Chapter 4: BIOS
4-13
into L1, L2, L3 cache inside the CPU to speed up CPU operations. Select Uncached
to disable this function. Select Write Through to allow data to be cached into the
buffer and written into the system memory at the same time. Select Write Protect to
prevent data from being written into the extended memory area above 1 MB. Select
Write Back to allow the CPU to write data back directly from the buffer without writ-
ing data to the System Memory for fast CPU data processing and operation. The
options are Uncached, Write Through, Write Protect, and
Write Back
.
PNP Configuration
Access the submenu to make changes to the following settings for PNP (Play &
Plug) devices.
PCI 32 Device Slot # 1, 2, 3, 4, and 6
Access the submenu for each of the settings above to make changes to the
following:
Option ROM Scan
When enabled, this setting will initialize the device expansion ROM. The options
are
Enabled
and Disabled.
Enable Master
This setting allows you to enable the selected device as the PCI bus master.
The options are
Enabled and
Disabled
.
Latency Timer
This setting allows you to set the clock rate for Bus Master. A high-priority, high-
throughout device may benefit from a greater clock rate. The options are
Default
,
0020h, 0040h, 0060h, 0080h, 00A0h, 00C0h, and 00E0h. For Unix, Novelle and
other Operating Systems, please select the option: other. If a drive fails after
the installation of a new software, you might want to change this setting and try
again. A different OS requires a different Bus Master clock rate
.
PCI-E x4 Slot 5
Access the submenu for each of the settings above to make changes to the
following:
Option ROM Scan
When enabled, this setting will initialize the device expansion ROM. The options
are
Enabled
and Disabled.
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