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Correct some timing issues in GB core

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This commit is contained in:
Adrian Conlon
2025-03-27 10:19:18 +00:00
parent 08089823c2
commit 3ca3d60caf
1 changed files with 8 additions and 20 deletions
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28
LR35902/LR35902.cs
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@@ -48,26 +48,14 @@ namespace LR35902
public byte IE
{
get
{
return this.Bus.Peek(IoRegisters.BASE + IoRegisters.IE);
}
set
{
this.Bus.Poke(IoRegisters.BASE + IoRegisters.IE, value);
}
get => this.Bus.Peek(IoRegisters.BASE + IoRegisters.IE);
set => this.Bus.Poke(IoRegisters.BASE + IoRegisters.IE, value);
}
public byte IF
{
get
{
return this.bus.IO.Peek(IoRegisters.IF);
}
set
{
this.bus.IO.Poke(IoRegisters.IF, value);
}
get => this.bus.IO.Peek(IoRegisters.IF);
set => this.bus.IO.Poke(IoRegisters.IF, value);
}
private bool Stopped { get; set; }
@@ -327,8 +315,8 @@ namespace LR35902
protected override bool ReturnConditional(bool condition)
{
_ = base.ReturnConditional(condition);
this.TickMachine();
_ = base.ReturnConditional(condition);
return condition;
}
@@ -336,7 +324,7 @@ namespace LR35902
{
if (!base.JumpRelativeConditional(condition))
{
this.TickMachine();
this.MemoryRead(this.PC);
}
return condition;
}
@@ -504,6 +492,7 @@ namespace LR35902
break;
case 2: // GB: STOP
this.Stop();
this.TickMachine(2);
break;
case 3: // JR d
this.JumpRelative((sbyte)this.FetchByte());
@@ -654,6 +643,7 @@ namespace LR35902
if (z == 6 && y == 6)
{
this.LowerHALT(); // Exception (replaces LD (HL), (HL))
this.TickMachine(2);
}
else
{
@@ -819,11 +809,9 @@ namespace LR35902
break;
case 6: // DI
this.DI();
//this.Tick();
break;
case 7: // EI
this.EI();
//this.Tick();
break;
default:
break;