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Take advantage of some simplifications

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This commit is contained in:
Adrian Conlon
2025-03-28 09:17:09 +00:00
parent 3a9e89f009
commit fa48a64cac
1 changed files with 13 additions and 11 deletions
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24
LR35902/LR35902.cs
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@@ -369,7 +369,7 @@ namespace LR35902
3 => this.E,
4 => this.H,
5 => this.L,
6 => this.MemoryRead(this.HL.Word),
6 => this.MemoryRead(this.HL),
7 => this.A,
_ => throw new ArgumentOutOfRangeException(nameof(r)),
};
@@ -397,7 +397,7 @@ namespace LR35902
this.L = value;
break;
case 6:
this.MemoryWrite(this.HL.Word, value);
this.MemoryWrite(this.HL, value);
break;
case 7:
this.A = value;
@@ -446,8 +446,8 @@ namespace LR35902
};
this.R(z, operand);
this.F = AdjustZero(this.F, operand);
break;
}
break;
case 1: // BIT y, r[z]
this.Bit(y, this.R(z));
@@ -479,7 +479,7 @@ namespace LR35902
case 0: // NOP
break;
case 1: // GB: LD (nn),SP
this.Bus.Address.Word = this.FetchWord().Word;
this.Bus.Address.Assign(this.FetchWord());
this.SetWord(this.SP);
break;
case 2: // GB: STOP
@@ -505,7 +505,7 @@ namespace LR35902
switch (q)
{
case 0: // LD rp,nn
this.RP(p).Word = this.FetchWord().Word;
this.RP(p).Assign(this.FetchWord());
break;
case 1: // ADD HL,rp
@@ -733,7 +733,7 @@ namespace LR35902
switch (q)
{
case 0: // POP rp2[p]
this.RP2(p).Word = this.PopWord().Word;
this.RP2(p).Assign(this.PopWord());
break;
case 1:
switch (p)
@@ -745,10 +745,10 @@ namespace LR35902
this.RetI();
break;
case 2: // JP HL
this.Jump(this.HL.Word);
this.Jump(this.HL);
break;
case 3: // LD SP,HL
this.SP.Word = this.HL.Word;
this.SP.Assign(this.HL);
this.TickMachine();
break;
default:
@@ -775,14 +775,16 @@ namespace LR35902
this.MemoryWrite((ushort)(IoRegisters.BASE + this.C), this.A);
break;
case 5: // GB: LD (nn),A
this.Bus.Address.Word = this.MEMPTR.Word = this.FetchWord().Word;
this.MEMPTR.Assign(this.FetchWord());
this.Bus.Address.Assign(this.MEMPTR);
this.MemoryWrite(this.A);
break;
case 6: // GB: LD A,(FF00 + C)
this.A = this.MemoryRead((ushort)(IoRegisters.BASE + this.C));
break;
case 7: // GB: LD A,(nn)
this.Bus.Address.Word = this.MEMPTR.Word = this.FetchWord().Word;
this.MEMPTR.Assign(this.FetchWord());
this.Bus.Address.Assign(this.MEMPTR);
this.A = this.MemoryRead();
break;
default:
@@ -943,7 +945,7 @@ namespace LR35902
{
this.TickMachine();
this.MEMPTR.Word = operand.Word;
this.MEMPTR.Assign(operand);
var result = this.MEMPTR.Word + value.Word;