User manual TYAN TAHOE AT

[. . . ] Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 3 Software Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 4 Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Close J36 by covering the pins of J36 with a jumper cap to short the circuit between the pins. By following the above procedures, the password and CMOS will be reset to BIOS defaults. S1680S-001-02 http://www. tyan. com 14 2. 6 DRAM Installation The S1680S uses a 64-bit data path from memory to the CPU which will accommodate up to 1GB of RAM. The motherboard supports FPM (Fast Page Mode), EDO (Extended Data Out), ECC (Error Correcting Code), and Parity 72-pin SIMMs. The following table shows some of the available memory configurations. Bank 0 4MBx2 8MBx2 4MBx2 8MBx2 4MBx2 16MBx2 16MBx2 32MBx2 64MBx2 16MBx2 32MBx2 32MBx2 32MBx2 64MBx2 128MBx2 64MBx2 64MBx2 128MBx2 128MBx2 128MBx2 128MBx2 128MBx2 128MBx2 128MBx2 Bank 1 none none 4MBx2 8MBx2 4MBx2 none 16MBx2 none none 16MBx2 32MBx2 32MBx2 32MBx2 64MBx2 none 64MBx2 64MBx2 128MBx2 64MBx2 128MBx2 128MBx2 128MBx2 128MBx2 128MBx2 Bank 2 none none none none 4MBx2 none none none none 16MBx2 none 32MBx2 32MBx2 none none 64MBx2 64MBx2 none 64MBx2 128MBx2 64MBx2 128MBx2 128MBx2 128MBx2 Bank 3 T tal o none 8MB none 16MB none 16MB none 32MB 4MBx2 32MB none 32MB none 64MB none 64MB none 128MB 16MBx2 128MB none 128MB none 192MB 32MBx2 256MB none 256MB none 256MB none 384MB 64MBx2 512MB none 512MB 64MBx2 640MB none 768MB 64MBx2 768MB 32MBx2 832MB 64MBx2 896MB 128MBx2 1GB S1680S-001-02 15 2. 7 Level 2 Cache Memory/SRAM Memory The S1680S's L2 Cache Memory is built into the Intel Pentium II CPU. There are no L2 Cache Memory slots or SRAM slots on the board. 2. 8 VRM (V oltage Regulator Module) The CPU will program the VRM for the correct voltage needed. It also has a built-in Switching power supply. 2. 9 Peripheral Device Installation Install the motherboard after you have checked all of the jumper settings. Also be sure to check all connectors thoroughly and read the technical manuals that come with your peripheral cards before you install your expansion cards. If a PCI-Bus interface card is to be installed in the system, any one of the four PCI-Bus slots will support either a Master or a Slave device. 2. 10 Connecting the power supply The system is configured for a standard AT power supply. The AT connectors can only be plugged in one way and should install easily. S1680S-001-02 http://www. tyan. com 16 Chapter 3: CPU Installation and Removal Pentium II (233 through 300 MHz) and Pentium Pro Processors (150 through 200 MHz) can be used on the S1680S board. (Please refer to section 2. 3 for the correct CPU jumper settings for your board. ) The S1680S board provides a slot for the Pentium II Processor. The CPU is a sensitive electronic component which can be easily damaged by static electricity. Do not touch the CPU contacts with your fingers. 3. 1 Installation of the Pentium II Boxed (Active) Processor (Note: An Active Processor is equipped with a cooling fan. When installing an Active Processor, you need to connect its power cables to the cooling fan connectors located on the board. ) Installing the CPU Retention Module 1. Installation of a Pentium II Active Processor requires a CPU Retention Module, which is first secured onto the motherboard. To attach the Retention Module, place the motherboard on a flat surface. Then carefully line up the key notch on the Retention Module with the key pin on the Pentium II Slot. (The key pin on the Pentium II Slot indicates the correct orientation of the CPU. ) Pentium II Slot Connector & Key Pin 4. Drop the Retention Module down over the Pentium II Slot so that the Retention Module seats flat against the motherboard. Tighten the screws in a clockwise manner to secure the module to the board. (Warning -- Do not overtighten the screws as you may damage the module and/or the motherboard. ) S1680S-001-02 17 Installing the Pentium II Active CPU 5. When the Retention Module is securely installed, you are ready to plug the CPU into the Retention Module. Make sure that the CPU's Cooling Fan is turned away from the I/O connectors before you plug the CPU into the CPU module. Retention Module 6. [. . . ] If it is bad, replace it with a good one. (To determine if the RTC is bad, do the following: a. Turn on the system and set the system clock. If the above steps do not fix the problem, contact your vendor. 4. 2 T echnical Support Procedures Be sure to go through the "Troubleshooting Procedures" section in this chapter, and visit our Web site before calling Technical Support. (Tyan's Web site address is: http://www. tyan. com. ) Before you call, have the following information ready: 1. Product Configurations 4. 3 Returning Merchandise for Service During the warranty period, contact your Distributor or Dealer FIRST for any product problems. [. . . ]