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Add increment/decrement operations to the Register16 class

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This commit is contained in:
Adrian Conlon
2025-05-11 19:24:40 +01:00
parent 60d000905f
commit 36e983526e
11 changed files with 65 additions and 60 deletions
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Z80/Z80.cs
+26 -26
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@@ -913,7 +913,7 @@ namespace Z80
case 0: // Input from port with 16-bit address
this.Bus.Address.Assign(this.BC);
this.ReadPort();
this.MEMPTR.Word++;
this.MEMPTR.Increment();
if (y != 6)
{
this.R(y, AccessLevel.WriteOnly) = this.Bus.Data; // IN r[y],(C)
@@ -924,7 +924,7 @@ namespace Z80
break;
case 1: // Output to port with 16-bit address
this.WritePort(this.BC, y == 6 ? (byte)0 : this.R(y));
this.MEMPTR.Word++;
this.MEMPTR.Increment();
break;
case 2: // 16-bit add/subtract with carry
this.HL2().Assign(q switch
@@ -1215,10 +1215,10 @@ namespace Z80
switch (q)
{
case 0: // INC rp
++this.RP(p).Word;
this.RP(p).Increment();
break;
case 1: // DEC rp
--this.RP(p).Word;
this.RP(p).Decrement();
break;
default:
throw new NotSupportedException("Invalid operation mode");
@@ -1927,16 +1927,16 @@ namespace Z80
private void XHTL(Register16 exchange)
{
this.MEMPTR.Low = this.MemoryRead(this.SP);
++this.Bus.Address.Word;
this.Bus.Address.Increment();
this.MEMPTR.High = this.MemoryRead();
this.Tick();
--this.Bus.Address.Word;
this.Bus.Address.Decrement();
this.Tick();
this.Bus.Data = exchange.Low;
exchange.Low = this.MEMPTR.Low;
this.MemoryUpdate(1);
this.Tick();
++this.Bus.Address.Word;
this.Bus.Address.Increment();
this.Tick();
this.Bus.Data = exchange.High;
exchange.High = this.MEMPTR.High;
@@ -1980,15 +1980,15 @@ namespace Z80
private void CPI()
{
this.BlockCompare();
++this.HL.Word;
++this.MEMPTR.Word;
this.HL.Increment();
this.MEMPTR.Increment();
}
private void CPD()
{
this.BlockCompare();
--this.HL.Word;
--this.MEMPTR.Word;
this.HL.Decrement();
this.MEMPTR.Decrement();
}
#endregion
@@ -2045,15 +2045,15 @@ namespace Z80
private void LDI()
{
this.BlockLoad();
++this.HL.Word;
++this.DE.Word;
this.HL.Increment();
this.DE.Increment();
}
private void LDD()
{
this.BlockLoad();
--this.HL.Word;
--this.DE.Word;
this.HL.Decrement();
this.DE.Decrement();
}
#endregion
@@ -2146,16 +2146,16 @@ namespace Z80
{
this.BlockIn();
this.AdjustBlockInFlagsIncrement();
++this.HL.Word;
++this.MEMPTR.Word;
this.HL.Increment();
this.MEMPTR.Increment();
}
private void IND()
{
this.BlockIn();
this.AdjustBlockInFlagsDecrement();
--this.HL.Word;
--this.MEMPTR.Word;
this.HL.Decrement();
this.MEMPTR.Decrement();
}
#endregion
@@ -2203,17 +2203,17 @@ namespace Z80
private void OUTI()
{
this.BlockOut();
++this.HL.Word;
this.HL.Increment();
this.AdjustBlockOutFlags();
++this.MEMPTR.Word;
this.MEMPTR.Increment();
}
private void OUTD()
{
this.BlockOut();
--this.HL.Word;
this.HL.Decrement();
this.AdjustBlockOutFlags();
--this.MEMPTR.Word;
this.MEMPTR.Decrement();
}
#endregion
@@ -2275,7 +2275,7 @@ namespace Z80
private byte ReadMemoryIndirect()
{
this.Bus.Address.Assign(this.MEMPTR);
++this.MEMPTR.Word;
this.MEMPTR.Increment();
return this.MemoryRead();
}
@@ -2288,7 +2288,7 @@ namespace Z80
private void WriteMemoryIndirect(byte data)
{
this.Bus.Address.Assign(this.MEMPTR);
++this.MEMPTR.Word;
this.MEMPTR.Increment();
this.MEMPTR.High = this.Bus.Data = data;
this.MemoryWrite();
}
@@ -2355,7 +2355,7 @@ namespace Z80
{
this.Bus.Address.Assign(port, this.Bus.Data = this.A);
this.ReadPort();
++this.MEMPTR.Word;
this.MEMPTR.Increment();
}
private void ReadPort()