Asus KN97 User Manual page 45

IV. BIOS SOFTWARE
Read-Around-Write (Enabled)
The default setting of Enabled will increase the execution efficiency of the proces-
sor. It allows the processor to execute read commands out of order if there is no
dependence between these read and other write commands.
16-bit I/O Recovery Time (1 BUSCLK)
Timing for 16-bit ISA cards (leave on default setting of 1 BUSCLK)
8-bit I/O Recovery Time (1 BUSCLK)
Timing for 8-bit ISA cards (leave on default setting of 1 BUSCLK)
Video Memory Cache Mode (UC)
USWC (uncacheable, speculative write combining) is a new cache technology for
the video memory of the processor. It can greatly improve the display speed by
caching the display data. You must leave this on the default setting of UC
(uncacheable) if your display card cannot support this feature or else your system
may not boot.
Memory Hole At 15M–16M (Disabled)
Enabling this feature reserves 15MB to 16MB memory address space to ISA expan-
sion cards that specifically require this setting. This makes the memory from 15MB
and up unavailable to the system. Expansion cards can only access memory up to
16MB. The default is Disabled.
[DRAM and ECC]
If all your DRAM modules have parity chips (e.g., 8 chips + 4 parity chips), they
are considered 36bits. This motherboard sums the memory per bank and therefore
two modules will give 72bits and the following will be displayed:
If your DRAM modules do not have parity chips (e.g. 8 chips), they are considered
32bits and the following will be displayed instead:
The default of Disabled for Data Integrity will not show memory errors on your
monitor. When using parity DRAM modules, you can select ECC (Error Checking
and Correcting) to correct 1 bit memory errors that may occur in the memory, other-
wise Parity is the default. (See section III for more information on DRAM memory
modules.)
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Onboard FDC Controller (Enabled)
When Enabled (default), this field allows you to connect your floppy disk drives to
the onboard floppy disk drive connector instead of a separate controller card. If you
want to use a different controller card to connect the floppy disk drives, set this field to
Disabled.
ASUS KN97 User's Manual 45