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Remove all cycle accurate processing

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This commit is contained in:
Adrian Conlon
2025-08-25 23:56:27 +01:00
parent 1779d1dc40
commit 17a2b99d6c
1 changed files with 3 additions and 46 deletions
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49
Z80/Z80.cs
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@@ -192,6 +192,7 @@ namespace Z80
this.ExxAF();
this.ResetRegisterSet();
}
private void Z80_LoweredINT(object? sender, EventArgs e)
{
this._interruptPending = true;
@@ -480,14 +481,8 @@ namespace Z80
{
Debug.Assert(ticks > 0, "Ticks must be greater than zero");
this.OnWritingMemory();
#if CYCLE_ACCURATE
this.Tick(ticks - 1);
this.LowerMREQ();
this.Tick();
#else
this.Tick(ticks);
this.LowerMREQ();
#endif
this.LowerWR();
this.Tick();
base.MemoryWrite();
@@ -507,13 +502,8 @@ namespace Z80
Debug.Assert(this.M1.Lowered(), "M1 must be lowered to refresh memory");
this.Bus.Address.Assign(this.REFRESH, this.IV);
this.LowerRFSH();
#if CYCLE_ACCURATE
this.LowerMREQ();
this.Tick();
#else
this.Tick();
this.LowerMREQ();
#endif
this.RaiseMREQ();
this.RaiseRFSH();
}
@@ -543,16 +533,10 @@ namespace Z80
private void MemoryReadWithoutM1()
{
Debug.Assert(this.M1.Raised());
#if CYCLE_ACCURATE
this.SetMemoryRead();
_ = base.MemoryRead();
this.Tick(2);
#else
this.Tick();
this.SetMemoryRead();
this.Tick();
_ = base.MemoryRead();
#endif
this.ResetMemoryRead();
}
@@ -1515,22 +1499,7 @@ namespace Z80
if (this._displaced)
{
this.FetchDisplacement();
{
this.ImmediateAddress();
#if CYCLE_ACCURATE
this.OnReadingMemory();
this.Tick();
this.SetMemoryRead();
var instruction = base.MemoryRead();
this.Tick();
this.ResetMemoryRead();
this.Tick();
this.OnReadMemory();
#else
var instruction = this.MemoryRead();
#endif
this.Execute(instruction);
}
this.Execute(this.FetchByte());
}
else
{
@@ -2419,13 +2388,8 @@ namespace Z80
{
this.MEMPTR.Assign(this.Bus.Address);
this.Tick();
#if CYCLE_ACCURATE
this.SetIOWrite();
this.Tick();
#else
this.Tick();
this.SetIOWrite();
#endif
this.Tick();
this.Ports.Write(this.Bus.Address, this.Bus.Data);
this.ResetIOWrite();
@@ -2461,17 +2425,10 @@ namespace Z80
private void ReadPort()
{
this.MEMPTR.Assign(this.Bus.Address);
this.Tick();
#if CYCLE_ACCURATE
this.Tick(2);
this.SetIORead();
this.Bus.Data = this.Ports.Read(this.Bus.Address);
this.Tick();
#else
this.Tick();
this.SetIORead();
this.Bus.Data = this.Ports.Read(this.Bus.Address);
#endif
this.Tick();
this.ResetIORead();
this.Tick();
}