verilog - What does always block @ (*) means? - Stack Overflow
always @( b or c ) begin a = b + c; end But imagine you had a large always block that was sensitive to loads of signals. Writing the sensitivity list would take ages. In fact, if you accidentally leave a signal out, the behaviour might change too! So (*) is a shorthand to solve these problems.
Behavior difference between always_comb and always@ (*)
2015年9月25日 — always_comb is sensitive to changes within the contents of a function, whereas always @* is only sensitive to changes to the arguments of a function. i.e., whenever the variables inside a function will change, the always_comb will trigger, but in your case, always @ (*) will only trigger if we pass an argument in the function.
What's included in a Verilog always @* sensitivity list?
2012年3月12日 — So, always use "always @*" or better yet "always_comb" and forget about the concept of sensitivity lists. If the item in the code is evaluated it will trigger the process. Simple as that. It an item is in an if/else, a case, assigned to a variable, or anything else, it will be "evaluated" and thus cause the process to be triggered.
Verilog Always block using (*) symbol - Stack Overflow
The always @(*) syntax was added to the IEEE Verilog Std in 2001. All modern Verilog tools (simulators, synthesis, etc.) support this syntax. Here is a quote from the LRM (1800-2009): An incomplete event_expression list of an event control is a common source of bugs in register transfer level (RTL) simulations.
Verilog: Difference between `always` and `always - Stack Overflow
2012年4月2日 — 4. always @* is one type of always block. It is used for inferring combinational logic. always @(posedge clock) is used to infer sequential logic. Refer to the IEEE Standard (1800-2009, for example) for further details. answered Apr 2, 2012 at …
Difference among always_ff, always_comb, always_latch and always
The SystemVerilog names always_ff, always_latch and always_comb have stricter criteria for when they are triggered, this means the chance for RTL to Gate level (post synthesis) mismatch is reduced. It does mean they are not 100% equivalent to their always @ counterpart and may change some simulation behaviour.
verilog - Use of forever and always statements - Stack Overflow
2013年6月21日 — The difference between forever and always is that always can exist as a "module item", which is the name that the Verilog spec gives to constructs that may be written directly within a module, not contained within some other construct. initial is also a module item. always blocks are repeated, whereas initial blocks are run once at the start of ...
Docker - what does `docker run --restart always` actually do?
2017年1月10日 — Docker supports the following restart policies: always Always restart the container regardless of the exit status. When you specify always, the Docker daemon will try to restart the container indefinitely. The container will also always start on daemon startup, regardless of the current state of the container. $ docker run --restart=always redis.
Verilog generate/genvar in an always block - Stack Overflow
The always @posedge doesn't have meaning until the design is operating. Subject to certain restrictions, you can put a for loop inside the always block, even for synthesizable code. For synthesis, the loop will be unrolled. However, in that case, the for loop needs to work with a reg, integer, or similar.
How can I format a decimal to always show 2 decimal places?
The OP always wants two decimal places displayed, so explicitly calling a formatting function, as all the other answers have done, is not good enough. As others have already pointed out, Decimal works well for currency. But Decimal shows all the decimal places. So, override its display formatter: