source/src/vm/fmgen/fmtimer.h

   1 // ---------------------------------------------------------------------------\r
   2 //      FM sound generator common timer module\r
   3 //      Copyright (C) cisc 1998, 2000.\r
   4 // ---------------------------------------------------------------------------\r
   5 //      $Id: fmtimer.h,v 1.2 2003/04/22 13:12:53 cisc Exp $\r
   6 \r
   7 #ifndef FM_TIMER_H\r
   8 #define FM_TIMER_H\r
   9 \r
  10 #include "types.h"\r
  11 \r
  12 // ---------------------------------------------------------------------------\r
  13 \r
  14 namespace FM\r
  15 {\r
  16         class Timer\r
  17         {\r
  18         public:\r
  19                 void    Reset();\r
  20                 bool    Count(int32 clock);\r
  21                 int32   GetNextEvent();\r
  22         \r
  23         protected:\r
  24                 virtual void SetStatus(uint bit) = 0;\r
  25                 virtual void ResetStatus(uint bit) = 0;\r
  26 \r
  27                 void    SetTimerPrescaler(int32 p);\r
  28                 void    SetTimerA(uint addr, uint data);\r
  29                 void    SetTimerB(uint data);\r
  30                 void    SetTimerControl(uint data);\r
  31                 \r
  32                 void SaveState(void *f);\r
  33                 bool LoadState(void *f);\r
  34                 \r
  35                 uint8   status;\r
  36                 uint8   regtc;\r
  37         \r
  38         private:\r
  39                 virtual void TimerA() {}\r
  40                 uint8   regta[2];\r
  41                 \r
  42                 int32   timera, timera_count;\r
  43                 int32   timerb, timerb_count;\r
  44                 int32   prescaler;\r
  45         };\r
  46 \r
  47 // ---------------------------------------------------------------------------\r
  48 //      \8f\89\8aú\89»\r
  49 //\r
  50 inline void Timer::Reset()\r
  51 {\r
  52         timera_count = 0;\r
  53         timerb_count = 0;\r
  54 }\r
  55 \r
  56 } // namespace FM\r
  57 \r
  58 #endif // FM_TIMER_H\r