yuhei1horibe

// RCA (Ripple Carry Adder)
module half_adder(
    input a,
    input b,
    output y,
    output cout
);
    assign cout = a & b; // Carry over
    assign y    = a ^ b;
endmodule

yuhei1horibe

// SPDX-License-Identifier: GPL-2.0
/*
 * Zedboard ASoC sound card support
 *
 * @author Yuhei Horibe
 * Original code: xlnx_pl_snd_card.c
 * Reference: zed_adau1761.c
 *
 * This sound card driver is specific to Zedboard
 * Both I2S transmitter and I2S receiver device tree nodes

yuhei1horibe

/******************************************************************************
*
* Copyright (C) 2009 - 2014 Xilinx, Inc.  All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:

yuhei1horibe

    // Add user logic here
    wire [4:0]out_from_adder;

    // Assign result
    always @( posedge S_AXI_ACLK)
      begin
        if (S_AXI_ARESETN == 1'b0 )
          begin
            output_reg <= 32'h00000000;
          end

yuhei1horibe

my_adder_v1_0_S00_AXI # ( 
		.C_S_AXI_DATA_WIDTH(C_S00_AXI_DATA_WIDTH),
		.C_S_AXI_ADDR_WIDTH(C_S00_AXI_ADDR_WIDTH)
	) my_adder_v1_0_S00_AXI_inst (
	    .LED_OUT(led_out),
		.S_AXI_ACLK(s00_axi_aclk),
		.S_AXI_ARESETN(s00_axi_aresetn),
		.S_AXI_AWADDR(s00_axi_awaddr),
		.S_AXI_AWPROT(s00_axi_awprot),
		.S_AXI_AWVALID(s00_axi_awvalid),

yuhei1horibe

always @( posedge S_AXI_ACLK )
	begin
	  if ( S_AXI_ARESETN == 1'b0 )
	    begin
	      input_a_reg <= 0;
	      input_b_reg <= 0;
	      //output_reg <= 0;
	      spare_reg <= 0;
	    end 
	  else begin

yuhei1horibe

module half_adder(                                                                                                                                                                        
    input a,                                                                                                                                                                              
    input b,                                                                                                                                                                              
    output y,                                                                                                                                                                             
    output cout);                                                                                                                                                                         
    assign cout = a & b; // Carry over