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PCI/I-486SP3G
User's Manual
CPU Type Selectors:
JP34
- JP36,
JP38
These
jumpers indicate the type of CPU
installed.
Note that there is more than
one kind of OverOrive Processor (OOP). The jumpers will be
set
for the CPU
currently
installed on the ma
inboard.
If you install
a
CPU upgrade. make sure
to
use
the setting
for
the
new CPU as noted here
.
CPU Type
JP34
JP35
JP36
JP38
- /
486DX/DX2/DX4
487SX/ODP*
2&3
1&2
2&3
Open
486SX/SX2
1&2
1&2
2&3
Open
P24D
2&3
2&3
1 &2,4&5
Short
P24T
(Pentium
ODP*)
2&3
2&3
1 &2.4&5 Open
*ODP
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OverOrive Processor
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Technical Summary
~
Intel DX4/Cyrix DX2-V Voltage Selection: JP40
·
This jumper
selects
the
CPU
voltage
for
these two CPUs.
The
Intel CPU uses
3.45
volts
and the
Cyrix CPU uses 3.6 volts.
so
you must make
sure
that these jumpers
are set
correctly.
The
default setting
is
for the
Intel CPU.
so
you
do
not need
to
change the setting
if you do not
install a
Cyrix DX2-V.
Clock
Speed
JP40
Intel DX4
(default)
2&3
Cyrix DX2-V
1 &2
~1
~1
JP40
JP40
Intel DX4, 3.45-volt
Cyrix DX2-V, 3.6-volt
CPU Options
•Any
Intel 486
CPU.
• SL CPUs must
be Intel.
• Non-SL 486-compatible CPUs from other
vendors.
All CPU options must run at an external clock speed of either 25MHz or
33MHz
.
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4-6
4-7
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