Write to File in VHDL using TextIO Library
Learn how to use the VHDL TextIO library to write simulation results to ASCII files. Includes formatting, CSV output, and a complete process example.
Read from File in VHDL using TextIO Library
Learn how to read stimuli from an input file in VHDL using the TextIO library. Step-by-step guide to readline and read procedures for testbench design.
How to Implement a Finite State Machine in VHDL
Learn how to implement a Finite State Machine (FSM) in VHDL. This guide covers Moore and Mealy FSMs with a practical vending machine example.
How to Design SPI Controller in VHDL
Learn how to design an SPI controller in VHDL. This guide covers SPI protocol basics, CPOL/CPHA modes, and a complete VHDL implementation with FSM and simulation.
How to Implement FIR Filter in VHDL
Learn how to implement a 4-tap FIR filter in VHDL with fully pipelined architecture, 8-bit signed inputs and coefficients.
How to Divide an Integer by Constant in VHDL
Learn how to efficiently divide an integer by a constant in VHDL using multiplication and bit-shifting instead of costly division — saving FPGA resources and improving timing.
How to Connect an ADC to an FPGA
A practical guide to connecting an ADC to an FPGA. Learn parallel SDR and DDR interfacing with VHDL code examples, timing analysis, and buffer storage calculations.
Binary Number Representation
Interactive guide to binary number representation, 2’s complement, and VHDL sign extension. Includes calculators and a binary math quiz.
Why Should You Learn VHDL?
Should you learn VHDL in the age of HLS and AI? Discover the strategic value of hardware description languages and why VHDL skills are still a must for FPGA engineers.