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Chapter Three
Eagle 450 Upgrade Instructions, Rev. A00
INSTALLING THE EXTERNAL CACHE SIMM MODULE
The external cache SIMM must only be installed in the J12 slot, labeled CACHE SIMM. Never
install memory expansion SIMMs in J12, or the cache SIMM at any other location. See Figure 4-
1 for the location of J12.
To install the 64KB external cache SIMM (PDB-00701-00) on the AM-138 board:
3.
Align pin-1 on the external cache SIMM module with pin-1 on connector at J12. Pin-1 on the
SIMM module is on the notched end of the module (see Figure 3-2 below).
4.
Insert the cache SIMM module into the J12 connector at a slight angle.
5.
Rotate into the upright position.
RETAINER
CLIP
RETAINER
CLIP
MAKE SURE THIS CURVE
IN THE SIMM CARD ALIGNS
WITH PIN-1 IN THE SIMM
CONNECTOR.
PIN-1 INDICATOR
SIMM
CONNECTOR
SIMM (SINGLE INLINE
MEMORY MODULE)
Figure 3-2: AM-138 SIMM Module Installation
The cache SIMM will engage the metal retainer clips and click into position, locking in place. When
properly installed, the components on the cache SIMM module will be facing away from the other
memory SIMMs.
To enable the cache, make sure the jumper at location JP12 is installed. This is the factory default.
