tree ae234dcf052e5d8003df4e13e39b373f0333bd12
parent a7741727e25171acee151396691672dc88e6d85e
author John Kessenich <cepheus@frii.com> 1560320235 -0600
committer John Kessenich <cepheus@frii.com> 1560320235 -0600

Grammar: Add instruction-printing classes.

Each instruction belongs to exactly one instruction class.
@exclude will put in the headers, but not in the specification.
Reserved is for instructions that are both to be reserved in the
specification and not yet put into another printing class.
(It is okay to establish a printing class for a reserved instruction.)