32579BSuperI/O Module

 

Table 5-3. Standard Configuration Registers

Bit

Description

 

 

Index 75h

DMA Channel Select 1 (R/W)

Indicates selected DMA channel for DMA 1 of the logical device (1 - the second DMA channel in case of using more than one DMA channel).

7:3

Reserved.

 

 

 

2:0

DMA 1 Channel Select: This bit field selects the DMA channel for DMA 1.

 

The valid choices are 0-3, where a value of 0 selects DMA channel 0, 1 selects channel 1, etc.

 

A value of 4 indicates that no DMA channel is active.

 

Values 5-7 are reserved.

 

 

 

 

Index F0h-FEh

Logical Device Configuration (R/W)

Special (vendor-defined) configuration options.

 

96

AMD Geode™ SC1200/SC1201 Processor Data Book

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AMD SC1200, SC1201 manual 32579BSuperI/O Module, DMA Channel Select 1 R/W, Index F0h-FEh Logical Device Configuration R/W