3Com Fast EtherLink 3C515-TX Release Note

R

ELEASE

 N

OTE

FOR

THE

F

AST

 E

THER

L

INK

 ISA 

3C515-TX NIC

Part No. 09-0948-002/May 1997

This release note provides operation tips for the 

3Com

® 

Fast EtherLink

®

 ISA NIC (network interface card) 

(3C515-TX). Please read the README.TXT file on the 

supplied 

EtherDisk

®

 diskette for the latest information 

about this product.

3C515-TX NIC Operation Tips

3Com testing has discovered bus mastering problems on 

some PCs. Refer to the README.TXT file for information 

on how to disable bus mastering.

The 3C515-TX NIC was designed for maximum 

performance and compatibility in ISA-only machines. For 

PCI/ISA hybrid or EISA PCs, use the 3Com 3C905-TX 

Fast EtherLink XL PCI NIC or the 3Com 3C597-TX 

Fast EtherLink EISA NIC.

Compaq 386/20e PC

3Com has observed during testing that the 3C515-TX 

NIC is not detected by the Compaq 386/20e PC.

Compaq DeskPro 433/L PC

The Plug and Play (PnP) range check cannot detect an I/O 

conflict with the on-board video set to the 0x3C0 I/O 

base address. This NIC works with other I/O base 

address settings.

IBM 486 SLC and IBM 386 SLC PCs

The 3C515-TX NIC does not run in bus master mode on 

these PCs. To disable bus mastering on your PC, refer 

to the README.TXT file.

Copyright © 3Com Corporation, 1997. 3Com and EtherLink are registered 

trademarks of 3Com Corporation. Other brand and product names may be 

registered trademarks or trademarks of their respective holders.

09-0948-002  Page 1  Friday, April 25, 1997  10:56 AM