// set current video mode
public static void SetMode(VGAMode mode)
{
// set mode id
ModeID = mode;
// set mode
switch (mode)
{
// 80x25 text mode
case VGAMode.Text80x25:
{
SetModeProperties(80, 25, 4, true, false);
fixed(byte *ptr = VGAModeRegisters.Mode80x25_Text)
{
WriteRegisters(ptr);
}
SetFont(VGAFontData.Font8x16_Data, 16);
SetColorPalette(Palette16);
break;
}
// 80x50 text mode
case VGAMode.Text80x50:
{
SetModeProperties(80, 50, 4, true, false);
fixed(byte *ptr = VGAModeRegisters.Mode80x50_Text)
{
WriteRegisters(ptr);
}
SetFont(VGAFontData.Font8x8_Data, 8);
SetColorPalette(Palette16);
break;
}
// 90x60 text mode
case VGAMode.Text90x60:
{
SetModeProperties(90, 60, 4, true, false);
fixed(byte *ptr = VGAModeRegisters.Mode90x60_Text)
{
WriteRegisters(ptr);
}
SetFont(VGAFontData.Font8x8_Data, 8);
SetColorPalette(Palette16);
break;
}
// 320x200 graphics mode
case VGAMode.Pixel320x200:
{
SetModeProperties(320, 200, 8, false, false);
fixed(byte *ptr = VGAModeRegisters.Mode320x200x256_Pixel)
{
WriteRegisters(ptr);
}
ClearColorPalette();
SetColorPalette(Palette256);
break;
}
// 320x200 double buffered graphics mode
case VGAMode.Pixel320x200DB:
{
SetModeProperties(320, 200, 8, false, true);
fixed(byte *ptr = VGAModeRegisters.Mode320x200x256_Pixel)
{
WriteRegisters(ptr);
}
ClearColorPalette();
SetColorPalette(Palette256);
break;
}
// default to 80x25 text mode
default: { break; }
}
// clear the screen
Clear(0);
}
// initialization
public static void Initialize(VGAMode mode)
{
SetMode(mode);
}
