Driver Installation - For Windows 95
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(1) Introduction:
-----------------
This document describes the procedure to install Windows 95 driver
for ENW-9501 10/100Base-TX PCI Fast Ethernet Adapter. User should read the
procedures in section (3) before installation.
(2) Location of Driver:
-----------------------
\WIN95\DC21X4.SYS
(3) Installing Driver Procedure on Microsoft Windows 95 :
---------------------------------------------------------
Windows 95 is the operating system with Plug & Play feature. It
will auto-detect this adapter as DEC DC21140 adapter and allocate
its default driver for it. But this adapter with auto sensing feature,
and the default drivers within Windows 95 can not fully support it.
So user must follow the following procedures to upgrade drivers.
1. The drivers should be upgraded before the adapters be inserted into
PCI slot. User can use upgrade.bat (in WIN95 directory of driver
diskette) to do this job. User can run upgrade.bat in DOS, or
in the DOS session of WIN95 by choosing:
"Start" ---> "Programs" ---> "MS-DOS Prompt"
The third choice is the Run shortcut:
"Start" ---> "Run"
When use the upgrade.bat, user should keyin the source drive
and Window 95 directory as the parameters. Such as:
a:\win95\upgrade a: c:\win95
2. After the drivers upgraded successfully, power off the PC.
3. Insert the adapter into the PCI slot of PC.
4. After power on, the windows 95 will detect this new device as DEC's
DECchip 21140 adapter then install the corresponding driver for it.
When the Windows 95 detected the new drivers has been within, it
will prompt user to keep the new driver or not. User should choose
"Yes".
5. When installation completely, Windows 95 will prompt user to
restart. After reboot, the new adapter will work fine.
NOTE1: If your adapter still not work fine after installation, try to
change the setting of "Store and Forward" and "Transmit
Threshold" properties.
NOTE2: The upgrade.bat will copy the new driver to the correct
subdirectory:
(1). for NDIS 3 driver: DC21X4.SYS
copy to Windows 95 SYSTEM subdirectory.
(e.g. c:\win95\system)
(2). for NDIS 2 driver: DC21X4.DOS
copy to Windows 95 directory.(e.g. c:\win95)
(3). for ODI driver: DC21X4.COM
copy to Windows 95 directory.(e.g. c:\win95)
(4). for driver information file: NETPCI.INF
copy to Windows 95 INF subdirectory.
(e.g. c:\win95\inf)
(4). Parameters:
----------------
ConnectionType:
o AutoSense Senses dynamically the media ports
o 100BaseTx To connect 100BaseTx Ethernet hubs
o 100BaseTx Full_Duplex To connect 100BaseTx Full Duplex hubs
o 10BaseT To connect 10BaseT Ethernet hubs
o 10BaseT Full_Duplex To connect 10BaseT Full Duplex hubs
ReceiveBuffers = {8..64} (default: 16)
Number of buffers allocated by the
driver in the Receive ring.
MapRegisters = {4,8,16} (default: 8)
Number of map registers allocated
by the adapter.
BurstLength =
CSR0<PBL> 1 doubleword
2 doublewords
4 doublewords
8 doublewords
16 doublewords (default)
32 doublewords (DC21140 only)
StoreAndForward =
Select the StoreAndForward mode if high
PCI latencies causes Transmit Underruns
CSR6<SF> 1 Enabled
0 Disabled (default)
TransmitThreshold =
CSR6<TTM,TR> 72 bytes
96 bytes (DC2104X's default)
128 bytes
160 bytes
256 bytes (DC21140 only)
512 bytes (DC21140's default)
1024 bytes (DC21140 only)
(5). Error Messages:
--------------------
DC21X4_ERRMSG_REGISTRY 0x01
DC21X4_ERRMSG_ALLOC_MEMORY 0x02
DC21X4_ERRMSG_SROM 0x03
DC21X4_ERRMSG_MEDIA 0x04
DC21X4_ERRMSG_LOAD_CAM 0x05
DC21X4_ERRMSG_SYSTEM_ERROR 0x06
DC21X4_ERRMSG_TXM_JABBER_TIMEOUT 0x07
(6). Driver Initialization Errors:
----------------------------------
o NDIS_ERROR_CODE_UNSUPPORTED_CONFIGURATION
DC21X4_ERRMSG_REGISTRY
The AdapterType Registry's key is missing or its value
is unsupported by the adapter board
o NDIS_ERROR_CODE_ADAPTER_NOT_FOUND
No board matching the AdapterCFID Registry's key value was found
plugged into the PCI bus or in the slot specified in the Registry
o NDIS_ERROR_CODE_OUT_OF_RESOURCES
DC21X4_ERRMSG_ALLOC_MEMORY
Not enough memory to allocate space for the Adapter data block
o NDIS_ERROR_CODE_INVALID_VALUE_FROM_ADAPTER
DC21X4_ERRMSG_SROM
Invalid data read from the adapter's serial ROM
o NDIS_ERROR_CODE_NETWORK_ADDRESS
No readable burnt_in or software configured station address
o NDIS_ERROR_CODE_UNSUPPORTED_CONFIGURATION
DC21X4_ERRMSG_MEDIA
The selected media port is not supported by the board.
o NDIS_ERROR_CODE_INTERRUPT_CONNECT
Interrupt initialization failed
o NDIS_ERROR_CODE_TIMEOUT
DC21X4_ERRMSG_LOAD_CAM
DC21X4 CAM initialization failed
(7). Driver Run Time Errors:
----------------------------
o NDIS_ERROR_CODE_HARDWARE_FAILURE
DC21X4_ERRMSG_SYSTEM_ERROR
System_Error interrupt (bus parity error)
o NDIS_ERROR_CODE_HARDWARE_FAILURE
DC21X4_ERRMSG_TXM_JABBER_TIMEOUT
Transmit Jabber timer expired
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.