#include "../copyright"

#ifndef _srtc_h_
#define _srtc_h_

#include <time.h>

#define MAX_RTC_INDEX       0xC

#define MODE_READ           0
#define MODE_LOAD_RTC       1
#define MODE_COMMAND        2
#define MODE_COMMAND_DONE   3

#define COMMAND_LOAD_RTC    0
#define COMMAND_CLEAR_RTC   4


/***   The format of the rtc_data structure is:

Index Description     Range (nibble)
----- --------------  ---------------------------------------

  0   Seconds low     0-9
  1   Seconds high    0-5

  2   Minutes low     0-9
  3   Minutes high    0-5

  4   Hour low        0-9
  5   Hour high       0-2

  6   Day low         0-9
  7   Day high        0-3

  8   Month           1-C (0xC is December, 12th month)

  9   Year ones       0-9
  A   Year tens       0-9
  B   Year High       9-B  (9=19xx, A=20xx, B=21xx)

  C   Day of week     0-6  (0=Sunday, 1=Monday,...,6=Saturday)

***/

typedef struct
{
   bool     needs_init;
   bool     count_enable;             // Does RTC mark time or is it frozen
   uint8_t  data [MAX_RTC_INDEX + 1];
   int8_t   index;
   uint8_t  mode;
   time_t   system_timestamp;         // Of latest RTC load time
   uint32_t pad;
} SRTC_DATA;

extern SRTC_DATA           rtc;

void    S9xUpdateSrtcTime();
void    S9xSetSRTC(uint8_t data, uint16_t Address);
uint8_t S9xGetSRTC(uint16_t Address);
void    S9xSRTCPreSaveState();
void    S9xSRTCPostLoadState();
void    S9xResetSRTC();
void    S9xHardResetSRTC();

#define SRTC_SRAM_PAD (4 + 8 + 1 + MAX_RTC_INDEX)

#endif   // _srtc_h