User manual ABIT LM6E

[. . . ] 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 property of their respective owners. [. . . ] You must check your VGA adapter manual to find out if any compatibility problems will occur. 8 Bit I/O Recovery Time: Nine options are available: NA $ 8 $ 1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7 $Back to NA. This option specifies the length of a delay inserted between consecutive 8 bit I/O operations. For an earlier 8 bit Add-on card, sometimes you need to adjust its recovery time to make it work normal. 3-20 Chapter 3 16 Bit I/O Recovery Time: Five options are available: NA $ 4 $ 1 $ 2 $ 3 $ Back to NA. This option specifies the length of a delay inserted between consecutive 16 bit I/O operations. For an earlier 16 bit Add-on card, sometimes you need to adjust its recovery time to make it work normal. Memory Hole At 15M-16M: This option is used to free up the 15M-16M memory block. Some special peripherals need to use a memory block located between 15M and 16M, and this memory block has a size of 1M. We recommend that you disable this option. Passive Release : Two options are available: Enabled and Disabled. Set the option to enabled or disabled passive release for the Intel PIIX4 chip (Intel PCI to ISA bridge). This function is used to meet the latency of the ISA bus master, if you have an ISA card compatibility problem, you can try to enable or disable this option for optimal result. Delayed Transaction: Two options are available: Enabled and Disabled. Set the option to enabled or disabled delayed transaction for the Intel PIIX4 chip. This function is used to meet the latency of PCI cycles to or from the ISA bus. If you have ISA card compatibility problem, you can try to enable or disable this option for optimal result. AGP Aperture Size (MB): Seven options are available: 4 $ 8 $ 16 $ 32 $ 64 $ 128 $ 256 $ Back to 4. 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. SDRAM RAS-to-CAS Delay: Two options are available: Slow or Fast. This option specifies the length of the inserted between the RAS and CAS signal of the DRAM system memory access cycle if SDRAM is installed. The setting will affects SDRAM performance, the default setting is Slow. Introduction of BIOS 3-21 SDRAM RAS Precharge Time: Two options are available: Slow or Fast. This option specifies the length of the RAS precharge part of the DRAM system memory access cycle when SDRAM system memory is installed. The default setting is Slow. SDRAM CAS latency Time: Two options are available: 2 and 3. You can select SDRAM CAS (Column Address Strobe) latency time according your SDRAM specification. Spread Spectrum Modulated: Four options are available: Disable$0. 50%(CNTR)$0. 5%(DOWN). For EMC (Electro-Magnetic Compatibility Test) testing may need to adjust these options for optimal result, we do not recommend you change the default, except for special reasons. Some values you select may cause system instability under some situations, please be careful. There are small differences in the chipset feature setup according to different motherboard models, but this has no influence upon performance. [. . . ] % If you still cannot boot up: Try installing another brand/model VGA card and see if the system will start. If it still does not start, note the VGA card model, motherboard model, Bios identification number, CPU on the technical support form (refer to main instructions), and describe the problem in the problem description space provided. % If you can boot up: Insert back the interface cards you have removed one by one and try to start the system each time you insert a card, until the system doesn't start anymore. Keep the VGA card and the interface card that causes the problem inserted on the motherboard, remove any other card or peripheral, and start again. [. . . ]