Xycom XVME-678 Manual page 50

Chapter 3 - BIOS Setup Program
3.3.1.11 Video System
There are four video adapter choices:
• EGAIVGA (Enhanced Graphics Adapter, Video Graphics Array, or any special video adapter)
• 40 Color (Color Adapter, power-up in 40 column mode)
• 80 Color (Color Adapter, power-up in 80 column mode)
• Monochrome Adapter
This field should not be changed from its default-EGAIVGA. This allows video functions to be
controlled by the video BIOS rather than the system BIOS.
3.3.1.12 Power-Up Speed
This option determines the CPU speed at boot time. Choices are Fast (25 MHz) and Normal (10 MHz).
3.3.1.13 BIOS Shadow (System in RAM/ROM, Video in RAM/ROM)
The System BIOS and the VGA BIOS may be shadowed into DRAM to increase system performance.
Shadowing is the process of loading the BIOS from EPROM into DRAM after the power-up. Since the
DRAM bus width is 16 bits and the EPROM is only 8 bits, opcode fetches from the DRAM have a
significant increase in system performance.
3.3.1.14 Wait States
This sets the number of wait states for memory controlled by the chipset to 0 or 1.
3-6
NOTE
It is recommended that automatic configuration be used to select the COM
and LPT ports. Automatic configuration selects the first logical port address
that does not conflict with other communication ports in your system. If the
address is select manually, there is the possibility that there will be a
conflict with other system devices.