Troubleshooting
Appendix B
VXI-AT2000/NI-VXI MS-DOS Getting Started
B-2
© National Instruments Corporation
VXIINIT Could Not Find the AT-MXI
When you run
VXIINIT
, it attempts to locate the AT-MXI board by accessing the I/O registers
that exist on the board. The AT-MXI board occupies 32 bytes of I/O space at a default base
address of 340h (hex). The base I/O address of the AT-MXI is set in both hardware and software
and the two settings must agree. If the hardware and software settings do not agree, you may
receive an error message that reads
VXI
device
not
found
.
In hardware, you use a set of DIP switches on the AT-MXI board itself if you need to change the
setting of the base I/O address. Refer to the Base I/O Address Selection section of Chapter 2,
Hardware Configuration and Installation, for more information about selecting a base I/O
address for the AT-MXI. Keep in mind that if you change the base I/O address of the AT-MXI,
you must make a corresponding change to the AT-MXI configuration software.
To change the I/O address in software, you need to run the VXI resource editor program, either
VXIEDIT
or
VXITEDIT
, and use the Logical Address Configuration Editor to make the
change. Refer to the Configuring the NI-VXI Software section of Chapter 3,
NI-VXI Software
Installation and Configuration, for instructions on how to use the VXI resource editor program.
After you verify that the software settings correspond to the hardware setting, try the following
methods to deal with this problem.
1. Ensure that you are using the proper
VXIINIT
program for your system. For example, the
VXIINIT
program distributed with the MC-MXI cannot be used to initialize the AT-MXI.
2. If the hardware and software settings match, ensure that the I/O registers settings of the
AT-MXI do not conflict with any other hardware in the PC AT. If they do, change the
settings of the AT-MXI or the other device.
3. If the hardware and software settings correspond and do not conflict with any other hardware
in the PC AT, make sure the AT-MXI is securely seated in the ATbus slot or try another
ATbus slot.
4. If the message persists, there is still some reason that the NI-VXI software cannot access the
I/O registers of the AT-MXI. If possible, try the AT-MXI in another computer.
VXIINIT Could Not Find Specific Files
VXIINIT
may inform you that it cannot find one or more of the configuration or table files, for
example,
File
VXILA.CFG
not
found
. Other files for which error messages are generated
include
VXIBUS.CFG
,
VXIDEV.CFG
,
DVXI.CFG
,
MFNAMEID.TBL
, and
MODEL.TBL
.
There are two possible causes for this error message.
1. The file(s) may have been deleted accidentally. If the file does not exist in your
TBL
directory after you installed your software, you can find it on your original NI-VXI
distribution media and restore it manually.
2. The
NIVXIPATH
variable may be pointing to the wrong directory. The path should be set in
the
AUTOEXEC.BAT
file to point to the root directory of the NI-VXI files. By default, this
directory is
C:\NIVXI
.
