User`s manual

DA-681 Series Hardware User’s Manual BIOS Setup
Advanced Chipset Settings
System BIOS Cacheable
The BIOS ROM addresses F0000h to FFFFFh are cached, and the cache controller is enabled to
access the system. Enable it to speed up system performance.
Options: Enabled (default), Disabled
Video BIOS Cacheable
Enabling this feature allows the caching of the video BIOS and may improve performance. A
system error could occur if another program writes to this memory cache area.
Options: Enabled, Disabled (default)
Memory Hole at 15M-16M
When enabled, the system will reserve a system memory area for the ISA adapter ROM, and this
memory area will not be available for caching.
Options: Enabled, Disabled (default)
On-Chip Frame Buffer Size
This item determines the frame buffer size for the VGA function, and will share the system
memory.
Options: 1 MB, 8 MB (default)
DVMT Mode
Setting the DVMT operating mode. When set to “Fixed,” the graphics driver will reserve a fixed
portion of the system memory as graphics memory. When set to “DVMT,” the graphics driver will
dynamically allocate system memory as graphics memory, according to system and graphics
requirements. When set to “BOTH,” the graphics driver will allocate a fixed amount of memory as
dedicated graphics memory, as well as allow more system memory to be dynamically allocated
between the graphics processor and the operating system.
Options: FIXED, DVMT (default), BOTH
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