American Megatrends Atlas PCI-II, User Manual

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Atlas PCI-II Motherboard User’s Guide 52
Chipset Setup
Cache Module Type This option specifies the type of cache module
installed on the motherboard. See pages 16 through
18 for additional information about installing the
cache module. Before selecting the cache module
type, disable the onboard SMT cache memory by
shorting Pins 2-3 of J30 on the motherboard.
The settings are None, Async, Burst, or Pipeline.
The Optimal default setting is Async . The Fail-Safe
default setting is None.
DRAM Speed for EDO If using EDO SIMMs for system memory,
s pecify the RAS access speed of the EDO SIMMs
installed in the motherboard. The settings are 60 ns
or 70 ns. The default is 70 ns.
Important
The DRAM Speed for EDO and DRAM Speed for Fast Page
Mode options are only present if you have installed one bank
of EDO SIMMs and one bank of fast page mode SIMMs. If
only EDO SIMMs or only fast page mode SIMMs are
installed in both memory banks, only the relevant option is
displayed in Chipset Setup.
DRAM Speed for Fast Page Mode If using Fast Page Mode SIMMs
for system memory, s pecify the RAS access speed
of the Fast Page Mode SIMMs installed in the
motherboard. The settings are
60 ns or 70 ns. The
default is 70 ns.
8 Bit I/O Recovery This option specifies the length of the delay that
is added to the CPU cycle between consecutive 8-
bit I/O operations. The length of the delay is related
to the CPU type and frequency. The settings are
8
BCLK, 5 BCLK, 4 BCLK, or 3 BCLK. The Optimal
default setting is 3 BCLK . The Fail-Safe default
setting is 8 BCLK.
Cont’d