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AMD-8151™ HyperTransport™ AGP3.0 Graphics Tunnel

25912 Rev. 3.06 March 2006

Revision Guide

22 Incorrect Value For DevA:0xA4[Host translation#]

Description

DevA:0xA4[Host translation#] is a read-only bit, fixed in the high state in the graphics tunnel. Per the

AGP specification, this indicates that core logic does not translate host transactions addressed to the

Graphics Aperature through the GART. However, on AMD platforms that use the graphics tunnel,

such host transactions can be translated through the GART.

Potential Effect on System

None.

Suggested Workaround

Software should presume that this bit is low for the graphics tunnel.

Fix Planned

Yes

Product Errata