The problem is that you read and assign to the counter signal in side the always_comb block: counter = counter - 1; This can create a combinational feedback loop. Similarly for: counter = …

Jul 7, 2016 · A combinational circuit is one that implements a pure logic function without any state. There is no need for a clock in a combinational circuit. A sequential circuit is one that changes …

Jun 14, 2020 · When describing combinational logic in always blocks, you have to make sure that all your variables are assigned to a value in all paths in your code. Otherwise a latch will be …

A continuous assignment is just a simpler way of expressing the same thing as what you can do with an always block. The assign statement only lets you write to one signal at a time with one …

Mar 30, 2016 · For combinational segments we will use Nonblocking Statements because, when we use Blocking or NonBlocking statements, even though it gives us the same hardware or …

Mar 17, 2014 · I tried to figure out the inferred latch and why it is needed internally, but I couldn't find any resources with enough detail.

Nov 1, 2015 · Remember, wire can only infer to combinational logic, while reg can infer to either combinational or sequential logic. Dave's blog is a good source for detailed information. For …

Jul 16, 2020 · now I know in Verilog, to make a sequential logic you would almost always have use the non-blocking assignment (<=) in an always block. But does this rule also apply to …

Mar 21, 2022 · It obviously depends on your specific code but I would still suggest trying to avoid creating the false combinational loop. It is likely true that it is a false loop, but tools like …

Sep 28, 2022 · The 1st warning message indicates that verilator interprets your 1st always block as combinational logic, not sequential logic, and it treats the nonblocking assignment operator …