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Rationalise use of "intermediate" Register16

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This commit is contained in:
Adrian Conlon
2024-06-29 13:38:55 +01:00
parent 7f0ca27412
commit 6e46c8e47f
5 changed files with 65 additions and 70 deletions
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32
EightBit/BigEndianProcessor.cs
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@@ -5,13 +5,11 @@ namespace EightBit
{
public abstract class BigEndianProcessor(Bus memory) : Processor(memory)
{
private readonly Register16 intermediate = new();
public override Register16 PeekWord(ushort address)
{
this.intermediate.High = this.Bus.Peek(address);
this.intermediate.Low = this.Bus.Peek(++address);
return this.intermediate;
this.Intermediate.High = this.Bus.Peek(address);
this.Intermediate.Low = this.Bus.Peek(++address);
return this.Intermediate;
}
public override void PokeWord(ushort address, Register16 value)
@@ -22,32 +20,32 @@ namespace EightBit
protected override Register16 FetchWord()
{
this.intermediate.High = this.FetchByte();
this.intermediate.Low = this.FetchByte();
return this.intermediate;
this.Intermediate.High = this.FetchByte();
this.Intermediate.Low = this.FetchByte();
return this.Intermediate;
}
protected override Register16 GetWord()
{
this.intermediate.High = this.MemoryRead();
this.Intermediate.High = this.MemoryRead();
++this.Bus.Address.Word;
this.intermediate.Low = this.MemoryRead();
return this.intermediate;
this.Intermediate.Low = this.MemoryRead();
return this.Intermediate;
}
protected override Register16 GetWordPaged()
{
this.intermediate.High = this.MemoryRead();
this.Intermediate.High = this.MemoryRead();
++this.Bus.Address.Low;
this.intermediate.Low = this.MemoryRead();
return this.intermediate;
this.Intermediate.Low = this.MemoryRead();
return this.Intermediate;
}
protected override Register16 PopWord()
{
this.intermediate.High = this.Pop();
this.intermediate.Low = this.Pop();
return this.intermediate;
this.Intermediate.High = this.Pop();
this.Intermediate.Low = this.Pop();
return this.Intermediate;
}
protected override void PushWord(Register16 value)