public void UlaNextControlRegisterSetsActivePaletteForUlaNextSecond()
{
// --- Arrange
var nfs = new NextFeatureSetDevice();
// --- Act
nfs.UlaNextControlRegister.Write(0x40);
// --- Assert
nfs.ActivePalette.ShouldBeSameAs(nfs.UlaNextSecondPalette);
}
public void PaletteRegistersAreInitializedProperly()
{
// --- Act
var nfs = new NextFeatureSetDevice();
// --- Assert
nfs.PaletteIndexRegister.LastValue.ShouldBe((byte)0);
nfs.PaletteValueRegister.LastValue.ShouldBe((byte)0);
nfs.UlaNextControlRegister.LastValue.ShouldBe((byte)0);
nfs.UlaNextPaletteExtensionRegister.LastValue.ShouldBe((byte)0);
nfs.ActivePalette.ShouldBeSameAs(nfs.UlaNextFirstPalette);
}
public void SinglePaletteValueSettingWith8BitWorks(int index, int rgb, int expIndex, int expRgb)
{
// --- Arrange
var nfs = new NextFeatureSetDevice();
nfs.UlaNextControlRegister.Write(0x00);
// --- Act
nfs.PaletteIndexRegister.Write((byte)index);
nfs.PaletteValueRegister.Write((byte)rgb);
// --- Assert
nfs.ActivePalette[(byte)index].ShouldBe(expRgb);
nfs.PaletteIndexRegister.LastValue.ShouldBe((byte)expIndex);
}
public void FullPaletteValueSettingWith8BitWorks(int shift)
{
// --- Arrange
var nfs = new NextFeatureSetDevice();
nfs.UlaNextControlRegister.Write(0x00);
// --- Act
nfs.PaletteIndexRegister.Write((byte)shift);
for (var i = 0x00; i <= 0xFF; i++)
{
nfs.PaletteValueRegister.Write((byte)i);
}
// --- Assert
for (var i = 0x00; i <= 0xFF; i++)
{
var expColor = (byte)(i - shift) * 2 | (((byte)(i - shift) & 0x03) == 0 ? 0 : 1);
nfs.ActivePalette[(byte)i].ShouldBe(expColor);
}
}
