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-rw-r--r--Emulator/Chip/DebugDevice.cs13
-rw-r--r--Emulator/Chip/DisplayDevice.cs50
-rw-r--r--Emulator/Chip/HIDDevice.cs36
-rw-r--r--Emulator/Chip/Q1Cpu.cs4
4 files changed, 72 insertions, 31 deletions
diff --git a/Emulator/Chip/DebugDevice.cs b/Emulator/Chip/DebugDevice.cs
deleted file mode 100644
index 4e869bb..0000000
--- a/Emulator/Chip/DebugDevice.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-namespace Q1.Emulator.Chip;
-
-using System;
-
-public class DebugDevice(u16 addressPoint)
- : BusDevice(addressPoint, (u16) (addressPoint + 2))
-{
- public override u8 Read(u16 address) => throw new Exception("DebugDevice.Read not permitted");
- public override void Write(u16 address, u8 value)
- {
- Console.WriteLine($"DebugDevice.Write: x{value:X4} b{value:b8}");
- }
-} \ No newline at end of file
diff --git a/Emulator/Chip/DisplayDevice.cs b/Emulator/Chip/DisplayDevice.cs
index a18dbd4..c8889ba 100644
--- a/Emulator/Chip/DisplayDevice.cs
+++ b/Emulator/Chip/DisplayDevice.cs
@@ -6,31 +6,39 @@ using Microsoft.Xna.Framework.Graphics;
public class DisplayDevice : RamDevice
{
- public Texture2D? OutputTexture;
- private readonly u16 _paletteSize;
- private readonly u16 _displayWidth;
- private readonly u16 _displayHeight;
- private Color[] textureData;
+ public Texture2D? OutputTexture;
+
+ private readonly u16 _paletteSize;
+ private readonly u16 _displayWidth;
+ private readonly u16 _displayHeight;
+
+ private Color[] textureData;
+ private Color[] palette;
+ private bool _paletteDirty;
public DisplayDevice(u16 paletteSize, u16 displayWidth, u16 displayHeight, u16 addressableStart)
- : base(addressableStart, DisplayDevice.DetermineSize(paletteSize, displayWidth, displayHeight))
+ : base(
+ addressableStart, DisplayDevice.DetermineSize(paletteSize, displayWidth, displayHeight))
{
- this._paletteSize = paletteSize;
- this._displayWidth = displayWidth;
+ this._paletteSize = paletteSize;
+ this._displayWidth = displayWidth;
this._displayHeight = displayHeight;
- this.textureData = new Color[this._displayWidth * this._displayHeight];
+ this.textureData = new Color[this._displayWidth * this._displayHeight];
}
- private static u16 DetermineSize(u16 paletteSize, u16 displayWidth, u16 displayHeight)
+ public static u16 DetermineSize(u16 paletteSize, u16 displayWidth, u16 displayHeight)
{
return (u16) ((paletteSize * 3) + (displayWidth * displayHeight));
}
public override void Clock()
{
- Color[] palette = this.ReadPalette();
- ref8 pixelData = this.Memory.AsSpan((u16) (this._paletteSize * 3), (u16) (this._displayWidth * this._displayHeight));
- // Console.WriteLine($"DisplayDevice.Clock: @{(this.AddressableStart + this._paletteSize * 3):X4} palette size={this._paletteSize} display size={this._displayWidth}x{this._displayHeight}");
+ 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];
@@ -41,7 +49,7 @@ public class DisplayDevice : RamDevice
this.OutputTexture.SetData(this.textureData);
}
- private Color[] ReadPalette()
+ private void ReadPalette()
{
ref8 paletteData = this.Memory.AsSpan(0, (u16) (this._paletteSize * 3));
Color[] colors = new Color[this._paletteSize + 1];
@@ -56,7 +64,8 @@ public class DisplayDevice : RamDevice
colors[(u16) (i + 1)] = new Color(r, g, b);
}
- return colors;
+ this._paletteDirty = false;
+ this.palette = colors;
}
public void SetPalette(Color[] palette)
@@ -68,9 +77,18 @@ public class DisplayDevice : RamDevice
for (u16 i = 0; i < this._paletteSize; i++)
{
u16 offset = (u16) (i * 3);
- paletteData[offset] = palette[i].R;
+ 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/HIDDevice.cs b/Emulator/Chip/HIDDevice.cs
new file mode 100644
index 0000000..87bb2c3
--- /dev/null
+++ b/Emulator/Chip/HIDDevice.cs
@@ -0,0 +1,36 @@
+namespace Q1.Emulator.Chip;
+
+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(addr);
+
+ if (pressed)
+ value |= (u8) (1 << bit);
+ else
+ value &= (u8) ~(1 << bit);
+
+ this.Write((u16) (this.AddressableStart + addr), value);
+ }
+} \ No newline at end of file
diff --git a/Emulator/Chip/Q1Cpu.cs b/Emulator/Chip/Q1Cpu.cs
index 7f60ca6..81f9908 100644
--- a/Emulator/Chip/Q1Cpu.cs
+++ b/Emulator/Chip/Q1Cpu.cs
@@ -47,8 +47,8 @@ public partial class Q1Cpu
}
u16 instruction = this.FetchInstruction(out u8 op, out u8 m1, out u8 m2, out _);
- if (instruction != 0x0101)
- Console.WriteLine($"CPU.Clock: {pc:X4} | {Disassembler.ParseInstruction(instruction)}");
+ // if (instruction != 0x0101)
+ // Console.WriteLine($"CPU.Clock: {pc:X4} | {Disassembler.ParseInstruction(instruction)}");
bool ex = m2 > 0;
switch (m1, ex)
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-31 18:05:42 +0000