private bool DetectIT87(LPCPort port)
{
// IT87XX can enter only on port 0x2E
if (port.RegisterPort != 0x2E)
{
return(false);
}
port.IT87Enter();
ushort chipID = port.ReadWord(CHIP_ID_REGISTER);
Chip chip;
switch (chipID)
{
case 0x8620: chip = Chip.IT8620E; break;
case 0x8628: chip = Chip.IT8628E; break;
case 0x8705: chip = Chip.IT8705F; break;
case 0x8712: chip = Chip.IT8712F; break;
case 0x8716: chip = Chip.IT8716F; break;
case 0x8718: chip = Chip.IT8718F; break;
case 0x8720: chip = Chip.IT8720F; break;
case 0x8721: chip = Chip.IT8721F; break;
case 0x8726: chip = Chip.IT8726F; break;
case 0x8728: chip = Chip.IT8728F; break;
case 0x8771: chip = Chip.IT8771E; break;
case 0x8772: chip = Chip.IT8772E; break;
default: chip = Chip.Unknown; break;
}
if (chip == Chip.Unknown)
{
if (chipID != 0 && chipID != 0xffff)
{
port.IT87Exit();
ReportUnknownChip(port, "ITE", chipID);
}
}
else
{
port.Select(IT87_ENVIRONMENT_CONTROLLER_LDN);
ushort address = port.ReadWord(BASE_ADDRESS_REGISTER);
Thread.Sleep(1);
ushort verify = port.ReadWord(BASE_ADDRESS_REGISTER);
byte version = (byte)(port.ReadByte(IT87_CHIP_VERSION_REGISTER) & 0x0F);
ushort gpioAddress;
ushort gpioVerify;
if (chip == Chip.IT8705F)
{
port.Select(IT8705_GPIO_LDN);
gpioAddress = port.ReadWord(BASE_ADDRESS_REGISTER);
Thread.Sleep(1);
gpioVerify = port.ReadWord(BASE_ADDRESS_REGISTER);
}
else
{
port.Select(IT87XX_GPIO_LDN);
gpioAddress = port.ReadWord(BASE_ADDRESS_REGISTER + 2);
Thread.Sleep(1);
gpioVerify = port.ReadWord(BASE_ADDRESS_REGISTER + 2);
}
port.IT87Exit();
if (address != verify || address < 0x100 || (address & 0xF007) != 0)
{
report.Append("Chip ID: 0x");
report.AppendLine(chip.ToString("X"));
report.Append("Error: Invalid address 0x");
report.AppendLine(address.ToString("X",
CultureInfo.InvariantCulture));
report.AppendLine();
return(false);
}
if (gpioAddress != gpioVerify || gpioAddress < 0x100 ||
(gpioAddress & 0xF007) != 0)
{
report.Append("Chip ID: 0x");
report.AppendLine(chip.ToString("X"));
report.Append("Error: Invalid GPIO address 0x");
report.AppendLine(gpioAddress.ToString("X",
CultureInfo.InvariantCulture));
report.AppendLine();
return(false);
}
superIOs.Add(new IT87XX(chip, address, gpioAddress, version));
return(true);
}
return(false);
}
