Read about using IBCONF in Chapter 2 of this manual:
NI-488.2™ Software Reference Manual for MS-DOS
June 1997 Edition
Part Number 370889A-01
https://www.ni.com/pdf/manuals/370889a.pdfDefault Values
The following are the default values of the software.
• There are 32 devices with symbolic names DEV1 through DEV32.
• There are four access boards with symbolic names GPIB0, GPIB1,
GPIB2, and GPIB3. The access board names cannot be changed.
• Access board GPIB0 is enabled. GPIB1, GPIB2, and GPIB3 are
disabled.
• Each GPIB interface board has its own default setting for the base I/O
address, interrupt setting, and DMA channel. Check the Getting
Started manual that came with your interface board for these settings.
Use This Board (Board Characteristic Only)
If you do not want the driver to try to access a board at the selected base
address (because you do not have a board in the system), select no for this
option. When this field is set to no, the driver does not try to access the
board's hardware. It returns the error ENEB as soon as a program tries to
access the board.
Base I/O Address (Board Characteristic Only)
This field specifies the I/O address of the GPIB board. It must be set to the
same value as the base I/O address setting for the GPIB board itself.
Setting the base I/O address level is explained in the Getting Started manual
that you received with your GPIB interface board. On Micro Channel and
some other systems, you can change the I/O address only by booting the
reference diskette. In this case, this field is Read-only.
DMA Channel (Board Characteristic Only)
This field specifies the DMA channel to be used by the GPIB interface
board. It must be set to the same value as the DMA channel (arbitration
level) setting for the GPIB board itself. Setting the DMA channel level is
explained in the Getting Started manual that you received with your GPIB
board. On Micro Channel and some other systems, you can change the
DMA channel only by booting the reference diskette. However, you can
enable or disable the use of DMA with IBCONF.
Interrupt Level (Board Characteristic Only)
This field specifies the interrupt line used by the GPIB interface 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. On Micro Channel and
some other systems, you can change the interrupt level only by booting the
reference diskette. However, you can enable or disable the use of interrupts
with IBCONF.