User manual TYAN TAHOE PLUS ATX

[. . . ] Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 2 Hardware Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 3 Software Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 4 Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 6 CPU types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Depending on the type of EPROM used, some boards will have J56 on pins 2-3(12V). (Refer to Page 13 for more information. ) ***************************************************** W arning!!*Do not change J56--(It has been pre-configured at the factory. ) 2. 5. 7 Hardware CMOS & Password Reset (J44) If you are locked out of your system because you have forgotten your password, or you have set the CMOS incorrectly, follow the instructions below. a. Short J44 by covering Pin 1 and Pin 2 of J44 with a jumper cap and short the circuit between these two pins. By following the above procedures, the password and CMOS will be reset to BIOS defaults. S1686S/D-001-02 15 2. 6 DRAM Installation The S1686S/D uses a 64-bit data path from memory to the CPU which will accommodate up to 1024MB of RAM. The motherboard supports FPM (Fast Page Mode), EDO (Extended Data Out), ECC (Error Correcting Code) or 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 Bank 1 Bank 2 Bank 3 none none 4MBx2 8MBx2 4MBx2 none 16MBx2 none none 16MBx2 32MBx2 32MBx2 32MBx2 64MBx2 none 64MBx2 64MBx2 128MBx2 none none none none 4MBx2 none none none none 16MBx2 none 32MBx2 32MBx2 none none 64MBx2 64MBx2 none none none none none 4MBx2 none none none none 16MBx2 none none 32MBx2 none none none 64MBx2 none Total 8MB 16MB 16MB 32MB 32MB 32MB 64MB 64MB 128MB 128MB 128MB 192MB 256MB 256MB 256MB 384MB 512MB 512MB S1686S/D-001-02 http://www. tyan. com 16 2. 7 Level 2 Cache Memory/SRAM Memory The S1686S/D's L2 Cache Memory is built into the Intel Pentium II CPU. 2. 8 VRM (V oltage Regulator Module) The CPU will program the VRM for the correct voltage needed. Switching power supply circuitry has been designed into the motherboard as well. 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 add-on peripheral cards. If a PCI-Bus interface card is to be installed in the system, any one of the five PCI-Bus slots will support either a Master or a Slave device. 2. 10 Connecting the Power Supply and On/Off Switch The system is configured for a standard ATX power supply. The ATX connectors can only be plugged in one way and should install easily. S1686S/D-001-02 17 Chapter 3: CPU Installation and Removal Pentium II (233 through 300MHz) and Pentium Pro Processors (150 through 200 MHz) can be used on the S1686S/D. Although the S1686D motherboard is designed as a dual CPU system, it will also function with a single CPU. The S1686S/D board provides one or two slots for Pentium II Processors-(Primary and Secondary Slots - (2nd only on S1686D)). If only one CPU is used, the CPU should be plugged into the Primary Slot. However, when two CPUs are used (S1686D), these CPUs should be of the same speed and type. Caution!!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 Pentium II Boxed (Active) Processors (Note: Active Processors are equipped with cooling fans. When installing an Active CPU, you also need to connect the cooling fan cable to its connector. ) Installing CPU Retention Modules 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. [. . . ] To enhance the performance of your computer system, Tyan has incorporated National Semiconductor's LM78 Microprocessor System Hardware Monitor and LANDesk Client Manager (LDCM) into the S1686D board design. The LM78 is an Integrated Data Acquisition system, designed to monitor power supply voltages, temperatures, and fan speeds. To achieve this purpose, the LM78, a hardware monitor component, has an on-chip temperature sensor, 5 positive analog inputs, two inverting inputs and an 8-bit ADC. A 32-byte auto-increment RAM is provided for POST (Power On Self Test) code storage. [. . . ]