/// <summary>
/// Sets the bit.
/// </summary>
/// <param name="bit">The bit.</param>
protected void SetBit(byte bit)
{
switch (bits)
{
case 8: ioPort.Write8(SetBit(ioPort.Read8(), bit)); break;
case 16: ioPort.Write16(SetBit(ioPort.Read16(), bit)); break;
case 32: ioPort.Write32(SetBit(ioPort.Read32(), bit)); break;
}
}
/// <summary>
/// Performs the LBA28.
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="drive">The drive NBR.</param>
/// <param name="lba">The lba.</param>
/// <param name="data">The data.</param>
/// <param name="offset">The offset.</param>
/// <returns></returns>
protected bool PerformLBA28(SectorOperation operation, uint drive, uint lba, byte[] data, uint offset)
{
if (drive > MaximunDriveCount)
{
return(false);
}
FeaturePort.Write8(0);
SectorCountPort.Write8(1);
LBALowPort.Write8((byte)(lba & 0xFF));
LBAMidPort.Write8((byte)((lba >> 8) & 0xFF));
LBAHighPort.Write8((byte)((lba >> 16) & 0xFF));
DeviceHeadPort.Write8((byte)(0xE0 | (drive << 4) | ((lba >> 24) & 0x0F)));
if (operation == SectorOperation.Write)
{
CommandPort.Write8(IDECommands.WriteSectorsWithRetry);
}
else
{
CommandPort.Write8(IDECommands.ReadSectorsWithRetry);
}
if (!WaitForReqisterReady())
{
return(false);
}
BinaryFormat sector = new BinaryFormat(data);
//TODO: Don't use PIO
if (operation == SectorOperation.Read)
{
for (uint index = 0; index < 256; index++)
{
sector.SetUShort(offset + (index * 2), DataPort.Read16());
}
}
else
{
for (uint index = 0; index < 256; index++)
{
DataPort.Write16(sector.GetUShort(offset + (index * 2)));
}
}
return(true);
}
/// <summary>
/// Reads from configuraton space
/// </summary>
/// <param name="bus">The bus.</param>
/// <param name="slot">The slot.</param>
/// <param name="function">The function.</param>
/// <param name="register">The register.</param>
/// <returns></returns>
public ushort ReadConfig16(byte bus, byte slot, byte function, byte register)
{
configAddress.Write32(GetIndex(bus, slot, function, register));
return(configData.Read16());
}