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ABC turbo

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@553 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-16 12:50:33 +00:00
parent 916363c86d
commit f0f0d2df76
15 changed files with 222 additions and 155 deletions
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23
platform/common/emu.c
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@ -1026,6 +1026,27 @@ void emu_RunEventsPico(unsigned int events)
}
}
void emu_DoTurbo(int *pad, int acts)
{
static int turbo_pad = 0;
static unsigned char turbo_cnt[3] = { 0, 0, 0 };
int inc = currentConfig.turbo_rate * 2;
if (acts & 0x1000) {
turbo_cnt[0] += inc;
if (turbo_cnt[0] >= 60)
turbo_pad ^= 0x10, turbo_cnt[0] = 0;
}
if (acts & 0x2000) {
turbo_cnt[1] += inc;
if (turbo_cnt[1] >= 60)
turbo_pad ^= 0x20, turbo_cnt[1] = 0;
}
if (acts & 0x4000) {
turbo_cnt[2] += inc;
if (turbo_cnt[2] >= 60)
turbo_pad ^= 0x40, turbo_cnt[2] = 0;
}
*pad |= turbo_pad & (acts >> 8);
}