Changing Hardware Configuration Settings
Appendix C
AT-GPIB/NI-488M/AT&T UNIX
C- 8
© National Instruments Corp.
Table C-5. DMA Channels for the AT-GPIB
Signal Lines
DMA
Channel
DMA
Acknowledge
DMA
Request
5
DACK5
DRQ5
6
DACK6
DRQ6
7
DACK7
DRQ7
You must position two jumpers to select a DMA channel. One jumper
selects the DMA Request line, and the other selects the DMA Acknowledge
line. You must move these two jumpers as a pair, and the DMA
Acknowledge and DMA Request lines that you select must have the same
numeric suffix for proper operation. Figure C-4 shows jumper positions for
selecting DMA channels 5 and 6.