User manual CHAINTECH ES-676M

[. . . ] Declaration of Conformity ES-676M Intel Socket 478 VIA P4M266A + VT8235 u-ATX Motherboard According to 47 CFR, Parts 2 and 15 of the FCC Rules The following designated product: EQUIPMENT: MAINBOARD MODEL NO. : ES-676M is a Class B digital device that complies with 47 CFR Parts 2 and 15 of the FCC Rules. Operation is subject to the following two conditions: User's Guide 1. This device must accept any interference received, including interference that may cause undesired operation. This declaration is given to the manufacturer: CHAINTECH-EXCEL COMPUTER INC. [. . . ] DRAM Timing Security Option The Supervisor and/or User Password functions shown in Figure 3-1 must be set to take advantage of this function. When the Security Option is set to System, a password must be entered to boot the system or enter the BIOS setup program. When the Security Option is set to Setup, a password is required to enter the BIOS setup program. APIC Mode This item can enable or disable the APIC (Advanced Programmable Interrupt Controller). Due to compliance to PC2001 design guide, the system is able to run in APIC mode. Enabling APIC mode will expand available IRQs resources for the system. MPS Version Control For OS This item allows you to select which MPS (Multi-Processor Specification) version to be used for the operating system. You need to select the MPS version which is supported by your operating system. To find out which version to use, consult the vendor of your operating system. OS Select For DRAM >64MB If your system's DRAM is larger than 64MB and you are running OS/2, select OS/2 as the item value. Otherwise, set the item value to Non-OS/2 for all other operating systems. Video BIOS Shadow Enabling this function will allow the Graphic card's BIOS setting to be imaged onto the RAM for a better performance. Show POST CODE Enabling this function can show POST error code on the screen before proceeding to operating system. 3-3 Advanced Chipset Features By choosing the [Advanced Chipset Features] option from the CMOS Setup Utility menu (Figure 3-1), the screen below is displayed. This sample screen contains the manufacturer's default values for the motherboard. All of the above settings have been determined by the motherboard manufacturer and should not be changed unless you are absolutely sure of what you are doing. Explanation of the DRAM timing and chipset features setup is lengthy, highly technical and beyond the scope of this manual. Below are some abbreviated descriptions of the functions in this setup menu. 9 The function allows you to enable or disable the DRAM timing by SPD. When set to Manual, you can select the SDRAM CAS Latency, Bank Interleave, Precharge to Active(Trp), Active to Precharge(Tras), Active to CMD(Trcd), DRAM Command Rate, DRAM Burst Len, and CPU read DRAM Mode configuration. It is recommended to keep the default setting for stable system operation. AGP Aperture Size This function determines the amount of system memory that is given to the AGP card. This is a dynamic memory allotment in that the AGP card will only use the amount of memory that it needs. The remaining memory not in use will be available for the system to use. [. . . ] The first two are located under the Security Option function in BIOS Features Setup Menu (Figure 3-1). When the Security Option function is set to Setup, a password is required to enter BIOS and change BIOS settings. When the Security Option function is set to System, a password is required to enter both BIOS and the computer's operating system (for example Windows 98) found on the boot drive. The third and fourth variables are user password and supervisor password selected in BIOS (Figure 3-1). [. . . ]