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Rockboy - gameboy emulation for rockbox, based on gnuboy. Still a bit early, but already playable on iRiver H1xx and the simulators. The archos recorder version is currently rather slow...

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6104 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-03-02 23:49:38 +00:00
parent 48dad47df9
commit 384de10246
56 changed files with 9225 additions and 1 deletions
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135
apps/plugins/rockboy/rtc.c Normal file
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#include "rockmacros.h"
#include <stdio.h>
#include "defs.h"
#include "mem.h"
#include "rtc.h"
#include "rc.h"
struct rtc rtc;
static int syncrtc = 1;
rcvar_t rtc_exports[] =
{
RCV_BOOL("syncrtc", &syncrtc),
RCV_END
};
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()
{
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)
{
(void)fd; // stop compiler complaining
// TODO
// fprintf(f, "%d %d %d %02d %02d %02d %02d\n%d\n",
// rtc.carry, rtc.stop, rtc.d, rtc.h, rtc.m, rtc.s, rtc.t,
// time(0));
}
void rtc_load_internal(int fd)
{
//int rt = 0;
(void)fd; // stop compiler complaining
// TODO
/* fscanf(
f, "%d %d %d %02d %02d %02d %02d\n%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 (rt) rt = (time(0) - rt) * 60;
if (syncrtc) while (rt-- > 0) rtc_tick(); */
}