| // Copyright 2020-2022 F4PGA Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| (* keep_hierarchy *) |
| module my_lut ( |
| input wire [3:0] i, |
| output wire o |
| ); |
| |
| LUT4 #( |
| .INIT(16'hAAAA) |
| ) my_lut ( |
| .I0(i[0]), |
| .I1(i[1]), |
| .I2(i[2]), |
| .I3(1'bx), |
| .O (o) |
| ); |
| |
| endmodule |
| |
| module my_top ( |
| input wire i, |
| output wire o |
| ); |
| |
| my_lut my_lut ( |
| .i({1'b0, 1'b1, i}), |
| .o(o) |
| ); |
| |
| endmodule |