IV. BIOS SOFTWARE

Chipset Features Setup

This “Chipset Features Setup” option controls the configuration of the board’s chipset. Control keys for this screen are the same as for the previous screen.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Details of Chipset Features Setup

Auto Configuration

The default setting of 60ns DRAM sets the optimal timings for items 2 through 6 for 60ns DRAM modules. If you are using 70ns DRAM modules, you must change this item to 70ns DRAM. See pages 12-13 for DRAM installation information.

DRAM Refresh Type

Leave on default setting of RAS Only as this is the current standard.

CPU-to-PCI IDE Posting

Leave on default setting of Enabled so that the CPU to PCI IDE posting cycles are treated as normal I/O write transactions.

USWC Write Posting

Leave on default setting of Enabled to allow USWC write posting during I/O bridge access.

CPU-to-PCI Write Post

The default setting of Enabled will increase the efficiency of the PCI bus and speed up the execution in the processor.

PCI-to-DRAM Pipeline

The default of Enabled will increase the bandwidth of the path between the PCI and the DRAM to enhance the PCI bus efficiency and DRAM accessing.

PCI Burst Write Combining

The default setting of Enabled will increase the efficiency of PCI bus by combining several CPU to PCI write cycles into one. VGA performance is increased by this action.

IV. BIOS (Chipset Features)

ASUS P/I-XP6NP5 User's Manual

37