static void SetVesaMode()
{
Registers.ES = 0;
ushort res = VESA.Resolution;
ushort mode = VESA.CGA_Full;
if (res > 320)
{
mode += 3;
}
if (res > 640)
{
mode += 3;
}
if (res > 800)
{
mode += 3;
}
if (res > 1024)
{
mode += 3;
}
if (res > 1280)
{
mode += 3;
}
ushort bpp = VESA.Bpp;
while (mode >= VESA.CGA_High)
{
if (bpp > 16 && VESA.TryMode(mode, VESAInfoAddr, VESAInfoDetailsAddr))
{
return;
}
mode--;
if (VESA.TryMode(mode, VESAInfoAddr, VESAInfoDetailsAddr))
{
return;
}
mode -= 2;
}
// VESA not supported...
Registers.DI = VESAInfoAddr;
new Inline("mov byte [es:di], 'N'");
VESA.SetVGA();
}
public static bool TryMode(ushort mode, ushort pInfo, ushort pInfoDetails)
{
if (!VESA.SetMode((ushort)(mode | VESA.LinearMode)))
{
return(false);
}
if (!VESA.GetInfo(pInfo))
{
return(false);
}
if (!VESA.GetInfoDetails(mode, pInfoDetails))
{
return(false);
}
return(true);
}