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 bool KEYBOARD::process_state(FILEIO* state_fio, bool loading)
 105 {
 106         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 107                 return false;
 108         }
 109         if(!state_fio->StateCheckInt32(this_device_id)) {
 110                 return false;
 111         }
 112         if(!key_buf->process_state((void *)state_fio, loading)) {
 113                 return false;
 114         }
 115         state_fio->StateUint8(kbstat);
 116         state_fio->StateUint8(kbdata);
 117         state_fio->StateUint8(kbint);
 118         state_fio->StateUint8(kbmsk);
 119         state_fio->StateBuffer(table, sizeof(table), 1);
 120         return true;
 121 }