Instruction manual

Page 6 Chapter Three
Eagle 250 Upgrade Instructions, Rev. A00
INSTALLING MEMORY
The Eagle 250 supports from 4MB to 256MB of main memory: either one or two memory SIMMs of
4MB, 8MB, 16MB, 32MB, 64MB, or 128MB. Use 60ns SIMMs only; 70ns SIMMs will not work.
Unlike the AM-6000 and AM-7000, SIMMs do not have to be installed in pairs: you can use either one
or two SIMMs; if you use two, they do not have to be of equal size. For example, you can install one
32MB SIMM and one 16MB SIMM for a total of 48MB of memory.
The memory SIMMs install in connectors J10 and J11. See Figure 4-1 for the location of these
connectors. If you’re installing only one SIMM, it goes in J10. If you’re installing two SIMMs of
unequal capacity, the larger one goes in J10.
To install memory expansion SIMMs on the AM-138-10 board, use this procedure:
Remember, don’t follow this procedure until you’re at the proper place in the installation process
for your upgrade.
1. Insert one SIMM (the larger if the SIMMs aren’t of equal capacity) in connector J10. Align pin-1
at the notched end of the SIMM module with pin-1 on the connector, as in Figure 3-2.
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-138-10 SIMM Module Installation