In one aspect the invention includes a method of protecting aluminum within an aluminum-comprising layer from electrochemical degradation during semiconductor processing comprising, providing a material within the layer having a lower reduction potential than aluminum. In one embodiment, a process of frame alignment searches a predefined bit pattern within a first multi-frame structure and provides an assumed frame boundary after identifying the predefined bit pattern in the first multi-frame structure. The touch application is to execute responsive to an update to a doorbell location in a system memory coupled to the processor, where the doorbell location is written responsive to a user input to the touch input device.