| // SPDX-License-Identifier: MIT | |
| // SPDX-FileCopyrightText: 2022 Tamas Hubai | |
| `default_nettype none | |
| module u21_ref ( | |
| input [3:0] func, | |
| input [1:0] pin, | |
| output [2:0] wiring | |
| ); | |
| parameter U21_REF_LEN = 16; | |
| (* rom_style = "block" *) | |
| reg [11:0] u21_ref_data [0:U21_REF_LEN-1]; | |
| initial $readmemb("u21_ref.mem", u21_ref_data); | |
| wire [11:0] wfull = u21_ref_data[func]; | |
| assign wiring = wfull[3*pin+:3]; | |
| endmodule | |