source/src/vm/pv1000/joystick.cpp

   1 /*
   2         CASIO PV-1000 Emulator 'ePV-1000'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.11.16 -
   6
   7         [ joystick ]
   8 */
   9
  10 #include "./joystick.h"
  11
  12 namespace PV1000 {
  13
  14 void JOYSTICK::initialize()
  15 {
  16         key = emu->get_key_buffer();
  17         joy = emu->get_joy_buffer();
  18
  19         // register event to interrupt
  20         register_frame_event(this);
  21 }
  22
  23 void JOYSTICK::reset()
  24 {
  25         status = 0;
  26 }
  27
  28 void JOYSTICK::write_io8(uint32_t addr, uint32_t data)
  29 {
  30         switch(addr & 0xff) {
  31         case 0xfc:
  32 //              status = data;
  33                 break;
  34         case 0xfd:
  35                 column = data;
  36                 status |= 2;
  37                 break;
  38         }
  39 //      this->out_debug_log(_T("OUT\t%2x, %2x\n"), addr & 0xff, data);
  40 }
  41
  42 uint32_t JOYSTICK::read_io8(uint32_t addr)
  43 {
  44         uint32_t val = 0xff;
  45
  46         switch(addr & 0xff) {
  47         case 0xfc:
  48                 val = status;
  49                 status &= ~1;
  50                 break;
  51         case 0xfd:
  52                 val = 0;
  53                 if(column & 1) {
  54                         if(joy[0] & 0x40) val |= 1;     // #1 select
  55                         if(joy[0] & 0x80) val |= 2;     // #1 start
  56                         if(joy[1] & 0x40) val |= 4;     // #2 select
  57                         if(joy[1] & 0x80) val |= 8;     // #2 start
  58                 }
  59                 if(column & 2) {
  60                         if(joy[0] & 0x02) val |= 1;     // #1 down
  61                         if(joy[0] & 0x08) val |= 2;     // #1 right
  62                         if(joy[1] & 0x02) val |= 4;     // #2 down
  63                         if(joy[1] & 0x08) val |= 8;     // #2 right
  64                 }
  65                 if(column & 4) {
  66                         if(joy[0] & 0x04) val |= 1;     // #1 left
  67                         if(joy[0] & 0x01) val |= 2;     // #1 up
  68                         if(joy[1] & 0x04) val |= 4;     // #2 left
  69                         if(joy[1] & 0x01) val |= 8;     // #2 up
  70                 }
  71                 if(column & 8) {
  72                         if(joy[0] & 0x10) val |= 1;     // #1 trig1
  73                         if(joy[0] & 0x20) val |= 2;     // #1 trig2
  74                         if(joy[1] & 0x10) val |= 4;     // #2 trig1
  75                         if(joy[1] & 0x20) val |= 8;     // #2 trig2
  76                 }
  77 //              status &= ~2;
  78                 break;
  79         }
  80 //      this->out_debug_log(_T("IN\t%2x, %2x\n"), addr & 0xff, val);
  81         return val;
  82 }
  83
  84 void JOYSTICK::event_frame()
  85 {
  86         status |= 1;
  87 }
  88
  89 #define STATE_VERSION   1
  90
  91 bool JOYSTICK::process_state(FILEIO* state_fio, bool loading)
  92 {
  93         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
  94                 return false;
  95         }
  96         if(!state_fio->StateCheckInt32(this_device_id)) {
  97                 return false;
  98         }
  99         state_fio->StateValue(column);
 100         state_fio->StateValue(status);
 101         return true;
 102 }
 103
 104 }