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Added double buffering 2

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This commit is contained in:
Marc Parsons
2026-04-24 21:52:30 +01:00
parent d7fd5b6ad8
commit 97267bed7a
3 changed files with 3 additions and 2 deletions
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2
Core/Cpu/Z80.cs
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@@ -1596,7 +1596,7 @@ namespace Core.Cpu
if ((n & 0x02) != 0) AF.Low |= 0x20; if ((n & 0x02) != 0) AF.Low |= 0x20;
return 16; return 16;
} }
case 0xA9: // CPD (The opcode that just crashed!) case 0xA9: // CPD
{ {
byte memVal = ReadMemory(HL.Word); byte memVal = ReadMemory(HL.Word);
byte result = (byte)(AF.High - memVal); byte result = (byte)(AF.High - memVal);

2
Core/Io/ULA.cs
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@@ -11,7 +11,7 @@ namespace Core.Io
// The ULA owns the frame buffer now! // The ULA owns the frame buffer now!
public const int ScreenWidth = 320; public const int ScreenWidth = 320;
public const int ScreenHeight = 256; // Perfectly cropped size public const int ScreenHeight = 256; // Perfectly cropped size
public int[] FrameBuffer { get; private set; } public int[] FrameBuffer { get; private set; } = new int[ScreenWidth * ScreenHeight];
public int[] FrontBuffer { get; private set; } = new int[ScreenWidth * ScreenHeight]; public int[] FrontBuffer { get; private set; } = new int[ScreenWidth * ScreenHeight];
private int _ulaFrameCount = 0; private int _ulaFrameCount = 0;

1
Desktop/Form1.cs
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@@ -170,6 +170,7 @@ namespace Desktop
if (scanlineCount % 312 == 0) if (scanlineCount % 312 == 0)
{ {
_cpu.RequestInterrupt(); // 50Hz interrupt _cpu.RequestInterrupt(); // 50Hz interrupt
_ula.CommitFrame();
TotalFrameCount++; TotalFrameCount++;
if (highSpeed) if (highSpeed)