| // Hex shift register |
| // Copyright 2022 Eric Smith <spacewar@gmail.com> |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| `default_nettype none |
| |
| module hex_sr #( parameter LENGTH = 40 ) ( |
| input [7:0] io_in, |
| output [7:0] io_out |
| ); |
| |
| wire clk; |
| wire recirc; |
| wire [5:0] data_in; |
| |
| wire [5:0] data_out; |
| |
| assign clk = io_in[0]; |
| assign recirc = io_in[1]; |
| assign data_in = io_in[7:2]; |
| |
| assign io_out[7:2] = data_out; |
| assign io_out[1:0] = 2'b0; |
| |
| genvar i; |
| generate |
| for (i = 0; i < 6; i = i + 1) |
| sr_recirc #(.LENGTH(LENGTH)) sr0(clk, recirc, data_in[i], data_out[i]); |
| endgenerate |
| |
| endmodule |
