7 dma channel setting – ADLINK ACL-8216 User Manual
Page 20
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12 • Installation
2.7 DMA
Channel
Setting
The A/D data transfer of ACL-8216 is designed with DMA transfer capability.
The setting of DMA channel 1 or channel 3 is controlled by the jumpers JP8
and JP7. The possible settings are shown below.
Note: On floppy disk only machine, we suggest you to set DMA level 3. If
you have hard disk equipped computer, level 1 is preferable.
DRQ
JP8
DACK
JP7
1
3
NO DMA
DMA 1
DMA 3
(Default)
X
DRQ
JP8
DACK
JP7
DRQ
JP8
DACK
JP7
1
3
X
1
3
X
1
3
X
1
3
X
1
3
X
Figure 2.4 DMA Channel Setting
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