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#include "rockmacros.h"
#include <stdio.h>
#include "defs.h"
#include "mem.h"
#include "rtc-gb.h"
struct rtc rtc;
void rtc_latch(byte b)
{
if ((rtc.latch ^ b) & b & 1)
{
rtc.regs[0] = rtc.s;
rtc.regs[1] = rtc.m;
rtc.regs[2] = rtc.h;
rtc.regs[3] = rtc.d;
rtc.regs[4] = (rtc.d>>9) | (rtc.stop<<6) | (rtc.carry<<7);
rtc.regs[5] = 0xff;
rtc.regs[6] = 0xff;
rtc.regs[7] = 0xff;
}
rtc.latch = b;
}
void rtc_write(byte b)
{
/* printf("write %02X: %02X (%d)\n", rtc.sel, b, b); */
if (!(rtc.sel & 8)) return;
switch (rtc.sel & 7)
{
case 0:
rtc.s = rtc.regs[0] = b;
while (rtc.s >= 60) rtc.s -= 60;
break;
case 1:
rtc.m = rtc.regs[1] = b;
while (rtc.m >= 60) rtc.m -= 60;
break;
case 2:
rtc.h = rtc.regs[2] = b;
while (rtc.h >= 24) rtc.h -= 24;
break;
case 3:
rtc.regs[3] = b;
rtc.d = (rtc.d & 0x100) | b;
break;
case 4:
rtc.regs[4] = b;
rtc.d = (rtc.d & 0xff) | ((b&1)<<9);
rtc.stop = (b>>6)&1;
rtc.carry = (b>>7)&1;
break;
}
}
void rtc_tick(void)
{
if (rtc.stop) return;
if (++rtc.t == 60)
{
if (++rtc.s == 60)
{
if (++rtc.m == 60)
{
if (++rtc.h == 24)
{
if (++rtc.d == 365)
{
rtc.d = 0;
rtc.carry = 1;
}
rtc.h = 0;
}
rtc.m = 0;
}
rtc.s = 0;
}
rtc.t = 0;
}
}
void rtc_save_internal(int fd)
{
int rt = 0;
#if CONFIG_RTC
rt = rb->mktime(rb->get_time());
#endif
fdprintf(fd, "%d %d %d %d %d %d %d %d\n", rtc.carry, rtc.stop, rtc.d, rtc.h,
rtc.m, rtc.s, rtc.t, rt);
}
void rtc_load_internal(int fd)
{
int rt = 0;
char buf[32];
rb->read_line(fd, buf, sizeof(buf));
sscanf(buf, "%d %d %d %d %d %d %d %d\n", &rtc.carry, &rtc.stop, &rtc.d,
&rtc.h, &rtc.m, &rtc.s, &rtc.t, &rt);
while (rtc.t >= 60) rtc.t -= 60;
while (rtc.s >= 60) rtc.s -= 60;
while (rtc.m >= 60) rtc.m -= 60;
while (rtc.h >= 24) rtc.h -= 24;
while (rtc.d >= 365) rtc.d -= 365;
rtc.stop &= 1;
rtc.carry &= 1;
#if CONFIG_RTC
if (rt) rt = (rb->mktime(rb->get_time()) - rt) * 60;
#endif
while (rt-- > 0) rtc_tick();
}
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