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A
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4
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E
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A
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4
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R
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184-pin memory module that supports
RDRAM devices.
S
D
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o
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c
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SDRAM is one of the DRAM te
asynchronous and do not have clock signal). It is similar as
168-pin
DIMM
and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996
2
2
S
h
a
d
o
w
E
P
R
O
M
S
h
a
d
o
w
E
P
R
O
M
A memory space in Flash-ROM to simulate
battery-less design
S
S
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(
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S
S
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n
n
g
g
l
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I
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i
i
SIMM socket is only 72-pin, and is only
was called Single In Line. SIMM is
current motherboard design.
i
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y
M
o
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RDRAM
memory technology. A RIMM memory module may contain up to maximum of 16
o
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s
D
R
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M
)
o
u
s
D
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)
chnologies that allow DRAM to use the same clock as the CPU host bus
2
E
PROM operation, AOpen motherboard uses Shadow E
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m
m
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single side. The golden finger signals on each side of PCB are identical. That is why it
made by FPM or
EDO
l
e
)
l
e
)
PBSRAM
to use burst mode transfer. SDRAM comes in 64-bit
e
)
)
DRAM and supports 32-bit data. SIMM had been phased out on
123
O
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M
a
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O
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a
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u
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(EDO
and FPM are
2
PROM for jumper-less and
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