User manual

Computer Gateway User Manual 6-2 5/96
6.2.2
You can copy the schematic to an existing volume that is already listed in a Pathname
Catalog, or you can add its pathname to a Pathname Catalog and then do an Area Change at
a US to make it available. Detailed instructions for adding a schematic to a Pathname
Catalog are under subsection 29.2 in the Engineer's Reference Manual, in the
Implementation/Startup and Reconfiguration - 2 binder.
6.2.2 Database Memory Requirements
Database memory requirements are
ACIDP—143 words each (plus CDS requirements)
CRDP—36 words each
internal DDT—40 + (25*the number of items in table) words each
Custom Data Segments —three factors are involved:
• Control Structure: 80 words of control structure are added to each ACIDP or CRDP
with one or more CDS.
• Descriptor Segment: 13 + (22 times the number of parameters) words are required by
each CDS for its descriptor segment.
• Data space: CDS data use varies with the mix of parameter types.
Each Real parameter requires 2 words
Each ASCII parameter requires 21 words
Each Enumeration parameter requires 2 words
Each Self-defining enumeration requires 7 words
Each Boolean parameter requires 1 word
Process Units—300 words for each 150 points (or fraction of 150) in the same Unit.