Release Notes P/N 93000159_N

                    Digi Realport Driver Package
                           Version 3.0.0e
                                 for
               SCO OpenServer 5.0.4c, 5.0.5, and 5.0.6

                    Software Package P/N 40001044_M

                          September 9th, 2002



CONTENTS
Section         Description
1               Introduction
2               Supported Products
3               Enhancements
4               Bug Fixes
5               Known Limitations
6               History
7               Notes



Introduction

   The Digi RealPort driver is a set of TCP network drivers that provides
   real tty functionality for Digi's Ethernet-based Serial Products.

   This driver supports SCO Openserver 5.0.4, 5.0.5 and 5.0.6

   This package also contains:

      1) drpadmin:	Allows root the ability to add or remove Realport
                        products in the driver.
      2) ditty:         Digi's stty replacement.
      3) dinc:          A cu replacement.  Simpler to use than cu.
      4) dgipserv:      Stores and saves an IP on selected Digi products.
      5) dgelreset:     Allows root the ability to reboot a local or remote
                        EtherLite.


Supported Products

    PortServer
    PortServer II
    PortServer TS
    Digi One RealPort Device Server
    Etherlite 2, 80, 160 and 162 units with RealPort firmware


Enhancements

    This is the first release of the completely rewritten
    Realport driver.

    ditty printer option is now supported.

    If you uninstall the software, you are given the option to save your
    configuration.  If selected, the driver and utilities save all the
    current inittab and ttytype entries of all configured Realport ports.
    This allows for easy driver upgrades without losing any configuration.

    Added headers in drpadmin for "show" command.


Bug Fixes

    Fixed panic when calling ioctl with IOC_SELECT and 
    other commands. Corrected unlocking.

    Fixed problem where "delete" in drpadmin would
    not kill the daemon. Problem involved "/etc/dprd".

    Fixed problem where the poll rate of the driver was set
    too high. It would cause the system cpu usage to
    increase dramatically when used with specific applications.

    Fixed problem where multiple opens to the same serial 
    port might cause programs to fail.


Known Limitations

    This driver has a limit of 255 Realport products.
    Each Realport product configured will use 1 major number.
    SCO Openserver has a fundamental limit of 255 major numbers for
    everything in the system.
    This means the actual limit of the amount of Realport products 
    that the driver supports will be based on how many major 
    numbers your system has left to give the driver.  
    Check /etc/conf/cf.d/mdevice and the
    man mdevice(F) page for more information.

    SCO Openserver requires us to declare the amount of majors we plan
    to use and then rebuild the kernel, and reboot.
    When adding new Realport products to your system after installing the
    driver, you may be required to rebuild and reboot your system.

    SCO Merge is no longer supported.

    The default TCP port for RealPort units is 771.  This port is officially
    reserved for rtip.  If you are using rtip you will need to configure
    your units and RealPort driver to use a different TCP port.


History

   This is a complete rewrite of the existing Realport driver.
   All of the old History no longer applies.


Notes

    The fastbaud table of substitute baud rates is now:
        0 - 0
        50 - 57600
        75 - 76800
        110 - 115200
        134 - 131657
        150 - 153600
        200 - 230400
        300 - 460800
        600 - 921600
        1200 - N/A
        1800 - N/A
        2400 - 2400
        4800 - 4800
        9600 - 9600
        19200 - 19200
        38400 - 38400

    The new ioctls to get and set custom baud rates are defined here:
    #define DIGI_SETCUSTOMBAUD (('e'<<8) | 106) /* Set custom baud */
    #define DIGI_GETCUSTOMBAUD (('e'<<8) | 107) /* Get custom baud */