APAS Associate physical address space This instruction associates a physical address space with a memory-mapped location that is protected by a memory-side physical address space filter. For more information, see APAS, Associate PA space. SYS 1 1 0 1 0 1 0 1 0 0 0 0 1 1 1 0 0 1 1 1 0 0 0 0 0 0 0 APAS <Xt> SYS #6, C7, C0, #0, <Xt> Unconditionally <Xt> Is the 64-bit name of the general-purpose source register, encoded in the "Rt" field. 2026-03-26 20:27:25 2026-03_rel