Subversion Repositories dma_axi

/////////////////////////////////////////////////////////////////////

////                                                             ////

////  Author: Eyal Hochberg                                      ////

////          eyal@provartec.com                                 ////

////                                                             ////

////  Downloaded from: http://www.opencores.org                  ////

/////////////////////////////////////////////////////////////////////

////                                                             ////

//// Copyright (C) 2010 Provartec LTD                            ////

//// www.provartec.com                                           ////

//// info@provartec.com                                          ////

////                                                             ////

//// This source file may be used and distributed without        ////

//// restriction provided that this copyright statement is not   ////

//// removed from the file and that any derivative work contains ////

//// the original copyright notice and the associated disclaimer.////

////                                                             ////

//// This source file is free software; you can redistribute it  ////

//// and/or modify it under the terms of the GNU Lesser General  ////

//// Public License as published by the Free Software Foundation.////

////                                                             ////

//// This source is distributed in the hope that it will be      ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied  ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR     ////

//// PURPOSE.  See the GNU Lesser General Public License for more////

//// details. http://www.gnu.org/licenses/lgpl.html              ////

////                                                             ////

/////////////////////////////////////////////////////////////////////

//---------------------------------------------------------

//-- File generated by RobustVerilog parser

//-- Version: 1.0

//-- Invoked Fri Mar 25 23:36:56 2011

//--

//-- Source file: dma_ch_offsets.v

//---------------------------------------------------------

module dma_axi64_core0_ch_offsets(clk,reset,ch_update,burst_start,burst_last,burst_size,load_req_in_prog,x_size,y_size,x_offset,y_offset,x_remain,clr_remain,ch_end,go_next_line,incr,clr_line,line_empty,empty,start_align,width_align,align);

   input             clk;

   input             reset;

   input             ch_update;

   input             burst_start;

   input             burst_last;

   input [8-1:0]   burst_size;

   input             load_req_in_prog;

   input [10-1:0]    x_size;

   input [10-`X_BITS-1:0]         y_size;

   output [10-1:0]   x_offset;

   output [10-`X_BITS-1:0]         y_offset;

   output [10-1:0]   x_remain;

   output [10-`X_BITS-1:0]         clr_remain;

   output             ch_end;

   output             go_next_line;

   input             incr;

   input             clr_line;

   output             line_empty;

   output             empty;

   input [3-1:0]    start_align;

   input [3-1:0]    width_align;

   output [3-1:0]   align;

   wire             update_line;

   wire             go_next_line;

   wire             line_end_pre;

   wire             line_empty;

   reg [10-1:0]         x_remain;

   wire             ch_end_pre;

   reg                 ch_end;

   wire             ch_update_d;

   assign             ch_end_pre   = burst_start & burst_last;

   assign             go_next_line = 1'b0;

   assign             line_empty   = 1'b0;

   assign             empty        = ch_end_pre | ch_end;

   always @(posedge clk or posedge reset)

     if (reset)

       ch_end <= #1 1'b0;

     else if (ch_update)

       ch_end <= #1 1'b0;

     else if (ch_end_pre)

       ch_end <= #1 1'b1;

   always @(posedge clk or posedge reset)

     if (reset)

       x_remain <= #1 {10{1'b0}};

     else if (ch_update | go_next_line)

       x_remain <= #1 x_size;

     else if (burst_start & (~load_req_in_prog))

       x_remain <= #1 x_remain - burst_size;

   assign             x_offset   = {10{1'b0}};

   assign             y_offset   = {10-`X_BITS{1'b0}};

   assign             clr_remain = {10-`X_BITS{1'b0}};

   assign             align      = start_align;

endmodule