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Turns out using lambdas to control pins is lovely and correct, but terribly slow. Back to a more traditional method.

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This commit is contained in:
Adrian Conlon
2025-03-24 20:18:04 +00:00
parent d4dc99b454
commit 3d6b549c76
12 changed files with 184 additions and 326 deletions
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74
EightBit/Processor.cs
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@ -10,57 +10,9 @@ namespace EightBit
public event EventHandler<EventArgs>? ExecutingInstruction;
public event EventHandler<EventArgs>? ExecutedInstruction;
protected virtual void OnExecutedInstruction() => ExecutedInstruction?.Invoke(this, EventArgs.Empty);
protected virtual void OnExecutingInstruction() => ExecutingInstruction?.Invoke(this, EventArgs.Empty);
#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;
@ -108,12 +60,12 @@ namespace EightBit
public virtual int Step()
{
this.ResetCycles();
this.OnExecutingInstruction();
ExecutingInstruction?.Invoke(this, EventArgs.Empty);
if (this.Powered)
{
this.PoweredStep();
}
this.OnExecutedInstruction();
ExecutedInstruction?.Invoke(this, EventArgs.Empty);
return this.Cycles;
}
@ -149,9 +101,9 @@ namespace EightBit
{
if (this.RESET.Lowered())
{
this.OnRaisingRESET();
RaisingRESET?.Invoke(this, EventArgs.Empty);
this.RESET.Raise();
this.OnRaisedRESET();
RaisedRESET?.Invoke(this, EventArgs.Empty);
}
}
@ -159,9 +111,9 @@ namespace EightBit
{
if (this.RESET.Raised())
{
this.OnLoweringRESET();
LoweringRESET?.Invoke(this, EventArgs.Empty);
this.RESET.Lower();
this.OnLoweredRESET();
LoweredRESET?.Invoke(this, EventArgs.Empty);
}
}
@ -170,9 +122,9 @@ namespace EightBit
{
if (this.INT.Lowered())
{
this.OnRaisingINT();
RaisingINT?.Invoke(this, EventArgs.Empty);
this.INT.Raise();
this.OnRaisedINT();
RaisedINT?.Invoke(this, EventArgs.Empty);
}
}
@ -180,9 +132,9 @@ namespace EightBit
{
if (this.INT.Raised())
{
this.OnLoweringINT();
LoweringINT?.Invoke(this, EventArgs.Empty);
this.INT.Lower();
this.OnLoweredINT();
LoweredINT?.Invoke(this, EventArgs.Empty);
}
}
@ -226,13 +178,11 @@ namespace EightBit
protected void MemoryWrite(Register16 address, byte data)
{
ArgumentNullException.ThrowIfNull(address);
this.MemoryWrite(address.Low, address.High, data);
}
protected void MemoryWrite(Register16 address)
{
ArgumentNullException.ThrowIfNull(address);
this.MemoryWrite(address.Low, address.High);
}
@ -260,7 +210,6 @@ namespace EightBit
protected byte MemoryRead(Register16 address)
{
ArgumentNullException.ThrowIfNull(address);
return this.MemoryRead(address.Low, address.High);
}
@ -286,7 +235,6 @@ namespace EightBit
protected Register16 GetWordPaged(Register16 address)
{
ArgumentNullException.ThrowIfNull(address);
return this.GetWordPaged(address.High, address.Low);
}
@ -300,7 +248,6 @@ namespace EightBit
protected void SetWordPaged(Register16 address, Register16 value)
{
ArgumentNullException.ThrowIfNull(address);
this.SetWordPaged(address.High, address.Low, value);
}
@ -354,7 +301,6 @@ namespace EightBit
protected void Jump(Register16 destination)
{
ArgumentNullException.ThrowIfNull(destination);
this.PC.Assign(destination);
}