O'Reilly logo

The Designer’s Guide to VHDL, Third Edition by Peter Ashenden

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 11. Aliases

Since the main purpose of a model written in VHDL is to describe a hardware design, it should be made as easy as possible to read and understand. In this chapter, we introduce aliases as a means of making a model clearer. As in everyday use, an alias is simply an alternate name for something. We see how we can use aliases in VHDL for both data objects and other kinds of items that do not represent data in a model.

Aliases for Data Objects

If we have a model that includes a data object, such as a constant, a variable, a signal or, as we see in a later chapter, a file, we can declare an alias for the object with an alias declaration. A simplified syntax rule for this is

   alias_declaration ⇐ alias identifier is name ;

An alias declaration ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required