SteelSeries PS/2 Keyboard Driver 2.0.0.1 for Windows 7/Windows 8.1 64-bit 1,469 downloads. Keyboard & Mouse Synaptics. Windows 8.1 64 bit, Windows 7 64 bit. May 13th 2016, 06:20 GMT. SteelSeries PS/2 Keyboard Driver 2.0.0.1 for Windows 7/Windows 8.1 1,041 downloads. In Microsoft Windows operating systems, PS/2-compatible scan codes provided by an input device are converted into virtual keys, which are propagated through the system in the form of Windows messages. If a device produces an incorrect scan code for a certain key, the wrong virtual key message will be sent.

1. Microsoft Ps/2 Keyboard Driver Windows 10
2. Microsoft Standard Ps 2 Keyboard Driver
3. Microsoft Ps2 Keyboard Driver Windows 10
4. Ps2 Keyboard Driver Download
5. Ps 2 Mouse Driver Windows 10

• Select the Finish button and your drivers for Microsoft PS-2 Mouse are installed. Search and consult the Readme file for additional installation drivers instructions for your Microsoft PS-2 Mouse. Depending on the environment that you are using, a Windows driver provided by Microsoft may be installed automatically on your computer.
• This topic describes the features of the following sample filter drivers in the Microsoft Windows Driver Kit (WDK): Kbfiltr, an optional upper-level filter driver for a Plug and Play PS/2-style keyboard device. Moufiltr, an optional upper-level filter driver for a Plug and Play PS/2-style mouse device.

Non-HID keyboards and mice can connect over multiple legacy buses but still use the same class driver. This section contains details on the class drivers themselves. The following sections goes into details on the controllers.

This topic describes the typical physical configuration of keyboard and mouse devices in Microsoft Windows 2000 and later.

The following figures show two common configurations that employ a single keyboard and a single mouse.

The figure on the left shows a keyboard and a mouse connected to a system bus through independent controllers. A typical configuration consists of a PS/2-style keyboard operated through an i8042 controller, and a serial-style mouse operated through a serial port controller.

The following additional information is important for keyboard and mice manufactures:

• Keyboards are opened in exclusive mode by the operating system stack for security reasons
• Windows supports the simultaneous connection of more than one keyboard and mouse device.
• Windows does not support independent access by a client to each device.

Class driver features

This topic describes the features of the following Microsoft Windows 2000 and later system class drivers:

• Kbdclass, the class driver for devices of GUID_CLASS_KEYBOARD device class

• Mouclass, the class driver for devices of GUID_CLASS_MOUSE device class

Kbdclass implements the Kbdclass service and its executable image is kbdclass.sys.

Mouclass implements the Mouclass service and its executable image is mouclass.sys.

Kbdclass and Mouclass each feature:

• Generic and hardware-independent operation of the device class.

• Plug and Play, power management, and Windows Management Instrumentation (WMI).

• Operation of legacy devices.

• Simultaneous operation of more than one device.

• Connection of a class service callback routine that a function driver uses to transfer data from the input data buffer of the device to the data buffer of the class driver.

Configuration of device objects

The following figure shows the configuration of device objects for a Plug and Play PS/2-style keyboard and mouse device. Each class driver creates an upper-level class filter device object (filter DO) that is attached to a function device object (FDO) through an optional upper-level device filter DO. An upper-level device filter driver creates the upper-level device filter DO. I8042prt creates the function DO and attaches it to a physical device object (PDO) created by the root bus driver.

PS/2 Keyboard

The keyboard driver stack consists of the following.

• Kbdclass, the upper-level keyboard class filter driver
• One or more optional upper-level keyboard filter driver
• I8042prt, the function driver

PS/2 Mouse

The mouse driver stack consists of the following.

• Mouclass, the upper-level mouse class filter driver
• One or more optional upper-level mouse filter driver
• I8042prt, the function driver

Kbdclass and Mouclass can support more than one device in two different modes. In the one-to-one mode, each device has an independent device stack. The class driver creates and attaches an independent class DO to each device stack. Each device stack has its own control state and input buffer. The Microsoft Win32 subsystem accesses input from each device through a unique file object.

In the grandmaster mode, the class driver operates all the devices in the following way:

• The class driver creates both a grandmaster class DO that represents all of the devices and a subordinate class DO for each device.

  The class driver attaches a subordinate class DO to each device stack. Below the subordinate class DO, the device stack is same as that created in the one-to-one mode.

• The grandmaster class DO controls the operation of all the subordinate DOs.

• The Win32 subsystem accesses all device input through the file object that represents the grandmaster class device.

• All device input is buffered in the grandmaster's data queue.

• The grandmaster maintains a single global device state.

Kbdclass and Mouclass operate in the one-to-one mode if their registry entry value ConnectMultiplePorts is set to 0x00 (under the key HKLMServicesCurrentControlSet<class service>Parameters, where class service is Kbdclass or Mouclass). Otherwise Kbdclass and Mouclass operate in grandmaster mode.

Open and close via the class driver

The Microsoft Win32 subsystem opens all keyboard and mouse devices for its exclusive use. For each device class, the Win32 subsystem treats input from all the devices as if the input came from a single input device. An application cannot request to receive input from only one particular device.

The Win32 subsystem dynamically opens Plug and Play input devices after it receives notification from the Plug and Play manager that a GUID_CLASS_KEYBOARD or GUID_CLASS_MOUSE device interface is enabled. The Win32 subsystem closes Plug and Play devices after it receives notification that an opened interface is disabled. The Win32 subsystem also opens legacy devices by name (for example, 'DeviceKeyboardLegacyClass0'). Note that once the Win32 subsystem successfully opens a legacy device, it cannot determine if the device is later physically removed.

After Kbdclass and Mouclass receive a create request they do the following for Plug and Play and legacy operation:

• Plug and Play Operation

  If the device is in the Plug and Play started state, the class driver sends the IRP_MJ_CREATE request down the driver stack. Otherwise the class driver completes the request without sending the request down the driver stack. The class driver sets the trusted file that has read access to the device. If there is a grandmaster device, the class driver sends a create request to all the ports that are associated with the subordinate class devices.

• Legacy Operation

  The class driver sends an internal device control request to the port driver to enable the device.

Connect a service callback to a device

The class drivers must connect their class service to a device before the device can be opened. The class drivers connect their class service after they attach a class DO to a device stack. The function driver uses the class service callback to transfer input data from a device to the class data queue for the device. The function driver's ISR dispatch completion routine for a device calls the class service callback. Kbdclass provides the class service callback KeyboardClassServiceCallback, and Mouclass provides the class service callback MouseClassServiceCallback.

A vendor can modify the operation of a class service callback by installing an upper-level filter driver for a device. The sample keyboard filter driver Kbfiltr defines the KbFilter_ServiceCallback callback, and the sample mouse filter driver Moufiltr defines the MouFilter_ServiceCallback callback. The sample filter service callbacks can be configured to modify the input data that is transferred from the port input buffer for a device to the class data queue. For example, the filter service callback can delete, transform, or insert data.

The class and filter service callbacks are connected in the following way:

• The class driver sends an internal device connect request down the device stack (IOCTL_INTERNAL_KEYBOARD_CONNECT or IOCTL_INTERNAL_MOUSE_CONNECT). The class connect data is specified by a CONNECT_DATA structure that includes a pointer to the class device object, and a pointer to the class service callback.

• After the filter driver receives the connect request, it saves a copy of the class connect data, and replaces the request's connect data with filter connect data. The filter connect data specifies a pointer to the filter device object and a pointer to the filter driver service callback. The filter driver then sends the filtered connect request to the function driver.

The class and filter service callbacks are called in the following way:

• The function driver uses the filter connect data to make the initial callback to the filter service callback.

• After filtering the input data, the filter service callback uses the class connect data that it saved to make a callback to the class service callback.

Query and set a keyboard device

I8042prt supports the following internal device control requests to query information about a keyboard device, and to set parameters on a keyboard device:

For more information about all keyboard device control requests, see Human Interface Devices Reference.

Scan code mapper for keyboards

In Microsoft Windows operating systems, PS/2-compatible scan codes provided by an input device are converted into virtual keys, which are propagated through the system in the form of Windows messages. If a device produces an incorrect scan code for a certain key, the wrong virtual key message will be sent. This can be fixed by writing a filter driver that analyzes the scan codes generated by firmware and modifies the incorrect scan code to one understood by the system. However, this is a tedious process and can sometimes lead to severe problems, if errors exist in the kernel-level filter driver.

Windows 2000 and Windows XP include a new Scan Code Mapper, which provides a method that allows for mapping of scan codes. The scan code mappings for Windows are stored in the following registry key:

Note There is also a Keyboard Layouts key (notice the plural form) under the Control key, but that key should not be modified.

In the Keyboard Layout key, the Scancode Map value must be added. This value is of type REG_BINARY (little Endian format) and has the data format specified in the following table.

The first and second DWORDS store header information and should be set to all zeroes for the current version of the Scan Code Mapper. The third DWORD entry holds a count of the total number of mappings that follow, including the null terminating mapping. The minimum count would therefore be 1 (no mappings specified). The individual mappings follow the header. Each mapping is one DWORD in length and is divided into two WORD length fields. Each WORD field stores the scan code for a key to be mapped.

Once the map is stored in the registry, the system must be rebooted for the mappings to take effect. Note that if the mapping of a scan code is necessary on a keypress, the step is performed in user mode just before the scan code is converted to a virtual key. Doing this conversion in user mode can present certain limitations, such as mapping not working correctly when running under Terminal Services.

To remove these mappings, remove the Scancode Map registry value and reboot.

Example 1

The following presents an example. To swap the left CTRL key with the CAPS LOCK key, use a registry editor (preferably Regedt32.exe) to modify the Scancode Map key with the following value:

The following table contains these entries broken into DWORD fields and the bytes swapped.

Value: Interpretation

0x00000000: Header: Version. Set to all zeroes.

0x00000000: Header: Flags. Set to all zeroes.

0x00000003: Three entries in the map (including null entry).

0x001D003A: Left CTRL key --> CAPS LOCK (0x1D --> 0x3A).

0x003A001D: CAPS LOCK --> Left CTRL key (0x3A --> 0x1D).

0x00000000: Null terminator.

Example 2

It is also possible to add a key not generally available on a keyboard or to remove a key that is never used. The following example shows the value stored in Scancode Map to remove the right CTRL key and change the functionality of the right ALT key to work as a mute key:

The following table contains these entries broken into DWORD fields and the bytes swapped. Synthesia download cnet.

Value: Interpretation

0x00000000: Header: Version. Set to all zeroes.

0x00000000: Header: Flags. Set to all zeroes.

0x00000003: Three entries in the map (including null entry).

0xE01D0000: Remove the right CTRL key (0xE01D --> 0x00).

0xE038E020: Right ALT key --> Mute key (0xE038 --> 0xE020).

0x00000000: Null terminator.

After the necessary data is generated, it can be inserted into the registry in several ways.

• A .reg file can be generated that can be easily incorporated into the system registry using a registry editor.
• An .inf file can also be created with an [AddReg] section that contains the registry information to be added.
• Regedt32.exe can be used to manually add the information to the registry.

The Scan Code Mapper has several advantages and disadvantages.

The advantages include:

• The Mapper can be used as an easy fix to correct firmware errors.
• Frequently used keys can be added to the keyboard by modifying the map in registry. Keys that aren't often used (for example, right CTRL key) can be mapped to null (removed) or exchanged for other keys.
• Key locations can be altered easily. Users can easily customize the location of frequently used keys for their benefit.

The following disadvantages are recognized:

• Once the map is stored in the registry, a system reboot is required to activate it.
• The mappings stored in the registry work at system level and apply to all users. These mappings cannot be set to work differently depending on the current user.
• The current implementation restricts the functionality of the map such that mappings always apply to all keyboards connected to the system. It is not currently possible to create a map on a per-keyboard basis.

Query a mouse device

I8042prt supports the following internal device control request to query information about a mouse device:

For more information about all mouse device control requests, see Human Interface Devices Reference.

Registry settings associated with mouse class driver

The following is a list of registry keys associated with the mouse class driver.

[Key: HKLMSYSTEMCurrentControlSetServicesMouclassParameters]

• MaximumPortsServiced – Not used on Windows XP and later. Only for Windows NT4.
• PointerDeviceBaseName – Specifies the base name for the device objects created by the mouse class device driver
• ConnectMultiplePorts – Determines whether there is one or more than one port device object for each class device object. This entry is used primarily by device drivers.
• MouseDataQueueSize - Specifies the number of mouse events buffered by the mouse driver. It also is used in calculating the size of the mouse driver's internal buffer in the nonpaged memory pool.

Absolute pointing devices

For devices of type GUID_CLASS_MOUSE, a device's function driver:

• Handles device-specific input.

• Creates the MOUSE_INPUT_DATA structures required by MouseClassServiceCallback.

• Transfers MOUSE_INPUT_DATA structures to the Mouclass data queue by calling MouseClassServiceCallback in its ISR dispatch completion routine.

For an absolute pointing device, the device's function driver must set the LastX, LastY, and Flags members of the MOUSE_INPUT_DATA structures in the following way:

• In addition to dividing the device input value by the maximum capability of the device, the driver scales the device input value by 0xFFFF:

• The driver sets the MOUSE_MOVE_ABSOLUTE flag in Flags.

• If the input should be mapped by Window Manager to an entire virtual desktop, the driver sets the MOUSE_VIRTUAL_DESKTOP flag in Flags. If the MOUSE_VIRTUAL_DESKTOP flag is not set, Window Manager maps the input to only the primary monitor.

The following specifies, by type of device, how these special requirements for an absolute pointing device are implemented:

• HID devices:

  Mouhid, the Windows function driver for HID mouse devices, implements these special requirements automatically.

• PS/2-style devices:

  An upper-level filter driver is required. The filter driver supplies an IsrHook callback and a class service callback. I8042prt calls the IsrHook to handle raw device input, and calls the filter class service callback to filter the input. The filter class service callback, in turn, calls MouseClassServiceCallback. The combination of the IsrHook callback and the class service callback handles device-specific input, creates the required MOUSE_INPUT_DATA structures, scales the device input data, and sets the MOUSE_MOVE_ABSOLUTE flag.

• Plug and Play COM port devices that are enumerated by Serenum:

  A Plug and Play function driver is required. The function driver creates the required MOUSE_INPUT_DATA structures, scales the device input data, and sets the MOUSE_MOVE_ABSOLUTE flag before it calls MouseClassServiceCallback.

• Non-Plug and Play COM port devices:

  A device-specific function driver is required. The function driver creates the required MOUSE_INPUT_DATA structures, scales the device input data, and sets the MOUSE_MOVE_ABSOLUTE flag before it calls MouseClassServiceCallback.

• Device on an unsupported bus:

  A device-specific function driver is required. The function driver creates the required MOUSE_INPUT_DATA structures, scales the device input data, and sets the MOUSE_MOVE_ABSOLUTE flag before it calls MouseClassServiceCallback.

This topic describes the features of the following sample filter drivers in the Microsoft Windows Driver Kit (WDK):

• Kbfiltr, an optional upper-level filter driver for a Plug and Play PS/2-style keyboard device

• Moufiltr, an optional upper-level filter driver for a Plug and Play PS/2-style mouse device

Microsoft Ps/2 Keyboard Driver Windows 10

Kbfiltr and Moufiltr demonstrate how to filter I/O requests and add callback routines that modify the operation of the class service and the operation of I8042prt.

Note The design of the Terminal Server for Windows 2000 and later does not support using the sample keyboard and mouse filter drivers to filter input from devices physically installed on a remote client. A filter driver installed on a Terminal Server can only be used to filter the input from the devices physically installed on a Terminal Server. This is a consequence of the way the TermDD.sys driver for the Terminal Server handles input from remote clients.

Kbfiltr and Moufiltr support Plug and Play and power management.

Kbfiltr provides the following callback routines:

Microsoft Standard Ps 2 Keyboard Driver

KbFilter_ServiceCallback
The keyboard filter service callback is added to the keyboard class service callback. Trend micro maximum security torrent. The filter service callback can be configured to modify the keyboard input data that is saved in the class driver's data queue.

KbFilter_IsrHook
The keyboard filter ISR hook routine is a template for the IsrRoutine callback that I8042prt supports for a keyboard device. The callback can be configured to customize the operation of an ISR of a keyboard.

KbFilter_InitializationRoutine
The keyboard filter initialization routine is a template for the InitializationRoutine callback that I8042prt supports for a keyboard device. This callback can be configured to customize the initialization of a keyboard device.

Moufiltr provides the following callback routines:

MouFilter_ServiceCallback
The mouse filter service callback is added to the mouse class service callback. The filter service callback can be configured to modify the mouse input data that is saved in the class driver's data queue.

MouFilter_IsrHook
The mouse filter ISR hook routine is a template for the IsrRoutine callback that I8042prt supports for a mouse device. The callback can be configured to customize the operation of that mouse's ISR.

Customize the initialization and ISR of a device

Vendors can supply optional upper-level device filter drivers that can add the following optional callbacks to the operation of I8042prt:

PI8042_KEYBOARD_ISR
The keyboard interrupt service routine (ISR) customizes the operation of the I8042prt keyboard ISR. A keyboard ISR callback is not needed if the default operation of I8042prt is sufficient. After the I8042prt keyboard ISR validates a keyboard interrupt, it calls the keyboard ISR callback.

PI8042_MOUSE_ISR
The mouse ISR customizes the operation of the I8042prt mouse ISR. A mouse ISR callback is not needed if the default operation of I8042prt is sufficient. After the I8042prt mouse ISR validates a mouse interrupt, it calls the mouse ISR callback.

PI8042_KEYBOARD_INITIALIZATION_ROUTINE
The keyboard initialization callback supplements the default initialization of a keyboard device by I8042prt. I8042prt calls this routine when it initializes a keyboard device.

I8042prt adds the callbacks provided by an upper-level device filter driver by using an IOCTL_INTERNAL_I8042_HOOK_KEYBOARD request for a keyboard device and an IOCTL_INTERNAL_I8042_HOOK_MOUSE request for a mouse device. After I8042prt receives a connect request from a device class driver, I8042prt synchronously sends the device-specific hook request to the top of the device stack.

After a filter driver receives a hook request, it does the following:

• Saves the upper-level driver hook information, if any, that is passed to the filter driver.

  The hook information includes a pointer to a context, a pointer to an ISR callback, and a pointer to an initialization callback (initialization callback for a keyboard only).

• Replaces the upper-level driver hook information with the filter driver's hook information.

• Saves the context of I8042prt and the pointers to callbacks that the filter driver callbacks can use.

The sample filter drivers, Kbfiltr and Moufiltr, provide the following callback routines:

• KbFilter_IsrHook is a template for the PI8042_KEYBOARD_ISR callback.

• KbFilter_InitializationRoutine is a template for the PI8042_KEYBOARD_INITIALIZATION_ROUTINE callback.

• MouFilter_IsrHook is a template for the PI8042_MOUSE_ISR callback.

Microsoft Ps2 Keyboard Driver Windows 10

Synchronize the operation of a filter driver with a device's ISR

I8042prt uses a start information request to pass a pointer to a device's interrupt object to the upper-level drivers in its device stack. After a device is started, the filter driver can use the interrupt object to synchronize its operation with the interrupt service routine. Filter drivers should only use the interrupt object in calls to KeSynchronizeExecution.

I8042prt passes the interrupt object pointer to the top of the device stack by using an IOCTL_INTERNAL_I8042_KEYBOARD_START_INFORMATION request for a keyboard device and an IOCTL_INTERNAL_I8042_MOUSE_START_INFORMATION request for a mouse device. I8042prt synchronously sends a start information request to the top of the device stack after the hardware initialization of a device. After a filter driver receives a start information request, it saves the start information and passes the request down the device stack. I8042prt completes the request.

Synchronize writes by a filter driver to a device

To customize the operation of a device, a filter driver needs to write control data to the device. The filter driver must synchronize writes to a device with the device's interrupt service routine and other asynchronous reads or writes on the device (for example, writes that are initiated by a set typematic request or a set keyboard indicator request).

I8042prt supports an IOCTL_INTERNAL_I8042_KEYBOARD_WRITE_BUFFER request and an IOCTL_INTERNAL_I8042_MOUSE_WRITE_BUFFER request for this purpose. A write buffer request is synchronized with the device's ISR and other requests that read or write the device.

I8042prt callbacks that filter drivers can use

I8042prt supports the following callbacks that an upper-level device filter driver can use in its ISR callback:

Ps2 Keyboard Driver Download

PI8042_ISR_WRITE_PORT
A write port callback for a device writes to the i8042 port at the IRQL of the device's ISR.

Ps 2 Mouse Driver Windows 10

PI8042_QUEUE_PACKET
A queue packet callback for a device queues an input data packet for processing by the device's ISR DPC.

PI8042_SYNCH_READ_PORT
This callback can be used in a PI8042_KEYBOARD_INITIALIZATION_ROUTINE callback. I8042prt specifies the read port callback in the ReadPort parameter that I8042prt inputs to a keyboard initialization routine.

PI8042_SYNCH_WRITE_PORT
This callback can be used in a PI8042_KEYBOARD_INITIALIZATION_ROUTINE callback. I8042prt specifies the write port callback in the WritePort parameter that I8042prt inputs to a keyboard initialization routine.

I8042prt passes pointers to the keyboard device callbacks in a INTERNAL_I8042_HOOK_KEYBOARD structure that I8042prt uses to input information with an IOCTL_INTERNAL_I8042_HOOK_KEYBOARD request.

I8042prt passes pointers to the mouse device callbacks in a INTERNAL_I8042_HOOK_MOUSE structure that I8042prt uses to input information with an IOCTL_INTERNAL_I8042_HOOK_KEYBOARD request.

After a filter driver receives a hook device request, it saves the I8042prt callback pointers for use in the filter driver's ISR callback.