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Make lut init match vendor tools

This commit is contained in:
Miodrag Milanovic 2024-03-01 10:44:42 +01:00
parent 3b48e9df61
commit 94b6f19cf0
1 changed files with 7 additions and 6 deletions
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13
techlibs/nanoxplore/cells_map.v
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@ -10,19 +10,20 @@ module \$lut (A, Y);
generate
if (WIDTH == 1) begin
localparam [15:0] INIT = {{8{LUT[1]}}, {8{LUT[0]}}};
localparam [15:0] INIT = {{2{LUT[1:0]}}, {2{LUT[1:0]}}, {2{LUT[1:0]}}, {2{LUT[1:0]}},
{2{LUT[1:0]}}, {2{LUT[1:0]}}, {2{LUT[1:0]}}, {2{LUT[1:0]}}};
NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
.I1(1'b0), .I2(1'b0), .I3(1'b0), .I4(A[0]));
.I1(A[0]), .I2(1'b0), .I3(1'b0), .I4(1'b0));
end else
if (WIDTH == 2) begin
localparam [15:0] INIT = {{4{LUT[3]}}, {4{LUT[2]}}, {4{LUT[1]}}, {4{LUT[0]}}};
localparam [15:0] INIT = {{4{LUT[3:0]}}, {4{LUT[3:0]}}, {4{LUT[3:0]}}, {4{LUT[3:0]}}};
NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
.I1(1'b0), .I2(1'b0), .I3(A[0]), .I4(A[1]));
.I1(A[0]), .I2(A[1]), .I3(1'b0), .I4(1'b0), );
end else
if (WIDTH == 3) begin
localparam [15:0] INIT = {{2{LUT[7]}}, {2{LUT[6]}}, {2{LUT[5]}}, {2{LUT[4]}}, {2{LUT[3]}}, {2{LUT[2]}}, {2{LUT[1]}}, {2{LUT[0]}}};
localparam [15:0] INIT = {{8{LUT[7:0]}}, {8{LUT[7:0]}}};
NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
.I1(1'b0), .I2(A[0]), .I3(A[1]), .I4(A[2]));
.I1(A[0]), .I2(A[1]), .I3(A[2]), .I4(1'b0));
end else
if (WIDTH == 4) begin
NX_LUT #(.lut_table(LUT)) _TECHMAP_REPLACE_ (.O(Y),