1. cdjet_sl.zip Driver
2. README.TXT File Contents

README.TXT Driver File Contents (cdjet_sl.zip)

			SETPORT UTILITY
	Laptop Parallel Port Configuration Utility
			VERSION 1.0
                     (SOFTPAQ SP2158)

PRODUCTS AFFECTED: Contura Aero, LTE Elite, Contura 400 Series, 
LTE 5000 Series, Armada 1100 Series, and Armada 4100 Series

OPERATING SYSTEM:  DOS, Windows 3.1, Windows 95

DESCRIPTION:  The SETPORT utility allows a user to configure the 
parallel port in the following modes on the Compaq laptop 
products mentioned above that support these modes: 
- Standard unidirectional mode
- Bidirectional mode
- EPP mode
- ECP mode 
SETPORT uses the IEEE 1284 BIOS specification.

Installation and Use
--------------------

1.  Determine which mode switch is required.

SETPORT    -- Reads the current mode the port is in, but doesn't alter mode.
SETPORT 1  -- Places the port in standard mode.
SETPORT 2  -- Places the port in Bidirectional mode.
SETPORT 3  -- Places the port in EPP mode. 
SETPORT 4  -- Places the port in ECP mode.
SETPORT ?  -- Displays a help screen.

2.  Add a line to either AUTOEXEC.BAT or CONFIG.SYS (not both) 
    to load SETPORT, as in the following examples.

IMPORTANT:  SETPORT must be loaded prior to any other drivers that require
Bidirectional, EPP, or ECP support.

To load SETPORT from the AUTOEXEC.BAT file, add the following line:

<drive>:\<directory>\SETPORT.EXE <Mode Switch>

The following example will place the parallel port in bidirectional mode.
Example:  C:\CPQ\SETPORT.EXE 2

To load SETPORT from the CONFIG.SYS file, add the following line:

DEVICE=<drive>:\<directory>\SETPORT.EXE <Mode Switch>

The following example will place the parallel port in EPP mode.
Example: DEVICE=C:\CPQ\SETPORT.EXE 3

3.  Save the changes to the appropriate file, and exit the editor.

4.  Reboot the computer for the changes to take effect.

5.  The following message should be displayed briefly as the computer 
    restarts:
    "The parallel port is in XXXXXXX mode." 

NOTE:  It may be very difficult to see this message if SETPORT is loaded 
from the CONFIG.SYS file on a computer running Windows 95.  

Setport will return an errorlevel 0 if successful, and an
errorlevel 1 if unsuccessful, allowing conditional branching in the
AUTOEXEC.BAT file if necessary.

Known Limitations
------------------
Setport will not work if the parallel port is configured to use 3BCh.  
Setport will not work in a Windows NT environment.

Selecting the proper mode
--------------------------
    Different parallel port devices require different modes of operation.
The best way to determine what a device requires is to read the documentation
that shipped with your parallel port device, or to contact the manufacturer of
the device.
    The best performance is achieved by using ECP or EPP modes, while
bidirectional mode is usually faster than standard mode.  Try to use the
fastest mode your device supports, and if that doesn't work then try the next
slower mode.  Some third party drivers require specific switch settings to
tell their driver what mode you have configured the port for.

Adaptec
--------
Adaptec's MiniSCSI EPP adapter typically works best in bidirectional mode,
and it requires the /M2 switch on its driver in Win95 under adapter settings.
It will also require this switch on the config.sys driver in a
DOS/Windows 3.1 environment.

Epson
------
The Epson Actionscanner II assumes the port is in bidirectional mode; therefore,
it will require the bidirectional switch on some Compaq PC's.

Troubleshooting Errors
----------------------
Listed below are several different error messages and how to resolve them.

1.  The following error message can be caused by several different problems.

"This system does not support the IEEE 1284 BIOS specifications
 or an application is trapping the printer interrupt calls.
 Verify Windows is not trying to capture print from the same LPT port.
 If you are using a network printer verify it is on a different LPT port."

  a.  If you are running Windows 95, check to make sure that the unit is not
      trying to capture print from the same port you are trying to change 
      the mode on.  This may be checked by the following.
	Click on "Start"
	Click on "Settings"
	Click on "Printers"
	Right Click on your default printer
	Click on "Properties" from the menu.
	Click the "Details" tab.
	Click the "Capture printer port" button.
	See if the parallel port is being captured.

  b.  This error can also be caused by other third party software that traps
      the printer interrupt (Interrupt 17h).  Network printer drivers 
      sometimes will do this.  If you are using a network printer try setting 
      it up on a different LPT port like LPT2 or 3.

  c.  Some Compaq computers do not support this interface.  The Compaq
      laptops mentioned above support this interface.  It is very
      possible that future products will also support this interface, but
      testing was only done on these products.

  d.  On the LTE 5000 family be sure you have the lastest version of ROM.
      Some of the early versions of ROM didn't support this interface 
      properly.  Versions P5.07 or later should function correctly.

2.  "Unable to configure parallel port to this mode."

    This message is caused by attempting to put the parallel port in a
    mode it doesn't support.  ECP mode is not supported on the Compaq Aero,
    LTE Elite, or Contura 400 Series.  These systems support ECP mode in 
    Windows 95, but not through the IEEE 1284 BIOS interface.

3.  "This port address does not support EPP.  Change the I/O address
     setting of your parallel port in Setup."

  a.  This message is often caused by having the parallel port configured 
      to use I/O address 3BCh.  It is somewhat an industry standard that 
      this address does not support EPP or ECP mode.  Change the setting of 
      the parallel port address by going into F10 Setup to configure the 
      parallel port to 378h or 278h.

  b.  Setport will not work properly with Windows NT.  Windows NT traps the 
      INT 17h calls, so this utility will not work.  NT also handles the 
      parallel port differently than DOS, Windows 3.1, or Windows 95, which 
      will cause it to generate this error message.

Copyright 1996, Compaq Computer Corporation.  All rights reserved.

Product names mentioned herein may be trademarks and/or registered trademarks 
of their respective companies