Chapter 3
Software Installation and Configuration
© National Instruments Corp.
3-5
AT-GPIB for SCO UNIX
The last field contains the DMA channel used by the GPIB. The default is
channel 7. To disable DMA, change the setting to -1. To select another
DMA channel, enter the number of that DMA channel.
Base I/O Address and Interrupt Vector Number
Open the
System
file, which contains the following lines:
ib
Y
1
6
1
5
260
27F
0
0
ib
Y
1
6
1
10
240
25F
0
0
If you installed only one AT-GPIB board, change only the first line of
information.
The sixth field is the interrupt vector number.
The seventh field is the starting I/O address (in hex) of the board.
The eighth field is the ending I/O address (in hex) of the board.
The seventh and eighth fields must be in the range between 0 and 3FF for
the AT-GPIB board. The value of the eighth field is obtained by adding 31
decimal or 1F hex to the value of the seventh field.
If you changed the base I/O address, interrupt vector number, or DMA
channel, refer to Appendix B, Special Instructions for Changing the
Software Settings , for special instructions.
B. Install the Driver
The NI-488M driver must be installed and linked into the kernel. It can be
installed automatically or manually.
Note:
For easy installation, automatic installation is recommended.
Automatic Installation
To automatically install the NI-488M driver, go to the working directory
that you created earlier in this chapter under the A. Set Up a Working
Directory section and enter the following command.
