Version history

Version 1.5.7 (August, 2025)

Pair device: added "Number of lanes" parameter which significantly simplifies configuring multiple 3rd party apps with Serial Router
Serial Router: added support for FT-710, FT-991, FT-950, TS-690 and TS-870 CAT compatible protocols
Serial Router: automatically connecting to all lanes when one of target ports is Pair device with multiple lanes
Serial Router: start time significantly improved
Added drag and drop support to VSPE application for loading config file
TcpServer, TcpClient: added "Read and discard stale data from COM port" option (enabled by default) to avoid buffering stale data if TCP connection not established
Displaying error message for selected device in status bar (such as TcpClient failed connection status)
Added device error message in the device list Status column
TcpClient: logging connection error messages to log file
Device Create Wizard: on failure, the device is created in Stopped state
Device Create Wizard: specifying optional device Title and Description on first page
Device Properties: added Description tab
Lots of user interface improvements such as resizable windows, default selections, tab navigation etc
Message view: limiting number of displayed messages, optimized adding new messages
Max log file size is now limited to 8 MB
Terminal: modem registers changes are displayed much faster when Quick Update mode is enabled
Terminal: added "immediate send mode" checkbox
TcpServer, UdpManager: added button to check current Windows Firewall settings (checking allow/block rules for specified TCP/UDP ports for VSPE service)
TcpServer, UdpManager: added suggested PowerShell command to add inbound allow rule to Windows Firewall for specified TCP/UDP ports
Test COM port tool: skipping configuring COM port with default settings on port open
Improved compatibility with certain applications
Stopping TcpClient and Bridge TcpClient is much faster during connection attempt
Stopping TcpServer with connected clients is much faster
TcpServer: optimized handling client connections
Fixed bug: "Sent data" column was reporting wrong value (x2) in Connector,Pair and Splitter devices
Fixed bug: Terminal not displaying new data after clearing window if the previous data is the same
Fixed bug: INF processing error during VSPE install after using certain disk cloning software
Fixed bug: Occasionally, the application could not be properly closed
Fixed bug: Fixed rare race condition in Splitter when ReadTotalTimeout was not properly processed
Fixed bug: Fixed handling PURGE_RXABORT request

Version 1.5.6 (June, 2025)

Serial Router: added support for TS-570 CAT compatible protocol
Added Compress/Decompress data transformers which can be used to reduce network traffic
Added Encrypt/Decrypt data transformers (symmetric AES256 encryption)
Added "Write to file" transformer
Added "Minimize to system tray" option in preferences
Transformers collection: added PostDelay property for controlling data buffer (useful for Compress transformer)
Transformers collection: fixed bug with default Help button
Transformers collection: fixed UI bug when moving transformers up and down
Fixed issue when loading config file with non-existing transformer (forward compatibility)
Connector, Splitter, Pair: added "Purge buffers" on open and close settings
COM port settings for user-mode devices: added "Purge buffers on open" setting
Fixed bug: new license key is not properly stored when license file from old version already exists
Fixed bug: TcpServer transformers to COM port were not unique for every connection
Fixed bug: Connector/Splitter did not work properly with apps like AutoHotKey which write data and immediately close COM port
Fixed bug: Bridge COM port could not be properly parsed when in lowercase (i.e. com1)
Not displaying error message when loading configuration and device switches to Waiting state
When starting another VSPE instance, show VSPE window which is already running
VSPE cmd line: when starting another VSPE instance, transfer cmd line to VSPE which is already running
Device context menu: Restart device command

Version 1.5.5 (May, 2025)

Serial Router: added TS-450, TS-850, TS-950 compatible CAT protocol support
Localization: added translations to more languages
User interface: Added more tooltips
Splitter: "Allow buffer overruns" renamed to "Not allowed to block read flow" which explains it better
Help window: Removed "always on top" style
Added VSPE application setting: Delete all devices on close (disabled by default)
Added Help -> Show license key menu command
Added checkboxes with options to application close confirmation dialog

Version 1.5.4 (April, 2025)

Splitter: fixed read data delay on first client connection when "stop reading data" checkbox is set
Virtual Pair and Virtual Splitter: added support for overriding serial timeouts. Useful for non-trivial scenarios with some applications.
UdpManager: added broadcast/multicast mode
TcpServer/TcpClient: added support for TLS or mTLS auth (optional)
TcpServer, TcpClient, Bridge: managing TCP Keep-Alive packets interval in settings
TcpServer/TcpClient: fixed (rare) race condition when forwarding modem registers fails
TcpClient: immediate reconnect delay changed to 1 second
TcpClient: Fixed bug when settings cannot be changed when device is in Connecting state
Fixed bug: invalid StopBits value when loading legacy config file created by VSPE with version older than 1.2
Serial port settings: added additional write-specific settings
Serial Router: removed "Buffered read mode" checkbox because it was moved to Serial port settings
Serial Router Switch (ICOM compatible protocol): Added support for broadcast responses with id=1
Serial Router: added FTDX-1200,FTDX-3000, FTDX-9000 compatible CAT protocols support
Serial settings dialog: allowing entering custom COM port speed
Binary transformer (include/exclude): added support for multiple filters with attributes (offset_abs)
Binary transformer (include/exclude): added support for placeholder values
Fixed delay when writing to COM port for the first time in another thread for some devices like TcpClient
Monitoring tool: added data include/exclude filters
Monitoring tool: added "color highlight" mode
Monitoring tool: added toolbar and menu
All dialogs show context help on F1 key press
Added tooltips to device configuration pages

Version 1.5.3 (March, 2025)

Based on feedback, Autostart config option was removed from preferences and replaced with "File->Save as autostart config (on VSPE service startup)" menu command
Supporting configuration file names with unicode characters
Supporting installing to folder with unicode characters
Added optional settings for restoring window position, size, columns, panels
Added "View" menu to show/hide right and bottom panels
New transformer: Wait for complete data
Fixed transient "Error" state for newly created kernel devices
Serial Router: added global write and read transformers
Serial Router: fixed "allowed to read" option for target port
Serial Router (ICOM compatible protocol handler): handling broadcast packets from radio station
Serial Router: added support for FT-891 CAT compatible protocol
Transformers: fixed race condition in "multiple writers" scenario
Bridge (TcpClient): fixed race condition on shutdown during active traffic
Connector/Pair: fixed rare race condition when waiting for multiple comm events
Connector/Pair: added "Reset modem registers on close" option (off by default)
Connector/Pair: added "Always queue write requests" option (off by default)
Serial Router: fixed initialization sequence priority when placed before Splitter it depends on
Serial Router: UI improvements in settings
Serial Router: added FT1000 CAT compatible protocol (in SmartRouter mode)
Serial Router: added additional validation for requests/responses in supported protocols
Splitter, Serial Router: added experimental "Buffered reading mode" to reduce number of read/writes
Monitoring tool: added GetCommProperties, GetCommTimeouts, SetCommTimeouts events
Terminal: Added "Query debug info" command for COM port
Terminal: Added "Send byte by byte" checkbox
Terminal: fully async Send requests
Added simple "Test Com Port" tool for investigations
Virtual ports: fixed CurrentTxQueue, CurrentRxQueue reporting
Terminal: fixed resizing bug with Copy button
VSPE API COM Server: fixed dispatch interface, added Python and PowerShell examples
VSPE API: Switched to Free threading model
VSPE API: Added vspe_runMaintenanceRoutine method
VSPE API: Fixed vspe_getDeviceIndexByComPortIndex
TcpServer: fixed bug with memory leak on stopping device
TcpServer: fixed bug when not closing source COM after failing to start due to the network issue
TcpServer: added "Delayed initialization on network error" option
Serial Redirector: added "Waiting" state like other devices when misisng dependency
Immediately displaying Waiting state for devices which failed to start by request and switched to Waiting mode
Splitter: fixed readable/writable config options
Splitter: improved performance of write requests
Splitter: added support for hardware flow control (RTS/CTS) which can be defined in port settings
Virtual Devices: Received is now actual Received in Read request value (not total bytes copied to Input buffer like before)
Kernel device information panel: more information in RX/TX columns
Main window: Fixed received/sent statistics for all devices
Fixed sending delay for COM ports used in all user mode devices
Driver: Fixed long delay when sending data one by one with BaudRate emulation enabled and Read request is waiting for data at the same time
Connector/Pair/Splitter: better read/write timeouts handling
Connector/Pair/Splitter: releasing WaitCommEvent requests when SetCommMask is set to 0
All devices: COM port names now can be typed as a string COM1 or as number 1
Added "minimize" command line argument
All user-mode devices: limiting max COM port write chunk size to 128KB to avoid failures when sending too much data
All user-mode devices: more reliable write requests when sending lots of data

Version 1.5.2 (February, 2025)

Transformers: added Binary splitter and Binary filter transformers
Splitter: fixed read issue with some USB-to-serial adapters
Splitter: fixed rare condition with lost RXCHAR event
Splitter: added "Read using polling mode" config option
Splitter: readable/writable options for every virtual port
Splitter: overrun timeout value can now be specified in settings
Splitter: fixed delay on fast write after connect for the first client
Connector/Pair: (configurable) emitting EV_EVENT1 and EV_EVENT2 on peer connect/disconnect
Connector/Pair: fixed "ignore writes if partner not connected" option
Connector/Pair: write request is now async, and TXEMPTY event is emitted after request completed
Connector/Pair: (configurable) allow buffer overruns
Generating EV_RXFLAG event for Connector/Pair/Splitter devices
User-mode devices: fixed COM port initialization sequence which could cause not reading events when input buffer was full before initialization
TcpServer/TcpClient: added option to clear COM port input buffer on connect
TcpServer/TcpClient/UdpManager: fixed race condition issue on stop
Monitoring tool: added milliseconds to time stamps
Terminal: fixed freezing when having too many RX events without fast mode enabled
Terminal: fixed potential deadlock when preparing output data
Terminal: added "Copy" button to copy data to clipboard
VSPE license key dialog: supporting multiline (in case the license key formatting is broken)
VSPE installer: fixed ansi to unicode string conversion for VSPE shortcut which resulted in incorrect .vspe file description in Explorer
VSPE installer: supporting additional install/uninstall mode without VSPE kernel driver (useful in some scenarios)
Redirector, Serial Router: added "Detect stale incoming data" option when reading from COM ports which are constantly sending data (like GPS) and need to be re-initialized if the data flow stops
Fixed: race condition when stopping some VSPE devices
New VSPE device: Serial Router device with "FanOut" and "Smart router" modes
Serial Router (Smart router mode) - added support for certain CAT/rotator compatible protocols
Serial Router: added "Close if no connections" option to avoid keeping source port opened all the time
Fixed OmniRig startup timeout issue when connected to Pair/Connector
API: added startDevice, stopDevice methods

Version 1.5.1 (December, 2024)

Splitter: fixed bug with not emitting TXEMPTY event (now correctly works OmniRig)
Localization: added translations to more languages
VSPE devices: introducing delayed initialization for devices waiting for dependencies
Added custom descriptions for VSPE configuration and for VSPE devices
"Stopped" and "Started" device states are persisted in VSPE config file
Added Monitoring tool: monitoring traffic for VSPE user-mode devices
Supporting additional command line parameters (start, stop, close)
Serial settings: removing DTR/RTS line enabled settings - instead switching to classic Handshake types
Serial settings: initial DTR/RTS modem registers state now have 'Not defined' state
Splitter: separate settings for controlling RTS/DTR forwarding
Splitter: added setting "Only first connected client can write data and update modem registers"
Splitter: modified writing to source COM port flow to reduce the likelihood of conflicts
Connector/Pair: fixed bug with losing events on re-connect
Connector/Pair: added setting to ignore write events if partner not connected
Connector/Pair: added support for custom RTS/DTR pinouts
Splitter: added setting to stopping reading from source COM port when no clients connected
Splitter: added setting to reset RTS/DTR when no clients connected
Splitter: added setting to clear input buffer when no clients connected
Splitter: fixed bug with sending multiple write requests sequentially to source COM port
Terminal: fixed bug with freezing
TcpServer/Client/Redirector: fixed bugs with initial forwarding or modem registers
Fixed UI bug in serial settings selection for Stop Bits property
Lots of UI changes for colors consistency, keyboard navigation, focus etc.

Version 1.5 (November, 2024)

Virtual ports are now visible in Device Manager and to all applications
VSPE service (running with minimum privileges on local computer) is now automatically loading last known configuration on startup (if enabled in settings)
Native ARM64 platform support
Introducing transformers for user-mode devices to filter/modify/control consistency of the data flows
Virtual Splitter device: legacy mode with single shared virtual port or new mode with multiple virtual ports for better data flow control
Fixed unicode characters localization and added new languages
All kernel devices: fixes for Read/Write timeouts, supporting additional serial port events
Virtual Splitter: internal data flow is fully re-written to make Splitter more reliable
Virtual Connector/Pair: fixed baud rate emulation, resetting DTR/RTS registers on disconnect
Virtual Splitter/Connector adding option to limit connections from the same application to the same virtual port
Redirector, UdpManager, TcpServer, TcpClient, Bridge (Serial Port): switched to async read mode for better performance
Transformers: Added LineSplitter and TextFilter transformers, adding multiple transformers for all supported user-mode devices
Bridge: added NamedPipe client/server
Serial Redirector: fixed issue with incorrect settings for device 2
Serial Redirector: added read-only options for COM ports
UdpManager: added read-only and write-only settings for COM port
User interface: Added Start/Stop/Clone commands for devices
User interface: "Open with terminal" menu now works for all virtual ports and TcpServer
User interface: Terminal: fixed new lines, scrolling
User interface: COM port selection drop list is now correctly pre-filled with existing COM port names
Installer: validating for x32 platform installer when installing on x64 operating system because it caused driver installation issues
Removed non-relevant settings (delete devices on quit, set as service helper etc) and command line parameters
Deprecated: HttpServer is deprecated and removed
Removed kernel devices data flow monitoring (it will be replaced with better monitoring solution in future version)
VSPE documentation is fully re-written
TcpServer: fixed bug with not setting keep alive settings for connected sockets
TcpServer: added option to Close/Open COM port based on TCP connection state (number of connected clients)
TcpServer: added maximum number of connections configuration setting
TcpClient: fixed reconnection timeout setting
TcpClient, Bridge: moved connection logic to separate thread to avoid lag when creating device
TcpServer, TcpClient now can have only modem registers control connections (no data connections)
Bridge file data source: input file is opened with share write permissions, allowing input file to be updated
Bridge file data source: added option to read file from end
Allow editing any device in Running state (unless it is a kernel device with active connections)

Version 1.4 (June, 2024)

This is the last version with current driver install model, next version will have significant changes.
(Experimental) VSPE COM ports visible in Device Manager (experimental feature, enabled in settings, fixes some apps, work is still in progress)
Introduced initial DTR/RTS states in serial port settings
Fixed initial DTR/RTS states for TcpServer and TcpClient depending on connection status
Removed deprecated python 2.7 python bindings
Added buffer size in Bridge configuration (Tcp flow)
Bridge device: not displaying error if initialization failed, allowing it to re-connect
Fixed ReadIntervalTimeout kernel driver bug
UdpManager: fixed receiver with packet size > 1024
Keyboard navigation UI fixes
Few UI tweaks and improvements

Version 1.3 (July, 2023)

Improved Connector/Pair kernel driver performance
Startup properties tab in Preferences
Fixed "Stop bits" bug in serial port settings
Improved logging
TcpClient/TcpServer: control data port to propagate modem registers
UI fix for inconsistent serial port selector
Fixed modem redirection logic for Serial Redirector
Fixed kernel driver race condition for Connector/Pair devices

Version 1.2 (January, 2023)

Windows 11 on ARM64 kernel driver is part of x64 build now
Fixed lots of kernel driver stability issues for x64 versions (Win10 and Win11)
VSPE Windows Service is now working for all devices (not compatible with previous version, service needs to be re-created)
VSPE Service mode: silent mode
Bridge: read-only mode for data stream
Bridge: added Text Transformer (replacing regex/wait for new line with separator)
Bridge: added Binary Transformer (replacing data/wait for new data chunk)
More control over serial port settings
Numerous bug fixes
Added simple Terminal tool
Spy: better descriptions, n/a stream is now supported
Added more technical details to Help->About
More detailed error descriptions
UI fixes and tweaks

Version 1.1 (October, 2021)

Fixed kernel driver memory integrity compatibility for Windows 10 64
Updated kernel driver signing with 3 signatures
Windows 10 32 bit driver extra signature
Documentation fixes
VSPE API: now does not print anything to console output

Version 1.0 (June, 2020)

VSPE installer: upgraded to latest WiX module
VSPE installer: to reduce number of support cases, now asking for Windows reboot after installation has been completed
VSPE API: vspe_release now releases control device handle
VSPE API: initialization refactoring
64 bit installer now installs VSPE to correct Program Files location
Better description in kernel driver troubleshooting dialog
Correctly detecting missing kernel driver service in troubleshooting information

Version 0.946 (May, 2020)

Fixed bug in Autostart helper command when file contains spaces
Fixed bug in Windows service mode when service manager complained that service did not start
Multi signature kernel driver signing
Refactored kernel driver installation
More debug info in about dialog
Minimizing to system tray is now optional (disabled by default)

Version 0.945 (May, 2020)

Fixed issues with starting as service
Updated 'autostart shortcut' documentation for modern Windows systems

Version 0.944 (May, 2020)

Fixed issue with monitoring devices from 64 bit VSPE app
Getting ready for dropping exclusive access requirement to kernel driver
Switching to global mutex to detect VSPE tool instances from other sessions
Better checkpoint logging on startup to investigate client issues
AppData folder is now changed in LocalAppData, license and settings are migrated
Missing LocalAppData variable is now handled correctly

Version 0.943 (May, 2020)

Fixed issue with settings file permission denied when started as regular user
Fixed issues with API/VSPE tool licenses collisions
Identified issue and disabled Monitoring feature for x64 version
Register directly from About dialog
Support information in About dialog
More descriptive error messages for registration and kernel driver issues
VSPE.log is now created in correct AppData folder
API: Added vspe_get_activation_error() method and better activation error message
UI tweaks

Version 0.942 (April, 2020)

Fixed issues with product registration
Showing user more information when driver cannot be started

Version 0.941 (June, 2019)

Fixed kernel driver loading issue with Windows 10 Desktop

Version 0.940 (June, 2019)

Fixed Windows 10 May update compatibility issue
Added 64 bit package

Version 0.939 (February, 2011)

Fixed UDPManager device

Version 0.938 (June 26, 2010)

Added Spy device
TcpServer and TcpClient devices now supports COM port read-only and COM port write-only modes
Fixed bug with localization of the device properties dialog
Added ability to reorganize devices (move up and down) when emulation is stopped
Fixed bug with COM port speed selection from Combo box (added missed values)
Reinitialization of failed devices (see Preferences => Advanced tab) - disabled by default
Fixed French translation
File data stream: added output ability, now it can be used to write output to file
Updated documentation

Version 0.937 (March 29, 2010)

Fixed bug with all devices: input buffer is cleared when virtual COM port is being opened
Fixed bug: possible crash when using just created port at the same moment when it is being initialized
Fixed bug: TcpClient and TcpServer connections leaks
Fixed French translation (thanks to Emmanuel Gambarini)
Fixed Italian translation (made from scratch - Thanks to Fabio Bima)
Added Czech translation (thanks to Martin Hradil)

Version 0.936 (October 2, 2009)

VSPE_API: updated header file (__cdecl specification)
Fixed fail on exit

Version 0.935 (October 1, 2009)

Corrected German language translation (thanks to Philipp M. Kappler)
Corrected French language translation (thanks to Mathieu Peyrega)
Added Dutch language translation (thanks to Mathieu Fichefet)
Fixed bug in TcpClient: could not start without script file
Fixed fault on VSPE_API unitialization (The instruction referenced memory at "0x00000020")
Splitter device: experiments

Version 0.934 (September 17, 2009)

Added translations to Spanish, French, German and Italian languages
Added lua scripting support in TcpClient device
Added saving possibility (in the binary format) from the Connector/Splitter/Pair devices
Emulation improvement: SERIAL_EV_RLSD event generation
Emulation improvement: simplified emulation of IOCTL_SERIAL_LSRMST_INSERT control code
API bug fixed: VSPE kernel driver reinstallation when it is opened by another API instance
TcpServer: added interface IP parameter to listen for incoming connections

Version 0.933 (April 23, 2009)

Kernel devices: IRP_MJ_FLUSH_BUFFERS processing
VSPE settings are stored now in vspe.ini instead of registry: service compatibility
TcpClient: python scripting is disabled to remove dependency on Python25.dll.
VSPE_API users: there is no need to bundle Python25.dll anymore with your programs.
HttpServer: fixed exception when TCP port is used.
Splitter: bogus "critical error" fix when used with Connector. This is not an error.
VSPE GUI bug: language changing when information panel is visible.
VSPE_API: automatic driver initialization in vspe_initialize(). Error returned on fail.
VSPE_API: OutputDebugString is now called to display errors/important messages.
VSPE_API: vspe_getDeviceInfo - used now returns actual clients count

Version 0.931 (April 6, 2009)

Bug fixed: BSOD on destroyDevices (Pair, Connector)
Bug fixed: BSOD when splitter is created/destroyed very quickly

Version 0.929 (April 5, 2009)

Bug fixed: ReadIntervalTimeout is now enabled only after some data is received once
Added Chinese language
TcpClient: "zombie" connections bug fixed
Windows 2000 compatibility fixed (HttpServer issue)

Version 0.928 (April 4, 2009)

Splitter: bogus "critical error" quick fix

Version 0.927 (April 3, 2009)

New device added: Mapper
Feature added: kernel devices data monitoring
Feature added: password protected VSPE http server
HTTP interface: creating, deleting, reinitializing devices, loading configuration
Splitter: fixed bug (input buffer synchronization)
Splitter: invalid file handle detection (Properties dialog: Debug => Fix broken devices)
GUI: small fixes and modifications
Fixed bug: (kernel devices) making write request (0 bytes)
Fixed bug: properties dialog boolean values problem

Version 0.924 (March 29, 2009)

CRITICAL bug fixed: occasional BSOD with all kernel devices (synchronization issue with some port settings)
Added russian language
TcpClient: TCP conenction ignored on initialization
Splitter device: changed default sleep timeout

Version 0.923 (March 24, 2009)

Updated VSPE API, C++ sample, documentation
Updated VSPE_API PythonBindings
Added: VSPE_ComServer.dll - COM interface
WixInteractor: removed console
VSPE_API: Activation requirement added
VSPE_API: No additional files required in application folder when using COM interface.
VSPE_API: commercially licensed applications can work simultaneously
Distribution package contains FREE 32 bit VSPE API key
Fixed bug: splitter freezing
64 bit: VSPE can be started for testing purposes without activation key
TcpClient, TcpServer, Redirector, UdpManager: checking for errors when reading from the source port

Version 0.911 (February, 2009)

Fixed uninstaller bug in Vista

Version 0.910 (January 28, 2009)

Feature added: Windows Vista 64 bit support (64 bit license required)

Version 0.875 (December 31, 2008)

Feature added: Bridge device

Version 0.871 (November 25, 2008)

Feature added: VSPE API
Feature added: VSPE API C/C++ sample
Feature added: VSPE API Python bindings and sample
Fixed bug: ReadIntervalTimeout=MAXDWORD, ReadTotalTimeoutMultiplier=MAXDWORD, ReadTotalTimeoutConstant=(0;MAXDWORD)
Fixed bug: advanced tab in VSPE settings dialog did not work at all
Code refactoring

Version 0.866 (September 30, 2008)

Pair device can be used with modem drivers (unlike Connector)
Fixed Python scripting bug on program exit
Fixed bug: driver start failure on XP64 when previous version is installed
Fixed bug: ReadTotalTimeoutMultiplier is now ignored if -1
(In progress) Data flow control

Version 0.865 (September 17, 2008)

Fixed major bug (Connector and Pair): read buffer synchronization issues
Fixed critical bug: ReadTotalTimeoutConstant timer fails
Improved Splitter device processing
Added compatibility with NSSM (service manager)
UdpManager: added error message if listening to port failed
Added Simple UdpManager (hidden by default)

Version 0.86 (September 16, 2008)

Fixed bug: Redirector and TcpClient crash on exit
Improved Updater parser

Version 0.85 (September 13, 2008)

Added custom ReadIntervalTimeout in the serial port settings dialog
Added UdpManager device
VSPE can be started without kernel driver (only user-mode devices can be created)
Devices configuration can be modified after creation
Logging into file
Start/stop emulation buttons
TCP keep-alive control (optional, disabled by default)
Added simple Python script system for TcpClient device
Fixed bug on 64 bit OS: WOW64 file system redirection
Fixed bug on XP 64: Waiting dialog hanging

Version 0.81 (September 1, 2008)

Kernel driver bug fixed: ReadFile with TotalTimeout != 0
Kerner driver bug fixed: ReadTotalTimeoutConstant
Device reinitialization command
Socket manager: polling timeout changed from 500 ms to 100 ms
TcpClient: read data timeouts

Version 0.80 (July 29, 2008)

Feature added: initial modem registers state in the Splitter device settings
Modem registers mapping in the Serial Redirector device
TcpClient/TcpServer: Changing RTS/DTR state depending on connection status is optional
Some small kernel driver bugs fixed

Version 0.78 (July 25, 2008)

Feature added: user mode device - Serial Redirector
DTR for TcpServer and TcpClient depends on connection status
Information page for TcpServer
EV_CTS, EV_DSR events
Bug fixed: TcpServer, TcpClient disconnect detection
Bug fixed: hanging up when ReadIntervalTimeout is zero
Small GUI improvements

Version 0.77 (July 21, 2008)

Standard pinout for Pair and Connector devices
RTS for TcpServer and TcpClient depends on connection status
Modem registers information for kernel devices (Connector and Pair)
Preferences dialog (General tab)

Version 0.76 (July 15, 2008)

Bug fixed: Pair device: exclusive access only
Bug fixed: Read errors in some applications
Feature added: Baud rate emulation for Connector and Pair devices (Optional)
Additional driver checks at program startup
Kernel driver location and type changed (SERVICE_SYSTEM_START)

Version 0.75 (July 10, 2008)

Bug fixed: some apps hanged on close

Version 0.74 (June 24, 2008)

Feature added: TcpServer device receives data from network clients
Fixed some bugs

Version 0.73 (June 21, 2008)

Feature added: information panel
Performed some code optimization

Version 0.72 (June 10, 2008)

Feature added: working without administrator privileges
Emulation issue: ReadIntervalTimeout

Version 0.71 (May 30, 2008)

Fixed 2 nasty emulation bugs

Version 0.7 (May 29, 2008)

Windows Vista compatibility
Command line support
Documentation update

Version 0.6 (May 26, 2008)

Feature added: TcpClient device

Version 0.5 (May 22, 2008)

Registered vspe shell extension
Improved user interface

Version 0.4 (May 21, 2008)

Feature added: TcpServer device
Feature added: loading / saving configuration
Improved user interface
Code refactoring

Version 0.3 (May 13, 2008)

Feature added: x86_64 platform support
Fixed some emulation bugs
Improved user interface

Version 0.2 (May 5, 2008)

Feature added: virtual pair
Fixed emulation bugs (thanks to Dmitry Fomin for his detailed error reports)
Fixed problems with deleting virtual devices.

Version 0.1 (April 13, 2008)

Feature added: virtual connector
Feature added: virtual data splitter