Add initial NanoXplore pass

techlibs/nanoxplore/cells_map.v

@@ -0,0 +1,34 @@
+`default_nettype none
+
+module \$lut (A, Y);
+  parameter WIDTH = 0;
+  parameter LUT = 0;
+
+  (* force_downto *)
+  input [WIDTH-1:0] A;
+  output Y;
+
+  generate
+    if (WIDTH == 1) begin
+      localparam [15:0] INIT = {{8{LUT[1]}}, {8{LUT[0]}}};
+      NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
+        .I1(1'b0), .I2(1'b0), .I3(1'b0), .I4(A[0]));
+    end else
+    if (WIDTH == 2) begin
+      localparam [15:0] INIT = {{4{LUT[3]}}, {4{LUT[2]}}, {4{LUT[1]}}, {4{LUT[0]}}};
+      NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
+        .I1(1'b0), .I2(1'b0), .I3(A[0]), .I4(A[1]));
+    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]}}};
+      NX_LUT #(.lut_table(INIT)) _TECHMAP_REPLACE_ (.O(Y),
+        .I1(1'b0), .I2(A[0]), .I3(A[1]), .I4(A[2]));
+    end else
+    if (WIDTH == 4) begin
+      NX_LUT #(.lut_table(LUT)) _TECHMAP_REPLACE_ (.O(Y),
+        .I1(A[0]), .I2(A[1]), .I3(A[2]), .I4(A[3]));
+    end else begin
+      wire _TECHMAP_FAIL_ = 1;
+    end
+  endgenerate
+endmodule