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W6-LI System Board Manual
Chapter 3: Installing the W6-LI
19
System Memory
System memory is necessary to operate the W6-LI system
board. The W6-LI uses DIMMs, which provide a wider
data path than SIMMs, to carry more data.
The W6-LI has four 168-pin DIMM sockets for a maximum
of 512 Megabytes of RAM. Support is provided for EDO
DRAM memory and FPM DRAM memory. This chapter
will explain the type of DIMMs supported, list the rules for
adding memory to the W6-LI, give some examples of com-
mon memory configurations and show how to physically
install the new DIMMs.
DIMMs Supported
The W6-LI supports the following types of 60 or 70ns
DIMMs:
8MB (1Mx64/72)
16MB (2Mx64/72)
32MB (4Mx64/72)
64MB (8Mx64/72)*
128MB (16Mx64/72)*
*Subject to availability
Adding Memory
The following is a list of rules to follow when upgrading
DIMMs. If you follow these rules, your upgrade should be
trouble-free:
❏ Use 70ns or faster DIMMs.
❏ There are three (3) types of DIMM wiring configura-
tions: Non-parity - 64 bits wide, Parity and Error
Checking and Correction - 72-bits wide.
❏ All three types of DIMM configurations may be used
on the W6-LI, but not simultaneously.
For long
term
reliability,
Micronics
recom-
mends using
DIMMs with
gold-plated
contacts.
The use of
tin-plated
contacts
may conflict
with the gold
alloy on the
DIMM
socket.