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Chapter 8 wibconf-Windows Interface Bus Configuration Utility
© National Instruments Corp. 8-11 NI-488.2 User Manual for Windows
DMA Channel (Board Characteristic Only)
This field specifies the DMA channel used by the GPIB board. It must be set to the same
value as the DMA channel (arbitration level for Micro Channel systems) setting for the
GPIB board itself. Setting the DMA channel is explained in the getting started manual
that you received with your GPIB interface board.
Note : On some systems, you can only enable or disable the use of DMA with the
wibconf utility. You cannot change the DMA channel setting. Refer to your
getting started manual for information on how to change the DMA channel.
Interrupt Jumper Setting (Board Characteristic Only)
This field specifies the interrupt line used by the GPIB board. It must be set to the same
value as the interrupt level setting for the GPIB board itself. Setting the interrupt level is
explained in the getting started manual that you received with your GPIB board.
Note : On some systems, you can only enable or disable the use of interrupts with the
wibconf utility. You cannot change the IRQ request line. Refer to your
getting started manual for information on how to change the interrupt level.
Enable Repeat Addressing (Device Characteristic Only)
Normally, devices are not addressed each time a read or write operation is performed. If
no is selected, read or write operations do not readdress the selected device if the same
operation was just performed with that device. Avoiding readdressing saves some time
when you have several GPIB operations to perform. But it might be a problem for some
older IEEE 488.1 devices that require their GPIB address to be sent with each I/O
operation. Select yes to enable repeat addressing in such a situation. The default option
for this characteristic is no.
GPIB-PCII/IIA Mode Switch
The driver that is included with the GPIB-PCII and GPIB-PCIIA interface board kits is
the same for each kit and can run with both boards. Use this field to indicate the type of
board that is installed in your system. You can have both a GPIB-PCII and a
GPIB-PCIIA interface board installed in your system at the same time.