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                                Avanstar Family
                          Device Driver for PC- or MS-DOS
                            Software Installation Guide

        650118-03

        c Digi International, Inc. 1995
        All Rights Reserved


All brand and product names are trademarks or registered trademarks of 
their respective holders.

        Digi International Inc.
        6400 Flying Cloud Drive
        Eden Prairie, MN 55344


Information in this document is subject to change without notice and does 
not represent a commitment on the part of Digi International, Inc.

Digi International provides this document "as is", without warranty of any 
kind, either expressed or implied, including, but not limited to , the implied 
warranties of fitness or merchantability for a particular purpose. Digi 
International may make improvements and/or changes in this manual or in 
the product(s) and/or the program(s) described in this manual at any time.

This product could include technical inaccuracies or typographical errors. 
Changes are periodically made to the information herein; these changes may 
be incorporated in new editions of the publication. 

CONTENTS

Chapter 1               Driver Installation.................... 1
        1.1     Introduction................................... 1
        1.2     Installation................................... 1
                1.2.1   Installation on EISA Bus Systems....... 2
                1.2.2   Installation on ISA Bus Systems........ 3
                1.2.3   Installation on MCA Bus Systems........ 4

Chapter 2       Naming and Configuring Avanstar Ports.......... 5
        2.1     Using AVXMODE to Configure a Port.............. 5
        2.1.1   Line Settings.................................. 6
                Flow Settings.................................. 7

Chapter 1
Driver Installation


1.1	Introduction
The diskette that comes with this manual contains the AvanstarTM family 
DOS device driver and the support software for its configuration and use.

This driver provides the interface between an ISA (Industry Standard 
Architecture), EISA (Extended Industry Standard Architecture), or Micro 
ChannelTM  bus computer and up to four Avanstar family adapters.  At this 
time, the driver supports the following Avanstar adapters:

        Avanstar Xe (100e)              (EISA bus adapter)
	Avanstar Xi (100i)	    	(ISA bus adapter)
	Avanstar Xm (100m)		(Micro Channel adapter)  


1.2	Installation
Follow these steps to install the Avanstar DOS device driver:
 
	1.	Copy the files on the driver diskette to a directory on the 
system 	fixed disk drive.  In the examples that follow, we will assume that 
the contents of the driver diskette were copied to the directory C:\AVX.

	2.	Edit the system CONFIG.SYS file to add the appropriate 
DEVICE= line.  This line is specific to the type of installation being 
performed (EISA/ISA/MC).  Refer to the appropriate section in this manual 
for the proper syntax of the DEVICE= line.

	3.	Reboot the system.  You now have access to all installed 
		Avanstar ports.

1.2.1	Installation on EISA Bus Systems

	1.	Install the Avanstar Xe (100e) board(s) by following the 
	instructions in the Avanstar Family Hardware Installation Guide.

2.	Configure the board with the EISA configuration utility             
and the CFG file on the Option Configuration diskette.  Note that 
EISA boards do not have any hardware settings. 

The default driver installation will allow access to all ports on the first four 
Avanstar Xe (100e) boards that the driver encounters in the system.  The 
driver finds the first four boards by searching each EISA system slot-
starting with slot 1-until either four boards are found or the maximum of 
sixteen EISA system slots have been searched.

In this default scenario, the first port on the first board will be named 
COM3, and each succeeding port on each succeeding board will have a 
COM name incremented by one.  For instance, in a system with two 
installed Avanstar Xe (100e) boards-each connected to a 16-port panel- 
the first port on the first board will be named COM3, the first port on the 
second board will be named COM19, and so on.

For a default installation, place the following line in the CONFIG.SYS file:

	DEVICE=C:\AVX\AVXE.SYS

There is also the option of beginning the port naming with a name other 
than COM3.  To do so use the following line in the CONFIG.SYS file 
instead of the line shown above:

	DEVICE=C:\AVX\AVXE.SYS /CN=x

where x is a number between 1 and 5 inclusive.  For example, if the number 
specified was 5, port naming would begin with COM5.

1.2.2	Installation on ISA Bus Systems
Before installing an Avanstar Xi (100i) board, set the switches for the I/O 
address by following the instructions in the Avanstar Family Hardware 
Installation Guide.

The default driver installation will allow access to all ports on the first four 
Avanstar Xi (100i) boards that the driver encounters on the system.  The 
driver finds the first four boards by searching each possible I/O location that 
an Avanstar Xi (100i) board could have its
I/O register located at until either four boards are found or the maximum of 
eight I/O addresses have been searched.

In this default scenario, the first port on the first board will be named 
COM3, and each succeeding port on each succeeding board will have a 
COM name incremented by one.  For instance, in a system with two 
installed Avanstar Xi (100i) boards-each connected to a 16-port panel- 
the first port on the first board will be named COM3, the first port on the 
second board will be named COM19, and so on.

For a default installation, place the following line in the CONFIG.SYS file:

	DEVICE=C:\AVX\AVXI.SYS

There are two options available to ISA installations.  The first is the 
capability of beginning the port naming with a name other than COM3.  The 
second is the ability to locate the installed board(s) dual port RAM at a 
location other than the default of D0000h.  To do so, use the following line 
in the CONFIG.SYS file instead of the line shown above:

	DEVICE=C:\AVX\AVXI.SYS /CN=x,DP=y

x can be any number between 1 and 5 inclusive.  For example, if the number 
specified is 5, port naming would begin with COM5.

y is a 5-digit hex number between A0000 and F0000 where you want the 
dual port RAM to be located.  The dual ports of multiple Avanstar Xi (100i) 
boards may occupy ranges, or they may overlap.  There is no advantage to 
assigning different ranges for these boards, and you save address space by 
mapping all the dual ports to the same space.

It is not necessary for both sets of parameters to be specified.  If you want 
only to change the port naming, omit the DP=y from the line shown above, 
for instance.

1.2.3	Installation on MCA Bus Systems

	1.	Install the Avanstar Xm (100m) board(s) by following the 
instructions in the Avanstar Family Hardware Installation Guide.
	
	2.	Configure the board with the configuration utility on the 
	Reference diskette and the ADF file on the Option Configuration 
	diskette.  Note that Micro Channel boards do not have any 
	hardware settings. 

The default driver installation will allow access to all ports on the first four 
Avanstar Xm (100m) boards that the driver encounters on the system.  The 
driver finds the first four boards by searching each MCA system slot-
starting with slot 1-until either four boards are found or the maximum of 
eight MCA system slots have been searched.

In the default scenario, the first port on the first board will be named COM3 
and each succeeding port on each succeeding board will have a COM name 
incremented by one.  For instance, in a system with two installed Avanstar 
Xm (100m) boards-each connected to a 16-port panel-the first port on 
the first board will be named COM3, the first port on the second board will 
be named COM19, and so on.

For a default installation, place the following line in the CONFIG.SYS file:

	DEVICE=C:\AVX\AVXM.SYS

There is also the option of beginning the port naming with a name other 
than COM3.  To do so use the following line in the CONFIG.SYS file 
instead of the line shown above:

	DEVICE=C:\AVX\AVXM.SYS /CN=x

where x is a number between 1 and 5 inclusive.  For example, if the number 
specified was 5, port naming would begin with COM5.

Chapter 2
Naming and Configuring 
Avanstar Ports


2.1	Using AVXMODE to Configure a Port
The AVXMODE utility is used to change line and/or flow control settings 
for a specific Avanstar port.  Configuration changes made with AVXMODE 
are valid until the next time the computer is booted or the configuration is 
changed again with AVXMODE.  At system boot time, the port 
configuration reverts to its default state.  

The AVXMODE command line has the following form:

	AVXMODE port:baud,parity,databits,stopbits [,flow] 

where port is the name of the port to be configured.  The positional 
parameters (baud, parity, data bits and stop bits) must be entered in the 
order specified above.  The flow parameters may be entered in any order, 
separated by commas.

To view the current settings for a port, simply omit all parameters from the 
command line.  The following command line:

	AVXMODE COM3

displays the current line and flow settings for port COM3.

To configure line settings, place the desired values in the proper parameter 
positions.  This command line:

	AVXMODE COM7:9600,N,8,1

sets line settings for port COM7 to 9600 bits per second, no parity, 8 data 
bits, 1 stop bit.
 
If any parameter is omitted, its current value is retained.  For instance, in the 
following command line:

	AVXMODE COM7:,,8

the data bits configuration for port COM7 is set to 8, but all other line and 
flow settings remain the same.

Flow parameters consist of a tag followed by an "=" and ended with a 
parameter value.  In the command line:

	AVXMODE COM5:,,,,IXON=ON,DTR=OFF

Automatic Transmit Flow Control is set to ON, while DTR Enable mode is 
set to OFF for port COM5.  Note that the order in which flow parameters are 
specified on the command line is not significant.  The command line below 
functions identically to the command line shown previously:

	AVXMODE COM5:,,,,DTR=OFF,IXON=ON

Sections 2.1.1 and 2.1.2 describe possible line and flow settings that can be 
established with AVXMODE.


2.1.1	Line Settings
	baud	Valid baud rate settings are dependent upon the particular 
type of Avanstar board that is installed.  Most common baud rate settings 
are supported.  See the Avanstar Family Technical Reference Manual for 
board-specific information of this type.  The initial baud rate is 1200.

	parity	Valid parity settings are N (none), O (odd), E (even),     M 
(mark) or S (space).  The initial parity setting is          E (even parity).

	databits	Valid data bit settings are 5, 6, 7 or 8.  The initial number 
of data bits is 7.

	stopbits	Valid number of stop bits is 1 or 2.  The initial number of 
stop bits is 1.

2.1.2	Flow Settings
	DTR	This specifies the DTR enable state.  Valid values are ON 
and OFF.  When DTR=ON, the DTR output will be asserted as long as the 
port is open.  When DTR=OFF, the DTR output will always be in the 
negated state.  The initial setting is OFF.

	OCTS	This specifies output handshaking using CTS state.  Valid 
values are ON and OFF.  When OCTS=ON, the port will not transmit data 
unless the CTS input is asserted.  When OCTS=OFF, the state of the CTS 
line has no effect on data transmission.  The initial setting is OFF.


RTS	This specifies RTS enable state.  Valid values are ON, OFF, HS, 
and TOG.  When RTS=ON, the RTS output will be asserted as long as the 
port remains open.  When RTS=OFF, the RTS output will always be in the 
negated state.  When RTS=HS, the RTS output will be asserted when the 
port is ready to receive data and negated when the port is not ready to 
receive data for any reason.  The initial setting is OFF.  When RTS=TOG, 
the RTS output will be asserted as long as there is data in the transmit 
buffer.

IXON	This specifies transmit XON/XOFF handshaking.  Valid values are 
ON and OFF.  The initial value is OFF.  When IXON=ON, the driver will 
transmit data until the XOFF character is received.  Transmission continues 
upon reception of the XON character.  When IXON=OFF, the driver does 
not respond to XON/XOFF characters when received.

IXOFF	This specifies receive XON/XOFF handshaking.  Valid  values are 
ON and OFF.  The initial value is OFF.   When IXOFF=ON, the driver will 
transmit an XOFF character when the receive buffer is full.  When more  
data can be received, the driver will transmit an XON.

RXTO	This specifies the receive timeout state.  When  RXTO=ON, the 
driver uses the standard MS-DOS timeout of approximately 1 second and 
then returns if  the request is not complete.  When RXTO=NW (No-Wait), 
the driver returns immediately whether the request is completed or not.  
When RXTO=INF (Infinite), the driver will never return until the request has 
been completed.  The initial setting is ON.

(For systems with configurable external panels only)

INT    This specifies the communication interface type.  When INT=232, the 
configurable external panel interface will be set to EIA-232 mode.  When 
INT=422, the interface will be set to EIA-422 mode.  The initial state is EIA-
232.