source/src/vm/fmr50/keyboard.cpp

   1 /*
   2         FUJITSU FMR-50 Emulator 'eFMR-50'
   3         FUJITSU FMR-60 Emulator 'eFMR-60'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2008.05.01 -
   7
   8         [ keyboard ]
   9 */
  10
  11 #include "keyboard.h"
  12 #include "../i8259.h"
  13 #include "../../fifo.h"
  14
  15 void KEYBOARD::initialize()
  16 {
  17         key_buf = new FIFO(64);
  18         register_frame_event(this);
  19 }
  20
  21 void KEYBOARD::release()
  22 {
  23         key_buf->release();
  24         delete key_buf;
  25 }
  26
  27 void KEYBOARD::reset()
  28 {
  29         memset(table, 0, sizeof(table));
  30         key_buf->clear();
  31         kbstat = kbdata = kbint = kbmsk = 0;
  32 }
  33
  34 void KEYBOARD::write_io8(uint32_t addr, uint32_t data)
  35 {
  36         switch(addr) {
  37         case 0x600:
  38                 // data
  39 //              kbstat |= 2;
  40                 break;
  41         case 0x602:
  42                 // command
  43                 break;
  44         case 0x604:
  45                 kbmsk = data;
  46                 break;
  47         }
  48 }
  49
  50 uint32_t KEYBOARD::read_io8(uint32_t addr)
  51 {
  52         switch(addr) {
  53         case 0x600:
  54                 kbint &= ~1;
  55                 d_pic->write_signal(SIG_I8259_CHIP0 | SIG_I8259_IR1, 0, 0);
  56                 kbstat &= ~1;
  57                 return kbdata;
  58         case 0x602:
  59                 return kbstat;
  60         case 0x604:
  61                 return kbint | 0xfc;
  62         }
  63         return 0;
  64 }
  65
  66 void KEYBOARD::event_frame()
  67 {
  68         if(!(kbstat & 1) && !key_buf->empty()) {
  69                 kbstat |= 1;
  70                 kbdata = key_buf->read();
  71         }
  72         if((kbstat & 1) && (kbmsk & 1) && !(kbint & 1)) {
  73                 kbint |= 1;
  74                 d_pic->write_signal(SIG_I8259_CHIP0 | SIG_I8259_IR1, 1, 1);
  75         }
  76 //      kbstat &= ~2;
  77 }
  78
  79 void KEYBOARD::key_down(int code)
  80 {
  81 //      if(!table[code]) {
  82                 table[code] = 1;
  83                 if(code = key_table[code]) {
  84                         // $11:CTRL, $10:SHIFT
  85                         key_buf->write(0xa0 | (table[0x11] ? 8 : 0) | (table[0x10] ? 4 : 0));
  86                         key_buf->write(code);
  87                 }
  88 //      }
  89 }
  90
  91 void KEYBOARD::key_up(int code)
  92 {
  93 //      if(table[code]) {
  94                 table[code] = 0;
  95                 if(code = key_table[code]) {
  96                         key_buf->write(0xb0);
  97                         key_buf->write(code);
  98                 }
  99 //      }
 100 }
 101
 102 #define STATE_VERSION   1
 103
 104 void KEYBOARD::save_state(FILEIO* state_fio)
 105 {
 106         state_fio->FputUint32(STATE_VERSION);
 107         state_fio->FputInt32(this_device_id);
 108
 109         key_buf->save_state((void *)state_fio);
 110         state_fio->FputUint8(kbstat);
 111         state_fio->FputUint8(kbdata);
 112         state_fio->FputUint8(kbint);
 113         state_fio->FputUint8(kbmsk);
 114         state_fio->Fwrite(table, sizeof(table), 1);
 115 }
 116
 117 bool KEYBOARD::load_state(FILEIO* state_fio)
 118 {
 119         if(state_fio->FgetUint32() != STATE_VERSION) {
 120                 return false;
 121         }
 122         if(state_fio->FgetInt32() != this_device_id) {
 123                 return false;
 124         }
 125         if(!key_buf->load_state((void *)state_fio)) {
 126                 return false;
 127         }
 128         kbstat = state_fio->FgetUint8();
 129         kbdata = state_fio->FgetUint8();
 130         kbint = state_fio->FgetUint8();
 131         kbmsk = state_fio->FgetUint8();
 132         state_fio->Fread(table, sizeof(table), 1);
 133         return true;
 134 }
 135