Curtis AR-B1682 operation manual Advanced Chipset Setup

4-4. ADVANCED CHIPSET SETUP

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

AMIBIOS SETUP - ADVANCED CHIPSET SETUP

(C) 1999 American Megatrends, Inc. All Rights Reserved

Configure SDRAM Timeing by SPD	Enabled
SDRAM RAS# to CAS# delay	2 SCLKs
RAS# Precharge	2 SCLKs
CAS# Latency	3 SCLKs
Loadoff Cmd Timing	Auto
DRAM Integrity Mode	Non-ECC
Memory Hole	Disabled
Graphics Aperture Size	64MB
8bit I/O Recovery Time	1 Sysclk
16bit I/O Recovery Time	1 Sysclk
USB Function	Enabled
USB Keyboard / Mouse Legacy Support	Enabled
ATX Power Supply Controller	Disabled
LCD CRT Selection	Both
LCD Type	#5 640x480 TFT

Available Options :

Disabled

Enabled

ESC:Exit :Sel

PgUp/PgDn:Modify

F2/F3:Color

BIOS: Advanced Chipset Setup

Configure SDRAM Timing by SPD:

SPD is the abbreviation Serial Presence Detect. SPD takes accord the chip types, capacity, timing, voltage data. The system can auto adjust memory according to the data to reach the best situation.

SDRAM RAS# to CAS# delay:

When CPU save data from memory, it has to deliver RAS single first, and then CAS single. The item is to set up the interval between two singles.

RAS# Precharge:

This item is the time when RAS has to re-located.

CAS# Latency:

This item is to set up the time when memory receives one CAS single, after how much clock, the memory starts to write and read data.

Loadoff Cmd Timing:

It is the first read-write action under burst pattern

Memory Hole:

This reserves the 15MB to 16MB memory address space for use of ISA expansion cards.

Graphics Aperture Size:

The item is to set up AGP display to use how much memory to save Texture Data.

8 bit I/O Recovery Time:

The item is to set up CPU to demand ISA Bus 8 bit how much it takes to recovery.

16 bit I/O Recovery Time:

The item is to set up CPU to demand ISA Bus 16 bit how much it takes to recovery.

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