CHAINTECH ES-676M Guide de l'utilisateur télécharger pdf (Page 7)

Chapter 3

2. Typematic Rate (Chars/Sec)

The typematic rate sets the rate at which characters on the screen repeat when a key is

pressed and held down.

3. Typematic Delay (Msec)

The typematic delay sets how long after you press a key that a character begins

repeating.

Security Option

The Supervisor and/or User Password functions shown in Figure 3-1 must be set to take

advantage of this function. See Section 3.11 for password setting information. When the

Security Option is set to System, a password must be entered to boot the system or enter

the BIOS setup program. When the Security Option is set to Setup, a password is

required to enter the BIOS setup program.

APIC Mode

This item can enable or disable the APIC (

Advanced Programmable Interrupt

Controller). Due to compliance to PC2001 design guide, the system is able to run in

APIC mode. Enabling APIC mode will expand available IRQs resources for the system.

Available options are [

Enabled

] and [

Disabled

MPS Version Control For OS

This item allows you to select which MPS (

Multi-Processor Specification

) version to be

used for the operating system. You need to select the MPS version which is supported by

your operating system. To find out which version to use, consult the vendor of your

operating system. Available options are [

1.4

] and [

1.1

OS Select For DRAM >64MB

If your system's DRAM is larger than 64MB and you are running OS/2, select OS/2 as

the item value. Otherwise, set the item value to Non-OS/2 for all other operating systems.

Video BIOS Shadow

Enabling this function will allow the Graphic card’s BIOS setting to be imaged onto the

RAM for a better performance. Leave the default setting at Enable for better system

performance.

Small Logo (EPA) Show

This setup allows photo that is EPA. Logo.

Show POST CODE

Enabling this function can show POST error code on the screen before proceeding to

operating system.

3-3 Advanced Chipset Features

By choosing the [

Advanced Chipset Features

] option from the CMOS Setup Utility

menu (Figure 3-1), the screen below is displayed. This sample screen contains the

manufacturer's default values for the motherboard.

All of the above settings have been determined by the mother

board

manufacturer and should not be changed unless you are absolutely sure of

what you are d

oing. Explanation of the DRAM timing and chipset features

setup is lengthy, highly technical and beyond the scope of this manual. Below

are some abbreviated descriptions of the functions in this setup menu.

Chapter 3

DRAM Clock/DRAM Timing

1. DRAM Clock

This selecting option allows you to control the DRAM speed.

2. DRAM Timing

The function allows you to enable or disable the DRAM timing by SPD. When

set to Manual, you can select the SDRAM CAS Latency, Bank Interleave,

Precharge to Active(Trp), Active to Precharge(Tras), Active to CMD(Trcd),

DRAM Command Rate, DRAM Burst Len, and CPU read DRAM Mode

configuration. It is recommended to keep the default setting for stable system

operation.

AGP & P2P Bridge Control

1. AGP Aperture Size

This function determines the amount of system memory that is given to the AGP card.

Options range from 4MB to 256MB. This is a dynamic memory allotment in that the

AGP card will only use the amount of memory that it needs. The remaining memory not

in use will be available for the system to use. For example, if 16MB is allotted to the

AGP card and the card only needs 8MB, the remaining 8MB will be available for system

use.

2. AGP Driving Control/Value

The [Manual] setting allows you to manually select the AGP driving value. However, it

is recommended that you keep the default setting [Auto] to allow the system to

automatically determine the appropriate AGP driving value.

3. AGP Fast Write

Selecting [

Enabled

] to allow Fast Write Protocol for 4X/2X AGP to function.

4. AGP Master 1 WS Write/Read

It is recommended to keep the default setting for stable system operation.

CPU & PCI Bus Control

1. CPU to PCI Write Buffer

Enabling this function will enhance the system efficiency.

2. PCI Master 0 WS Write

When Enabled, writes to PCI bus are executed with zero wait states.

3. PCI Delay Transaction

The chipset has an embedded 32-bit posted write buffer to support delay transactions

cycles. Select Enabled to support compliance with PCI specification version 2.1.

4. Delay Prior to Thermal

Available options: [4 Min] through [32 Min].

Memory Hole

Enabling this function will reserve the memory address space between 15MB and 16MB

for ISA expansion cards. However, enabling this function will result in not allowing the

system to have access to memory above 16MB. Please note that some expansion cards

require this setting to be enabled. The default setting is Disabled. If Auto Configuration is

enabled, you must set the DRAM timing function to 60ns or 70ns, depending on the type

of DRAM you install.

System BIOS Cacheable

Enabling this function allows caching of the system BIOS ROM at F0000h-FFFFFh,

resulting in better system performance. However, if any program writes to this memory

area, a system error may result. It is advised to leave this setting. Caching the system

BIOS results in better performance than shadowing the system BIOS.

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CHAINTECH ES-676M Guide de l'utilisateur Page 7

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