Release Notes PN 93000160
Digi RealPort Service
Version 1.0.7
Windows NT® 4.0
Software Package PN 40001738
Software Manual PN 92000290
05/04/2000
CONTENTS
Section Description
1 Introduction
2 Supported Products
3 Bug Fixes
4 Known Limitations
5 Installing Modem 4em or 8em Modules
6 Printers
7 History
1. INTRODUCTION
The RealPort service provides Windows NT seamless access to serial ports
on Digi PortServer or PortServer II products.
The Digi PortServer Product family allows Windows NT users to attach
serial devices (modems, terminals, and printers) to the Ethernet based
terminal server. Users can use Windows NT RAS, Citrix, dial-out modem
pooling applications and terminal server applications such as Point-of-Sale
(POS) with the flexibility of terminal server connected devices.
The RealPort Service requires the TCP/IP driver to be installed and
properly configured.
2. SUPPORTED PRODUCTS
PortServer
PortServer II
3. BUG FIXES
A close/open race condition has been resolved. The symptoms of this error
were exhibited by invalid data returned when using the DOS command
MODE, or a printer problem after a system reboot.
A transmit latency condition has been resolved. The symptom of this error
involves single character data incurring latencies of 120ms. This symptom
was only encountered when an application buffer character input, but only
issue a single character to the driver. The driver was designed with the
assumption that the application would send a buffer of data when available
and not parcel the data a character at a time.
A fix for serial printers has been added.
4. KNOWN LIMITATIONS
PortServer generates receive data errors when running 16 ports full duplex
at 57600 BAUD. Changing the baudrate of a serial printer requires deleting
the printer device and then re-adding the device with a different baudrate.
This is a print manager limitation in Windows NT 4.0.
Software flow control characters when set to the null (0x00) character for
the Xon and Xoff character will be ignored by the driver.
The IOCTL_SERIAL_XOFF_COUNTER is not supported.
5. INSTALLING MODEM 4EM or 8EM MODULES
Windows NT 4.0. Copy mdmdigi.inf from the RealPort installation disk into
the %SystemRoot%\inf directory. Then add the modems from modem control
panel.
6. PRINTERS
Printers using the RealPort driver should be manually started, or the
RealPort driver must be started before the printer services.
7. UNINSTALL
Windows NT 4.0
1. Run Control Panel | Network
2. Select Services
3. Select the Digi RealPort Service from the Network Services list
4. Choose Remove
7. HISTORY
Version 1.0.3
August 25, 1998 - Bug fixes.
Version 1.0.2
November 7, 1997 - Bug fixes.
Version 1.0.1
July 21, 1997 - Initial product release.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.