User manual TYAN TOMAHAWK BX

[. . . ] Tyan S1856 Tomahawk BX/A+ Motherboard User's Manual Revision 1. 00 Copyright © Tyan Computer Corporation, 1999. No part of this manual may be reproduced or translated without prior written consent from Tyan Computer Corp. All registered and unregistered trademarks and company names contained in this manual are propery of their respective companies including, but not limited to the following. AMIBIOS is a trademark of American Megatrend Incorporated. Award is a trademark of Phoenix Technologies Ltd. [. . . ] PC `98 LED When enabled, the Power LED on the motherboard will be green when power is on, yellow when in sleep mode, and off when power is off. OnChip USB The chipset contains an integrated USB controller. Select Enabled if you have USB peripherals. Auto Detect DIMM/ PCI CLK Allows you to manually select DRAM wait states, or let wait states be auto detected via the specs programmed into the SPD EPROM chip on your memory modules. Spread Spectrum Modulated Reduces EMI from the CPU clock. CPU Host/PCI Clock Controls the clock speeds for the CPU and PCI bus. The maximum rated PCI bus speed is 33MHz. This feature allows overclocking the CPU, memory and PCI bus. Tyan does not recommend and is not responsible for functional problems associated with overclocking. If lockups or memory errors occur you may need to reduce the CPU Host/PCI Clock speeds. BIOS S1856 Tomahawk BX/A+ 47 Chapter 3 BIOS Configuration Power Management Setup Note: This chapter describes all fields offered by Award Software in this screen. Your system board designer may omit or modify some fields. ROM PCI/ISA BIOS (2A5LET5A) POWER MANAGEMENT SETUP AWARD SOFTWARE, INC. ACPI Function Power Management PM Control by APM Video Off Option Video Off Method MODEM Use IRQ Soft-Off by PWRBTN HDD Power Down Doze Mode Suspend Mode ** PM Events ** VGA LPT & COM HDD & FDD DMA/master Modem Ring Resume RTC Alarm Resume : Disabled : User Define : No : Suspend->Off : V/H SYNC+Blank :3 : Delay 4 sec. : Disabled : Disabled : Disabled : OFF : LPT/COM : ON : OFF : Disabled : Disabled Primary INTR IRQ3(COM2) IRQ4(COM1) IRQ5(LPT2) IRQ6(Floppy Disk) IRQ7(LPT1) IRQ8(RTC Alarm) IRQ9(IRQ2 Redir) IRQ10(Reserved) IRQ11(Reserved) IRQ12(PS/2 Mouse) IRQ13(Coprocessor) IRQ14(Hard Disk) IRQ15(Reserved) : ON : Primary : Primary : Primary : Primary : Primary : Disabled : Secondary : Secondary : Secondary : Primary : Disabled : Primary : Disabled Wake Up On LAN : Disabled ESC : Quit : Select Item F1 : Help PU/PD/+/- : Modify F5 : Old Values (Shift)F2 : Color F6 : Load BIOS Defaults F7 : Load Setup Defaults Power Management Setup - Default Settings Chart Settings Chart (Continued) Setting Option ACPI Function Pow er Management PMControl by APM Video Off Option Video Off Method MODEMUse IRQ Soft-Off by PWRBTN HDD Pow er Dow n Doze Mode Suspend Mode BIOS Default Enabled User Define Yes Suspend 3 Instant Off Disabled Disabled Disabled Setup Default Enabled User Define Yes Suspend 3 Delay 4 sec Disabled Disabled Disabled V/ H SYNC+Blank V/ H SYNC+Blank http://www. tyan. com 48 Setting Option VGA LPT & COM HDD & FDD DMA/master Modem Ring Resume RTC Alarm Resume Wake Up on LAN Primary INTR IRQ3 (COM2) IRQ4 (COM1) IRQ5 (LPT2) IRQ6 (Floppy Disk) IRQ7 (LPT1) IRQ8 (RTC Alarm) IRQ9 (IRQ2 Redir) IRQ10 (Reserved) IRQ11 (Reserved) IRQ12 (PS/2 Mouse) IRQ13 (Coprocessor) IRQ14 (Hard Disk) IRQ15 (Reserved) BIOS Default OFF LPT / COM ON OFF Disabled Disabled Disabled ON Primary Primary Primary Primary Primary Disabled Secondary Secondary Secondary Primary Disabled Primary Disabled Setup Default OFF LPT / COM ON OFF Disabled Disabled Disabled ON Primary Primary Primary Primary Primary Disabled Secondary Secondary Secondary Primary Primary Primary Disabled BIOS ACPI Function Enable or disable Advanced Configuration Power Interface. Power Management This option allows you to select the type (or degree) of power saving for Doze, Standby, and Suspend modes. See the section PM Timers for a brief description of each mode. This table describes each power management mode: Max saving User Define Min Saving Maximum power savings. Inactivity period is 1 minute in each mode. Select time- out periods in the PM Timers section, following. Inactivity period is 1 hour in each mode (except the hard drive). PM Control by APM If Advanced Power Management (APM) is installed on your system, selecting Yes gives better power savings. S1856 Tomahawk BX/A+ 49 Chapter 3 BIOS Configuration Video Off Option Selects the power-saving modes during which the monitor goes blank. Always On Suspend - - > Off Monitor remains on during power- saving modes. Monitor blanked when system enters Suspend mode. All Modes- - > Off Monitor blanked when system enters any power- saving mode. Video Off Method Determines the manner in which the monitor is blanked. The Blank Screen option will let the system BIOS blank the screen when disabling video. V/H sync+Blank will allow the system BIOS to turn off the V-SYNC and H-SYNC signals running from the VGA card to the monitor. V/H System turns off vertical and horizontal synchronization ports SYNC+Blank and writes blanks to the video buffer. Select this option if your monitor supports the Display Power Management Signaling (DPMS) standard of the Video Electronics Standards Association (VESA). [. . . ] SIMM bank/socket SIMM sockets are the physical slots into which you stick SIMM modules. A pair of SIMM sockets form a SIMM bank, and act as a unit. If only one socket is filled, the bank will not operate. In Sleep/Suspend mode, all devices except the CPU shut down. SRAM Static RAM, unlike DRAM, does not need to be refreshed in order to prevent data loss. [. . . ]