source/src/vm/pc98ha/note.cpp

   1 /*
   2         NEC PC-98LT Emulator 'ePC-98LT'
   3         NEC PC-98HA Emulator 'eHANDY98'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2008.08.14 -
   7
   8         [ note i/o ]
   9 */
  10
  11 #include "note.h"
  12 #include "../i8259.h"
  13
  14 void NOTE::initialize()
  15 {
  16         ch = 0;
  17         memset(regs, 0, sizeof(regs));
  18 }
  19
  20 void NOTE::write_io8(uint32_t addr, uint32_t data)
  21 {
  22         switch(addr & 0xffff) {
  23         case 0x810:
  24                 regs[ch & 0x0f] = data;
  25                 break;
  26         case 0x812:
  27                 ch = data;
  28                 break;
  29         case 0x4810:
  30                 // unknown
  31                 break;
  32         case 0x6e8e:
  33                 // modem control 1
  34                 break;
  35         case 0x7e8e:
  36                 // modem control 2
  37                 break;
  38         case 0x8810:
  39                 // power status
  40                 // bit5 = 1: unknown
  41                 // bit2 = 1: stanby
  42                 // bit0 = 1: power off
  43 //              d_pic->write_signal(SIG_I8259_IR5, data, 2);
  44                 break;
  45         case 0xc810:
  46                 // unknown
  47                 break;
  48         }
  49 }
  50
  51 uint32_t NOTE::read_io8(uint32_t addr)
  52 {
  53         switch(addr & 0xffff) {
  54         case 0x810:
  55                 return regs[ch & 0x0f];
  56         case 0x812:
  57                 return ch;
  58         case 0xf8e:
  59                 // pc card slot
  60                 return 0xe;     // 4 if no memcard
  61         case 0x5e8e:
  62                 // pc card slot ???
  63                 return 0x46;    // 0x40 if no memcard
  64         case 0x8810:
  65                 // bit7 = 1: docking station
  66                 // bit6 = 1: ac power supply
  67                 // bit4 = 1: alarm
  68                 // bit3 = 1: unknown
  69                 // bit2 = 1: li.battery low
  70                 // bit1 = 1: battery low
  71                 // bit0 = 1: power off
  72 #ifdef DOCKING_STATION
  73                 return 0xc0;
  74 #else
  75                 return 0x40;
  76 #endif
  77         }
  78         return 0xff;
  79 }
  80
  81 #define STATE_VERSION   1
  82
  83 #include "../../statesub.h"
  84
  85 void NOTE::decl_state()
  86 {
  87         enter_decl_state(STATE_VERSION);
  88
  89         DECL_STATE_ENTRY_UINT8(ch);
  90         DECL_STATE_ENTRY_1D_ARRAY(regs, sizeof(regs));
  91
  92         leave_decl_state();
  93 }
  94
  95 void NOTE::save_state(FILEIO* state_fio)
  96 {
  97         if(state_entry != NULL) {
  98                 state_entry->save_state(state_fio);
  99         }
 100 //      state_fio->FputUint32(STATE_VERSION);
 101 //      state_fio->FputInt32(this_device_id);
 102
 103 //      state_fio->FputUint8(ch);
 104 //      state_fio->Fwrite(regs, sizeof(regs), 1);
 105 }
 106
 107 bool NOTE::load_state(FILEIO* state_fio)
 108 {
 109         bool mb = false;
 110         if(state_entry != NULL) {
 111                 mb = state_entry->load_state(state_fio);
 112         }
 113         if(!mb) {
 114                 return false;
 115         }
 116 //      if(state_fio->FgetUint32() != STATE_VERSION) {
 117 //              return false;
 118 //      }
 119 //      if(state_fio->FgetInt32() != this_device_id) {
 120 //              return false;
 121 //      }
 122 //      ch = state_fio->FgetUint8();
 123 //      state_fio->Fread(regs, sizeof(regs), 1);
 124         return true;
 125 }
 126
 127 bool NOTE::process_state(FILEIO* state_fio, bool loading)
 128 {
 129         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 130                 return false;
 131         }
 132         if(!state_fio->StateCheckInt32(this_device_id)) {
 133                 return false;
 134         }
 135         state_fio->StateUint8(ch);
 136         state_fio->StateBuffer(regs, sizeof(regs), 1);
 137         return true;
 138 }