Appendix C
Troubleshooting and Common Questions
©
National Instruments Corporation
C-5
Use a Different Memory Address
The Device Manager in Windows 2000 (NT Diagnostics in Windows NT)
does not report all resource conflicts. If you are having problems with your
current resource settings, try different ones. Memory base address
0x0D4000 is free on many systems.
Put the Card in Polled Mode
Putting the card in polled mode is a good way to eliminate one variable.
Use the Interface Configuration utility to put the card in polled mode by
completing the following steps:
1.
Select
Start»Programs»National Instruments FBUS»Interface
Config
.
2.
In the
Interface Config
window, select the icon of the card you want
to change and click the
Edit
button. If you are adding a card, click the
Add Interface Device
button.
3.
Select the
Polled Mode
checkbox.
4.
Note the memory base address your card is using. Select a different
Basic Configuration that does not include an IRQ. This is the polled
mode option. Then, change the memory base address back to its
original setting.
Use a Visitor Address
Using a visitor address is a good way to troubleshoot an address conflict
since the card will find and take an available address.
Problems Using Manufacturer-Defined Features
NI-FBUS uses identifying information in the actual device to locate the
device description for the device. The identifying information includes four
resource block parameters:
MANUFAC_ID
,
DEV_TYPE
,
DEV_REV
, and
DD_REV
. If the identifying information is incorrect, NI-FBUS will not be
able to locate the device description for the device. When it has located the
device description, NI-FBUS matches the block types in the device
description with the actual blocks in the device by using the Item ID of the
block characteristics record.
If the blocks in the device do not match the blocks in the description, or if
there is no appropriate device description for the manufacturer, device type,
device revision, and device description revision being returned by the
device, then there is a device description mismatch. In either case,
