mirror of
https://github.com/86Box/86Box.git
synced 2026-02-24 20:35:32 -07:00
34 lines
772 B
C
34 lines
772 B
C
|
|
/* The TC8521 is a 4-bit RTC, so each memory location can only hold a single
|
|
* BCD digit. Hence everything has 'ones' and 'tens' digits. */
|
|
enum TC8521_ADDR
|
|
{
|
|
/* Page 0 registers */
|
|
TC8521_SECOND1,
|
|
TC8521_SECOND10,
|
|
TC8521_MINUTE1,
|
|
TC8521_MINUTE10,
|
|
TC8521_HOUR1,
|
|
TC8521_HOUR10,
|
|
TC8521_WEEKDAY,
|
|
TC8521_DAY1,
|
|
TC8521_DAY10,
|
|
TC8521_MONTH1,
|
|
TC8521_MONTH10,
|
|
TC8521_YEAR1,
|
|
TC8521_YEAR10,
|
|
TC8521_PAGE, /* PAGE register */
|
|
TC8521_TEST, /* TEST register */
|
|
TC8521_RESET, /* RESET register */
|
|
/* Page 1 registers */
|
|
TC8521_24HR = 0x1A,
|
|
TC8521_LEAPYEAR = 0x1B
|
|
};
|
|
|
|
|
|
void tc8521_tick();
|
|
void tc8521_update(uint8_t *nvrram, int reg);
|
|
void tc8521_get(uint8_t *nvrram);
|
|
void tc8521_internal_set_nvrram(uint8_t *nvrram);
|
|
void tc8521_internal_sync(uint8_t *nvrram);
|