source/src/vm/fmr30/system.cpp

   1 /*
   2         FUJITSU FMR-30 Emulator 'eFMR-30'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.12.31 -
   6
   7         [ system ]
   8 */
   9
  10 #include "system.h"
  11
  12 void SYSTEM::initialize()
  13 {
  14         arr = nmistat = 0;
  15         nmimask = 0xf0;
  16 }
  17
  18 void SYSTEM::write_io8(uint32_t addr, uint32_t data)
  19 {
  20         switch(addr & 0xffff) {
  21         case 0x46:
  22                 nmistat &= ~data;
  23                 break;
  24         case 0x47:
  25                 nmimask = data;
  26                 break;
  27         case 0xff00:
  28                 arr = data;
  29                 break;
  30         }
  31 }
  32
  33 uint32_t SYSTEM::read_io8(uint32_t addr)
  34 {
  35         switch(addr & 0xffff) {
  36         case 0x18:
  37                 // modem:       no
  38                 // scsi:        yes
  39                 // fd23:        3.5inch
  40                 // ext-ram:     yes (1mb)
  41                 // co-pro       no
  42                 return 0x24;
  43         case 0x20:
  44         case 0x21:
  45                 // isrr high/low
  46                 return 0;
  47         case 0x46:
  48                 return nmistat;
  49         case 0x47:
  50                 return nmimask;
  51         case 0xff00:
  52                 return arr;
  53         }
  54         return 0xff;
  55 }
  56
  57 #define STATE_VERSION   1
  58
  59 #include "../../statesub.h"
  60
  61 void SYSTEM::decl_state()
  62 {
  63         enter_decl_state(STATE_VERSION);
  64
  65         DECL_STATE_ENTRY_UINT8(arr);
  66         DECL_STATE_ENTRY_UINT8(nmistat);
  67         DECL_STATE_ENTRY_UINT8(nmimask);
  68
  69         leave_decl_state();
  70 }
  71
  72 void SYSTEM::save_state(FILEIO* state_fio)
  73 {
  74         if(state_entry != NULL) {
  75                 state_entry->save_state(state_fio);
  76         }
  77
  78 //      state_fio->FputUint32(STATE_VERSION);
  79 //      state_fio->FputInt32(this_device_id);
  80
  81 //      state_fio->FputUint8(arr);
  82 //      state_fio->FputUint8(nmistat);
  83 //      state_fio->FputUint8(nmimask);
  84 }
  85
  86 bool SYSTEM::load_state(FILEIO* state_fio)
  87 {
  88         bool mb = false;
  89         if(state_entry != NULL) {
  90                 mb = state_entry->load_state(state_fio);
  91         }
  92         if(!mb) {
  93                 return false;
  94         }
  95
  96 //      if(state_fio->FgetUint32() != STATE_VERSION) {
  97 //              return false;
  98 //      }
  99 //      if(state_fio->FgetInt32() != this_device_id) {
 100 //              return false;
 101 //      }
 102 //      arr = state_fio->FgetUint8();
 103 //      nmistat = state_fio->FgetUint8();
 104 //      nmimask = state_fio->FgetUint8();
 105         return true;
 106 }
 107
 108 bool SYSTEM::process_state(FILEIO* state_fio, bool loading)
 109 {
 110         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 111                 return false;
 112         }
 113         if(!state_fio->StateCheckInt32(this_device_id)) {
 114                 return false;
 115         }
 116         state_fio->StateUint8(arr);
 117         state_fio->StateUint8(nmistat);
 118         state_fio->StateUint8(nmimask);
 119         return true;
 120 }