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Hold unfixed page and make both fixed and unfixed page publically available.

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This commit is contained in:
Adrian Conlon
2024-06-15 11:06:57 +01:00
parent 03d9ca9fe7
commit f4757074d6
1 changed files with 17 additions and 3 deletions
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20
M6502/M6502.cs
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@@ -759,11 +759,24 @@ namespace EightBit
#region Address page fixup
private byte unfixedPage;
private byte fixedPage;
public byte UnfixedPage
{
get => this.unfixedPage;
private set => this.unfixedPage = value;
}
public byte FixedPage
{
get => this.fixedPage;
private set => this.fixedPage = value;
}
private void MaybeFixup()
{
if (this.Bus.Address.High != this.fixedPage)
if (this.Bus.Address.High != this.FixedPage)
{
this.Fixup();
}
@@ -772,7 +785,8 @@ namespace EightBit
private void Fixup()
{
this.MemoryRead();
this.Bus.Address.High = this.fixedPage;
this.UnfixedPage = this.Bus.Address.High;
this.Bus.Address.High = this.FixedPage;
}
private void MaybeFixupR()
@@ -799,7 +813,7 @@ namespace EightBit
private void NoteFixedAddress(ushort address)
{
this.intermediate.Word = address;
this.fixedPage = this.intermediate.High;
this.FixedPage = this.intermediate.High;
this.Bus.Address.Low = this.intermediate.Low;
}