Verilog HDL

ece45 Articles
beginner

Introduction to HDLs

Verilog vs VHDL, simulation vs synthesis.

12 min read
Feb 19, 2026
beginner

Procedural Blocks

Always block, initial block, sensitivity lists.

4 min read
Feb 19, 2026
beginner

Blocking vs Non-Blocking

Operators = vs <=, scheduling semantics.

7 min read
Feb 19, 2026
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Control Statements

If-else, case, casez, casex statements.

4 min read
Feb 19, 2026
beginner

Loops in Verilog

For, while, repeat, forever loops.

8 min read
Feb 19, 2026
beginner

Timing Controls

Delay control #, event control @, wait statement.

4 min read
Feb 19, 2026
beginner

Block Statements

Begin-end, fork-join parallel blocks.

9 min read
Feb 19, 2026
beginner

Task and Function

Subroutines, differences, automatic re-entrancy.

5 min read
Feb 19, 2026
beginner

Continuous Assignment

Assign statement, implicit continuous assignment.

12 min read
Feb 19, 2026
beginner

Conditional Operator

Modeling MUX using ternary operator.

7 min read
Feb 19, 2026
beginner

Modeling Combinational Logic

Boolean equations using dataflow.

7 min read
Feb 19, 2026
beginner

Gate Level Modeling

Built-in primitives (and, or, not), gate delays.

7 min read
Feb 19, 2026
beginner

gate delays

Rise, fall, turn-off delays, min/typ/max.

5 min read
Feb 19, 2026
beginner

Module Instantiation

Port mapping by order, by name.

6 min read
Feb 19, 2026
beginner

Generate Blocks

Conditional and loop generate for scalable structures.

12 min read
Feb 19, 2026
beginner

Modeling Latches

Level sensitive behavior, inferring latches accident.

6 min read
Feb 19, 2026
beginner

Modeling Counters

Up/down counter, mod-N counter.

12 min read
Feb 19, 2026
beginner

Modeling Shift Registers

SISO, SIPO, PISO, PIPO.

8 min read
Feb 19, 2026
beginner

Modeling Multiplexers

Using if-else, case, assign statements.

12 min read
Feb 19, 2026
beginner

Modeling Decoders/Encoders

Behavioral modeling of 3:8 decoder, priority encoder.

7 min read
Feb 19, 2026
beginner

Modeling ALUs

Arithmetic Logic Unit implementation.

10 min read
Feb 19, 2026
beginner

Modeling Adders

Half, Full, Ripple Carry Adder.

10 min read
Feb 19, 2026
beginner

Testbench Basics

Stimulus, monitoring, checking results.

12 min read
Feb 19, 2026
beginner

System Tasks

File I/O ($fopen), printing ($display, $monitor).

11 min read
Feb 19, 2026
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FPGA vs ASIC

Programmable logic vs fixed custom silicon.

10 min read
Feb 19, 2026
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Synthesis Concepts

RTL to Netlist translation.

12 min read
Feb 19, 2026
beginner

Verilog 2001 Features

Signed arithmetic, generate, wildcards.

10 min read
Feb 19, 2026
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Lexical Conventions

Keywords, identifiers, numbers, whiteboard.

10 min read
Feb 19, 2026
beginner

Delays in Dataflow

Inertial delay, transport delay.

4 min read
Feb 19, 2026
beginner

User Defined Primitives

Creating custom combinational/sequential primitives.

6 min read
Feb 19, 2026
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Switch Level Modeling

NMOS, PMOS, CMOS switches, transmission gates.

10 min read
Feb 19, 2026
beginner

Modeling Comparators

Comparing vectors.

10 min read
Feb 19, 2026
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Randomization

Using $random for test vectors.

8 min read
Feb 19, 2026
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Assertions

Introduction to SystemVerilog Assertions (SVA).

7 min read
Feb 19, 2026
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Simulation Time

Timescale directive, $time, $finish, $stop.

10 min read
Feb 19, 2026
beginner

Verification Plan

Directed vs Random testing strategies.

5 min read
Feb 19, 2026
beginner

Synchronous Memories

Modeling RAM/ROM with clock.

11 min read
Feb 19, 2026
beginner

PLI Basics

Programming Language Interface C/C++ connection.

11 min read
Feb 19, 2026
beginner

Modeling Flip-Flops

D-FF, T-FF, JK-FF with async/sync resets.

7 min read
Feb 19, 2026
beginner

Data Types and Logic Values

Net (wire), Register (reg), 4-value logic (0,1,x,z).

9 min read
Feb 19, 2026
beginner

Vectors and Arrays

Declaring buses, memories, reg [7:0] mem [0:255].

4 min read
Feb 19, 2026
beginner

Verilog Operators

Arithmetic, logical, bitwise, reduction, shift, concatenation.

10 min read
Feb 19, 2026
beginner

Verilog Module Structure

Module, ports, endmodule, instance hierarchy.

4 min read
Feb 19, 2026
beginner

Port Connection Rules

Input, Output, Inout, reg/wire connection rules.

6 min read
Feb 19, 2026
beginner

FSM Behavioral Modeling

Mealy vs Moore coding styles.

11 min read
Feb 19, 2026