TYAN Trinity ATX Motherboard S1598 User Manual page 42

Chapter 3
BIOS Configuration
Security Option
If you have set a password, select whether the password is required every time
the System boots, or only when you enter Setup.
PCI/VGA Palette Snoop
Your BIOS Setup many not contain this field. If the field is present, leave at
Disabled.
OS Select for DRAM > 64MB
Select OS2 only if you are running OS/2 operating system with greater than 64
MB of RAM on your system.
Video BIOS Shadow
Software that resides in a read-only memory (ROM) chip on a device is called
firmware. The EliteBIOS permits shadowing of firmware such as the system
BIOS, video BIOS, and similar operating instructions that come with some
expansion peripherals, such as, for example, a SCSI adaptor.
Shadowing copies firmware from ROM into system RAM, where the CPU can
read it through the 16-bit or 32-bit DRAM bus. Firmware not shadowed must
be read by the system through the 8-bit X-bus. Shadowing improves the
performance of the system BIOS and similar ROM firmware for expansion
peripherals, but it also reduces the amount of high memory (640 KB to 1 MB)
available for loading device drivers, etc.
Enable shadowing into each section of memory separately. Many system
designers hardwire shadowing of the system BIOS and eliminate a System
BIOS Shadow option.
Video BIOS shadows into memory area C0000-C7FFF. The remaining areas
shown on the BIOS Features Setup screen may be occupied by other expan-
sion card firmware. If an expansion peripheral in your system contains ROM-
based firmware, you need to know the address range the ROM occupies to
shadow it into the correct area of RAM.
Cyrix 6x86 / MII CPU ID
Select Enabled to enable the Cyrix 6x86 / MII CPU support. The settings are
Enabled or Disabled.
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