source/src/vm/pasopia/keyboard.cpp

   1 /*
   2         TOSHIBA PASOPIA Emulator 'EmuPIA'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.12.28 -
   6
   7         [ keyboard ]
   8 */
   9
  10 #include "keyboard.h"
  11 #include "../z80pio.h"
  12
  13 static const int key_map[12][8] = {
  14         { 0x12, 0x10, 0x14, 0x00, 0x11, 0x15, 0x00, 0x00 },
  15         { 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67 },
  16         { 0x68, 0x69, 0x6d, 0x28, 0x26, 0x24, 0x6e, 0x0d },
  17         { 0x27, 0x1b, 0x2e, 0x1b, 0x00, 0x00, 0x00, 0x00 },
  18         { 0x7a, 0xe5, 0x78, 0x79, 0x2d, 0x25, 0x00, 0x20 },
  19         { 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77 },
  20         { 0x31, 0x30, 0x34, 0x52, 0x59, 0xe2, 0xde, 0xdc },
  21         { 0x32, 0x33, 0x38, 0x54, 0x55, 0x37, 0xc0, 0xdb },
  22         { 0xbd, 0x35, 0x36, 0x46, 0x48, 0x39, 0xba, 0xdd },
  23         { 0x51, 0x57, 0x45, 0x47, 0x4a, 0x49, 0x4f, 0x50 },
  24         { 0x41, 0x53, 0x44, 0x56, 0x4e, 0x4b, 0x4c, 0xbb },
  25         { 0x5a, 0x58, 0x43, 0x42, 0x4d, 0xbc, 0xbe, 0xbf }
  26 };
  27
  28 void KEYBOARD::initialize()
  29 {
  30         key_stat = emu->get_key_buffer();
  31         register_frame_event(this);
  32 }
  33
  34 void KEYBOARD::write_signal(int id, uint32_t data, uint32_t mask)
  35 {
  36         if(id == SIG_KEYBOARD_Z80PIO_A) {
  37                 // from Z-80PIO Port A
  38                 sel = data & mask;
  39                 create_key();
  40         }
  41 }
  42
  43 void KEYBOARD::event_frame()
  44 {
  45         create_key();
  46 }
  47
  48 void KEYBOARD::create_key()
  49 {
  50         // update port-b
  51         uint8_t keys[256];
  52         memcpy(keys, key_stat, sizeof(keys));
  53
  54         keys[0] = 0;
  55         // backspace -> del
  56         if(keys[0x08]) {
  57                 keys[0x2e] = 0x80;
  58         }
  59         uint8_t val = 0;
  60         for(int i = 0; i < 3; i++) {
  61                 if(sel & (0x10 << i)) {
  62                         for(int j = 0; j < 4; j++) {
  63                                 if(sel & (1 << j)) {
  64                                         for(int k = 0; k < 8; k++) {
  65                                                 val |= keys[key_map[i * 4 + j][k]] ? (1 << k) : 0;
  66                                         }
  67                                 }
  68                         }
  69                 }
  70         }
  71         // to Z-80PIO Port B
  72         d_pio->write_signal(SIG_Z80PIO_PORT_B, ~val, 0xff);
  73 }
  74
  75 #define STATE_VERSION   1
  76
  77 bool KEYBOARD::process_state(FILEIO* state_fio, bool loading)
  78 {
  79         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
  80                 return false;
  81         }
  82         if(!state_fio->StateCheckInt32(this_device_id)) {
  83                 return false;
  84         }
  85         state_fio->StateUint8(sel);
  86         return true;
  87 }