User manual ABIT IS7 V101

[. . . ] IS7 Series (IS7-G, IS7, IS7-E, IS7-M) Socket 478 System Board User's Manual 4200-0375-02 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. [. . . ] The default setting "By SPD" configures these four items 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. CAS Latency Time: This item controls the latency between the DRAM read command and the time that the data becomes actually available. Act to Precharge Delay: This item controls the number of DRAM clocks used for the DRAM parameters. DRAM RAS# to CAS# Delay This item controls the latency between the DRAM active command and the read/write command. DRAM RAS# Precharge: This item controls the idle clocks after issuing a precharge command to the DRAM. System BIOS Cacheable: When set to [Enabled], accesses to the system BIOS ROM addressed at F0000H-FFFFFH are cached, provided that the cache controller is enabled. The larger the range of the Cache RAM, the higher the efficiency of the system will be. Video BIOS Cacheable: As with caching the system BIOS, enabling the Video BIOS cache will allow access to video BIOS addressed at C0000H to C7FFFH to be cached, if the cache controller is also enabled. The larger the range of the Cache RAM, the faster the video performance will be. Memory Hole At 15M-16M: When set to [Enabled], the memory address space at 15M-16M will be reserved for ISA expansion cards IS7 Series BIOS Setup 3-11 that specifically requires this setting. 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. Init Display First: This item selects to initialize AGP or PCI Slot first when the system boots. AGP Data Rate Capability: This item selects the data transfer rate of AGP device. On-Chip VGA: (For IS7-M only) This option enables or disables the on-chip VGA controller. On-Chip Frame Buffer Size: (For IS7-M only) This option selects the size of on-chip frame buffer. User's Manual 3-12 Chapter 3 3-5. Integrated Peripherals OnChip IDE Device: Click <Enter> key to enter its submenu: IDE Bus Master: This option enables or disables the IDE bus mastering capability under the DOS environment. 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. 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. [. . . ] 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 customer who may purchase more products and who can urge your friends to buy from him or her as well. They should know best what your system configuration is and your problem. If you feel that you need to contact ABIT directly you can send email to the ABIT technical support department. [. . . ]