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version 1.6, 2004/03/30 07:12:03
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version 1.7, 2004/03/30 08:48:46
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Line 121 static REG8 IOINPCALL pcm86_ia460(UINT p
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Line 121 static REG8 IOINPCALL pcm86_ia460(UINT p
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| static REG8 IOINPCALL pcm86_ia466(UINT port) { |
static REG8 IOINPCALL pcm86_ia466(UINT port) { |
| |
|
| UINT32 nowclk; |
|
| UINT32 past; |
UINT32 past; |
| |
UINT32 cnt; |
| |
UINT32 stepclock; |
| REG8 ret; |
REG8 ret; |
| |
|
| // こんなんでお茶濁すんなら ちゃんと書き直しましょうね 漏れ… |
past = CPU_CLOCK + CPU_BASECLOCK - CPU_REMCLOCK; |
| if (!(pcm86.fifo & 0x80)) { |
past <<= 6; |
| ret = 0; |
past -= pcm86.lastclock; |
| } |
stepclock = pcm86.stepclock; |
| else { |
if (past >= stepclock) { |
| sound_sync(); |
cnt = past / stepclock; |
| nowclk = CPU_CLOCK + CPU_BASECLOCK - CPU_REMCLOCK; |
pcm86.lastclock += (cnt * stepclock); |
| nowclk <<= 6; |
past -= cnt * stepclock; |
| past = nowclk - pcm86.lastclock; |
if (pcm86.fifo & 0x80) { |
| if (past >= pcm86.stepclock) { |
sound_sync(); |
| RECALC_NOWCLKWAIT; |
RECALC_NOWCLKWAIT(cnt); |
| past = nowclk - pcm86.lastclock; |
|
| } |
} |
| ret = ((past << 1) >= pcm86.stepclock)?1:0; |
|
| } |
} |
| |
ret = ((past << 1) >= stepclock)?1:0; |
| if (pcm86.virbuf >= PCM86_LOGICALBUF) { // バッファフル |
if (pcm86.virbuf >= PCM86_LOGICALBUF) { // バッファフル |
| ret |= 0x80; |
ret |= 0x80; |
| } |
} |
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