Assigning Dma Channels For Isa Cards; Audio Modem Riser (Amr) Slot - Asus MEW User Manual

3. HARDWARE SETUP
If the system has both Legacy and PNP ISA cards installed, IRQs are assigned to
PNP cards from those not used by Legacy cards. The PCI and PNP configuration of
the BIOS setup utility can be used to indicate which IRQs are being used by Legacy
cards. For older Legacy cards that does not work with the BIOS, you can contact
your vendor for an ISA Configuration Utility.
An IRQ number is automatically assigned to PCI expansion cards after those used
by Legacy and PNP ISA cards. In the PCI bus design, the BIOS automatically as-
signs an IRQ to a PCI slot that has a card in it that requires an IRQ. To install a PCI
card, you need to set something called the INT (interrupt) assignment. Since all the
PCI slots on this motherboard use an INTA #, be sure that the jumpers on your PCI
cards are set to INT A.

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:
legacy ISA cards (see PCI/PNP USA IRQ Resource Exclusion in 4.4.3 PCI
Configuration). 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
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.
1 0 1
R
MEW
MEW Audio Modem Riser (AMR) Connector
28
To avoid conflicts, reserve the necessary IRQs and DMAs for
0 1 0
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