Memory Modules - DEC AlphaServer 1000A Owner's Manual

Memory Modules

The system unit supports 20 single in-line memory module (SIMM) connectors on
the system board. The SIMM connectors are grouped in four memory banks
consisting of five memory modules, including one for ECC (Error Correction Code).
Figure 5-4 shows the four memory banks and their memory module connectors.
Keep in mind the following rules when installing memory modules:
A memory option consists of five memory modules.
Bank 0 must contain a memory option (five modules: 0,1,2,3 plus one ECC
module)
All memory modules within a bank must be of the same capacity.
The system unit supports five sizes of memory options: 16, 32, 64, 128, and 256
megabytes. Using combinations of these five memory options, the system supports
between 16 megabytes to one gigabyte of memory.
Figure 5-4 Memory Banks and Connectors
Bank 3
Bank 2
Bank 1
Bank 0
ECC Banks
5-6 Installing and Removing Components
SIMM 1
SIMM 0
SIMM 1
SIMM 0
SIMM 1
SIMM 0
SIMM 1
SIMM 0
ECC SIMM for Bank 2
ECC SIMM for Bank 0
SIMM 3
SIMM 2
SIMM 3
SIMM 2
SIMM 3
SIMM 2
SIMM 3
SIMM 2
ECC SIMM for Bank 3
ECC SIMM for Bank 1
MA00327
AlphaServer 1000A Owner's Guide