The part that causes problems is c[1] = p[0] + g[0] & c0;. What's wrong with it?
module CLA_gen(p, g, c0, c);
input [3:0] p;
input [3:0] g;
input c0;
output reg [4:1] c;
begin
c[1] = p[0] + g[0] & c0;
end
endmodule
-
2What problems does it cause? What compiler error(s) do you get?Gareth McCaughan– Gareth McCaughan2011-03-08 21:43:38 +00:00Commented Mar 8, 2011 at 21:43
-
2Agreed, in general it is good form to include an output errors.Dr. Watson– Dr. Watson2011-03-08 22:14:38 +00:00Commented Mar 8, 2011 at 22:14
Add a comment
|
4 Answers
You're missing your always block and its sensitivity list.
always @(*)
c[1] = p[0] + g[0] & c0;
In the code you posted above, you don't necessarily need the begin/end since you only have one line. But it doesn't not hurt to add it in there.
Comments
You most likely want to change:
begin
to:
always @* begin
Every begin/end must be part of another construct, such as always, initial, etc.
Comments
Remove the begin and end declare c only as an output
follow this
module CLA_gen(p, g, c0, c);
input [3:0] p;
input [3:0] g;
input c0;
output [4:1] c;
assign c[1] = p[0] + g[0] & c0;
endmodule
Comments
You might need to use <= instead of = .
1 Comment
Dr. Watson
We don't know what he is modeling at this point so we cannot make that judgement yet.