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Configure and Install Your PC/104-GPIB

Step

Configure the PC/104-GPIB DMA Channel

If Windows is unable to assign a DMA resource to the PC/104-GPIB, or if you are installing the

PC/104-GPIB in an 8-bit stack, you can configure DMA to none and still use the NI-488.2 software.

Change the jumper settings to match the DMA channel assigned to your board, or to no DMA if

you are installing the PC/104-GPIB in an 8-bit stack. You must set both the DMA Acknowledge and

DMA Request lines. By default, the PC/104-GPIB is configured to use DMA channel 5.

If you do not know what resources were assigned to your PC/104-GPIB, click here to Determine

Assigned Resources.

Table 11. PC/104-GPIB DMA Channel Settings

DMA Channel DMA Jumpers

5, 6, or 7

(DMA 7 is shown)

No DMA

DRQ7

DRQ5

DACK5

DRQ6

DACK6

DACK7

DRQ7

DRQ5

DACK5

DRQ6

DACK6

DACK7

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NI GPIB Series Specifications

General

Operating Systems Supported	Windows, Linux, macOS
Driver Software	NI-488.2
Bus Interface	IEEE 488
Data Transfer Rate	Up to 8 MB/s
Compatibility	IEEE 488.1, IEEE 488.2
Connector Type	24-pin IEEE 488 connector
Maximum Cable Length	20 m total system length
Number of Devices Supported	Up to 14 devices per bus