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Motherboards - A7V266-EX (2.57 mb)
Motherboards - A7V266-EX (5.7 mb)
Anleitung Zusammenfassung
BIOS SETUPJumperFree Mode ASUS A7V266-EX User’s Manual 59 4. BIOS SETUP 4.4.1 Chip Configuration 4. BIOS SETUPChip Configuration SDRAM Configuration [By SPD] This sets the optimal timings for items 2–5, depending on the memory modules that you are using. The default setting is [By SPD], which configures items 2–5 by reading the contents in the SPD (Serial Presence Detect) device. The EEPROM on the memory module stores critical parameter information about the module, such as memory type, size, speed, voltage interface, and module banks. Configuration options: [User Defined] [7ns (143MHz)] [8ns (125MHz)] [By SPD] SDRAM CAS Latency [DDR:2.ST;SDR:3] This controls the latency between the SDRAM read command and the time that the data actually becomes available. NOTE: This field appears only when you set the SDRAM Configuration to [User Defined]. Configuration options: [DDR:2.ST;SDR:3T] [2T] SDRAM RAS Precharge Time [2T] This controls the idle clocks after issuing a precharge command to the SDRAM. NOTE: This field appears only when you set the SDRAM Configuration to [User Defined]. Configuration options: [3T] [2T] SDRAM RAS to CAS Delay [3T] This controls the latency between the SDRAM active command and the read/write command. NOTE: This field appears only if the SDRAM Configuration is set: [User Defined]. Configuration options: [3T] [2T] 60 ASUS A7V266-EX User’s Manual 4. BIOS SETUP SDRAM Active to Precharge Time [6T] To make changes to this field, set the SDRAM Configuration field to [User Defined]. Configuration options: [6T] [5T]A7V Bank Interleave [Auto] Configuration options: [None] [2 Banks] [4 Banks] [Auto] DRAM 4K/8K Page Enable [Auto] Configuration options: [Auto] [4K page enable] [8K page enable] DDR_1T/2T_ITEM [2T CMD] Configuration options: [1T CMD] [2T CMD] [Auto Mode] Burst Len [Auto] The DRAM burst length supports 8QW and 4QW. The default [Auto] detects the appropriate setting. Configuration options: [Auto] [4] Read Around Write [Enabled] Setting this field to [Enabled] allows the memory controller to store write data in its buffer whenever the CPU issues a write command. The next time the CPU needs the data, it retrieves the data from the memory buffer without accessing the SDRAM. Configuration options: [Disabled] [Enabled] Delayed Transaction [Disabled] When set to [Enabled], this feature frees the PCI bus when the CPU is accessing 8-bit ISA cards. This process normally consumes about 50-60 PCI Clocks without PCI delayed transaction. Set this field to [Disabled] when using ISA cards that are not PCI 2.1 compliant. Configuration options: [Enabled] [Disabled] PCI to DRAM Prefetch [Always prefetc] Configuration options: [Always Prefetch] [Prefetch disabled] [Prefetch only enhance command] AGP Capability [4X Mode] This motherboard supports the AGP 4x interface that transfers video data at 1066MB/s. AGP 4x is backward-compatible, so you may leave the default [4X Mode] on even if you are using an AGP 1x or 2x video card. When set to [1X Mode], the AGP interface only provides a peak data throughput of 266MB/s even if you are using an AGP 2x/4x card. When set to [2X Mode], the AGP interface only provides a peak data throughput of 533MB/s even if you are using an AGP 4x card. Configuration options: [1X Mode] [2X Mode] [4X Mode] AGP Fast Write [Disabled] Configuration options: [Disabled] [Enabled] 4. BIOS SETUPChip Configuration ASUS A7V266-EX User’s Manual 61 4. BIOS SETUP 4. BIOS SETUPChip Configuration AGP Drive Strength [Auto] Configuration options: [Auto] [Manual] Graphics Aperture Size [32MB] This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB] [256MB] Video Memory Cache Mode [UC] USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must set this to UC (uncacheable) if your display card does not support this feature, otherwise the system may not boot. Configuration options: [UC] [USWC] Onboard PCI IDE Enable [Both] This field allows enable either the primary IDE channel or secondary IDE channel, or both. You can also set both channels to [Disabled]. Configuration options: [Both] [Primary] [Secondary] [Disabled] Onboard ACR LAN Enable [Auto Detect] This field enables or disable the onboard Advanced Communication Riser (ACR) and Local Area Network (LAN) controller built-in the VT8233 chipset. Configuration options: [Enabled] [Auto Detect] [Disabled] Onboard PCI Audio Enable [Enabled] This field enables PCI audio. Configuration options: [Enabled] [Disabled] Memory Hole At 15M-16M [Disabled] This field reserves an address space for ISA expansion cards. Setting the address space to a particular setting makes that memory space unavailable to other system components. Expansion cards can only access memory up to 16MB. Configuration options: [Disabled] [Enabled] 62 ASUS A7V266-EX User’s...