Tyan Computer TYAN S1668 user manual Hardware Reset Switch Connector Installation

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3.7 Hardware Reset Switch Connector Installation

The RESET switch on your cases' display panel provides users with the HARDWARE RESET function which is the same as power on/off. The system will do a cold start after the RESET switch is pushed by the user. The RESET switch is a 2 pin connector and should be installed on jumper J45.

3.8 Flash EEPROM-Jumper J32

The S1668 uses flash memory to store BIOS data. It can be updated as new versions of the BIOS becomes available. The flash utility will guide you through the process step by step. If your system is functioning properly, you may want to forego updating your BIOS in the event the new one causes problems with your existing hardware and software.

J32 determines which type of EPROM is used. This jumper has been set to match the on board BIOS chip. The factory default for the S1668 is on pins 1-2.

Refer to chapter 6 for Flash EEPROM upgrade procedures.

3.9 Hardware CMOS & Password Reset

(The following steps are valid provided the board has a DS12887A RTC)

If you have been locked out of your system because you forgot your pass- word or set the CMOS incorrectly, follow the instructions below.

a. Power off the system

b. Short jumper J41.

c. Wait for 5 seconds then remove the jumper from J41.

d.Then power on the system again.

By doing the above procedures, your password will be erased and the CMOS will be reset to the BIOS defaults.

S1668-ATX-001 http://www.tyan.com

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Contents Tyan S1668 Dual Pentium Pro ATX 440FX PCI-ISA System Board Table Of Contents Introduction Hardware Specifications/Features Software Specifications EnvironmentBoard Installation On Board Resource Setting .1 S1668 ATX Board Layout VRM1Jumper Settings CPU Speed J27, J21, J22, J23, and J24 Cmos Resest/Password Reset J41Default offDram Voltage J2, J3, J14, J15, J4, J5, J16 and J17Default CPU Clock Multiplier J21, J22, J23 and J24Speaker Connector J43 Keylock Connector J44 Turbo Switch J47 Non-Turbo Mode Not SupportedSelection J28 & J29 Reset Connector J45 Turbo LED Connector J42Flash Eeprom J32Default InfraRed Interface Con4 and Con5Soft Power On Switch J1 CPU FAN Power J49 and J50 Speaker Connector InstallationTurbo Switch Turbo LED Connector InstallationHardware Reset Switch Connector Installation Refer to for Flash Eeprom upgrade proceduresDram Installation Voltage ID for Older Pentium Pro CPUs J10 and J20Memory Table Bank0 Bank1 Bank2 Bank3 TotalCPU Installation VRM Installation Peripheral Device InstallationConnecting the Power Supply & On/Off Switch Bios Configuration Entering SetupControl Keys Setup Page menu/Option Page Setup Menu Getting Help Main MenuStandard Cmos setup Bios features setupChipset features setup Power Management setupStandard Cmos Setup Menu DateTime Primary/Secondary Drive type Drive a type/Drive B typeVideo Halt OnMemory Expanded Memory Other MemoryBoot Sequence Swap Floppy Drive Default value is DisabledVirus warning CPU Internal Cache/External CacheBoot Up Floppy Seek Boot Up NumLock Status Default value is OnChipset Features Setup Power Management ROM ISA Bios Power Management Setup Award SOFTWARE, INCDoze Mode Standby ModePower Down Activities PCI Slot Configuration Resources Controlled By IRQ n assigned toLegacy ISA PCI/ISA PnPIntegrated Peripherals Load Setup Defaults ROM ISA Bios Cmos Setup Utility Award SOFTWARE, INC IDE HDD Auto Detection Flash Writer Utility Page Flash Memory Writer Utility Screen Award Flash Memory WriterTimer & DMA Channel MAP System Resources