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Library fixes

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This commit is contained in:
Adrian Conlon
2025-03-18 21:32:44 +00:00
parent a9db2f58bd
commit 8a68fc5856
2 changed files with 56 additions and 1 deletions
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5
EightBit/IntelProcessor.cs
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@@ -83,6 +83,11 @@ namespace EightBit
}
}
protected void ResetWorkingRegisters()
{
this.AF.Word = this.BC.Word = this.DE.Word = this.HL.Word = (ushort)Mask.Sixteen;
}
protected static int BuildHalfCarryIndex(byte before, byte value, int calculation) => ((before & 0x88) >> 1) | ((value & 0x88) >> 2) | ((calculation & 0x88) >> 3);
protected static int CalculateHalfCarryAdd(byte before, byte value, int calculation)

52
EightBit/Processor.cs
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@@ -15,6 +15,53 @@ namespace EightBit
#endregion
#region Bus events
#region Memory events
#region Memory read events
public event EventHandler<EventArgs>? ReadingMemory;
public event EventHandler<EventArgs>? ReadMemory;
protected virtual void OnReadingMemory() => ReadingMemory?.Invoke(this, EventArgs.Empty);
protected virtual void OnReadMemory() => ReadMemory?.Invoke(this, EventArgs.Empty);
#endregion
#region Memory write events
public event EventHandler<EventArgs>? WritingMemory;
public event EventHandler<EventArgs>? WrittenMemory;
protected virtual void OnWritingMemory() => WritingMemory?.Invoke(this, EventArgs.Empty);
protected virtual void OnWrittenMemory() => WrittenMemory?.Invoke(this, EventArgs.Empty);
#endregion
#endregion
#region IO events
#region IO read events
public event EventHandler<EventArgs>? ReadingIO;
public event EventHandler<EventArgs>? ReadIO;
protected virtual void OnReadingIO() => ReadingIO?.Invoke(this, EventArgs.Empty);
protected virtual void OnReadIO() => ReadIO?.Invoke(this, EventArgs.Empty);
#endregion
#region IO write events
public event EventHandler<EventArgs>? WritingIO;
public event EventHandler<EventArgs>? WrittenIO;
protected virtual void OnWritingIO() => WritingIO?.Invoke(this, EventArgs.Empty);
protected virtual void OnWrittenIO() => WrittenIO?.Invoke(this, EventArgs.Empty);
#endregion
#endregion
#endregion
private PinLevel _resetLine;
private PinLevel _intLine;
@@ -217,7 +264,10 @@ namespace EightBit
return this.MemoryRead(address.Low, address.High);
}
protected virtual byte MemoryRead() => this.BusRead();
protected virtual byte MemoryRead()
{
return this.BusRead();
}
protected virtual byte BusRead() => this.Bus.Read(); // N.B. Should be the only real call into the "Bus.Read" code.