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Installation
Section 3-2
System Memory Configuration
Memory Layout
The EP-3VBA supports (3) 168-pin DIMMs (Dual In-line Memory Module).
The DIMMs can be either EDO (Enhanced Data Out) or SDRAM
(Synchronized DRAM).
•
DIMM SDRAM may be 83MHz (12ns), 100MHz (10ns) or
125MHz (8ns) bus speed.
•
If you use both 50ns and 60ns memory you must configure
your BIOS to read 60ns.
•
When using Synchronous DRAM we recommend using the
4 clock variety over the 2 clock.
Figure 2 and Table 1 show several possible memory configurations using both
SIMM and DIMM.
T
t o
l a
M
e
m
o
y r
E
=
2
6 5
M
B
8
M
a
i x
m
u
m
1
E
=
5
2 1
M
B
8
M
a
i x
m
u
m
1
E
=
7
8 6
M
B
8
M
a
i x
m
u
m
1
* SDRAM only supports 8, 16, 32, 64, 128, 256MB DIMM modules.
Page 3-4
DIMM 1
DIMM 2
DIMM 3
D
I
M
M
1
B (
a
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D
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, B
6 1
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2 3
M
, B
4 6
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8 2
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2 ,
6 5
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B
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1
D
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S /
D
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6 1
M
, B
2 3
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4 6
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2 ,
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1
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6 1
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2 3
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4 6
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1
D
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B (
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N
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D
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R
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8
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6 1
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, B
4 6
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, B
1
8 2
M
B
2 ,
6 5
M
B
X
1
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D
O
S /
D
R
A
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8
M
, B
6 1
M
, B
2 3
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4 6
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, B
1
8 2
M
B
2 ,
6 5
M
B
X
1
Table 1
EP-3VBA
B a n k 0
-S y n c h ro n o u s
B a n k 1
-E D O
B a n k 2
D
I
M
M
3
B (
a
n
k
) 2
N
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e n
N
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E
D
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S /
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A
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*
8
M
, B
6 1
M
, B
2 3
M
, B
4 6
M
, B
1
8 2
M
B
2 ,
6 5
M
B
X
1
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