Micronics 60/66MHz - Manual (Page 20)

3-3
Installing System Memory and Add-On Peripherals
System Memory
System memory devices, commonly known as SIMMs (Single Inline Memory
Modules), are necessary to operate the M5Pi system board. The M5Pi has
four SIMM sockets and can be upgraded to 128 Megabytes of RAM. This
section will explain the type of SIMMs supported, list the rules of adding
memory to the M5Pi, give some examples of common memory configurations,
and show how to physically install the new SIMMs.
SIMMs Supported
The M5Pi supports the following 72 pin, 60 or 70ns SIMMs:
4MB (1Mx36)
8MB (2Mx36)
16MB (4Mx36)
32MB (8Mx36)
Note:
For long term reliability, Micronics recommends using SIMMs with tin-plated
contacts. The use of gold-plated contacts may conflict with the tin alloy of the
SIMM socket.
Upgrading Rules
The following is a list of rules to follow when upgrading SIMMs. If you
follow these rules, your upgrade should be trouble-free:
m
Use 70ns or faster SIMMs. Anything slower will not keep up with
the Pentium processor.
m
Upgrade SIMMs two at a time. These SIMMs must be the same size
and preferably from the same manufacturer. To add 16MB of
memory to the system board, install two 8MB SIMMs into bank 0
and bank 1.
m
When installing SIMMs, start with ‘bank 0’ and work your way up
(0,1,2,3).