Chip6569.cs

namespace BizHawk.Emulation.Cores.Computers.Commodore64.MOS
{
	// vic pal
	public static class Chip6569
	{
	    private static readonly int Cycles = 63;
	    private static readonly int ScanWidth = Cycles * 8;
	    private static readonly int Lines = 312;
	    private static readonly int VblankStart = 0x120 % Lines;
	    private static readonly int VblankEnd = 0x00F % Lines;
	    private static readonly int HblankOffset = 24;
	    private static readonly int HblankStart = (0x178 + HblankOffset) % ScanWidth;
	    private static readonly int HblankEnd = (0x1F0 + HblankOffset) % ScanWidth;

	    private static readonly int[] Timing = Vic.TimingBuilder_XRaster(0x194, 0x1F8, ScanWidth, -1, -1);
	    private static readonly int[] Fetch = Vic.TimingBuilder_Fetch(Timing, 0x164);
	    private static readonly int[] Ba = Vic.TimingBuilder_BA(Fetch);
	    private static readonly int[] Act = Vic.TimingBuilder_Act(Timing, 0x004, 0x14C, 0x164);

	    private static readonly int[][] Pipeline = {
				Timing,
				Fetch,
				Ba,
				Act
			};

		public static Vic Create(C64.BorderType borderType)
		{
			return new Vic(
				Cycles, Lines,
				Pipeline,
				17734472 / 18,
				HblankStart, HblankEnd,
				VblankStart, VblankEnd,
                borderType,
                7375, 7882
				);
		}
	}
}