User manual ABIT BH7

[. . . ] BH7 Socket 478 System Board User's Manual 4200-0365-02 Rev. 1. 01 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. [. . . ] Video RAM Cacheable: When set to [Enabled], the video RAM will be cacheable and providing better video performance. If your graphics card does not support this function, set this item to Disabled. Memory Hole At 15M-16M: When set to [Enabled], the memory address space at 15M-16M will be reserved for ISA expansion cards that specifically requires this setting. This makes the memory from 15MB and up unavailable to the system. Delayed Transaction: When set to [Enabled], the PCI bus will be freed up when the CPU is accessing 8-bit ISA cards. This will allow PCI and ISA buses to be used more efficiently and prevents performance dropping on the PCI bus. This process normally consumes about 50-60 PCI clocks without PCI delayed transaction. Leave this item to its default [Disabled] setting when using ISA cards that are not PCI 2. 1 compliant. Delay Prior to Thermal: This item selects the delay time before thermal activation. AGP Aperture Size: 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. BH7 BIOS Setup 3-9 Init Display First: This item selects to initialize AGP or PCI Slot first when the system boots. [AGP]: When the system boots, it will first initialize AGP. [PCI Slot]: When the system boots, it will first initialize PCI. AGP Data Transfer Rate: This item allows you to select the data transfer rate of AGP device. A higher rate delivers faster and better graphics to your system. Make sure your graphics card supports the mode you select. Differential Current: This item selects the clock's internal reference current ratio. 3-5. Integrated Peripherals OnChip IDE Device(s): Click <Enter> key to enter its submenu: OnChip IDE-1 Controller: This item allows you to enable or disable the primary and secondary IDE controller. Select [Disabled] if you want to add a different hard drive controller. User's Manual 3-10 Chapter 3 Master/Slave Drive PIO Mode The PIO (Programmed Input/Output) mode allows the BIOS to tell the controller what it wants and then let the controller and the CPU perform the complete task, rather than having the BIOS issue a series of commands to affect a transfer to or from the disk drive. [Auto]: The BIOS will select the best available mode after checking your disk drive. [Mode 0-4]: You can select a mode that matches your disk drive's timing. Do not use the wrong setting or you will have drive errors. [. . . ] However, we will try to do our best to help every customer. Please also remember that for many of our technical support team English is a second language, you will have a better chance of getting a helpful answer if your question can be understood in the first place. Be sure to use very, simple, concise language that clearly states the problem, avoid rambling or flowery language and always list your system components. Here is the contact information for our branch offices: BH7 How to Get Technical Support J-3 North America and South America: ABIT Computer (U. S. A. ) Corporation 45531 Northport Loop West, Fremont, California 94538, U. S. A. [. . . ]