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3bit adpcm pitch was wrong

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This commit is contained in:
Michaël Banaan Ananas 2012-04-17 10:44:28 +00:00
parent 995513cb74
commit 523b96e818
1 changed files with 5 additions and 7 deletions
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12
src/emu/sound/i5000.c
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@ -113,14 +113,14 @@ void i5000snd_device::sound_stream_update(sound_stream &stream, stream_sample_t
adpcm_data = m_channels[ch].m_adpcm.clock(adpcm_data & m_channels[ch].shift_mask); adpcm_data = m_channels[ch].m_adpcm.clock(adpcm_data & m_channels[ch].shift_mask);
m_channels[ch].output_r = adpcm_data * m_channels[ch].vol_r; m_channels[ch].output_r = adpcm_data * m_channels[ch].vol_r / 16;
m_channels[ch].output_l = adpcm_data * m_channels[ch].vol_l; m_channels[ch].output_l = adpcm_data * m_channels[ch].vol_l / 16;
mix_r += m_channels[ch].output_r; mix_r += m_channels[ch].output_r;
mix_l += m_channels[ch].output_l; mix_l += m_channels[ch].output_l;
} }
outputs[0][i] = mix_r / (16*8); outputs[0][i] = mix_r / 16;
outputs[1][i] = mix_l / (16*8); outputs[1][i] = mix_l / 16;
} }
} }
@ -178,7 +178,7 @@ void i5000snd_device::write_reg16(UINT8 reg, UINT16 data)
// 3-bit ADPCM // 3-bit ADPCM
case 0x0104: case 0x0104:
case 0x0304: // same? case 0x0304: // same?
m_channels[ch].freq_min = 0x100 * (4.0 / 3.0); m_channels[ch].freq_min = 0x140;
m_channels[ch].shift_amount = 3; m_channels[ch].shift_amount = 3;
m_channels[ch].shift_mask = 0xe; m_channels[ch].shift_mask = 0xe;
break; break;
@ -198,8 +198,6 @@ void i5000snd_device::write_reg16(UINT8 reg, UINT16 data)
m_channels[ch].freq_timer = 0; m_channels[ch].freq_timer = 0;
m_channels[ch].shift_pos = 0; m_channels[ch].shift_pos = 0;
m_channels[ch].output_l = 0;
m_channels[ch].output_r = 0;
m_channels[ch].m_adpcm.reset(); m_channels[ch].m_adpcm.reset();
m_channels[ch].is_playing = read_sample(ch); m_channels[ch].is_playing = read_sample(ch);