FSM design using Verilog :: Electrosofts.com.
This page contains Verilog tutorial, Verilog Syntax, Verilog Quick Reference, PLI, modelling memory and FSM, Writing Testbenches in Verilog, Lot of Verilog Examples and Verilog in One Day Tutorial.
These are some problems with both the FSM code and the testbench code in your example, but the main issue is that to test an FSM you need t apply a sequence of input values and check the outputs. You can't just toggle your input signal between 1 and 0.
Not to long ago, I wrote a post about what a state machine is.That post covered the state machine as a concept and way to organize your thoughts. Well, if you are looking to use state machines in FPGA design, the idea isn’t much help without knowing how to code it.
This page contains Verilog tutorial, Verilog Syntax, Verilog Quick Reference, PLI, modelling memory and FSM, Writing Testbenches in Verilog, Lot of Verilog Examples and Verilog in One Day Tutorial. Art of Writing TestBenches. Part - II. Feb-9-2014 Test Bench: 1 module counter.
FSM Example GOAL: Build an electronic combination lock with a reset button, two number buttons (0 and 1), and an unlock output. The combination should be 01011. “0” “1” RESET UNLOCK STEPS: 1. Design lock FSM (block diagram, state transitions) 2. Write Verilog module(s) for FSM 6.111 Fall 2017 Lecture 6 14.
My professor gave us several Verilog test files to write Verilog test benches for. In the test bench, we're supposed to initialize the state to 0, apply random inputs, and check to see if we have reached the target state within x amount of cycles.
R Writing Efficient Testbenches languages, verification suites written in VHDL or Verilog can be reused in future designs without difficulty. Constructing Testbenches Testbenches can be written in VHDL or Verilog. Since testbenches are used for simulation only, they are not limited by semantic constraints that apply to RTL language subsets used in.