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 SVUG Community Forum
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| Author |
Messages |
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Thiagarajan
Posts:5
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| 11/19/2009 9:37 AM |
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Hi,
Can packed unions be used in port list? For example
typedef union packed {
shortint a;
logic ⎛:0] b;
} type_union;
module test (
input clk,
input type_union data_ip,
output type_union data_op);
always @ (clk)
begin
data_op.b <= data_ip.b;
end
endmodule
My module is somthing like this. This module is instantiated in another module like
test U1
(...
data_ip (data_top_ip),
data_op(data_top_op)
);
data_top_ip and data_top_op is also of the same union type.
The sythesis tool gives warning that data_top_ip is not being used, removing instance U1.
I dont understand whats happening. Please help me. |
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