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Intellivision PSG bug fix and clean up

This commit is contained in:
alyosha-tas 2016-12-13 19:56:45 -05:00 committed by GitHub
parent 389e1000da
commit f723abe478
1 changed files with 5 additions and 26 deletions
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31
BizHawk.Emulation.Cores/Consoles/Intellivision/PSG.cs
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@ -66,6 +66,7 @@ namespace BizHawk.Emulation.Cores.Intellivision
for (int i = 0; i < samples.Length / 2; i++)
{
samples[i * 2] = (short)(audio_samples[(int)Math.Floor(3.7904 * i)]);
//samples[i * 2] = (short)(audio_samples[(int)Math.Floor(4.0 * i)]);
//samples[i * 2] = (short)(audio_samples[i*5]);
samples[(i * 2) + 1] = samples[i * 2];
}
@ -138,10 +139,7 @@ namespace BizHawk.Emulation.Cores.Intellivision
{
if (addr >= 0x01F0 && addr <= 0x01FF)
{
if (addr != 0x01FA)
return (ushort)(Register[addr - 0x01F0]);
else
return 0;
return (ushort)(Register[addr - 0x01F0]);
}
return null;
}
@ -152,30 +150,19 @@ namespace BizHawk.Emulation.Cores.Intellivision
sq_per_A = (Register[0] & 0xFF) | (((Register[4] & 0xF) << 8));
if (sq_per_A == 0)
sq_per_A = 0x1000;
//else
//sq_per_A *= 2;
//clock_A = 0;
sq_per_B = (Register[1] & 0xFF) | (((Register[5] & 0xF) << 8));
if (sq_per_B == 0)
sq_per_B = 0x1000;
//else
//sq_per_B *= 2;
//clock_B = 0;
sq_per_C = (Register[2] & 0xFF) | (((Register[6] & 0xF) << 8));
if (sq_per_C == 0)
sq_per_C = 0x1000;
//else
//sq_per_C *= 2;
//clock_C = 0;
env_per = (Register[3] & 0xFF) | (((Register[7] & 0xFF) << 8));
if (env_per == 0)
env_per = 0x20000;
//env_per *= 2;
A_on = Register[8].Bit(0);
B_on = Register[8].Bit(1);
C_on = Register[8].Bit(2);
@ -206,7 +193,6 @@ namespace BizHawk.Emulation.Cores.Intellivision
vol_C = Register[13] & 0xF;
env_vol_C = (Register[13] >> 4) & 0x3;
}
public bool WritePSG(ushort addr, ushort value)
@ -217,7 +203,7 @@ namespace BizHawk.Emulation.Cores.Intellivision
value &= 0xFF;
if (reg == 4 || reg == 5 || reg == 6)
if (reg == 4 || reg == 5 || reg == 6 || reg == 10)
value &= 0xF;
if (reg == 9)
@ -233,7 +219,7 @@ namespace BizHawk.Emulation.Cores.Intellivision
if (reg == 10)
{
env_clock = env_per;
if (env_shape == 0 || env_shape == 2 || env_shape == 3 || env_shape == 4 || env_shape == 5)
{
env_E = 15;
@ -243,8 +229,7 @@ namespace BizHawk.Emulation.Cores.Intellivision
{
env_E = 0;
E_up_down = 1;
}
}
}
/*
if (reg == 0 || reg == 4)
@ -331,7 +316,6 @@ namespace BizHawk.Emulation.Cores.Intellivision
{
env_E = 0;
}
}
}
@ -393,13 +377,8 @@ namespace BizHawk.Emulation.Cores.Intellivision
shift_C = 0;
audio_samples[sample_count] += (short)(sound_out_C ? (volume_table[env_E] >> shift_C) : 0);
}
sample_count++;
}
}
}