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Fixed per scanline interrupts. No artifacts in MMCOI

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This commit is contained in:
Marc Parsons
2026-05-15 23:38:40 +01:00
parent 4e745b4fbc
commit ec40e04ff3
8 changed files with 263 additions and 104 deletions
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70
Core/Audio/SmsApu.cs
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@@ -1,4 +1,5 @@
using Core.Interfaces;
using System.IO;
namespace Core.Audio
{
@@ -196,50 +197,29 @@ namespace Core.Audio
}
}
}
public void SaveState(BinaryWriter bw)
{
for (int i = 0; i < 8; i++) bw.Write(Registers[i]);
bw.Write(_latchedRegister);
bw.Write(_sampleCycleTracker);
bw.Write(_psgCycleTracker);
for (int i = 0; i < 4; i++) { bw.Write(_counters[i]); bw.Write(_polarities[i]); }
bw.Write(_lfsr);
bw.Write(_previousSample);
bw.Write(_previousFiltered);
}
public void LoadState(BinaryReader br)
{
for (int i = 0; i < 8; i++) Registers[i] = br.ReadUInt16();
_latchedRegister = br.ReadInt32();
_sampleCycleTracker = br.ReadDouble();
_psgCycleTracker = br.ReadInt32();
for (int i = 0; i < 4; i++) { _counters[i] = br.ReadInt32(); _polarities[i] = br.ReadInt32(); }
_lfsr = br.ReadUInt16();
_previousSample = br.ReadSingle();
_previousFiltered = br.ReadSingle();
}
}
}
//using System;
//namespace Core.Audio
//{
// public class SmsApu
// {
// // The 8 internal registers of the PSG
// // 0: Tone 0 Frequency (10 bits)
// // 1: Tone 0 Volume (4 bits)
// // 2: Tone 1 Frequency (10 bits)
// // 3: Tone 1 Volume (4 bits)
// // 4: Tone 2 Frequency (10 bits)
// // 5: Tone 2 Volume (4 bits)
// // 6: Noise Control (3 bits)
// // 7: Noise Volume (4 bits)
// public ushort[] Registers { get; private set; } = new ushort[8];
// // Remembers which register the CPU is currently talking to
// private int _latchedRegister = 0;
// public SmsApu()
// {
// // Volumes default to 0x0F (Silence! 0 = max volume, 15 = off)
// Registers[1] = 0x0F;
// Registers[3] = 0x0F;
// Registers[5] = 0x0F;
// Registers[7] = 0x0F;
// }
// }
//}