From 18868128e18d38b706e7df14e8e683e1a9739c17 Mon Sep 17 00:00:00 2001
From: Melodi <62381002+Melodi17@users.noreply.github.com>
Date: Tue, 17 Mar 2026 20:49:22 +1000
Subject: chore: Initial commit

---
 Emulator/Chip/Q1CpuAddressingModes.cs | 187 ----------------------------------
 1 file changed, 187 deletions(-)
 delete mode 100644 Emulator/Chip/Q1CpuAddressingModes.cs

(limited to 'Emulator/Chip/Q1CpuAddressingModes.cs')

diff --git a/Emulator/Chip/Q1CpuAddressingModes.cs b/Emulator/Chip/Q1CpuAddressingModes.cs
deleted file mode 100644
index 40020f1..0000000
--- a/Emulator/Chip/Q1CpuAddressingModes.cs
+++ /dev/null
@@ -1,187 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-
-public partial class Q1Cpu
-{
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) Address(u8 mode)
-    {
-        return mode switch
-        {
-            0x0 => this.AddressingMode_Implicit(),
-            0x1 => this.AddressingMode_Immediate(),
-            0x2 => this.AddressingMode_Direct(),
-            0x3 => this.AddressingMode_Indirect(),
-            0x4 => this.AddressingMode_Relative(),
-            0x5 => this.AddressingMode_Register(),
-            0x6 => this.AddressingMode_RegisterIndirect(),
-            0x7 => this.AddressingMode_RegisterIndirectOffset(),
-            _   => throw new InvalidOperationException($"Unknown addressing mode: {mode:X2}"),
-        };
-    }
-
-    private u8 AddressingModeLength(u8 mode)
-    {
-        return mode switch
-        {
-            0x0 => 0, // Implicit
-            0x1 => 2, // Immediate
-            0x2 => 2, // Direct
-            0x3 => 2, // Indirect
-            0x4 => 2, // Relative
-            0x5 => 1, // Register
-            0x6 => 1, // Register indirect
-            0x7 => 3, // Register indirect with offset
-            _   => throw new InvalidOperationException($"Unknown addressing mode: {mode:X2}"),
-        };
-    }
-    
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Implicit()
-    {
-        u16 Read() => throw new InvalidOperationException("Cannot read from implicit mode.");
-        void Write(u16 value) => throw new InvalidOperationException("Cannot write to implicit mode.");
-        void WriteByte(u8 value) => throw new InvalidOperationException("Cannot write byte to implicit mode.");
-        
-        return (Read, Write, WriteByte);
-    }
-
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Immediate()
-    {
-        u16 value = this.Bus.ReadWord(this.PC);
-        this.PC += 2;
-
-        u16 Read() => value;
-        void Write(u16 v) => throw new InvalidOperationException("Cannot write to immediate mode.");
-        void WriteByte(u8 v) => throw new InvalidOperationException("Cannot write byte to immediate mode.");
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Direct()
-    {
-        u16 address = this.Bus.ReadWord(this.PC);
-        this.PC += 2;
-        
-        u16 Read() => this.Bus.ReadWord(address);
-        void Write(u16 value) => this.Bus.WriteWord(address, value);
-        void WriteByte(u8 value) => this.Bus.Write(address, value);
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Indirect()
-    {
-        u16 address = this.Bus.ReadWord(this.PC);
-        this.PC += 2;
-        
-        u16 Read()
-        {
-            u16 indirectAddress = this.Bus.ReadWord(address);
-            u16 value = this.Bus.ReadWord(indirectAddress);
-            return value;
-        }
-
-        void Write(u16 value)
-        {
-            u16 indirectAddress = this.Bus.ReadWord(address);
-            this.Bus.WriteWord(indirectAddress, value);
-        }
-        
-        void WriteByte(u8 value)
-        {
-            u16 indirectAddress = this.Bus.ReadWord(address);
-            this.Bus.Write(indirectAddress, value);
-        }
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Relative()
-    {
-        u16 offset = this.Bus.ReadWord(this.PC);
-        this.PC += 2;
-
-        u16 address = (u16) (this.PC + offset);
-
-        u16 Read() => address;
-        void Write(u16 value) => throw new InvalidOperationException("Cannot write to relative mode.");
-        void WriteByte(u8 value) => throw new InvalidOperationException("Cannot write byte to relative mode.");
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_Register()
-    {
-        u8 regIndex = this.Bus.Read(this.PC);
-        this.PC += 1;
-        
-        u16 Read() => this.FetchRegister(regIndex);
-        void Write(u16 value) => this.StoreRegister(regIndex, value);
-        void WriteByte(u8 value)
-        {
-            u16 currentValue = this.FetchRegister(regIndex);
-            u16 newValue = (u16) ((currentValue & 0xFF00) | (value & 0x00FF)); // Update low byte
-            this.StoreRegister(regIndex, newValue);
-        }
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_RegisterIndirect()
-    {
-        u8 regIndex = this.Bus.Read(this.PC);
-        this.PC += 1;
-
-        u16 Read()
-        {
-            u16 address = this.FetchRegister(regIndex);
-            u16 value = this.Bus.ReadWord(address);
-            return value;
-        }
-        
-        void Write(u16 value)
-        {
-            u16 address = this.FetchRegister(regIndex);
-            this.Bus.WriteWord(address, value);
-        }
-        
-        void WriteByte(u8 value)
-        {
-            u16 address = this.FetchRegister(regIndex);
-            this.Bus.Write(address, value);
-        }
-        
-        return (Read, Write, WriteByte);
-    }
-
-    public (Func<u16> read, Action<u16> write, Action<u8> writeByte) AddressingMode_RegisterIndirectOffset()
-    {
-        u8 regIndex = this.Bus.Read(this.PC);
-        this.PC += 1;
-
-        u16 offset = this.Bus.ReadWord(this.PC);
-        this.PC += 2;
-
-        u16 Read()
-        {
-            u16 address = (u16) (this.FetchRegister(regIndex) + offset);
-            u16 value = this.Bus.ReadWord(address);
-            return value;
-        }
-        
-        void Write(u16 value)
-        {
-            u16 address = (u16) (this.FetchRegister(regIndex) + offset);
-            this.Bus.WriteWord(address, value);
-        }
-        
-        void WriteByte(u8 value)
-        {
-            u16 address = (u16) (this.FetchRegister(regIndex) + offset);
-            this.Bus.Write(address, value);
-        }
-        
-        return (Read, Write, WriteByte);
-    }
-}
\ No newline at end of file
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