Upper limit for sensitivity list elements in combinational block

[star_golden]

Hi all,

Is there is any upper limit in the sensitivity list for a combinatorial always block..?

For eg :

If the combinatorial always block code is like :

always @ (posedge a or posedge b or negedge c...)
begin
end

My question is :
Is there like only 2 elements must be present inside the always block or can we write more..?

Thanks and regards

 

[FvM]

always @ (posedge a or posedge b or negedge c...)

models edge sensitive sequential, not combinational logic.

 

[star_golden]

a, b or c - Not clocks

So, I did not get how it models sequential logic..?

 

[FvM]

To model combinational logic, you'll write

always @ (a or b or c...)

or

always @ (a, b, c...)

There's no limitation on the number of events in the event expression.

 

[imbichie]

hi FvM,
is it a good practice to use

always @( * )

?