VHDL Tutorial

Peter J. Ashenden
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The purpose of this tutorial is to describe the modeling language VHDL. VHDL includes facilities for describing logical structure and function of digital systems at a number of levels of abstraction, from system level down to the gate level. It is intended, among other things, as a modeling language for specification and simulation. We can also use it for hardware synthesis if we restrict ourselves to a subset that can be automatically translated into hardware.