1. 2500v240.exe Driver
2. DUPLEX.TXT File Contents

DUPLEX.TXT Driver File Contents (2500v240.exe)

Connection speed and duplex
This is an ASCII file called DUPLEX.TXT in the ATI 
CardAssistant INFO directory. Use a text editor or a 
word processor with a mono-space font such as Courier 
to print this file if needed for reference.
************************************************************
**                                                        **
**        Speed, Half-Duplex and Full-Duplex Options      **
**                                                        **
************************************************************

Definitions
===========

Duplex. A performance mode that determines how the adapter 
sends and receives packets over the link.

   Half duplex. The adapter performs one operation at a 
   time; it either sends or receives.

   Full duplex.The adapter can send and receive packets 
   simultaneously. This feature can improve adapter 
   performance by eliminating collisions. 

   Warning: The card and the connected device must be set 
   to the same duplex mode. Incorrectly forcing a specific 
   duplex mode may result in poor performance. Consult your 
   LAN administrator before forcing a duplex mode or if you 
   don't know the capabilies of the attached device.

Speed. The AT-2500TX adapter card operates at a link speed 
of either 10 Mbps or 100 Mbps. The operating speed must 
match the speed of the network segment (link). 

Autonegotiation. Method for automatically setting optimum 
speed and duplex between devices on a link. If the AT-2500
is connected to an autonegotiation-capable switch or hub or 
other network card, the devices negotiate the best 
combination of speed and duplex mode. Works for half-duplex 
connection with or without autonegotiation-capable link 
partner. Does not work for full-duplex connection unless 
connected to an NWAY-capable link partner.

NWAY. Another term for autonegotiation. Trademark National 
Semiconductor Corporation.


ATI AT-2500 PCI adapter connection choices
==========================================

Auto/NWAY (default)
-------------------
As shipped, the AT-2500TX adapter card is set up to adapt 
to the speed of the link. This is the best setting if the  
link is half duplex or if the link supports autonegotiation.
              
Manually configuring duplex and speed 
-------------------------------------
If the link is full duplex and does not support 
autonegotiation, manually set up the connection type using 
the SETUP25 utility on the CardAssistant diskette.

100 Mbps, Full

10 Mbps, Full

100 Mbps, Half

100 Mbps, Half

Note: Performance may suffer if the link partner is not 
full duplex and you configure the adapter to full duplex. 
Leave the adapter on half duplex if you are not sure.

1.  Boot the computer into DOS with no drivers loaded. (In 
    Windows 95, boot into the "Command prompt only" option. 
    Press the F8 key when the message "Starting Windows 95" 
    appears, and select "Command Prompt only", which is 
    Startup menu choice 6.)

2.  Insert the CardAssistant diskette in the floppy drive 
    and launch SETUP25; type "A:\setup25".

3.  Use the arrow keys to select the card (if necessary). 
    Press ENTER. 

4.  Select Configuration. 

5.  Use Enter and the arrow keys to select connection.  

6.  Press F10 to preserve your change.


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