trouble.txt Driver File Contents (4001865D.exe)

Device Compatibility Issues with Digi USB Ports

USB-Based Parallel Ports
Drivers which bypass the operating system's parallel port software
interface (and insist on directly accessing chips on the
motherboard) will not work with our USB parallel ports.
Unfortunately, this is fairly common on Windows 95 and 98, which
limits our compatibility with devices like ZIP drives, scanners,
and some printers with enhanced software support.

Tested Parallel Port-Based Devices
The following devices have been tested with the parallel port on
the AccelePort USB 2:

    Cannon BJC-240      Works fine; communicates bidirectionally
    HP LaserJet 6L PCL  Works fine; communicates bidirectionally
    HP LaserJet IIP     Works fine; standard Centronics
    Epson LQ/LX Dot     Works fine; standard Centronics
    Epson Color Stylus  Not compatible; driver requires chip level
      and Stylus Photo    access
    HP 7xx/8xx Ink Jet  Not compatible; driver requires chip level
    Scanners            Not compatible; drivers require chip level
    ZIP Driver          Not compatible; drivers require chip level
All tests have been on Windows 98 using the drivers on the
  Windows 98 CD.
Windows 98 does not query our LPT port for Plug and Play printers,
  so the 1284 Compatible printers are not auto detected.

USB-Based Serial Ports
As with parallel devices, any software or driver which bypasses the
operating system's native programming interface will fail with
anything except the chips on the motherboard. This is fairly unusual
for most programs that access serial ports, especially current
versions of them. Overall, interoperability and compatibility with
our USB-based serial ports should be very good to excellent.

Unsupported Driver Features
There are three features that not all of our USB devices support:

    DTR/DSR/DCD flow control    (only AccelePort USB 2 supports it)
    RTS "toggle"                (only AccelePort USB 2 supports it)
    TxContinueOnXoff            (none of our devices support it)

Below is a bit more information on each of these.

DTR/DSR/DCD flow control
This is basically using these signals INSTEAD of the RTS/CTS pair
for hardware flow control. It's rarely, if ever, used today, and
when "DTR flow control" needs to be supported by printers, it's
typically done by using RTS/CTS flow control and simply routing the
printer's DTR signal to our CTS instead of using the printer's RTS
signal (not used in this DTR flow control mode). In other words, by
using a different cabling method. Simple. 

RTS "toggle"
This is useful for those rare occasions where people are using
devices such as HAM radio modems, where they have to make sure that
RTS is asserted precisely before a data block transmission, and then
immediately (in hardware) deasserted after the last byte is
transmitted. In the HAM radio modem example, RTS is used to "key the
microphone", which is why it is needed there. One can manually
toggle RTS just fine, but the internal COM ports support a mode
where this is done automatically; Digi USB serial ports don't. 

This one should have no effect on you. If this is set to TRUE,
transmission is allowed to continue even when the input buffer is
full and has told the remote device to stop transmitting (XOFF
sent). If set to FALSE, then transmission can not continue until
input is ALSO allowed to continue (after the input buffer empties
some). Basically, there is no reason why transmission should have to
stop just because your input buffer is full, at least with our
products anyway, so we operate as if this were set to TRUE, and
don't support setting it to FALSE (or ignore it if it is set to

Doing a Complete Uninstall of the Digi USB Driver
Disconnect all of our units from the bus and do the following
procedure to clean the system, reboot, and re-install the drivers.

To clean up the registry:
  Delete DIGIBUS (if it's there).

  Open USB
    Delete all subkeys starting with VID_05C5.

Open HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class
  Open Ports, go through all subkeys, delete each one with
    PortDriver being dgusb0.vxd.

  Open USB, go through all subkeys, delete each one with
    ProviderName equal to "Digi International".

Start Windows Explorer, open \Windows\Inf\Other (actually should
  be %WINDIR%\inf\other, depending on what windows directory is),
  delete all files beginning with "Digi InternationalDGUSB". Then
  also go into the \Windows\System directory and remove all files
  that begin with dgusb (dgusb*.*).

Reboot the machine.

Plug the USB module in, and start over.

Windows 95 Issues
If you are using Windows 95 OSR2.1 with our products, it is strongly
recommended that you use version 4.03.1214 or later of the Microsoft
USBD.SYS file (in the system directory). To find out which version
you currently have installed, right click on the file, select
"Properties..." from the pop-up menu, and then select the "Version"
tag. If the version indicated is 4.03.1214, you have the latest
version as of this writing. Version 4.03.1212 was buggy and should
be avoided.
Download Driver Pack

How To Update Drivers Manually

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.

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