DOCUMENT #..... 3077
MODELS......... Xircom® CreditCard Ethernet+Modem 33.6 Adapter
OS............. Windows* 95 OEM Service Release 2 (OSR2)(Versions 4.00.950B/4.00.950C)
DRIVER......... CEM33XPS.SYS
LAPTOP......... Generic Not Machine Specific
DATE MODIFIED.. July 31, 2001

General

To determine which version of Windows 95 isinstalled on your computer:

• Open the Control Panel
• Double click the System icon to display the System Properties window.
• On the General tab (displayed by default), note the version number listed under SYSTEM:
• THE INSTRUCTIONS IN THIS DOCUMENT ARE INTENDED FOR USE ON COMPUTERS RUNNING VERSIONS 4.00.950B OR 4.00.950C ONLY.
• If the version number listed is 4.00.950 or 4.00.950A then a retail version of Windows 95 OEM is installed on the computer.
• The information in this document DOES NOT apply to your installation.
• Obtain document 3076 from the Xircom Web site or BBS to assist with your installation.

Important Notes

1. It is recommended that you verify with the computer's manufacturer that your computer is using the latest available BIOS version.
2. Consult the documentation included with your computer for the appropriate points of contact.
3. Verify that your laptop is Windows 95 compatible by reviewing the HARDWARE.TXT file included with Windows 95 or by consulting the Windows* 95 Hardware Compatibility List (HCL) maintained by Microsoft.

This section will assist with the installation of the Xircom CreditCard Ethernet+Modem 33.6 Adapter (CEM33). It is divided into two subsections:

• Pre-installation Instructions
• CEM33 Adapter Installation Instructions

1. Open the System Editor (Start, Run, type SYSEDIT, and click OK).
   
2. Select the CONFIG.SYS file either by clicking on the CONFIG.SYS Title Bar or by selecting Window (on Toolbar) and then selecting CONFIG.SYS from the displayed list.
   
3. Select Search from the Toolbar
   
4. Click Find and type EMM386 in the dialog box
   
5. Click Find Now.
   
6. If found, change the EMM386 line to read as follows:
   
   --DEVICE=C:\WINDOWS\EMM386.EXE NOEMS
   
   
7. Select the SYSTEM.INI file either by clicking on the SYSTEM.INI Title Bar or by selecting Window from the Toolbar and selecting SYSTEM.INI from the displayed list.
   
8. Select Search from the Toolbar
   
9. Click Find and type EMMEXECLUDE in the dialog box
   
10. Click Find Now. If found modify the line to read as follows:
    
    --EMMEXCLUDE=C000-CFFF
    
11. On computers employing Xircom® Cardbus controllers this line should read:
    
    --EMMEXCLUDE = C000-CBFF (See Cardbus note in Section 4 Additional Notes)
    
12. Only one EMMEXCLUDE statement should be present. If there are additional statements of this type present they should be commented (placing a semi colon at the beginning of the line) or deleted. If the EMMEXCLUDE line is not present then add the above line to the (386Enh) section as follows:
    
    --SYSTEM.INI: (386Enh) EMMEXCLUDE=C000-CFFF (use C000-CBFF on Cardbus computers)
    
13. Save all files and exit the System Editor.

Step 2

• Remove SystemSoft .INF file references.
• Open Windows Explorer (Start, Programs, Windows Explorer).
• Ensure that the Show All Files option is selected (Select View from the Toolbar, Click Options, Choose Show All Files)
• Click Apply
• Click OK
• Search for SXIR*.INF:
• Select Tools from the Toolbar
• Click Find
• Choose Files or Folders
• In the "Name" dialog box, type SXIR*.INF
• In the "Look" in dialog box type C:\\WINDOWS\\INF
• Select the Include Subfolders box
• Click Find
• Delete this file if present

• Rename MDMGEN.INF to MDMGEN.ORI
• Close Windows Explorer
• Reboot your computer.
• You are now ready to install the Xircom multifunction adapter.

1. Start the computer WITHOUT the CEM33 adapter inserted.
2. Allow Windows 95 to boot fully.
3. Place the CEM33 Installation Disk (Disk 1) in the floppy drive or be sure that you know the full path to the directory where the CEM33 installation files are located.
4. Insert the CEM33 adapter into the computer's lower PCMCIA slot. Windows 95 should automatically detect the presence of the adapter and indicate that it has found new hardware by displaying a dialog box entitled "Update Device Driver Wizard " Prior to displaying the dialog box, Windows 95 may indicate that it is building a driver information database. If this process occurs, allow it to complete. (Note: If Windows 95 does not detect the adapter upon insertion, proceed to Section 2 on Troubleshooting the CEM33 Installation.)
5. The text in the dialog box should read "This wizard will complete the installation of: Xircom CreditCard Ethernet+Modem 33.6."
6. Click Next.
7. Windows 95 will search the floppy drive for the adapter driver. If the CEM33 installation files are located in a directory on the hard drive select the Other Location button and supply the path to this directory.
8. Once Windows 95 indicates that it has found the driver, click Finish.
9. Windows 95 should read the installation files and complete the installation of the CEM33 adapter. During this process Windows 95 may indicate that it is building a driver information database. It should also display successive "New Hardware Found" windows for each side of the adapter (Modem child device and Network child device). At any point during the process Windows 95 may request additional files. If this occurs enter the path to the Windows 95 source files. All files required for this installation reside in either the C:\\WINDOWS\\OPTIONS\\CABS directory or on the CEM33 Installation disk.
10. When the installation process has completed go to the Windows 95 Device Manager (Control Panel, System icon, Device Manager tab). The Xircom CreditCard Ethernet+Modem 33.6 adapter entries should be listed as follows:
    • Modem: Modem of Xircom CreditCard Ethernet+Modem 33.6
    • Multifunction Adapters: Xircom CreditCard Ethernet+Modem 33.6 (Multifunction Parent Device)
    • Network adapters: Network of Xircom CreditCard Ethernet+Modem 33.6
    Note: In some instances Windows 95 OSR2 may locate the Multifunction Parent Device as a second entry in the Modem group, instead of placing it in the Multifunction adapters group, as follows:
    • Modem: Modem of Xircom CreditCard Ethernet+Modem 33.6 Xircom CreditCard Ethernet+Modem 33.6
    • Multifunction Parent Device
    • Network adapters: Network of Xircom CreditCard Ethernet+Modem 33.6
    
    In these cases there may be no Multifunction adapters group listed. This is acceptable and will not affect the functionality of the adapter. The Multifunction Parent Device will behave exactly the same way regardless of the location of its entry in the Device Manager.
    
    Note: If any of these entries are preceded by a yellow exclamation point (!) or red "X" then an error condition exists. In the event that this occurs proceed to Section 2 Troubleshooting the CEM33 Adapter Installation for assistance.

11. Restart the computer so that the Xircom Country Select software can launch and scan the available COM ports for a Xircom modem.
12. If the CEM33 modem is detected, the Country Select window appears displaying the default country "United States".
13. Click exit if this selection is appropriate. If a different country selection is needed select the desired country,
14. Click Save
15. Click Exit.

This section is designed to assist with the complete removal or the CEM33 adapter, its associated files and subsequent registry entries caused by the installation. Successful completion of these steps returns the Windows 95 operating system to a state conduciveto the proper installation of the Xircom adapter. After completing these steps return to Section 1 CEM33 Adapter Installation for assistance with installing the Xircom adapter.

1. Start the computer without the CEM33 present. If the computer is already running with the CEM33 present, perform a complete shutdown and remove the adapter.
2. Restart the computer and allow Windows 95 to boot fully.
3. In the Control Panel, double click the Modems icon.
4. Remove all references to the CEM33 adapter by selecting each entry and clicking Remove .
5. In the Control Panel, double click the Network icon.
6. Remove all references to the CEM33 adapter by selecting each entry and clicking Remove .
7. When finished click Close .
8. Choose No when prompted to restart the computer.
9. Delete the following files:
   
   - WINDOWS\INF\DRVDATA.BIN, DRVIDX.BIN, MDMCEM33.INF, MFCEM33.INF, NETCEM33.INF
   - WINDOWS\INF\OTHER*.INF (only files pertaining to Xircom)
   - WINDOWS\INF\OTHER*.INF (only files pertaining to Xircom)
   
10. Using Windows Explorer, delete the following subdirectory tree:
    
    - XIRCOM\XAPPS, XIRCOM\CEM33
    
    (Note: The WINDOWS\\INF directory is hidden by default. To view this directory open Windows Explorer, select View from the Toolbar, choose Options from the menu and select Show All Files. Click Apply then OK to return to Explorer. Warning: The following step involves making modifications to the system Registry. The instructions here should be followed exactly, and you should read them through before beginning. Manually making incorrect modifications to the Registry could cause your system to malfunction. If you are unsure about working with the Registry, we recommend that you consult your Microsoft documentation for clarification regarding Registry terminology and use of the Registry editor. It is also recommended that you back up the Registry before proceeding.
11. In the following registry path descriptions, HKLM refers to the HKEY_LOCAL_MACHINE key.
12. Start the registry editor (Start, Run, type Regedit, and click OK).
13. Remove from the registry:
    
    - HKLM\Enum\PCMCIA\Xircom-CreditCard_Ethernet_+_Modem_33.6
    - HKLM\System\CurrentControlSet\Control\InstalledFiles\MDMCEM33.INF, MFCEM33.INF, NETCEM33.INF, CEM33XPS.SYS
    
    
14. Click on the plus sign beside the following key in the registry path:
    
    - HKLM\System\CurrentControlSet\Services\Class\MultiFunction
    
15. Under this key one or more numerical keys (000x) will be displayed.
16. Click on each of these and view the contents of the right pane of the editor to determine if the key in question is making reference to the CEM33 adapter. If so, remove the key from the Registry.
17. Perform this verification for each numerical key listed here. REMOVE ONLY THOSE KEYS THAT REFERENCE THE CEM33 ADAPTER.
18. In a similar manner, perform the same operation for any numerical keys listed under:
    
    HKLMSystem\CurrentControlSet\Services\Class\ ModemHKLM\System\CurrentControlSet\Services\Class\Net
    
19. Close the registry editor.
20. Shut down the computer and then restart it.
21. Open the Control Panel
22. Double click the PC Card (PCMCIA) icon to ensure that the PCMCIA Wizard has run. If the PC Card Properties window indicates Empty Socket 1, Empty Socket 2 return to Section 1 CEM33 Adapter Installation.
23. If the PCMCIA wizard appears accept the default answer No for each question and Yes to restart the computer.
24. Return to Section 1 and begin the installation.

1. Computers with Xircom® Cardbus Controllers
   Many new laptop computers are now equipped with Cardbus PC Card slots. Cardbus is a relatively new 32-bit extension of the PCMCIA 16-bit interface standard. Cardbus slots support adapters designed specifically for Cardbus, as well as standard PCMCIA adapters such as the Xircom CEM33 adapter. However, in some ways Cardbus slots and their associated controllers behave differently than standard PCMCIA slots, and this can occasionally result in installation difficulties. The following items should be noted:
   A. PCMCIA controllers are listed in the Device Manager under the PCMCIA Socket group. Standard PCMCIA controllers will normally indicate one controller for the system (a common type is a PCIC or compatible PCMCIA controller). Cardbus controllers, on the other hand, will indicate a separate controller entry for each slot, so normally there will be two controller entries displayed. Common types of Cardbus controllers include the following:
   • Toshiba* TOPIC* controller
   • Texas Instruments* 1130 Series* (1130, 1131, 1132)
   • Texas Instruments* 1200 Series* (1220, 1250)
   • Cirrus* Logic* 6832

   B. Xircom recommends a SYSTEM.INI memory exclusion range of C000-CBFF with Cardbus controllers instead of the standard PCMCIA adapter range of C000-CFFF.

   C. Computers with Cardbus capability frequently include Card and Socket Management software of some kind. While standard PCMCIA slots usually do not require this software in Windows 95, it often is necessary for Cardbus support.

2. Disabling an infrared serial communications port.
   If your computer contains an infrared communications port as well as other additional hardware features, it may be necessary to disable the infrared port to free up an interrupt for the Xircom CEM33 adapter to use. If this is necessary, the device should be disabled both at the System BIOS level (if possible) and within Windows 95.
   To disable the port at the system BIOS level, you will need to enter the system BIOS menu or run the computer's BIOS setup utility program. Refer to your computer's documentation for complete information on disabling an infrared communications port.
   To disable the port in Windows 95:
   1. Go to the Device Manager (Control Panel, System, Device Manager).
   2. Double click the Ports (COM and LPT)icon.
   3. Double click the entry for the infrared communications port. At the bottom of the Properties window there will be a section entitled Device Usage.
   4. Remove the check mark from the box for each hardware profile in which you wish the port to be disabled (if only one box is present, this will be it).
   5. Click OK. If you disabled the device in the current profile (usually this will be the case), a red 'X' should appear on the entry listed for the infrared device.
   6. If there are multiple infrared device listings we recommend that you disable all of them, at least until you have successfully installed the adapter.
   
   
3. Modifying Adapter Resources
   In a standard installation (even one that may exhibit an error condition) the resource values for the CEM33 adapter appear in the following format:
   • Input/Output Range 02E8-02EF
   • Input/Output Range 0120-013F
   • Interrupt Request 10
   • Memory Range 000D2000-000D2FFF
   • Memory Range 000D4000-000D7FFF
   1. The value represented by the first Input/Output range identifies the I/O port addresses assigned to the modem side of the adapter (this value is discussed in greater detail under Troubleshooting the Modem Installation earlier in this document).
   2. The value of the second Input/Output range represents the I/O port addresses assigned to the network adapter. These ranges seldom cause difficulties and the CEM33 installation is rarely affected by whatever range is assigned here as long as these locations reside somewhere in lower memory (commonly it will fall within the range of 0100h to 04FFh).
   3. The Interrupt Request values commonly used are 03, 05, 10, 11, and 15. However, with many new computers that include several value added hardware devices many of these (and in some cases all of these) interrupts are already in use before the adapter is inserted. Such as interrupt 03 which is traditionally assigned to COM2 and COM4 can be taken by a Serial IR device. Interrupt 05, traditionally assigned to LPT2 is often taken by the onboard sound card. Interrupts 10, 11, and 15 are regularly taken by devices such as a Digital Sound Processor, Docking Stations and SCSI devices. In order to free an interrupt for the CEM33 adapter it may be necessary to disable one of these devices.
   4. Section 4 Additional Notes covers the steps necessary to disable the more common devices.
   5. Memory values can fall anywhere within the range 000C0000 to 000EFFFF, but the CEM33 is not the only device that uses memory segments in these ranges. Xircom recommends using the D-range (000D0000-000DFFFF) memory segment for best results. In some cases the adapter MUST be assigned to memory blocks in this range in order for the network portion of the adapter to function properly.
   6. As stated above, the characteristics that apply to the first Input/Output range are somewhat different than the rest. This range applies to the modem. The range specified will dictate which COM port the modem is assigned to, and this value cannot be changed directly. This Input/Output range can ONLY be altered by changing the setting listed in the 'Setting based on' box to a different 'Basic configuration'. Normally the associations are as follows:
   • Basic Configuration 0000 02E8-02EF COM4
   • Basic Configuration 0001 03E8-03EF COM3
   • Basic Configuration 0002 02F8-02FF COM2
   • Basic Configuration 0003 03F8-03FF COM1
   • Basic Configuration 0004 02E8-02EF COM4
   • Basic Configuration 0005 03E8-03EF COM3
   • Basic Configuration 0006 02F8-02FF COM2
   • Basic Configuration 0007 03F8-03FF COM1

   
   The difference between the first group (0000-0003) and the second (0004- 0007) is that on some computers, choosing the settings in the first group will prevent the other resource values (interrupt, memory, and the other Input/Output range) from being modified. Therefore, if you are making manual changes and you wish (for example) to use the modem on COM3, we recommend choosing basic configuration 0005.

4. Client to protocol association matrix.
   • Client Type
   • Protocol Type
   • Client for Microsoft* Networks NetBEUI (default)TCP/IP IPX
   • Client for Netware* Networks IPX/SPX compatible protocol Novell* NetWare* Client32 IPX 32-bit Protocol for NetWare Client 32 IPX/SPX compatible protocol
   • Client specific protocols or TCP/IP.
     
     
   THIS DOCUMENT SUBJECT TO CHANGE WITHOUT NOTICE.
   

This applies to:

Xircom® CreditCard Ethernet+Modem 33.6 Adapter (CEM33)