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Chapter 2 Installation and Configuration
© National Instruments Corporation 2-5 DIO 6533 User Manual
AT Device Configuration
The plug and play feature of the AT-DIO-32HS makes it completely
software configurable. You can use software to configure the base I/O
address, DMA channels, and interrupt levels.
Bus Interface
The AT-DIO-32HS works in either a Plug and Play mode or a
switchless mode. These modes dictate how system resources are
determined and assigned to the device.
Plug and Play Mode
The AT-DIO-32HS is fully compatible with the industry-standard
Intel/Microsoft Plug and Play Specification version 1.0a. A Plug and
Play system arbitrates and assigns system resources through software,
freeing you from manually setting switches and jumpers. These
resources include the device base I/O address, DMA channels, and
interrupt channels. The AT-DIO-32HS is configured at the factory to
request these resources from the Plug and Play Configuration Manager.
The Configuration Manager receives all of the resource requests at
startup, compares the available resources to those requested, and
assigns the available resources as efficiently as possible to the Plug and
Play devices. Application software can query the Configuration
Manager to determine the resources assigned to each device without
your involvement. The Plug and Play software is installed as a device
driver or as an integral component of the computer BIOS.
Switchless Data Acquisition
You can use your AT-DIO-32HS device in a non-Plug and Play system
as a switchless DAQ device. A non-Plug and Play system is a system in
which the Configuration Manager has not been installed and which does
not contain any non-National Instruments Plug and Play products. Use
a configuration utility, such as the NI-PnP or Intel configuration
utilities, to enter the base address, DMA, and interrupt selections, and
the application software assigns them to the device.
Note: Avoid resource conflicts with non-National Instruments devices. For
example, do not configure two devices to have the same base address.