This file contains the technical information which should be referred to
if your system matches one of the following conditions or when you are
experiencing problems during installation:
1. using EMM386 version earlier than v4.49
2. 486 PCI motherboard, SIS 85C497/496 chip set, Award Software's BIOS
3. 486 PCI motherbaord, ALI M1489/1487 chip set
4. Acer 486 PCI Model - AcerPower DX4vp
---------------------------------------------------------------------------
1. using EMM386 version earlier than v4.49
Some PCI bus computers running MS-DOS EMM386, may trap and halt when PCI
drivers are loaded. This is a known incompatibility between EMM386
and some PCI BIOS implementations. To prevent this problem, run EMM386
version 4.49 or later. Version 4.49 is shipped with MS-DOS 6.22 and is
available from Microsoft on CompuServe.
On CompuServe, download the file EMM622.EXE located in Library One in the
Microsoft area. EMM622.EXE is a self-extracting archive which contains:
EMM386.EX#
EMM386.EX^
MSD.EXE
MSUPDATE.EXE
UPDATE.BAT
After running EMM622.EXE to extract the above files, run UPDATE.BAT which
will upgrade the files EMM386.SYS to version 4.49 and MSD.EXE to 2.11.
----------------------------------------------------------------------------
2. 486 PCI motherboard, SIS 85C497/496 chip set, Award Software's BIOS
Check the BIOS setup and ENABLE the "PCI MASTER Burst Disable/Enable"
setting for the PCI slot. It will resolve the problem in most cases.
----------------------------------------------------------------------------
3. 486 PCI motherbaord, ALI M1489/1487 chip set
Specify a specific keyword or setting for the network driver installation:
a. NetWare DOS client (DOS ODI driver \dos\dc21x4.com)
add the following keyword line for your NET.CFG file:
LINK DRIVER DC21X4
TX_THRESHOLD 3
b. NetWare server driver (dc21x4.lan)
specify TX_THRESHOLD parameter when loading server driver as follows:
load dc21x4 ...... TX_THRESHOLD=3 .....
c. Windows 95 - Network Adapter Property "Advanced" configuration
Set "Store and Forward" setting to "Enable".
d. DOS NDIS2-based driver (dc21x4.dos) installation
Specify TX_THRESHOLD parameter line in DC21X4$ driver section for your
PROTOCOL.INI file as follows:
DriverName = DC21X4$
.....
TX_THRESHOLD=FP
.....
e. OS/2 NDIS2-based driver (dc21x4.dos) installation
Specify TX_THRESHOLD parameter line in DC21X4$ driver section for your
PROTOCOL.INI file as follows:
DriverName = DC21X4$
.....
TX_THRESHOLD=FP
.....
----------------------------------------------------------------------------
4. Acer 486 PCI Model - AcerPower DX4vp
Since AcerPower DX4vp uses ALI M1429/1431/1435 chip set, refer to "#3."
above for problem solving.
--------------------------[end]---------------------------------------------
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.