# ARCH probing

The unit at [lib/arch.fs] provides convenient words around the ARCH constant
described in [doc/kernel].

Constants:

FAMILY_none   $00
FAMILY_x86    $10
FAMILY_arm    $20

Words:

instrfamily? ( id -- f )
  Takes a FAMILY_* constant and yields whether we're running on that.

instrset ( -- n )
  Yields the "Instruction set" part of ARCH.

machineoptions ( -- n )
  Yields the "Machine option" part, shifted right, of ARCH.
