User manual TYAN TOMCAT I915

[. . . ] Tomcat i915 S5120 User's Manual Tomcat i915 /// Revision 1. 00 S5120 Copyright © TYAN Computer Corporation, 2004. 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 owners including, but not limited to the following. TYAN, Tomcat i915 and S5120 are trademarks of TYAN Computer Corporation. [. . . ] 3-29 http://www. tyan. com ® Tomcat i915 S5120 Chapter 3: BIOS Setup Shutdown Temperature The CPU Shutdown Temperature option allows for a user defined system shutdown temperature. If the CPU temperature exceeds the predefined shutdown threshold, the BIOS forces a system shutdown. · 60°C/140°F · 65°C/149°F · 70°C/158°F · Disabled CPU fan in suspend mode This setting determines whether to keep the CPU fan running when in suspend mode. · Turn-off · Stay-on 3. 8 Frequency/Voltage Control This section facilitates controlling the CPU clock and frequency ratio. CPU Clock Ratio The CPU clock ratio setting defines how fast the CPU clock runs relative to the bus speed. TYAN does not recommend changing this setting from the default setting. Enter any integer value between 8 and 50. Auto Detect DIMM / PCI Clk This BIOS feature determines whether the BIOS should actively reduce EMI (Electromagnetic Interference) and reduce power consumption by turning off unoccupied or inactive expansion slots. When enabled, the BIOS will monitor AGP, PCI and memory slots and turn off clock signals to all unoccupied and inactive slots. When disabled, the BIOS will not monitor AGP, PCI and memory slots. All clock signals will remain active even to unoccupied or inactive slots. It is recommended that you enable this feature to save power and reduce EMI. · Enabled · Disabled 3-30 http://www. tyan. com Tomcat i915 S5120 Chapter 3: BIOS Setup Spread Spectrum This BIOS feature allows you to reduce the EMI of your motherboard by modulating the signals it generates so that the spikes are reduced to flatter curves. It achieves this by varying the frequency slightly so that the signal does not use any particular frequency for more than a moment. The BIOS offers various levels of modulation. The greater the modulation, the greater the reduction of EMI. In most conditions, frequency modulation via this feature should not cause any problems. However, system stability may be slightly compromised in certain situations. For example, this BIOS feature may cause improper functioning of timing-critical devices like clock-sensitive SCSI devices. Spread Spectrum can also cause problems with over clocked systems, especially those that have been taken to extremes. Even a slight modulation of frequency may cause the processor or any other over clocked components of the system to fail, leading to very predictable consequences. Therefore, it is recommended that you disable this feature if you are over clocking your system. The risk of crashing your system is not worth the reduction in EMI. [. . . ] Clear screen & display summary table 7. Program P6 class write combining Update keyboard LED & typematic rate 1. Boot attempt (INT 19h) 83h: 84h: 85h: 87h: 89h: 8Bh: 8Dh: 8Fh: 93h: 94h: 95h: 96h: FFh: 6-11 http://www. tyan. com Tomcat i915 S5120 Technical Support Technical Support If a problem arises with your system, you should turn to your dealer for help first. Your system has most likely been configured by them, and they should have the best idea of what hardware and software your system contains. [. . . ]