User`s guide

KA52/53/54 CPU Module Description
1.2 MS44 and MS44L Memory Modules
1.2 MS44 and MS44L Memory Modules
The MS44 and the MS44L memory modules provide memory expansion for the
KA52/53/54 CPU module. The KA52/53/54 CPU module supports one variant
of the MS44 memory option and one variant of the MS44L option as follows:
• The MS44L-BC (16M bytes), which contains four MS44L-AA (4M bytes)
memory modules
• The MS44-DC (64M bytes), which contains four MS44-CA (16M bytes)
memory modules
Note
Use only MS44 or MS44L memory modules qualified by Digital.
The rules for adding MS44 or MS44L memory options are as follows:
• You must install all four of the memory modules contained in a memory
option. This means that you can expand memory in 16M byte or 64M byte
increments only.
• You can install memory options only in a set of connectors that have
the same numeral in the connector label. The sets are identified by the
following labels:
– 0A, 0B, 0C, 0D
– 1E, 1F, 1G, 1H
Figure 1–4 shows the location of the basic memory (16M bytes or 64M
bytes) and the memory expansion connectors. Table 1–2 lists the memory
configurations.
KA52/53/54 CPU Module Description 1–9