id == id) {
  88                         return device;
  89                 }
  90         }
  91         return NULL;
  92 }
  93
  94 // ----------------------------------------------------------------------------
  95 // drive virtual machine
  96 // ----------------------------------------------------------------------------
  97
  98 void VM::reset()
  99 {
 100         // reset all devices
 101         for(DEVICE* device = first_device; device; device = device->next_device) {
 102                 device->reset();
 103         }
 104 }
 105
 106 void VM::special_reset()
 107 {
 108         // system reset
 109         for(DEVICE* device = first_device; device; device = device->next_device) {
 110                 device->reset();
 111         }
 112         io->sysreset();
 113 }
 114
 115 void VM::run()
 116 {
 117         event->drive();
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // debugger
 122 // ----------------------------------------------------------------------------
 123
 124 #ifdef USE_DEBUGGER
 125 DEVICE *VM::get_cpu(int index)
 126 {
 127         if(index == 0) {
 128                 return cpu;
 129         }
 130         return NULL;
 131 }
 132 #endif
 133
 134 // ----------------------------------------------------------------------------
 135 // draw screen
 136 // ----------------------------------------------------------------------------
 137
 138 void VM::draw_screen()
 139 {
 140         io->draw_screen();
 141 }
 142
 143 int VM::access_lamp()
 144 {
 145         uint32 status = tf20->read_signal(0);
 146         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 147 }
 148
 149 // ----------------------------------------------------------------------------
 150 // soud manager
 151 // ----------------------------------------------------------------------------
 152
 153 void VM::initialize_sound(int rate, int samples)
 154 {
 155         // init sound manager
 156         event->initialize_sound(rate, samples);
 157
 158         // init sound gen
 159         beep->init(rate, 1000, 8000);
 160 }
 161
 162 uint16* VM::create_sound(int* extra_frames)
 163 {
 164         return event->create_sound(extra_frames);
 165 }
 166
 167 int VM::sound_buffer_ptr()
 168 {
 169         return event->sound_buffer_ptr();
 170 }
 171
 172 // ----------------------------------------------------------------------------
 173 // notify key
 174 // ----------------------------------------------------------------------------
 175
 176 void VM::key_down(int code, bool repeat)
 177 {
 178         io->key_down(code);
 179 }
 180
 181 void VM::key_up(int code)
 182 {
 183         io->key_up(code);
 184 }
 185
 186 // ----------------------------------------------------------------------------
 187 // user interface
 188 // ----------------------------------------------------------------------------
 189
 190 void VM::open_disk(int drv, _TCHAR* file_path, int bank)
 191 {
 192         tf20->open_disk(drv, file_path, bank);
 193 }
 194
 195 void VM::close_disk(int drv)
 196 {
 197         tf20->close_disk(drv);
 198 }
 199
 200 bool VM::disk_inserted(int drv)
 201 {
 202         return tf20->disk_inserted(drv);
 203 }
 204
 205 void VM::play_tape(_TCHAR* file_path)
 206 {
 207         drec->play_tape(file_path);
 208 }
 209
 210 void VM::rec_tape(_TCHAR* file_path)
 211 {
 212         drec->rec_tape(file_path);
 213 }
 214
 215 void VM::close_tape()
 216 {
 217         drec->close_tape();
 218 }
 219
 220 bool VM::tape_inserted()
 221 {
 222         return drec->tape_inserted();
 223 }
 224
 225 bool VM::now_skip()
 226 {
 227         return event->now_skip();
 228 }
 229
 230 void VM::update_config()
 231 {
 232         for(DEVICE* device = first_device; device; device = device->next_device) {
 233                 device->update_config();
 234         }
 235 }
 236