/// <summary>
/// Disables the data received interrupt.
/// </summary>
public void DisableDataReceivedInterrupt()
{
IER ier = (IER)(ierBase.Read8());
ier &= ~IER.DR;
ierBase.Write8((byte)ier);
}
/// <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>
/// Gets the palette.
/// </summary>
/// <param name="colorIndex">Index of the color.</param>
/// <returns></returns>
public Color GetPalette(byte colorIndex)
{
Color color = new Color();
dacPaletteMask.Write8(0xFF);
dacIndexRead.Write8(colorIndex);
color.Red = dacData.Read8();
color.Green = dacData.Read8();
color.Blue = dacData.Read8();
return(color);
}
/// <summary>
/// Writes the settings.
/// </summary>
/// <param name="settings">The settings.</param>
protected void WriteSettings(byte[] settings)
{
// Write MISCELLANEOUS reg
miscellaneousOutputWrite.Write8(settings[0]);
// Write SEQUENCER regs
for (byte i = 0; i < 5; i++)
{
sequencerAddress.Write8(i);
sequencerData.Write8(settings[1 + i]);
}
// Unlock CRTC registers
crtControllerIndexColor.Write8(0x03);
crtControllerDataColor.Write8((byte)(crtControllerData.Read8() | 0x80));
crtControllerIndexColor.Write8(0x11);
crtControllerDataColor.Write8((byte)(crtControllerData.Read8() & 0x7F));
// Make sure they remain unlocked
settings[0x03] = (byte)(settings[0x03] | 0x80);
settings[0x11] = (byte)(settings[0x11] & 0x7F);
// Write CRTC regs
for (byte i = 0; i < 25; i++)
{
crtControllerIndexColor.Write8(i);
crtControllerDataColor.Write8(settings[6 + i]);
}
// Write GRAPHICS CONTROLLER regs
for (byte i = 0; i < 9; i++)
{
graphicsControllerAddress.Write8(i);
graphicsControllerData.Write8(settings[31 + i]);
}
// Write ATTRIBUTE CONTROLLER regs
for (byte i = 0; i < 21; i++)
{
inputStatus1ReadB.Read8();
attributeAddress.Write8(i);
attributeAddress.Write8(settings[40 + i]); // TODO: Double check
}
// Lock 16-color palette and unblank display */
inputStatus1ReadB.Read8();
attributeAddress.Write8(0x20);
}
/// <summary>
/// Reads in the sequence register's current value. The register is chosen by
/// the given index.
/// </summary>
/// <param name="index">The index to the register</param>
/// <returns>The register's value</returns>
private byte ReadSequenceRegister(byte index)
{
// Select register
seqControllerIndex.Write8(index);
// Read contained value
return(seqControllerData.Read8());
}
/// <summary>
/// Starts this hardware device.
/// </summary>
/// <returns></returns>
public override DeviceDriverStartStatus Start()
{
WriteSettings(VGAText80x25);
colorMode = ((miscellaneousOutput.Read8() & 1) == 1);
if (colorMode)
{
offset = 0x8000;
bytePerChar = 2;
activeControllerIndex = crtControllerIndexColor;
activeControllerData = crtControllerDataColor;
}
else
{
offset = 0x0;
bytePerChar = 1;
activeControllerIndex = crtControllerIndex;
activeControllerData = crtControllerData;
}
width = GetValue(CRTCommands.HorizontalDisplayEnableEnd);
height = GetValue(CRTCommands.VerticalDisplayEnableEnd);
width++;
height = 25;
base.deviceStatus = DeviceStatus.Online;
return(DeviceDriverStartStatus.Started);
}
/// <summary>
/// Reads the scan code from the device
/// </summary>
protected void ReadScanCode()
{
spinLock.Enter();
AddToFIFO(commandPort.Read8());
spinLock.Exit();
}
protected void DetectDrives()
{
CMOSComand.Write8(0x10);
byte types = CMOSResponse.Read8();
floppyDrives[0] = DetermineByType((byte)(types >> 4));
floppyDrives[1] = DetermineByType((byte)(types & 0xF));
}
/// <summary>
/// Reads the specified address.
/// </summary>
/// <param name="address">The address.</param>
/// <returns></returns>
public byte Read(byte address)
{
spinLock.Enter();
commandPort.Write8(address);
byte b = dataPort.Read8();
spinLock.Exit();
return(b);
}
/// <summary>
/// Probes this instance.
/// </summary>
/// <returns></returns>
public bool Probe()
{
LBALowPort.Write8(0x88);
if (LBALowPort.Read8() != 0x88)
{
return(false);
}
return(true);
}
/// <summary>
/// Turns the on motor.
/// </summary>
/// <param name="drive">The drive.</param>
protected void TurnOnMotor(uint drive)
{
byte reg = commandPort.Read8();
byte bits = (byte)(DORFlags.MotorShift << (byte)drive | DORFlags.EnableDMA | DORFlags.EnableController | (byte)drive);
if (reg != bits)
{
commandPort.Write8(bits);
HAL.Sleep(500); // 500 msec
}
}
/// <summary>
/// Reads the scan code from the device
/// </summary>
protected void ReadScanCode()
{
spinLock.Enter();
byte v = commandPort.Read8();
AddToFIFO(v);
HAL.DebugWrite(" scancode: " + v.ToString() + " ");
spinLock.Exit();
}
protected void TurnOnMotor(uint drive)
{
byte reg = ControllerCommands.Read8();
byte bits = (byte)(DORFlags.MotorShift << (byte)drive | DORFlags.EnableDMA | DORFlags.EnableController | (byte)drive);
if (reg != bits)
{
///TextMode.WriteLine("..Motor On");
ControllerCommands.Write8(bits);
Timer.Delay(500); // 500 msec
}
}
/// <summary>
/// Starts this hardware device.
/// </summary>
/// <returns></returns>
public override DeviceDriverStartStatus Start()
{
vgaEnableController.Write8((byte)(vgaEnableController.Read8() | 0x01));
// Enable colors
miscOutputWriter.Write8((byte)(miscOutputReader.Read8() | 0x01));
// Enable MMIO
crtcControllerIndex.Write8(0x53);
crtcControllerData.Write8((byte)(crtcControllerData.Read8() | 0x8));
// Unlock system registers
WriteCrtcRegister(0x38, 0x48);
WriteCrtcRegister(0x39, 0xa5);
WriteCrtcRegister(0x40, 0x01, 0x01);
WriteCrtcRegister(0x35, 0x00, 0x30);
WriteCrtcRegister(0x33, 0x20, 0x72);
WriteCrtcRegister(0x86, 0x80);
WriteCrtcRegister(0x90, 0x00);
// Detect number of MB of installed RAM
byte[] ramSizes = new byte[] { 4, 0, 3, 8, 2, 6, 1, 0 };
int ramSizeMB = ramSizes[(ReadCrtcRegister(0x36) >> 5) & 0x7];
// Setup video memory
memory = base.hardwareResources.GetMemory((byte)(ramSizeMB * 1024 * 1024));
// Detect current mclk
WriteSequenceRegister(0x08, 0x06);
byte m = (byte)(ReadSequenceRegister(0x11) & 0x7f);
byte n = ReadSequenceRegister(0x10);
byte n1 = (byte)(n & 0x1f);
byte n2 = (byte)((n >> 5) & 0x03);
base.deviceStatus = DeviceStatus.Online;
return(DeviceDriverStartStatus.Started);
}
/// <summary>
/// Waits for register ready.
/// </summary>
/// <returns></returns>
protected bool WaitForReqisterReady()
{
// wait for RQM data register to be ready
while (true)
{
uint status = statusPort.Read8();
if ((status & 0x80) == 0x80)
{
return(true);
}
//TODO: add timeout check
}
//return false;
}
/// <summary>
/// Starts this hardware device.
/// </summary>
/// <returns></returns>
public override DeviceDriverStartStatus Start()
{
byte masterMask;
byte slaveMask;
// Save Masks
masterMask = masterDataPort.Read8();
slaveMask = slaveDataPort.Read8();
// ICW1 - Set Initialize Controller & Expect ICW4
masterCommandPort.Write8(0x11);
// ICW2 - interrupt offset
masterDataPort.Write8(MasterIRQBase);
// ICW3
masterDataPort.Write8(0x04);
// ICW4 - Set 8086 Mode
masterDataPort.Write8(0x01);
// ICW1 - Set Initialize Controller & Expect ICW4
slaveCommandPort.Write8(0x11);
// ICW2 - interrupt offset
slaveDataPort.Write8(SlaveIRQBase);
// ICW3
slaveDataPort.Write8(0x02);
// ICW4 - Set 8086 Mode
slaveDataPort.Write8(0x01);
// Restore Masks
masterDataPort.Write8(masterMask);
slaveDataPort.Write8(slaveMask);
DisableIRQs();
base.deviceStatus = DeviceStatus.Online;
return(DeviceDriverStartStatus.Started);
}
public void Initialize()
{
spinLock.Enter();
//IdeIRQ = base.CreateIRQHandler (14);
for (int drive = 0; drive < DrivesPerConroller; drive++)
{
driveInfo[drive].Present = false;
driveInfo[drive].MaxLBA = 0;
}
TextMode.Write(base.name);
TextMode.Write(": ");
LBALowPort.Write8(0x88);
if (LBALowPort.Read8() != 0x88)
{
base.deviceStatus = DeviceStatus.NotFound;
TextMode.WriteLine("IDE controller not found at 0x" + ((uint)ioBase).ToString("X"));
return;
}
TextMode.WriteLine("IDE controller found at 0x" + ((uint)ioBase).ToString("X"));
DeviceHeadPort.Write8(0xA0);
Timer.Delay(1000 / 250); // wait 1/250th of a second
if ((StatusPort.Read8() & 0x40) == 0x40)
{
driveInfo[0].Present = true;
}
DeviceHeadPort.Write8(0xB0);
Timer.Delay(1000 / 250); // wait 1/250th of a second
if ((StatusPort.Read8() & 0x40) == 0x40)
{
driveInfo[1].Present = true;
}
for (uint drive = 0; drive < DrivesPerConroller; drive++)
{
if (driveInfo[drive].Present)
{
if (Open(drive))
{
TextMode.Write(base.name);
TextMode.Write(": Disk #");
TextMode.Write((int)drive);
TextMode.Write(" - ", (int)(driveInfo[drive].MaxLBA / 1024 / 2));
TextMode.Write("MB, LBA=", (int)driveInfo[drive].MaxLBA);
TextMode.WriteLine("");
DeviceManager.Add(new DiskDevice(this, drive, false));
}
}
}
base.deviceStatus = DeviceStatus.Online;
}
/// <summary>
/// Gets the byte.
/// </summary>
/// <returns></returns>
protected byte GetByte()
{
WaitForReqisterReady();
return(dataPort.Read8());
}
/// <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 byte ReadConfig8(byte bus, byte slot, byte function, byte register)
{
configAddress.Write32(GetIndex(bus, slot, function, register));
return(configData.Read8());
}
/// <summary>
/// Determines whether this instance can transmit.
/// </summary>
/// <returns>
/// <c>true</c> if this instance can transmit; otherwise, <c>false</c>.
/// </returns>
protected bool CanTransmit()
{
return((lsrBase.Read8() & (byte)LSR.THRE) != 0);
}
/// <summary>
/// Gets the value.
/// </summary>
/// <param name="command">The command.</param>
/// <returns></returns>
protected byte GetValue(byte command)
{
activeControllerIndex.Write8(command);
return(activeControllerData.Read8());
}