User manual ABIT AT7 V10

[. . . ] Copyright and Warranty Notice The information in this document is subject to change without notice and does not represent a commitment on part of the vendor, who assumes no liability or responsibility for any errors that may appear in this manual. No warranty or representation, either expressed or implied, is made with respect to the quality, accuracy or fitness for any particular part of this document. In no event shall the manufacturer be liable for direct, indirect, special, incidental or consequential damages arising from any defect or error in this manual or product. Product names appearing in this manual are for identification purpose only and trademarks and product names or brand names appearing in this document are the property of their respective owners. [. . . ] AGP & P2P Bridge Control Screen AGP Aperture Size: Seven options are available: 256M ( 128M ( 64M ( 32M ( 16M ( 8M ( 4M (Back to 256M. This option specifies the amount of system memory that can be used by the AGP device. The aperture is a portion of the PCI memory address range dedicated for graphics memory address space. Host cycles that hit the aperture range are forwarded to the AGP without any translation. If you use the older AGP adapter that does not support AGP 4X or 2X mode, you need to set this item to 1X. Choosing Manual to key in an AGP Driving Value is described within the next section. It is recommended this field be set to Auto in order to avoid any errors in your system. " AGP Driving Value: This item allows you to adjust the AGP driving force. If your AGP adapter can support this function, then you can choose Enabled. AT7 Introducing the BIOS 3-19 AGP Read Synchronization: Two options are available: Disabled or Enabled. AGP Master 1 WS Write: Two options are available: Disabled or Enabled. When you set it to Enabled, two-wait states are used by the system, allowing for greater stability. When you set it to Enabled, two-wait states are used by the system, allowing for greater stability. CPU & PCI Bus Control: This item can let you sets several items concerning the PCI parameters. If you do not understand what each item does, please keep the default settings as well. CPU & PCI Bus Control Screen PCI Master Read Caching: Two options are available: Disabled or Enabled. PCI Master Bus Time-Out: Eight options are available: Disabled ( 001 ( 010 ( 011 ( 100 ( 101 ( 110 (111. It can set the time-out period, when after the set time-out period, PCI bus master will force into arbitration. User's Manual 3-20 Chapter 3 Master Priority Control: Four options are available: Disabled ( 01 ( 10 ( 11. When setting to "01", the CPU will always be granted access after the current bus master completes, no matter how many PCI masters are requesting. With setting to "10", if other PCI masters are requesting during the current PCI master grant, the highest priority master will get the bus after the current master completes. But the CPU will be guaranteed to get the bus after that master completes. With setting to "11", if other PCI masters are requesting, the highest priority will get the bus next, then the next highest priority will get the bus, then the CPU will get the bus. In other words, with the above settings, even if multiple PCI masters are continuously requesting the bus, the CPU is guaranteed to get access after every master grant (01), after every other master grant (10) or after every third master grant (11). PCI1 Master 0 WS Write: Two options are available: Enabled or Disabled. [. . . ] Your ABIT authorized distributor should be able to provide the fastest solution to your technical problem. We sell our products through distributors who sell to resellers and stores. Your reseller should be very familiar with your system configuration and should be able to solve your problem much more efficiently than we could. After all, your reseller regards you as an important User's Manual H-2 Appendix H customer who may purchase more products and who can urge your friends to buy from him or her as well. [. . . ]