* Address = :ref:`vaddr<amdgpu_synid9_vaddr_flat_global>` + :ref:`offset13s<amdgpu_synid_flat_offset13s>`. :ref:`vaddr<amdgpu_synid9_vaddr_flat_global>` is a 64-bit address. This mode is indicated by :ref:`saddr<amdgpu_synid9_saddr_flat_global>` set to :ref:`off<amdgpu_synid_off>`.
* Address = :ref:`saddr<amdgpu_synid9_saddr_flat_global>` + :ref:`vaddr<amdgpu_synid9_vaddr_flat_global>` + :ref:`offset13s<amdgpu_synid_flat_offset13s>`. :ref:`vaddr<amdgpu_synid9_vaddr_flat_global>` is a 32-bit offset. This mode is used when :ref:`saddr<amdgpu_synid9_saddr_flat_global>` is not :ref:`off<amdgpu_synid_off>`.