source/src/vm/pv1000/joystick.cpp

   1 /*\r
   2         CASIO PV-1000 Emulator 'ePV-1000'\r
   3 \r
   4         Author : Takeda.Toshiya\r
   5         Date   : 2006.11.16 -\r
   6 \r
   7         [ joystick ]\r
   8 */\r
   9 \r
  10 #include "joystick.h"\r
  11 #include "../../fileio.h"\r
  12 \r
  13 void JOYSTICK::initialize()\r
  14 {\r
  15         key = emu->key_buffer();\r
  16         joy = emu->joy_buffer();\r
  17         \r
  18         // register event to interrupt\r
  19         register_frame_event(this);\r
  20 }\r
  21 \r
  22 void JOYSTICK::reset()\r
  23 {\r
  24         status = 0;\r
  25 }\r
  26 \r
  27 void JOYSTICK::write_io8(uint32 addr, uint32 data)\r
  28 {\r
  29         switch(addr & 0xff) {\r
  30         case 0xfc:\r
  31 //              status = data;\r
  32                 break;\r
  33         case 0xfd:\r
  34                 column = data;\r
  35                 status |= 2;\r
  36                 break;\r
  37         }\r
  38 //      emu->out_debug_log(_T("OUT\t%2x, %2x\n"), addr & 0xff, data);\r
  39 }\r
  40 \r
  41 uint32 JOYSTICK::read_io8(uint32 addr)\r
  42 {\r
  43         uint32 val = 0xff;\r
  44         \r
  45         switch(addr & 0xff) {\r
  46         case 0xfc:\r
  47                 val = status;\r
  48                 status &= ~1;\r
  49                 break;\r
  50         case 0xfd:\r
  51                 val = 0;\r
  52                 if(column & 1) {\r
  53                         if(joy[0] & 0x40) val |= 1;     // #1 select\r
  54                         if(joy[0] & 0x80) val |= 2;     // #1 start\r
  55                         if(joy[1] & 0x40) val |= 4;     // #2 select\r
  56                         if(joy[1] & 0x80) val |= 8;     // #2 start\r
  57                 }\r
  58                 if(column & 2) {\r
  59                         if(joy[0] & 0x02) val |= 1;     // #1 down\r
  60                         if(joy[0] & 0x08) val |= 2;     // #1 right\r
  61                         if(joy[1] & 0x02) val |= 4;     // #2 down\r
  62                         if(joy[1] & 0x08) val |= 8;     // #2 right\r
  63                 }\r
  64                 if(column & 4) {\r
  65                         if(joy[0] & 0x04) val |= 1;     // #1 left\r
  66                         if(joy[0] & 0x01) val |= 2;     // #1 up\r
  67                         if(joy[1] & 0x04) val |= 4;     // #2 left\r
  68                         if(joy[1] & 0x01) val |= 8;     // #2 up\r
  69                 }\r
  70                 if(column & 8) {\r
  71                         if(joy[0] & 0x10) val |= 1;     // #1 trig1\r
  72                         if(joy[0] & 0x20) val |= 2;     // #1 trig2\r
  73                         if(joy[1] & 0x10) val |= 4;     // #2 trig1\r
  74                         if(joy[1] & 0x20) val |= 8;     // #2 trig2\r
  75                 }\r
  76 //              status &= ~2;\r
  77                 break;\r
  78         }\r
  79 //      emu->out_debug_log(_T("IN\t%2x, %2x\n"), addr & 0xff, val);\r
  80         return val;\r
  81 }\r
  82 \r
  83 void JOYSTICK::event_frame()\r
  84 {\r
  85         status |= 1;\r
  86 }\r
  87 \r
  88 #define STATE_VERSION   1\r
  89 \r
  90 void JOYSTICK::save_state(FILEIO* state_fio)\r
  91 {\r
  92         state_fio->FputUint32(STATE_VERSION);\r
  93         state_fio->FputInt32(this_device_id);\r
  94         \r
  95         state_fio->FputUint8(column);\r
  96         state_fio->FputUint8(status);\r
  97 }\r
  98 \r
  99 bool JOYSTICK::load_state(FILEIO* state_fio)\r
 100 {\r
 101         if(state_fio->FgetUint32() != STATE_VERSION) {\r
 102                 return false;\r
 103         }\r
 104         if(state_fio->FgetInt32() != this_device_id) {\r
 105                 return false;\r
 106         }\r
 107         column = state_fio->FgetUint8();\r
 108         status = state_fio->FgetUint8();\r
 109         return true;\r
 110 }\r
 111 \r