AMD-761 datasheet(20/264 Pages) AMD

20 / 264 page

Overview

Chapter 1

AMD-761™ System Controller Software/BIOS Design Guide

24081D—February 2002

Preliminary Information

1.2

Recommended AMD Athlon™ Processor

SYS_CONFIG Settings

Table 2 provides recom mendatio ns for se tting s in the

AMD Athlon processor System Configuration register in

systems that utilize the AMD-761 system controller.

Table 2.

Recommended Settings for AMD Athlon™ Processor SYSCFG

Bit Field

Name

BIOS

Setting

Comments

[22]

EvictEn

An Evict command, when set, is sent as

part of an INVD instruction. The Evict

command has no function in the

AMD-761™ system controller.

[17]

SysUcLockEn

A LockToggle command, when set, is sent as

part of a LOCK instruction prefix and certain

other instructions. LockToggle has no

function in the AMD-761 system controller.

[16]

ChxToDirtyDis

The AMD Athlon™ processor and the

AMD-761 system controller support

Change-To-Dirty commands.

[13]

SysFillValIsD1

[11]

ClVicBlkEn

ClVicBlkEn, when set, causes all evicted

clean blocks to cause the CleanVictimBlk

system interface command. This setting

has no function with the AMD-761 system

controller.

[10:8]

SetDirtyEnE

There are three set-to-dirty enables: Set-

DirtyEnE, SetDirtyEnO, and SetDirtyEnS. If

a given enable is set and a cache block

must make a transition from E-to-M, O-to-

M, or S-to-M, then the AMD Athlon proces-

sor performs the action indicated by the

setting of the ChxToDirtyDis field. How-

ever, if a given enable is cleared, the pro-

cessor takes no externally visible action

when the desired transition is performed.

Change to dirty commands are not needed

by the AMD-761 system controller.

SetDirtyEnO

SetDirtyEnS

AMD-761 Datasheet(PDF) 20 Page - Advanced Micro Devices

AMD-761 Datasheet(HTML) 20 Page - Advanced Micro Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL