Digital Equipment DEC 3000 Series Service Information page 58

Memory Configuration,
Memory
Configuration
Rules
Identifying
Memory
Modules
2–34
Continued
When installing memory, follow these configuration rules:

Each memory bank must be filled in sets of eight memory
modules.

The eight memory modules in a bank must be of equal size.

The eight memory modules in a bank must be of the same
type. They must all be single- or double-sided.
If the rules are violated, the memory size displayed by a SHOW
MEMORY command will be that of lowest value memory module.
The following table lists the part numbers for 4 MB and 8 MB
memory modules.
Description
4 MB memory module
8 MB memory module
Part Number
54–21139–CA
54–21139–DA