source/src/vm/pasopia7/floppy.cpp

   1 /*
   2         TOSHIBA PASOPIA 7 Emulator 'EmuPIA7'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.09.20 -
   6
   7         [ floppy ]
   8 */
   9
  10 #include "floppy.h"
  11 #include "../upd765a.h"
  12
  13 void FLOPPY::initialize()
  14 {
  15         intr = false;
  16 }
  17
  18 void FLOPPY::write_io8(uint32_t addr, uint32_t data)
  19 {
  20         switch(addr & 0xff) {
  21         case 0xe0:
  22                 // tc off
  23                 d_fdc->write_signal(SIG_UPD765A_TC, 0, 1);
  24                 break;
  25         case 0xe2:
  26                 // tc on
  27                 d_fdc->write_signal(SIG_UPD765A_TC, 1, 1);
  28                 break;
  29         case 0xe6:
  30                 // fdc reset
  31                 if(data & 0x80) {
  32                         d_fdc->reset();
  33                 }
  34                 // motor on/off
  35                 d_fdc->write_signal(SIG_UPD765A_MOTOR, data, 0x40);
  36                 break;
  37         }
  38 }
  39
  40 uint32_t FLOPPY::read_io8(uint32_t addr)
  41 {
  42         switch(addr & 0xff) {
  43         case 0xe6:
  44                 // fdc intr
  45                 return intr ? 0x80 : 0;
  46         }
  47         return 0xff;
  48 }
  49
  50 void FLOPPY::write_signal(int id, uint32_t data, uint32_t mask)
  51 {
  52         if(id == SIG_FLOPPY_INTR) {
  53                 intr = ((data & mask) != 0);
  54         }
  55 }
  56
  57 #define STATE_VERSION   1
  58
  59 #include "../../statesub.h"
  60
  61 void FLOPPY::decl_state()
  62 {
  63         enter_decl_state(STATE_VERSION);
  64
  65         DECL_STATE_ENTRY_BOOL(intr);
  66
  67         leave_decl_state();
  68 }
  69
  70 void FLOPPY::save_state(FILEIO* state_fio)
  71 {
  72         if(state_entry != NULL) {
  73                 state_entry->save_state(state_fio);
  74         }
  75 //      state_fio->FputUint32(STATE_VERSION);
  76 //      state_fio->FputInt32(this_device_id);
  77
  78 //      state_fio->FputBool(intr);
  79 }
  80
  81 bool FLOPPY::load_state(FILEIO* state_fio)
  82 {
  83         bool mb = false;
  84         if(state_entry != NULL) {
  85                 mb = state_entry->load_state(state_fio);
  86         }
  87         if(!mb) return false;
  88 //      if(state_fio->FgetUint32() != STATE_VERSION) {
  89 //              return false;
  90 //      }
  91 //      if(state_fio->FgetInt32() != this_device_id) {
  92 //              return false;
  93 //      }
  94 //      intr = state_fio->FgetBool();
  95         return true;
  96 }
  97
  98 bool FLOPPY::process_state(FILEIO* state_fio, bool loading)
  99 {
 100         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 101                 return false;
 102         }
 103         if(!state_fio->StateCheckInt32(this_device_id)) {
 104                 return false;
 105         }
 106         state_fio->StateBool(intr);
 107         return true;
 108 }