The presently claimed invention relates generally to digital watermarking and steganographic data hiding for video and images. The body portion may define an aperture configured for fluid flow through an interior of the body portion. An additive gas flow rate regulator configured to regulate a flow rate of an additive gas is provided on the additive gas flow path. The index compare is performed in parallel with a TLB lookup of the virtual page number of the load data, which produces a load physical page address.