User manual TYAN S-1854 TRINITY 400

[. . . ] Trinity 400 Motherboard Users Manual Revision 2. 00 Tyan S1854 Copyright © Tyan Computer Corporation, 2000. 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 property of their respective companies including, but not limited to the following. Information contained in this publication has been carefully checked for accuracy and reliability. [. . . ] Your system board designer may omit or modify some fields. S1854 Trinity 400 41 Chapter 3 BIOS Configuration ROM PCI/ISA BIOS (TYAN1854) BIOS FEATURES SETUP AWARD SOFTWARE, INC. Virus Warning CPU Internal Cache External Cache CPU L2 Cache ECC Checking Quick Power On Self Test Boot Sequence Swap floppy Drive Boot Up Floppy Seek Boot Up NumLock Status IDE HDD Block Mode Gate A20 Option Typematic Rate Setting Typematic Rate (Chars/Sec) Typematic Delay (Msec) Security Option PCI/VGA Palette Snoop OS Select For DRAM > 64MB Report No FDD For WIN 95 : Disabled : Enabled : Enabled : Enabled : Enabled : A, C, SCSI : Disabled : Enabled : On : Disabled : Fast : Disabled :6 : 250 : Setup : Disabled : Non-OS2 : Yes Video BIOS Shadow : Enabled C8000-CBFFF Shadow : Disabled CC000-CFFFF Shadow : Disabled D0000-D3FFF Shadow : Disabled D4000-D7FFF Shadow : Disabled D8000-DBFFF Shadow : Disabled DC000-DFFFF Shadow : Disabled ESC : Quit : Select Item F1 : Help PU/PD/+/- : Modify F5 : Old Values (Shift)F2 : Color F6 : Load BIOS Defaults F7 : Load Setup Defaults BIOS Feature Setup - Default Settings Chart Setting Option Virus Warning CPU Internal Cache External Cache CPU L2 Cache ECC Checking Quick Pow er On Self Test Boot Sequence Sw ap Floppy Drive Boot Up Floppy Seek Boot Up NumLock Status IDE HDD Block Mode Gate A20 Option Typematic Rate Setting Typematic Rate (Chars/Sec) Typematic Delay (Msec) Security Option PCI / VGA Palette Snoop OS Select For DRAM > 64MB Report No FDD for WIin95 Video BIOS Shadow C8000-CBFFF Shadow CC000-CFFFF Shadow BIOS Default Disabled Enabled Enabled Enabled Enabled A, C, SCSI Disabled Enabled On Disabled Normal Disabled 6 250 Setup Disabled Non-OS2 No Enabled Disabled Disabled Setup Default Disabled Enabled Enabled Enabled Enabled A, C, SCSI Disabled Enabled On Enabled Fast Disabled 6 250 Setup Disabled Non-OS2 Yes Enabled Disabled Disabled http://www. tyan. com 42 Settings Chart (Continued) Setting Option D000-D3FFF Shadow D4000-D7FFF Shadow D8000-DBFFF Shadow DC000-DFFFF Shadow BIOS Default Disabled Disabled Disabled Disabled Setup Default Disabled Disabled Disabled Disabled Virus Warning When enabled, you receive a warning message if a program (specifically, a virus) attempts to write to the boot sector or the partition table of the hard disk drive. Keep in mind that this feature protects only the boot sector, not the entire hard drive. Note: Many disk diagnostic programs that access the boot sector table can trigger the virus warning message. If you plan to run such a program, we recommend that you first disable the virus warning. CPU Internal Cache/External Cache Cache memory is additional memory that is much faster than conventional DRAM (system memory). CPUs from 486-type on up contain internal cache memory, and most, but not all, modern PCs have additional (external) cache memory. When the CPU requests data, the system transfers the requested data from the main DRAM into cache memory, for even faster access by the CPU. The External Cache field may not appear if your system does not have external cache memory. CPU L2 Cache ECC Checking Enables Error Checking and correction (ECC) on the L2 cache onboard the CPU. Quick Power On Self Test Select Enabled to reduce the amount of time required to run the power-on selftest (POST). Boot Sequence The original IBM PCs loaded the operating system from drive A (floppy disk), so IBM PC-compatible systems are designed to search for an operating system first on drive A, and then on drive C (hard disk). However, modern computers usually load the operating system from the hard drive, and may even load it from a CD-ROM drive. The BIOS now offers a large number of boot devices and boot sequence options. S1854 Trinity 400 43 Chapter 3 BIOS Configuration Swap Floppy Drive This option allows you to swap the floppy drives if more than one is installed. Boot Up NumLock Status Toggle between On or Off to control the state of the NumLock key when the system boots. When toggled On, the numeric keypad generates numbers instead of controlling cursor operations. IDE HDD Block Mode Enables multi-sector transfers from the IDE drive in PIO mode. Gate A20 Option Gate A20 refers to the way the system addresses memory above 1 MB (extended memory). When set to Normal, a pin in the keyboard controller controls Gate A20. Setting Gate A20 to Fast improves system speed, particularly with OS/2 and Windows. If Enabled, allows memory checking when the BIOS detects the presence of ECC or Parity DRAM. Typematic Rate Setting When Disabled, the following two items (Typematic Rate and Typematic Delay) are irrelevant. Keystrokes repeat at a rate determined by the keyboard controller in your system. [. . . ] With the module out of the way, pull the CPU out of the slot This may require careful firm tugs to pull the CPU out of its slot. . http://www. tyan. com 76 Installing SECC2 CPUs - Option 2 Another method to secure an SECC2 CPU is by using the Universal Retention Module (also provided by Tyan). The universal retention module is designed to accommodate most versions of the Pentium Celeron CPUs. Included in this solution is an overhead clip to lock the CPU into its slot along with the side universal braces. See Figure E (above) for the universal retention Top Clip Side Braces Figure E module components. [. . . ]