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@@ -89,10 +89,10 @@ void pcd_pcm_sync(unsigned int to)
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addr = ch->addr;
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inc = ch->regs[2] + (ch->regs[3]<<8);
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- mul_l = ((int)ch->regs[0] * (ch->regs[1] & 0xf)) >> (5+1);
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- mul_r = ((int)ch->regs[0] * (ch->regs[1] >> 4)) >> (5+1);
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+ mul_l = (int)ch->regs[0] * (ch->regs[1] & 0xf);
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+ mul_r = (int)ch->regs[0] * (ch->regs[1] >> 4);
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- for (s = 0; s < steps; s++, addr = (addr + inc) & 0x7FFFFFF)
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+ for (s = 0; s < steps; s++, addr = (addr + inc) & 0x07FFFFFF)
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{
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smp = Pico_mcd->pcm_ram[addr >> PCM_STEP_SHIFT];
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@@ -109,8 +109,8 @@ void pcd_pcm_sync(unsigned int to)
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if (smp & 0x80)
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smp = -(smp & 0x7f);
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- out[s*2 ] += smp * mul_l; // max 128 * 119 = 15232
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- out[s*2+1] += smp * mul_r;
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+ out[s*2 ] += (smp * mul_l) >> 5; // max 127 * 255 * 15 / 32 = 15180
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+ out[s*2+1] += (smp * mul_r) >> 5;
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}
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ch->addr = addr;
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}
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