BizHawk/BizHawk.Emulation.Cores/Computers/SinclairSpectrum/Machine/ZXSpectrum48K/ZX48.Screen.cs


namespace BizHawk.Emulation.Cores.Computers.SinclairSpectrum
{
	/// <summary>
	/// 48K ULA
	/// </summary>
	class Screen48 : ULA
	{
		#region Construction

		public Screen48(SpectrumBase machine)
			: base(machine)
		{
			// interrupt
			InterruptStartTime = 3;
			InterruptLength = 32;
			// offsets
			RenderTableOffset = 56;
			ContentionOffset = 6;
			FloatingBusOffset = 1;
			// timing
			ClockSpeed = 3500000;
			FrameCycleLength = 69888;
			ScanlineTime = 224;
			BorderLeftTime = 24;
			BorderRightTime = 24;
			FirstPaperLine = 64;
			FirstPaperTState = 64;
			// screen layout
			Border4T = true;
			Border4TStage = 0;
			ScreenWidth = 256;
			ScreenHeight = 192;
			BorderTopHeight = 48;// 55;// 48;
			BorderBottomHeight = 48;// 56;
			BorderLeftWidth = 48;
			BorderRightWidth = 48;
			ScanLineWidth = BorderLeftWidth + ScreenWidth + BorderRightWidth;

			RenderingTable = new RenderTable(this,
				MachineType.ZXSpectrum48);

			SetupScreenSize();
		}

		#endregion
	}
}