/// <summary>
/// Builds up current scanline character information
/// Ther GA modifies HSYNC and VSYNC signals before they are sent to the monitor
/// This is handled here
/// Runs at 1Mhz
/// </summary>
private void GACharacterCycle()
{
if (CRCT.VSYNC && CRCT.HSYNC)
{
// both hsync and vsync active
CurrentLine.AddCharacter(Phase.HSYNCandVSYNC);
}
else if (CRCT.VSYNC)
{
// vsync is active but hsync is not
CurrentLine.AddCharacter(Phase.VSYNC);
}
else if (CRCT.HSYNC)
{
// hsync is active but vsync is not
CurrentLine.AddCharacter(Phase.HSYNC);
}
else if (!CRCT.DISPTMG)
{
// border generation
CurrentLine.AddCharacter(Phase.BORDER);
}
else if (CRCT.DISPTMG)
{
// pixels generated from video RAM
CurrentLine.AddCharacter(Phase.DISPLAY);
}
}