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ASUS CUW User’s Manual
Expansion Cards
3. H/W SETUP
3. HARDWARE SETUP
3.7.3 Assigning DMA Channels for ISA Cards
Some ISA cards, both legacy and PnP, may also need to use a DMA (Direct Memory
Access) channel. DMA assignments for this motherboard are handled the same way
as the IRQ assignment process described earlier. To select a DMA channel, see PCI/
PNP ISA DMA Resource Exclusion in 4.4.3 PCI Configuration. NOTE: The on-
board audio by default uses DMA1.
IMPORTANT:
To avoid conflicts, reserve the necessary IRQs and DMAs for
legacy ISA cards (see PCI/PNP ISA IRQ Resource Exclusion in 4.4.3 PCI Con-
figuration). Choose Yes in IRQ xx Used By ISA and DMA x Used By ISA for
those IRQs and DMAs you want to reserve).
3.7.4 Audio Modem Riser (AMR) Slot
This connector supports a specially designed audio and/or modem card called an AMR.
Main processing is done through software and controlled by the motherboard’s Intel I/
O Controller Hub (ICH). This provides an upgradeable audio and/or modem solution
at an incredibly low cost. There are two types of AMR, one defined as primary and
another defined as secondary. This motherboard uses the primary channel so that a
secondary AMR can coexist without the need to disable the onboard CODEC. The
motherboard’s onboard CODEC must be disabled when using a primary AMR.
NOTE: An AMR is not included with this motherboard.
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CUW
CUW Audio Modem Riser (AMR) Connector
Содержание CUW
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