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The (*) means build the sensitivity list for me As others have already pointed out, decimal works well for currency. For example, if you had a statement a = b + c

Then you'd want a to change every time either b or c changes 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 In other words, a is sensitive to b & c

So to set this up

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 The always @(*) block is sensitive to change of the values all the variables, that is read by always block or we can say which are at the right side inside the always block

In your example, there are no any variables used inside always block, so this always @(*) block will not work here As per sv lrm, always_comb is sensitive to changes within the contents of a function,. Using images tagged :latest imagepullpolicy Always is specified this is great if you want to always pull

But what if you want to do it on demand

Statements are always found in procedural contexts, which include anything in between begin.end, functions, tasks, always blocks and initial blocks Items, such as generate constructs, are listed directly in the module For loops and most variable/constant declarations can exist in both contexts. Format number to always show 2 decimal places asked 14 years, 3 months ago modified 1 year, 7 months ago viewed 2.2m times

The expression always @* begin Name_of_my_combinational_logic_block // code end describes combinational logic Typically the clk and rst signals are not read from inside of this type of always block, so they don't appear in the sensitivity list like wisemonkey says It is best practice to use @* for the sensitivity lists of combinational logic so that you don't forget to include a.

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. Async always waitingforactivation asked 11 years, 8 months ago modified 5 years, 2 months ago viewed 177k times

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