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The FreeBSD/ia64 project pages contain information about the FreeBSD port to Intel's IA-64 architecture; officially known as the Intel Itanium® Processor Family (IPF). As with the port itself, these pages are still mostly a work in progress.
          The ia64 port is still considered a tier 2 platform. This boils
          down to not being fully supported by our security officer, release
          engineers and toolchain maintainers. In practice however the
          distinction between a tier 1 platform (which is fully supported)
          and a tier 2 platform is not as strict as it seems. In almost all
          aspects the ia64 port is a tier 1 platform.
          
          From a developer point of view there's an advantage to have the ia64
          port be a tier 2 platform for a while longer. We still have a couple
          of ABI breaking changes in the pipeline and having to maintain
          backward compatibility this early in a ports life is less than
          ideal.