parsons/ParsonsMasterSystem2026
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Implemenmted rendering priorities

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This commit is contained in:
Marc Parsons
2026-05-12 00:30:28 +01:00
parent f825e102a2
commit 95ac0ec7c1
5 changed files with 125 additions and 55 deletions
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10
Desktop/DebuggerForm.cs
View File

@@ -10,9 +10,9 @@ namespace Desktop
{
private readonly Z80 _cpu;
private readonly SmsMemoryBus _memoryBus;
private readonly Form1 _mainForm;
private readonly ParsonsForm1 _mainForm;
public DebuggerForm(Z80 cpu, SmsMemoryBus memoryBus, Form1 mainForm)
public DebuggerForm(Z80 cpu, SmsMemoryBus memoryBus, ParsonsForm1 mainForm)
{
InitializeComponent();
_cpu = cpu;
@@ -103,9 +103,9 @@ namespace Desktop
lblIE.Text = $"Interrupt Mode: {_cpu.InterruptMode}";
lblFlags.Text = $"Flags: {_cpu.GetFlagsString()}";
lblTStates.Text = $"T-States: {_cpu.TotalTStates}";
//lblFrames.Text = $"Frames Rendered: {_mainForm.TotalFrameCount}";
//lblFrameTime.Text = $"Frame Time: {((float)_mainForm.FrameTime):F1}ms";
//lblFPS.Text = $"FPS: {_mainForm.FramesPerSecond:F2}";
lblFrames.Text = $"Frames Rendered: {_mainForm.TotalFrameCount}";
lblFrameTime.Text = $"Frame Time: {((float)_mainForm.FrameTime):F1}ms";
lblFPS.Text = $"FPS: {_mainForm.FramesPerSecond:F2}";
UpdateMemoryView();
UpdateStackView();
UpdateDisassemblyView();

20
Desktop/Form1.Designer.cs generated
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@@ -1,6 +1,6 @@
namespace Desktop
{
partial class Form1
partial class ParsonsForm1
{
/// <summary>
/// Required designer variable.
@@ -49,7 +49,7 @@
//
pbScreen.Location = new Point(12, 36);
pbScreen.Name = "pbScreen";
pbScreen.Size = new Size(762, 672);
pbScreen.Size = new Size(768, 576);
pbScreen.SizeMode = PictureBoxSizeMode.Zoom;
pbScreen.TabIndex = 1;
pbScreen.TabStop = false;
@@ -60,7 +60,7 @@
menuStrip1.Items.AddRange(new ToolStripItem[] { fileToolStripMenuItem, viewToolStripMenuItem, machineToolStripMenuItem, helpToolStripMenuItem });
menuStrip1.Location = new Point(0, 0);
menuStrip1.Name = "menuStrip1";
menuStrip1.Size = new Size(785, 33);
menuStrip1.Size = new Size(791, 33);
menuStrip1.TabIndex = 2;
menuStrip1.Text = "menuStrip1";
//
@@ -75,27 +75,27 @@
//
openToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { includedToolStripMenuItem, selectROMToolStripMenuItem1 });
openToolStripMenuItem.Name = "openToolStripMenuItem";
openToolStripMenuItem.Size = new Size(270, 34);
openToolStripMenuItem.Size = new Size(158, 34);
openToolStripMenuItem.Text = "Open";
//
// includedToolStripMenuItem
//
includedToolStripMenuItem.Name = "includedToolStripMenuItem";
includedToolStripMenuItem.Size = new Size(270, 34);
includedToolStripMenuItem.Size = new Size(218, 34);
includedToolStripMenuItem.Text = "Included";
includedToolStripMenuItem.Click += includedToolStripMenuItem_Click;
//
// selectROMToolStripMenuItem1
//
selectROMToolStripMenuItem1.Name = "selectROMToolStripMenuItem1";
selectROMToolStripMenuItem1.Size = new Size(270, 34);
selectROMToolStripMenuItem1.Size = new Size(218, 34);
selectROMToolStripMenuItem1.Text = "Select ROM...";
selectROMToolStripMenuItem1.Click += selectROMToolStripMenuItem_Click;
//
// exitToolStripMenuItem
//
exitToolStripMenuItem.Name = "exitToolStripMenuItem";
exitToolStripMenuItem.Size = new Size(270, 34);
exitToolStripMenuItem.Size = new Size(158, 34);
exitToolStripMenuItem.Text = "Exit";
exitToolStripMenuItem.Click += exitToolStripMenuItem_Click;
//
@@ -140,16 +140,16 @@
aboutToolStripMenuItem.Size = new Size(164, 34);
aboutToolStripMenuItem.Text = "About";
//
// Form1
// ParsonsForm1
//
AutoScaleDimensions = new SizeF(10F, 25F);
AutoScaleMode = AutoScaleMode.Font;
ClientSize = new Size(785, 719);
ClientSize = new Size(791, 622);
Controls.Add(pbScreen);
Controls.Add(menuStrip1);
MainMenuStrip = menuStrip1;
Margin = new Padding(4);
Name = "Form1";
Name = "ParsonsForm1";
Text = "Form1";
((System.ComponentModel.ISupportInitialize)pbScreen).EndInit();
menuStrip1.ResumeLayout(false);

90
Desktop/Form1.cs
View File

@@ -1,22 +1,26 @@
using System.Diagnostics;
using System.Drawing.Imaging;
using System.Reflection;
using System.Reflection.PortableExecutable;
using Core;
using System.Threading.Tasks;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using System.Windows.Forms;
using Core;
namespace Desktop
{
public partial class Form1 : Form
public partial class ParsonsForm1 : Form
{
private SmsMachine _machine = null!;
private DebuggerForm _debugger;
private Bitmap _screenBitmap = new Bitmap(256, 192, PixelFormat.Format32bppArgb);
private Task _emulatorTask;
private double TargetFrameTime = 16.667f;
public int TotalFrameCount = 0;
public double FrameTime { get; private set; } = 0;
public double FramesPerSecond { get; private set; } = 0;
private string _currentRomName = "No ROM";
private Stopwatch _stopwatch = new System.Diagnostics.Stopwatch();
public bool IsRunning { get; private set; } = false;
public ushort? Breakpoint
@@ -25,9 +29,10 @@ namespace Desktop
set { if (_machine != null) _machine.Breakpoint = value; }
}
public Form1()
public ParsonsForm1()
{
InitializeComponent();
this.Text = $"Parsons Master System 2026 - {_currentRomName}";
_machine = new SmsMachine();
PopulateIncludedRomsMenu();
@@ -46,32 +51,81 @@ namespace Desktop
// Update the PictureBox
pbScreen.Image = _screenBitmap;
TotalFrameCount++;
}
public void StartEmulator()
{
if (IsRunning) return;
IsRunning = true;
TotalFrameCount = 0;
double TargetFrameTime = 1000.0 / 60.0;
_emulatorTask = Task.Run(() =>
{
_stopwatch.Restart();
double nextFrameTargetTime = _stopwatch.Elapsed.TotalMilliseconds + TargetFrameTime;
double lastFpsUpdate = _stopwatch.Elapsed.TotalMilliseconds;
int framesThisSecond = 0;
while (IsRunning)
{
// Mark exactly when the emulator starts thinking
double frameStartTime = _stopwatch.Elapsed.TotalMilliseconds;
// 1. Do the heavy lifting (Z80 and VDP)
_machine.RunFrame();
Invoke((System.Windows.Forms.MethodInvoker)delegate { DrawScreen(); });
// 2. FIRE AND FORGET! Tell Windows to draw, but DO NOT WAIT for it to finish!
BeginInvoke((System.Windows.Forms.MethodInvoker)delegate { DrawScreen(); });
// Safety catch: If we hit a breakpoint while running, stop the loop!
// 3. Safety catch
if (_machine.Breakpoint.HasValue && _machine.Cpu.PC == _machine.Breakpoint.Value)
{
IsRunning = false;
// Optional: Force the debugger UI to update immediately so you see it!
Invoke((System.Windows.Forms.MethodInvoker)delegate { _debugger?.uiUpdateTimer_Tick(null, EventArgs.Empty); });
BeginInvoke((System.Windows.Forms.MethodInvoker)delegate { _debugger?.uiUpdateTimer_Tick(null, EventArgs.Empty); });
break;
}
else
// 4. Calculate TRUE Frame Time (Compute Time) BEFORE we go to sleep!
FrameTime = _stopwatch.Elapsed.TotalMilliseconds - frameStartTime;
// --- HIGH PRECISION THROTTLE ---
while (_stopwatch.Elapsed.TotalMilliseconds < nextFrameTargetTime)
{
// Only throttle the speed if we are actively running
Thread.Sleep(8);
if (nextFrameTargetTime - _stopwatch.Elapsed.TotalMilliseconds > 2.0)
{
Thread.Sleep(1);
}
else
{
Thread.SpinWait(10);
}
}
// --- METRICS MATH ---
double currentTime = _stopwatch.Elapsed.TotalMilliseconds;
TotalFrameCount++;
framesThisSecond++;
if (currentTime - lastFpsUpdate >= 1000.0)
{
FramesPerSecond = framesThisSecond / ((currentTime - lastFpsUpdate) / 1000.0);
framesThisSecond = 0;
lastFpsUpdate = currentTime;
BeginInvoke((System.Windows.Forms.MethodInvoker)delegate {
this.Text = $"Parsons Master System - {_currentRomName} [FPS/FT: {FramesPerSecond:F0}/{FrameTime:F1}]";
});
}
nextFrameTargetTime += TargetFrameTime;
if (currentTime > nextFrameTargetTime + TargetFrameTime)
{
nextFrameTargetTime = currentTime + TargetFrameTime;
}
}
});
@@ -102,8 +156,8 @@ namespace Desktop
// 3. Jam it into the Sega Mapper
_machine.LoadCartridge(rom);
// 4. Update the Window title so it looks professional
this.Text = $"Parsons Master System 2026 - {Path.GetFileNameWithoutExtension(filePath)}";
_currentRomName = Path.GetFileNameWithoutExtension(filePath);
this.Text = $"Parsons Master System - {_currentRomName}";
// 5. Turn the power on!

2
Desktop/Program.cs
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@@ -11,7 +11,7 @@ namespace Desktop
// To customize application configuration such as set high DPI settings or default font,
// see https://aka.ms/applicationconfiguration.
ApplicationConfiguration.Initialize();
Application.Run(new Form1());
Application.Run(new ParsonsForm1());
}
}
}