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-rw-r--r--Emulator/Chip/Bus.cs37
-rw-r--r--Emulator/Chip/BusDevice.cs49
-rw-r--r--Emulator/Chip/DisplayDevice.cs94
-rw-r--r--Emulator/Chip/GraphicsDevice.cs6
-rw-r--r--Emulator/Chip/HIDDevice.cs49
-rw-r--r--Emulator/Chip/Q1Cpu.cs167
-rw-r--r--Emulator/Chip/Q1CpuAddressingModes.cs187
-rw-r--r--Emulator/Chip/Q1CpuInstructions.cs278
-rw-r--r--Emulator/Chip/RamDevice.cs33
9 files changed, 0 insertions, 900 deletions
diff --git a/Emulator/Chip/Bus.cs b/Emulator/Chip/Bus.cs
deleted file mode 100644
index 0907f61..0000000
--- a/Emulator/Chip/Bus.cs
+++ /dev/null
@@ -1,37 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System.Collections.Generic;
-using System.Linq;
-
-public class Bus : BusDevice
-{
- public List<BusDevice> Devices;
-
- public Bus(u16 addressableStart, u16 addressableEnd) : base(addressableStart, addressableEnd)
- {
- this.Devices = [];
- }
- private BusDevice? GetDevice(u16 address)
- {
- BusDevice? device = this.Devices.FirstOrDefault(x => address >= x.AddressableStart && address < x.AddressableEnd);
- return device;
- }
-
- public override u8 Read(u16 address)
- {
- BusDevice? device = this.GetDevice(address);
- if (device == null)
- return 0;
-
- return device.Read(address);
- }
-
- public override void Write(u16 address, u8 value)
- {
- BusDevice? device = this.GetDevice(address);
- if (device == null)
- return;
-
- device.Write(address, value);
- }
-} \ No newline at end of file
diff --git a/Emulator/Chip/BusDevice.cs b/Emulator/Chip/BusDevice.cs
deleted file mode 100644
index 1e1e972..0000000
--- a/Emulator/Chip/BusDevice.cs
+++ /dev/null
@@ -1,49 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System.Runtime.CompilerServices;
-
-public abstract class BusDevice
-{
- public BusDevice(u16 addressableStart, u16 addressableEnd)
- {
- this.AddressableStart = addressableStart;
- this.AddressableEnd = addressableEnd;
- }
-
- public Bus Bus { get; set; }
- public abstract u8 Read(u16 address);
- public abstract void Write(u16 address, u8 value);
-
- public u16 ReadWord(u16 address)
- {
- u8 high = this.Read(address);
- u8 low = this.Read((u16) (address + 1));
- u16 value = Make.u16(high, low);
- return value;
- }
-
- public void WriteWord(u16 address, u16 value)
- {
- ref8 data = Make.ref8(value);
- this.Write(address, data[0]);
- this.Write((u16) (address + 1), data[1]);
- }
-
- public virtual void Clock() { }
- public virtual void Reset() { }
-
- public void AttachToBus(Bus bus)
- {
- this.Bus = bus;
- bus.Devices.Add(this);
- }
-
- [MethodImpl(MethodImplOptions.AggressiveInlining)]
- protected u16 GetRelativeAddress(u16 address)
- {
- return (u16) (address - this.AddressableStart);
- }
-
- public u16 AddressableStart { get; }
- public u16 AddressableEnd { get; }
-} \ No newline at end of file
diff --git a/Emulator/Chip/DisplayDevice.cs b/Emulator/Chip/DisplayDevice.cs
deleted file mode 100644
index c8889ba..0000000
--- a/Emulator/Chip/DisplayDevice.cs
+++ /dev/null
@@ -1,94 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
-
-public class DisplayDevice : RamDevice
-{
- public Texture2D? OutputTexture;
-
- private readonly u16 _paletteSize;
- private readonly u16 _displayWidth;
- private readonly u16 _displayHeight;
-
- private Color[] textureData;
- private Color[] palette;
- private bool _paletteDirty;
-
- public DisplayDevice(u16 paletteSize, u16 displayWidth, u16 displayHeight, u16 addressableStart)
- : base(
- addressableStart, DisplayDevice.DetermineSize(paletteSize, displayWidth, displayHeight))
- {
- this._paletteSize = paletteSize;
- this._displayWidth = displayWidth;
- this._displayHeight = displayHeight;
- this.textureData = new Color[this._displayWidth * this._displayHeight];
- }
-
- public static u16 DetermineSize(u16 paletteSize, u16 displayWidth, u16 displayHeight)
- {
- return (u16) ((paletteSize * 3) + (displayWidth * displayHeight));
- }
-
- public override void Clock()
- {
- if (this._paletteDirty)
- this.ReadPalette();
-
- ref8 pixelData = this.Memory.AsSpan(
- (u16) (this._paletteSize * 3), (u16) (this._displayWidth * this._displayHeight));
-
- for (u16 i = 0; i < this.textureData.Length; i++)
- {
- u8 pixelValue = pixelData[i];
- this.textureData[i] = palette[pixelValue % this._paletteSize];
- }
-
- if (this.OutputTexture != null)
- this.OutputTexture.SetData(this.textureData);
- }
-
- private void ReadPalette()
- {
- ref8 paletteData = this.Memory.AsSpan(0, (u16) (this._paletteSize * 3));
- Color[] colors = new Color[this._paletteSize + 1];
- colors[0] = Color.Transparent;
-
- for (u16 i = 0; i < this._paletteSize; i++)
- {
- u16 offset = (u16) (i * 3);
- byte r = paletteData[offset];
- byte g = paletteData[offset + 1];
- byte b = paletteData[offset + 2];
- colors[(u16) (i + 1)] = new Color(r, g, b);
- }
-
- this._paletteDirty = false;
- this.palette = colors;
- }
-
- public void SetPalette(Color[] palette)
- {
- if (palette.Length != this._paletteSize)
- throw new ArgumentException($"Palette must have {this._paletteSize} colors.");
-
- ref8 paletteData = this.Memory.AsSpan(0, (u16) (this._paletteSize * 3));
- for (u16 i = 0; i < this._paletteSize; i++)
- {
- u16 offset = (u16) (i * 3);
- paletteData[offset] = palette[i].R;
- paletteData[offset + 1] = palette[i].G;
- paletteData[offset + 2] = palette[i].B;
- }
-
- this._paletteDirty = true;
- }
-
- public override u8 Read(u16 address) => base.Read(address);
- public override void Write(u16 address, u8 value)
- {
- this._paletteDirty = true;
- base.Write(address, value);
- }
-} \ No newline at end of file
diff --git a/Emulator/Chip/GraphicsDevice.cs b/Emulator/Chip/GraphicsDevice.cs
deleted file mode 100644
index 0f649ac..0000000
--- a/Emulator/Chip/GraphicsDevice.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-public class GraphicsDevice
-{
-
-} \ No newline at end of file
diff --git a/Emulator/Chip/HIDDevice.cs b/Emulator/Chip/HIDDevice.cs
deleted file mode 100644
index c8a7d04..0000000
--- a/Emulator/Chip/HIDDevice.cs
+++ /dev/null
@@ -1,49 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-
-public class HIDDevice : RamDevice
-{
- public HIDDevice(u16 start) : base(start, HIDDevice.CalculateSize()) { }
-
- public static u16 CalculateSize()
- {
- return 4 + 256;
- }
-
- public void SetMouse(u16 positionalIndex, bool leftDown, bool rightDown, bool middleDown)
- {
- this.WriteWord(this.AddressableStart, positionalIndex);
- u16 buttons = (u16) ((leftDown ? 1 : 0)
- | ((rightDown ? 1 : 0) << 1)
- | ((middleDown ? 1 : 0) << 2));
- this.WriteWord((u16) (this.AddressableStart + 2), buttons);
- }
-
- public void SetKeyboard(u8 scanCode, bool pressed)
- {
- int index = scanCode >> 3; // keyCode / 8
- int bit = scanCode & 7; // keyCode % 8
-
- ushort addr = (ushort) (4 + index);
- u8 value = this.Read((u16) (this.AddressableStart + addr));
-
- if (pressed)
- value |= (u8) (1 << bit);
- else
- value &= (u8) ~(1 << bit);
-
- this.Write((u16) (this.AddressableStart + addr), value);
- }
-
- public bool GetKeyboard(int scanCode)
- {
- int index = scanCode >> 3;
- int bit = scanCode & 7;
-
- ushort addr = (ushort) (4 + index);
- byte value = this.Read((u16) (this.AddressableStart + addr));
-
- return (value & (1 << bit)) != 0;
- }
-} \ No newline at end of file
diff --git a/Emulator/Chip/Q1Cpu.cs b/Emulator/Chip/Q1Cpu.cs
deleted file mode 100644
index 81f9908..0000000
--- a/Emulator/Chip/Q1Cpu.cs
+++ /dev/null
@@ -1,167 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-using Assembler;
-
-public partial class Q1Cpu
-{
- public Random Random;
-
- public u16 AX = 0; // Accumulator register
- public u16 DX = 0; // Data register
- public u16 LX = 0; // Logical register
-
- public u16 SP { get; set; } // Stack pointer
- public u16 PC { get; set; } // Program counter
-
- public u16[] V { get; set; } // Variable registers (64 total)
- public u16 Cycles { get; set; } // Number of cycles
-
- public Bus Bus { get; set; }
- public bool AbortRequested = false;
-
- public Q1Cpu()
- {
- this.LoadInstructionLookup();
- }
-
- public void Reset()
- {
- this.AbortRequested = false;
-
- this.V = new u16[64];
-
- this.SP = Q1Layout.StackStart;
- this.PushStack(0xFFFF);
-
- this.PC = Q1Layout.ProgramStart;
- }
-
- public void Clock()
- {
- var pc = this.PC;
- if (pc == 0xFFFF)
- {
- this.AbortRequested = true;
- return;
- }
-
- u16 instruction = this.FetchInstruction(out u8 op, out u8 m1, out u8 m2, out _);
- // if (instruction != 0x0101)
- // Console.WriteLine($"CPU.Clock: {pc:X4} | {Disassembler.ParseInstruction(instruction)}");
-
- bool ex = m2 > 0;
- switch (m1, ex)
- {
- case (0x00, false):
- this.InstructionLookup[op].Item1(); // Implicit
- break;
- case (> 0x00, false):
- this.InstructionLookup[op].Item2(m1); // Simple addressing mode
- break;
- case (0x00, true):
- this.InstructionLookup[op].Item3(); // Extended implicit
- break;
- case (> 0x00, true):
- this.InstructionLookup[op].Item4(m1, m2); // Extended addressing mode
- break;
- }
-
- this.Cycles++;
- }
- public u16 FetchInstruction(out u8 op, out u8 m1, out u8 m2, out u8 length)
- {
- u16 instruction = this.Bus.ReadWord(this.PC);
- this.PC += 2;
-
- op = (u8) ((instruction >> 8) & 0xFF); // 256 opcodes
- m1 = (u8) ((instruction >> 4) & 0x0F); // 16 modes
- m2 = (u8) (instruction & 0x0F); // 16 modes
-
- length = (u8) (this.AddressingModeLength(m1) + this.AddressingModeLength(m2));
- return instruction;
- }
-
- private void PushStack(u16 value)
- {
- if (this.SP + 2 >= Q1Layout.StackStart + Q1Layout.StackLength)
- throw new InvalidOperationException("Stack overflow");
-
- this.Bus.WriteWord(this.SP, value);
- this.SP += 2;
- }
-
- private u16 PopStack()
- {
- if (this.SP - 2 < Q1Layout.StackStart)
- throw new InvalidOperationException("Stack underflow");
-
- this.SP -= 2;
- return this.Bus.ReadWord(this.SP);
- }
-
- private u16 FetchRegister(u8 regIndex)
- {
- return regIndex switch
- {
- <= 0x3F => this.V[regIndex],
-
- 0x40 => this.AX,
- 0x41 => (u16) (this.AX >> 8), // High byte of AX
- 0x42 => (u16) (this.AX & 0xFF), // Low byte of AX
-
- 0x43 => this.DX,
- 0x44 => (u16) (this.DX >> 8), // High byte of DX
- 0x45 => (u16) (this.DX & 0xFF), // Low byte of DX
-
- 0x46 => this.LX,
- 0x50 => this.PC,
- 0x51 => this.SP,
-
- _ => throw new InvalidOperationException($"Unknown register index: {regIndex:X2}"),
- };
- }
-
- private void StoreRegister(u8 regIndex, u16 value)
- {
- switch (regIndex)
- {
- case <= 0x3F:
- this.V[regIndex] = value;
- break;
-
- case 0x40:
- this.AX = value;
- break;
- case 0x41:
- this.AX = (u16) ((this.AX & 0x00FF) | (value << 8));
- break; // Set high byte
- case 0x42:
- this.AX = (u16) ((this.AX & 0xFF00) | (value & 0x00FF));
- break; // Set low byte
-
- case 0x43:
- this.DX = value;
- break;
- case 0x44:
- this.DX = (u16) ((this.DX & 0x00FF) | (value << 8));
- break; // Set high byte
- case 0x45:
- this.DX = (u16) ((this.DX & 0xFF00) | (value & 0x00FF));
- break; // Set low byte
-
- case 0x46:
- this.LX = value;
- break;
- case 0x50:
- this.PC = value;
- break;
- case 0x51:
- this.SP = value;
- break;
-
- default:
- throw new InvalidOperationException($"Unknown register index: {regIndex:X2}");
- }
- }
-} \ No newline at end of file
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
diff --git a/Emulator/Chip/Q1CpuInstructions.cs b/Emulator/Chip/Q1CpuInstructions.cs
deleted file mode 100644
index 0041b25..0000000
--- a/Emulator/Chip/Q1CpuInstructions.cs
+++ /dev/null
@@ -1,278 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-using System.Collections.Generic;
-
-public partial class Q1Cpu
-{
- public static Dictionary<u8, string[]> InstructionLookupStrings = new()
- {
- { 0x00, ["NOP", "JMP", "HALT", "MOV"] },
- { 0x01, ["RET", "CALL", "SUS", "MOVB"] },
- { 0x02, ["BZ", "BZ", "BR", "NOP"] },
- { 0x03, ["NOP", "PUSH", "NOP", "NOP"] },
- { 0x04, ["NOP", "POP", "NOP", "NOP"] },
-
- { 0x10, ["INV", "INV", "NOP", "AND"] },
- { 0x11, ["NOP", "NOP", "NOP", "OR"] },
- { 0x12, ["NOP", "NOP", "NOP", "XOR"] },
- { 0x13, ["NOP", "NOP", "NOP", "SHL"] },
- { 0x14, ["NOP", "NOP", "NOP", "SHR"] },
-
- { 0x20, ["NOT", "NOT", "NOP", "CMP"] },
- { 0x21, ["NOP", "NOP", "NOP", "LT"] },
- { 0x22, ["NOP", "NOP", "NOP", "GT"] },
-
- { 0x30, ["INC_AX", "INC", "NOP", "ADD"] },
- { 0x31, ["DEC_AX", "DEC", "NOP", "SUB"] },
- { 0x32, ["NOP", "NOP", "NOP", "DIV"] },
- { 0x33, ["NOP", "NOP", "NOP", "MUL"] },
- { 0x34, ["NOP", "NOP", "NOP", "MOD"] },
- };
-
- public Dictionary<u8, (Action, Action<u8>, Action, Action<u8, u8>)> InstructionLookup;
- private void LoadInstructionLookup()
- {
- this.InstructionLookup = new Dictionary<u8, (Action, Action<u8>, Action, Action<u8, u8>)>
- {
- { 0x00, (this.Instruction_NOP, this.Instruction_JMP, this.Instruction_HALT, this.Instruction_MOV) },
- { 0x01, (this.Instruction_RET, this.Instruction_CALL, this.Instruction_SUS, this.Instruction_MOVB) },
- { 0x02, (this.Instruction_BZ_LX, this.Instruction_BZ, this.Instruction_BR, this.Instruction_NOP) },
- { 0x03, (this.Instruction_NOP, this.Instruction_PUSH, this.Instruction_NOP, this.Instruction_NOP) },
- { 0x04, (this.Instruction_NOP, this.Instruction_POP, this.Instruction_NOP, this.Instruction_NOP) },
-
- { 0x10, (this.Instruction_INV_DX, this.Instruction_INV, this.Instruction_NOP, this.Instruction_AND) },
- { 0x11, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_OR) },
- { 0x12, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_XOR) },
- { 0x13, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_SHL) },
- { 0x14, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_SHR) },
-
- { 0x20, (this.Instruction_NOT_LX, this.Instruction_NOT, this.Instruction_NOP, this.Instruction_CMP) },
- { 0x21, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_LT) },
- { 0x22, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_GT) },
-
- { 0x30, (this.Instruction_INC_AX, this.Instruction_INC, this.Instruction_NOP, this.Instruction_ADD) },
- { 0x31, (this.Instruction_DEC_AX, this.Instruction_DEC, this.Instruction_NOP, this.Instruction_SUB) },
- { 0x32, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_DIV) },
- { 0x33, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_MUL) },
- { 0x34, (this.Instruction_NOP, this.Instruction_NOP, this.Instruction_NOP, this.Instruction_MOD) },
- };
- }
- private void Instruction_ADD(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 + v2);
- this.AX = result;
- }
- private void Instruction_SUB(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 - v2);
- this.AX = result;
- }
- private void Instruction_MUL(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 * v2);
- this.AX = result;
- }
- private void Instruction_DIV(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- if (v2 == 0)
- throw new DivideByZeroException("Cannot perform division by zero.");
- u16 result = (u16) (v1 / v2);
- this.AX = result;
- }
- private void Instruction_MOD(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- if (v2 == 0)
- throw new DivideByZeroException("Cannot perform modulo operation with divisor zero.");
- u16 result = (u16) (v1 % v2);
- this.AX = result;
- }
- private void Instruction_INC(u8 obj)
- {
- var address = this.Address(obj);
- u16 value = address.read();
- address.write((u16) (value + 1));
- }
- private void Instruction_DEC(u8 obj)
- {
- var address = this.Address(obj);
- u16 value = address.read();
- address.write((u16) (value - 1));
- }
- private void Instruction_INC_AX()
- {
- this.AX = (u16) (this.AX + 1);
- }
- private void Instruction_DEC_AX()
- {
- this.AX = (u16) (this.AX - 1);
- }
- private void Instruction_SHL(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
- u16 shifted = (u16) (v1 << v2);
- this.DX = shifted;
- }
- private void Instruction_SHR(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
- u16 shifted = (u16) (v1 >> v2);
- this.DX = shifted;
- }
- private void Instruction_XOR(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 ^ v2);
- this.DX = result;
- }
- private void Instruction_OR(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 | v2);
- this.DX = result;
- }
- private void Instruction_INV(u8 obj)
- {
- var address = this.Address(obj);
- u16 value = address.read();
- u16 result = (u16) ~value;
- this.DX = result;
- }
- private void Instruction_INV_DX()
- {
- this.DX = (u16) ~this.DX;
- }
- private void Instruction_AND(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- u16 result = (u16) (v1 & v2);
- this.DX = result;
- }
- private void Instruction_NOT(u8 obj)
- {
- u16 value = this.Address(obj).read();
- u16 result = value == 0 ? (u16) 1 : (u16) 0;
- this.LX = result;
- }
- private void Instruction_NOT_LX()
- {
- this.LX = this.LX == 0 ? (u16) 1 : (u16) 0;
- }
- private void Instruction_GT(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- this.LX = (u16) (v1 > v2 ? 1 : 0);
- }
- private void Instruction_LT(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- this.LX = (u16) (v1 < v2 ? 1 : 0);
- }
-
- private void Instruction_BR()
- {
- this.FetchInstruction(out _, out _, out _, out u8 length);
- this.PC += length;
- }
- private void Instruction_BZ_LX()
- {
- if (this.LX == 0)
- this.Instruction_BR();
- }
- private void Instruction_BZ(u8 obj)
- {
- u16 value = this.Address(obj).read();
- if (value == 0)
- this.Instruction_BR();
- }
- private void Instruction_CMP(u8 m1, u8 m2)
- {
- u16 v1 = this.Address(m1).read();
- u16 v2 = this.Address(m2).read();
-
- // Set LX based on comparison
- this.LX = (u16) (v1 == v2 ? 1 : 0);
- }
- private void Instruction_MOV(u8 m1, u8 m2)
- {
- u16 value = this.Address(m1).read();
- this.Address(m2).write(value);
- }
-
- private void Instruction_MOVB(u8 m1, u8 m2)
- {
- u16 value = this.Address(m1).read();
- u8 low = Make.ref8(value)[1];
- this.Address(m2).writeByte(low);
- }
-
- public void Instruction_NOP() { }
- public void Instruction_NOP(u8 m1) { }
- public void Instruction_NOP(u8 m1, u8 m2) { }
-
- public void Instruction_JMP(u8 m1)
- {
- this.PC = this.Address(m1).read();
- }
-
- public void Instruction_RET()
- {
- this.PC = this.PopStack();
- }
-
- public void Instruction_CALL(u8 m1)
- {
- u16 address = this.Address(m1).read();
- this.PushStack(this.PC);
- this.PC = address;
- }
-
- public void Instruction_HALT()
- {
- this.AbortRequested = true;
- }
-
- public void Instruction_SUS()
- {
- this.PC -= 2;
- }
-
- public void Instruction_PUSH(u8 m1)
- {
- u16 value = this.Address(m1).read();
- this.PushStack(value);
- }
-
- public void Instruction_POP(u8 m1)
- {
- u16 value = this.PopStack();
- this.Address(m1).write(value);
- }
-} \ No newline at end of file
diff --git a/Emulator/Chip/RamDevice.cs b/Emulator/Chip/RamDevice.cs
deleted file mode 100644
index a40713a..0000000
--- a/Emulator/Chip/RamDevice.cs
+++ /dev/null
@@ -1,33 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-public class RamDevice : BusDevice
-{
- public u8[] Memory;
-
- public RamDevice(u16 start, u16 size) : base(start, (u16) (start + size))
- {
- this.Memory = new u8[size];
- }
-
- public override void Reset()
- {
- this.Memory = new u8[this.AddressableEnd - this.AddressableStart];
- }
-
- public override void Clock()
- {
- // No clocking needed for RAM
- }
-
- public override u8 Read(u16 address)
- {
- u16 relativeAddress = this.GetRelativeAddress(address);
- return this.Memory[relativeAddress];
- }
-
- public override void Write(u16 address, u8 value)
- {
- u16 relativeAddress = this.GetRelativeAddress(address);
- this.Memory[relativeAddress] = value;
- }
-} \ No newline at end of file
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-31 17:28:24 +0000