From 872349eb3a3a508abee028e75da546692eb8e0e7 Mon Sep 17 00:00:00 2001 From: Alejandro Soto Date: Wed, 28 Feb 2024 16:07:44 -0600 Subject: rtl: add dma_axi32 --- rtl/dma_axi32/prgen_stall.v | 79 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 rtl/dma_axi32/prgen_stall.v (limited to 'rtl/dma_axi32/prgen_stall.v') diff --git a/rtl/dma_axi32/prgen_stall.v b/rtl/dma_axi32/prgen_stall.v new file mode 100644 index 0000000..eb39668 --- /dev/null +++ b/rtl/dma_axi32/prgen_stall.v @@ -0,0 +1,79 @@ +///////////////////////////////////////////////////////////////////// +//// //// +//// 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 23:34:51 2011 +//-- +//-- Source file: prgen_stall.v +//--------------------------------------------------------- + + + +module prgen_stall(clk,reset,din,stall,dout); + + parameter DEPTH = 1; + + input clk; + input reset; + + input din; + input stall; + output dout; + + + + reg [DEPTH-1:0] count; + wire pend; + + + always @(posedge clk or posedge reset) + if (reset) + count <= #1 {DEPTH{1'b0}}; + else if (pend & (~stall)) + count <= #1 count - 1'b1; + else if (din & stall) + count <= #1 count + 1'b1; + + assign pend = (|count); + assign dout = (din | pend) & (~stall); + + + + + +endmodule + + + + + + + + -- cgit v1.2.3