77 lines
1.9 KiB
Coq
77 lines
1.9 KiB
Coq
|
//
|
||
|
|
// Copyright (c) 1999 Steven Wilson (stevew@home.com)
|
||
|
|
//
|
||
|
|
// 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
|
||
|
|
//
|
||
|
|
// SDW - Validate assign { ident0, ident1 } = expression ;
|
||
|
|
|
||
|
|
module main ;
|
||
|
|
|
||
|
|
wire a;
|
||
|
|
wire [30:0] b;
|
||
|
|
wire [14:0] c;
|
||
|
|
|
||
|
|
reg [31:0] val;
|
||
|
|
reg error;
|
||
|
|
|
||
|
|
assign {b,a} = val; // full variable
|
||
|
|
assign {c,a} = val[31:16]; // Top portion bit select
|
||
|
|
|
||
|
|
initial
|
||
|
|
begin
|
||
|
|
error = 0;
|
||
|
|
if(a != 1'bx)
|
||
|
|
begin
|
||
|
|
$display("FAILED - assign 3.2B assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
if(b != 31'bx)
|
||
|
|
begin
|
||
|
|
$display("FAILED - assign 3.2B assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
if(c != 14'bx)
|
||
|
|
begin
|
||
|
|
$display("FAILED - assign 3.2B assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
#1 ;
|
||
|
|
val = 32'h87654321;
|
||
|
|
#1 ;
|
||
|
|
if(a != 1'b1)
|
||
|
|
begin
|
||
|
|
$display("FAILED - 3.2A assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
if(b != (32'h87654321) >> 1)
|
||
|
|
begin
|
||
|
|
$display("FAILED - 3.2A assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
if(c != (16'h8765) >> 1)
|
||
|
|
begin
|
||
|
|
$display("FAILED - 3.2A assign ident = expr");
|
||
|
|
error = 1;
|
||
|
|
end
|
||
|
|
if(error == 0)
|
||
|
|
$display("PASSED");
|
||
|
|
|
||
|
|
$finish ;
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
endmodule
|