// mult_controller.v
// Ordinary signed multiplier controller, pin compatible with DKCM version
// $Id$
// Larry Doolittle, LBNL

// llc-suite Copyright (c) 2004, The Regents of the University of
// California, through Lawrence Berkeley National Laboratory (subject
// to receipt of any required approvals from the U.S. Dept. of Energy).
// All rights reserved.

// Your use of this software is pursuant to a "BSD-style" open
// source license agreement, the text of which is in license.txt
// (md5sum a1e0e81c78f6eba050b0e96996f49fd5) that should accompany
// this file.  If the license agreement is not there, or if you
// have questions about the license, please contact Berkeley Lab's
// Technology Transfer Department at TTD@lbl.gov referring to
// "llc-suite (LBNL Ref CR-1988)"

`timescale 1ns / 1ns


module dkcm_controller(
	input  host_clk,           // interconnect
	input  [13:0] host_addr,   // interconnect
	input  host_we,            // interconnect
	input  select,             // select  KCM_BASE
	input  [15:0] host_data,   // interconnect
	output dkcm_busy,          // interconnect
	output [21:0] dkcm_bus     // interconnect
);

wire load = host_we & select;
assign dkcm_busy = load;  // strange, but needed to keep test bench happy

reg load_last;
always @(posedge host_clk) load_last <= load;

wire corrupt = load | load_last;
assign dkcm_bus = {corrupt, host_data, host_addr[2:0], 1'b0, load};

endmodule