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Modify DW02_multp to properly list the correct number of bits at the output (i.e., 2*WIDTH + 2).

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James E. Stine 2021-10-19 11:58:06 -05:00
parent 8d08ca6a1e
commit b65a4bd040
1 changed files with 17 additions and 10 deletions
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9
wally-pipelined/src/muldiv/redundantmul.sv
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@ -29,9 +29,16 @@ module redundantmul #(parameter WIDTH =8)(
input logic [WIDTH-1:0] a,b,
output logic [2*WIDTH-1:0] out0, out1);
logic [2*WIDTH-1+2:0] tmp_out0;
logic [2*WIDTH-1+2:0] tmp_out1;
generate
if (`DESIGN_COMPILER == 1)
DW02_multp #(WIDTH, WIDTH, 2*WIDTH) mul(.a, .b, .tc(1'b0), .out0, .out1);
begin
DW02_multp #(WIDTH, WIDTH, 2*WIDTH+2) mul(.a, .b, .tc(1'b0), .out0(tmp_out0), .out1(tmp_out1));
assign out0 = tmp_out0[2*WIDTH-1:0];
assign out1 = tmp_out1[2*WIDTH-1:0];
end
else if (`DESIGN_COMPILER == 2)
mult_cs #(WIDTH) mul(.a, .b, .tc(1'b0), .sum(out0), .carry(out1));
else begin // force a nonredunant multipler. This will simulate properly and also is appropriate for FPGAs.