Specification Naming Convention
For many years, PICMG used a numerical naming convention with specification being referred to as “PICMG X.YY”. Where X was used denoted differing form factors (“1” for slot card based single board computers, “2” for CompactPCI and “3” for AdvancedTCA) while YY was used to indicate incremental changes, option definitions or slight variation of a specification form its core specification. In 2003, PICMG added an acronym-based naming convention for its specifications to yield better results from internet search engines. Specifications are now often named ABCD.X where ABCD is an acronym of the specification. In this naming convention, base or main specification are denote with X=0 (i.e. ABCD.0) and PICMG subsidiary specifications are denoted X>0. PICMG subsidiary specifications represent how various options or variations of a based specification should be handled.
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