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 namespace FMR50 {
  16
  17 void KEYBOARD::initialize()
  18 {
  19         key_buf = new FIFO(64);
  20         register_frame_event(this);
  21 }
  22
  23 void KEYBOARD::release()
  24 {
  25         key_buf->release();
  26         delete key_buf;
  27 }
  28
  29 void KEYBOARD::reset()
  30 {
  31         memset(table, 0, sizeof(table));
  32         key_buf->clear();
  33         kbstat = kbdata = kbint = kbmsk = 0;
  34 }
  35
  36 void KEYBOARD::write_io8(uint32_t addr, uint32_t data)
  37 {
  38         switch(addr) {
  39         case 0x600:
  40                 // data
  41 //              kbstat |= 2;
  42                 break;
  43         case 0x602:
  44                 // command
  45                 break;
  46         case 0x604:
  47                 kbmsk = data;
  48                 break;
  49         }
  50 }
  51
  52 uint32_t KEYBOARD::read_io8(uint32_t addr)
  53 {
  54         switch(addr) {
  55         case 0x600:
  56                 kbint &= ~1;
  57                 d_pic->write_signal(SIG_I8259_CHIP0 | SIG_I8259_IR1, 0, 0);
  58                 kbstat &= ~1;
  59                 return kbdata;
  60         case 0x602:
  61                 return kbstat;
  62         case 0x604:
  63                 return kbint | 0xfc;
  64         }
  65         return 0;
  66 }
  67
  68 void KEYBOARD::event_frame()
  69 {
  70         if(!(kbstat & 1) && !key_buf->empty()) {
  71                 kbstat |= 1;
  72                 kbdata = key_buf->read();
  73         }
  74         if((kbstat & 1) && (kbmsk & 1) && !(kbint & 1)) {
  75                 kbint |= 1;
  76                 d_pic->write_signal(SIG_I8259_CHIP0 | SIG_I8259_IR1, 1, 1);
  77         }
  78 //      kbstat &= ~2;
  79 }
  80
  81 void KEYBOARD::key_down(int code)
  82 {
  83 //      if(!table[code]) {
  84                 table[code] = 1;
  85                 if(code = key_table[code]) {
  86                         // $11:CTRL, $10:SHIFT
  87                         key_buf->write(0xa0 | (table[0x11] ? 8 : 0) | (table[0x10] ? 4 : 0));
  88                         key_buf->write(code);
  89                 }
  90 //      }
  91 }
  92
  93 void KEYBOARD::key_up(int code)
  94 {
  95 //      if(table[code]) {
  96                 table[code] = 0;
  97                 if(code = key_table[code]) {
  98                         key_buf->write(0xb0);
  99                         key_buf->write(code);
 100                 }
 101 //      }
 102 }
 103
 104 #define STATE_VERSION   1
 105
 106 bool KEYBOARD::process_state(FILEIO* state_fio, bool loading)
 107 {
 108         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 109                 return false;
 110         }
 111         if(!state_fio->StateCheckInt32(this_device_id)) {
 112                 return false;
 113         }
 114         if(!key_buf->process_state((void *)state_fio, loading)) {
 115                 return false;
 116         }
 117         state_fio->StateUint8(kbstat);
 118         state_fio->StateUint8(kbdata);
 119         state_fio->StateUint8(kbint);
 120         state_fio->StateUint8(kbmsk);
 121         state_fio->StateBuffer(table, sizeof(table), 1);
 122         return true;
 123 }
 124
 125 }