Design Recipes for FPGAs: Using Verilog and VHDL

Part 5

Fundamental Techniques

In this fifth part of the book, the aim is to present a collection of

standard functions in VHDL that are quite basic. This is directed

to those who perhaps are new to VHDL and need even simple

functions to be provided for them in VHDL. This part of the book

describes standard techniques for implementing registers, coun-

ters, decoders, multiplexers, latches and flip flops, and also covers

background information such as fixed point arithmetic operations,

binary multiplication, finite state machines, serial to parallel and

parallel to serial conversion and ALU functions.

The VHDL provided is ‘examplar’ in that clarity and simplicity

were preferred over efficiency, speed or area and as such a practi-

cal implementation will ...