What is the numbering scheme for the minor device numbers under IRIX 6 5?

Prior to the release of HP-UX version 11.11, HP used a decimal version numbering scheme with the first number giving the major release and the number following the decimal showing the minor release. With 11.11, HP made a marketing decision to name their releases 11i followed by a v(decimal-number) for the version. The i was intended to indicate the OS is internet-enabled, but the effective result was a dual version-numbering scheme. (The name change was apparently made to respect the World War I Armistice anniversary, which occurs on 11.11 in nations that use decimal dates.)