AMD-761 Datasheet, PDF (223/264 Pages) Advanced Micro Devices – AMD-761-TM System Controller Software/BIOS Design Guide

24081D—February 2002
Preliminary Information
AMD-761™ System Controller Software/BIOS Design Guide
7 Recommended BIOS Settings
This chapter provides the recommended BIOS settings for the
initialization of some of the key AMD-761™ system controller
configuration registers.
Registers that change based on the system implementation,
such as memory space and sizing, AGP GART region, DDR
DIMM timing, etc., are not included here because they are very
platform-specific.
The following notes apply to the recommended settings tables
in this section:
„ All items keyed as BOLD CAPITALS should be set or
controlled by BIOS. This is mandatory. No setting can be
assumed by default.
„ Refer to the actual configuration register descriptions for
details of each bit. These can be found in “AMD-761™
System Controller Programmer’s Interface” on page 9 of this
document.
„ The final and precise definition of bits in the SPD of a DDR
DIMM can be found in JEDEC reference materials and
specifications.
„ Values that are shown as x..xh or x..xb must be set by BIOS.
Numerical Values shown with h or b are preferred settings.
For any system enabling the S3 state, a number of core logic
PCI configuration registers and processor MSRs must be saved
or restored prior to suspending or restoring S3. Also, certain
hidden bits must be unmasked. These requirements apply to all
platforms regardless of segment and whether or not
AMD PowerNow!™ is used.
Chapter 7
Recommended BIOS Settings
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