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Chapter 4: BIOS
(or D0000h-D7FFFh) are copied (shadowed) from ROM to RAM for faster
execution. When set to Cached , the contents of the video ROM area
from C0000h-C7FFFh (or D0000h-D7FFFh) are copied from ROM to RAM,
and can be written to or read from cache memory. The default settings
are Cached for C000 and Disabled for D000.
Advanced Chipset Setup
USB Function
The settings for this option are Enabled or Disabled . Set this option to
Enabled to enable the USB (Universal Serial Bus) functions.
USB KB/Mouse Legacy Support
The settings for this option are Keyboard, Auto, Keyboard+Mouse or Dis-
abled . Set this option to Enabled to enable the USB keyboard and mouse.
CPU Latency Timer
See details on setup secreen. The settings for this option are Enabled and
Disabled .
Dram Page Closing Policy
See details on setup secreen. The settings for this option are Open and
Closed .
CD Hole
See details on setup secreen. The settings for this option are Enabled or
Disabled .
Memory Hole
Some ISA cards may require specific areas of memory in order to function. This can
be done by choosing the 15M -16M option as an area reserved for ISA use. The
Disabled option will not reserve a portion of memory for ISA cards.
DRAM Refresh
This option specifies the interval between Refresh signals to DRAM system
memory. The settings for this option are 15.6 us (micro-seconds), 7.8 us ,
FR128 CLKS or Reserved .
DRAM Cycle Time (SCLKS)
The settings for this option are Fast or Slow .
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