DPI is the standard used to measure the mouse sensitivity, expressed as the number of DPIs (dots per linear inch) that a device can detect. By changing the DPI, you can instantly adjust pointer speed for precision tasks, such as in-game targeting or photo editing.

If an imported task or function accesses SystemVerilog data (other than the arguments passed to the function) by PLI/VPI or other means, such a function is called context function. A context function must identify itself in the import declaration. This is required in order to optimize the code.

The SystemVerilog Direct Programming Interface (DPI) is basically an interface between SystemVerilog and a foreign programming language, in particular the C language. It allows the designer to easily call C functions from SystemVerilog and to export SystemVerilog functions, so that they can be called from C.

SystemVerilog DPI (Direct Programming Interface) is an interface which can be used to interface SystemVerilog with foreign languages. These foreign languages can be C, C++, SystemC as well as others. DPIs consist of two layers: a SystemVerilog layer and a foreign language layer.