The protocol table files used by a particular instance of the x-kernel can be specified in either the graph.comp file (Section 12.2), or in a ROM file (see Section 12.4). The ROM file format is:
prottbl FILENAME1
prottbl FILENAME2
...
In both cases, the named protocol tables are loaded at runtime.
By default, the protocol table allows multiple upper protocols to use the same protocol number relative to a single lower protocol. To restrict this behavior, so that each upper protocol must have a unique relative protocol number, the unique_hlps ROM option may be used.
prottbl unique_hlps on