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Renamed $lut ports to follow A-Y naming scheme

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This commit is contained in:
Clifford Wolf 2014-08-15 14:18:40 +02:00
parent f092b50148
commit b64b38eea2
6 changed files with 38 additions and 39 deletions
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22
techlibs/common/simlib.v
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@ -955,13 +955,13 @@ endmodule
// --------------------------------------------------------
`ifndef SIMLIB_NOLUT
module \$lut (I, O);
module \$lut (A, Y);
parameter WIDTH = 0;
parameter LUT = 0;
input [WIDTH-1:0] I;
output reg O;
input [WIDTH-1:0] A;
output reg Y;
wire lut0_out, lut1_out;
@ -969,18 +969,18 @@ generate
if (WIDTH <= 1) begin:simple
assign {lut1_out, lut0_out} = LUT;
end else begin:complex
\$lut #( .WIDTH(WIDTH-1), .LUT(LUT ) ) lut0 ( .I(I[WIDTH-2:0]), .O(lut0_out) );
\$lut #( .WIDTH(WIDTH-1), .LUT(LUT >> (2**(WIDTH-1))) ) lut1 ( .I(I[WIDTH-2:0]), .O(lut1_out) );
\$lut #( .WIDTH(WIDTH-1), .LUT(LUT ) ) lut0 ( .A(A[WIDTH-2:0]), .Y(lut0_out) );
\$lut #( .WIDTH(WIDTH-1), .LUT(LUT >> (2**(WIDTH-1))) ) lut1 ( .A(A[WIDTH-2:0]), .Y(lut1_out) );
end
if (WIDTH > 0) begin:lutlogic
always @* begin
casez ({I[WIDTH-1], lut0_out, lut1_out})
3'b?11: O = 1'b1;
3'b?00: O = 1'b0;
3'b0??: O = lut0_out;
3'b1??: O = lut1_out;
default: O = 1'bx;
casez ({A[WIDTH-1], lut0_out, lut1_out})
3'b?11: Y = 1'b1;
3'b?00: Y = 1'b0;
3'b0??: Y = lut0_out;
3'b1??: Y = lut1_out;
default: Y = 1'bx;
endcase
end
end