VHDL

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On this page you will find a series of tutorials introducing FPGA design with VHDL. These tutorials take you through all the steps required to start using VHDL and are aimed at total beginners.

If you haven’t already done so, it is recommended that you read the posts which introduce the FPGA development process first. These give an overview of all the stages required to design an FPGA. This information will give you some important basic background knowledge which will help with these tutorials.

A picture of the underside of a CPU
In the first post in this series we talk about how VHDL designs are structured and how this relates to the hardware being described.
A black board with 1 + 1 = 2 written on it in white chalk
In this post we talk about the different types we can use in VHDL as well as the methods we can use to convert them.
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In this post we talk about the methods we can use to create custom data types in VHDL
A picture of a number of electronic chips mounted on a PCB.
In this post we look at the coding techniques which we can use to describe basic combinatorial logic circuits using VHDL.
The top half of an analog pocket watch.
In this post we discuss the coding methods we can use to model basic sequential logic circuits using VHDL.
A picture of some electronic test equipment placed on top of a work bench
In this post we talk about testing our VHDL based designs using basic test benches.
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In this post we discuss some of the coding techniques we can use within a VHDL process to write more complex logic circuits.
A computer screen showing the source code for a function
In this post we discuss subprograms and how we use them to write more efficient VHDL code.
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In this post we look at how we use generics and generate statements to write reusable VHDL components.
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In this post we talk about writing objected oriented code in VHDL using shared variables and protected types