A secure computer architecture is provided. With this architecture, data is received, in a component of an integrated circuit chip implementing the secure computer architecture, for transmission across a data communication link. The data is converted, by the component, to one or more first fixed length frames. The one or more first fixed length frames are then transmitted, by the component, on the data communication link in a continuous stream of frames. The continuous stream of frames includes one or more second fixed length frames generated when no data is available for inclusion in the frames of the continuous stream.