User`s guide

7-10 NovaScale R422 Installation and User's Guide

SERR Signal Condition

This setting speciﬁ es the ECC Error conditions that an SERR# is to be asserted. The options

are None, Single Bit, Multiple Bit and Both.

4GB PCI Hole Granularity

This feature allows you to specify the size of PCI hole granularity for a PCI slot. If MTRRs

are not enough, this option may be used to reduce MTRR occupation. The options are: 256

MB, 512 MB, 1GB and 2GB.

Memory Branch Mode

This option determines how the two memory branches operate. System address space can

either be interleaved between the two branches or Sequential from one branch to another.

Mirror mode allows data correction by maintaining two copies of data in two branches.

Single Channel 0 allows a single DIMM population during system manufacturing. The

options are Interleave, Sequential, Mirroring, and Single Channel 0.

Branch 0/1 Rank Interleaving

Select enable to enable the feature of memory Interleaving for Branch 0 Rank/Branch1

Rank. The options are 1:1, 1:2 and 1:4.

Branch 0/1 Rank Sparing

Select enable to enable the sparing feature for Branch 0 Rank/Branch 1 Rank. The options

are Enabled and Disabled.

Enhanced x8 Detection

Select Enabled to enable Enhanced x8 DRAM UC Error Detection. The options are Disabled

and Enabled.

High Temperature DRAM Operation

When set to Enabled, the BIOS will refer to the SPD table to set the maximum DRAM

temperature. If disabled, the BIOS will set the maximum DRAM temperature based on a

predeﬁ ned value. The options are Enabled and Disabled.

AMB Thermal Sensor

Select Enabled to enable the thermal sensor embedded in the Advanced Memory Buffer

on a fully buffered memory module for thermal monitoring. The options are Disabled and

Enabled.

Thermal Throttle

Select Enabled to enable the function of closed-loop thermal throttling on a fully buffered

(FBD) memory module. In the closed-loop thermal environment, thermal throttling will be

activated when the temperature of the FBD DIMM device exceeds a predeﬁ ned threshold.

The options are Enabled and Disabled.

Global Activation Throttle

Select Enabled to enable open-loop global thermal throttling on a fully buffered (FBD)

memory module to make it active whenever the number of activate control exceeds a

predeﬁ ned number. The options are Enabled and Disabled.