Aaeon SBC-598 Manual page 51

consider making any changes would be if you discovered that data
was being lost while using your system.
Because of the complexity and technical nature of some of the
options, not all of the options are described here.
Auto Configuration
Set this item to Enabled to select predefined values for DRAM,
cache, timing, etc., according to your CPU type and system clock.
Thus, each item value may display differently depending on your
current system configuration.
System BIOS Cacheable
When enabled, access to the system BIOS ROM addressed at
F0000H-FFFFFH are cached if the cache controller is enabled.
Video BIOS Cacheable
As with caching the system BIOS above, enabling the video BIOS
cache will cause access to the video BIOS addressed at C0000H
to C7FFFH to be cached if the cache controller is also enabled.
Memory Hole At 15M-16M
In order to improve performance, certain space in memory can be
reserved for ISA cards, but must be mapped below 16 MB.
VGA Shared Memory Size
This sets the size of the 5598 model's onboard video display
memory, which is drawn from the total installed system memory.
The options range from 0.5MB to 4MB in 0.5MB intervals.
Remember, when you increase the amount of display memory you
are subtracting from the system memory.
VGA Memory Clock
You can choose different speeds for the VGA Memory Clock:
from 40 up to 70MHz in 1MHz increments.
Chapter 3 Award BIOS Setup 43