June 2001
Intermediate to advanced
759 pages
20h 17m
English
Content preview from The Designer's Guide to VHDL, 2nd Edition
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9 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, and 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.
9.1 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
An alias declaration in this form simply defines an ...
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