SVIncCompil/Testcases/Icarus/ivltests/dummy7.v

/*
 * Copyright (c) 2002 Stephen Rowland
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 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
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
module dummy7;

`define ADDR1 16'h0011
`define ADDR2 16'h0022

`define ADDR81 8'h11
`define ADDR82 8'h22

reg [7:0] data1;
reg [7:0] data2;
reg [7:0] data3;
reg [7:0] data4;
reg [7:0] addr;
reg [15:0] addr16;

// use mod operator to convert literal to 8 bits - this works in verilogXL
always @ (addr)
case (addr)
`ADDR1    %256  : data1 = 8'h11;
`ADDR2    %256  : data1 = 8'h22;
default         : data1 = 8'h00;
endcase

// icarus like this
always @ (addr)
case (addr)
`ADDR1          : data2 = 8'h11;
`ADDR2          : data2 = 8'h22;
default         : data2 = 8'h00;
endcase


always @ (addr16)
case (addr16)
`ADDR1          : data3 = 8'h11;
`ADDR2          : data3 = 8'h22;
default         : data3 = 8'h00;
endcase

always @ (addr)
case (addr)
`ADDR81         : data4 = 8'h11;
`ADDR82         : data4 = 8'h22;
default         : data4 = 8'h00;
endcase


initial
begin
addr   =  8'h00;  
addr16 = 16'h0000;
#10;
$display("should be 00 -- data1=%h  data2=%h  data3=%h  data4=%h\n",data1,data2,data3,data4);

addr   =  8'h11;  
addr16 = 16'h0011;
#10;
$display("should be 11 -- data1=%h  data2=%h  data3=%h  data4=%h\n",data1,data2,data3,data4);

addr   =  8'h22;  
addr16 = 16'h0022;
#10;
$display("should be 22 -- data1=%h  data2=%h  data3=%h  data4=%h\n",data1,data2,data3,data4);


$finish;
end
endmodule