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[/] [xulalx25soc/] [trunk/] [rtl/] [wbuinput.v] - Rev 52
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//////////////////////////////////////////////////////////////////////////////// // // Filename: wbuinput.v // // Project: XuLA2 board // // Purpose: Coordinates the receiption of bytes, which are then translated // into codewords describing postential bus transactions. This // includes turning the human readable bytes into more compact bits, // forming those bits into codewords, and decompressing any that reference // addresses within a compression table. // // // Creator: Dan Gisselquist, Ph.D. // Gisselquist Technology, LLC // //////////////////////////////////////////////////////////////////////////////// // // Copyright (C) 2015, Gisselquist Technology, LLC // // This program is free software (firmware): you can redistribute it and/or // modify it under the terms of the GNU General Public License as published // by the Free Software Foundation, either version 3 of the License, or (at // your option) any later version. // // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // License: GPL, v3, as defined and found on www.gnu.org, // http://www.gnu.org/licenses/gpl.html // // //////////////////////////////////////////////////////////////////////////////// // // module wbuinput(i_clk, i_stb, i_byte, o_stb, o_codword); input i_clk, i_stb; input [7:0] i_byte; output wire o_stb; output wire [35:0] o_codword; wire hx_stb, hx_valid; wire [5:0] hx_hexbits; wbutohex tobits(i_clk, i_stb, i_byte, hx_stb, hx_valid, hx_hexbits); wire cw_stb; wire [35:0] cw_word; wbureadcw formcw(i_clk, hx_stb, hx_valid, hx_hexbits, cw_stb, cw_word); // `define DEBUGGING `ifdef DEBUGGING assign o_stb = cw_stb; assign o_codword = cw_word; `else wbudecompress unpack(i_clk,cw_stb,cw_word, o_stb, o_codword); `endif endmodule
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