### Using Digi's Diagnostic Program for ISA Adapters

To help you verify the operation of your Digi adapter, you can use a diagnostics tool that Digi provides. The diagnostic runs a series of tests on the adapter.

#### Accessing the Program

There are two versions of the diagnostic. The one you must use depends on the type of adapter you have:

UD-CISC.EXE (Xe, C/X adapters)
UD-RISC.EXE (Xr, Xem, EPC/X adapters)

The utility must be run from DOS. If you can't see the CD drive from DOS, you can create a diagnostic diskette to use. For information about creating a diskette, see:

Creating Installation and Diagnostic Diskettes

#### Running the Program

1. Start MS-DOS.

2. Insert the diskette or CD into it's drive.

3. Enter one of the following depending on the model of adapter you have. (On the CD these directories are located under the Diags directory):
   \RISC\UD-RISC.EXE
   \CISC\UD-CISC.EXE

4. Select an adapter family from the list.

5. Now you need to enter at least two parameters: the adapter's I/O address (as set on the DIP switches, and the Base Memory Address .
   Depending on the version of the diagnostic program, the other parameters may already be filled in with default values similar to the following:

   Window Size: | 32K
   IRQ: | Disabled
   Machine Environment: | ISA
   Port: | 1
   EIA-232/422: | 232
   Loopback: | No
   Continuous Test: | Yes
   Stop on first: | Yes

6. Now press <R> to start the tests. The tests will be run consecutively, and pass/fail status will be indicated on the right hand side of your screen.

7. If all the tests pass, the adapter is functioning correctly and you are ready to install the device driver software. Make a note of the Host Base Address and I/O address before exiting the diagnostic program (you will need to specify these when you install the device driver software).

8. If failures occur, the most likely cause is a memory conflict. Try a different Base Memory Address and execute the diagnostics again. If you get a Hardware Reset Error, try a different I/O address (be sure to set the DIP switches for the new address).

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