User manual TYAN TRINITY 400

[. . . ] Tyan S1854 Trinity 400 Motherboard User's Manual Revision 2. 02 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. Award is a trademark of Phoenix Technologies Ltd. Windows is a trademark of Microsoft Corporation. [. . . ] 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). We recommend that you normally disable quick POST. Better to find a problem during POST than lose data during your work. 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. It allows you to switch the A: and B: to make B: become A: . 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 Fast, the system chipset controls Gate A20. 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. Memory Parity/ECC Check Select Enabled or Disabled. 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. When Enabled, you can select a typematic rate and typematic delay. Typematic Rate (Chars/Sec) When the typematic rate setting is enabled, you can select a typematic rate (the rate at which character repeats when you hold down a key) of 6, 8, 10, 12, 15, 20, 24 or 30 characters per second. [. . . ] Install the CPU, place the two side braces at the ends of the CPU slot (see Figure F left). The screws on the motherboard should fit through the holes of the retention braces. Tighten and secure both braces using a screw driver. Next, carefully insert the CPU between the braces and onto the CPU slot (see Figure G below). [. . . ]