mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-12-02 04:49:44 +00:00
46 lines
911 B
Verilog
46 lines
911 B
Verilog
// DESCRIPTION: Verilator: Verilog Test module
|
|
//
|
|
// This file ONLY is placed under the Creative Commons Public Domain, for
|
|
// any use, without warranty, 2003 by Wilson Snyder.
|
|
// SPDX-License-Identifier: CC0-1.0
|
|
|
|
module t (clk);
|
|
input clk;
|
|
|
|
reg [43:0] mi;
|
|
wire [31:0] mo;
|
|
muxtop um ( mi, mo);
|
|
|
|
integer cyc; initial cyc=1;
|
|
always @ (posedge clk) begin
|
|
if (cyc!=0) begin
|
|
cyc <= cyc + 1;
|
|
if (cyc==1) begin
|
|
mi <= 44'h1234567890;
|
|
end
|
|
if (cyc==3) begin
|
|
if (mo !== 32'h12345678) $stop;
|
|
$write("*-* All Finished *-*\n");
|
|
$finish;
|
|
end
|
|
end
|
|
end
|
|
|
|
endmodule
|
|
|
|
module muxtop (
|
|
input [ 43:0 ] i,
|
|
output reg [ 31:0 ] o
|
|
);
|
|
|
|
always @ ( i[43:0] ) // Verify we ignore ranges on always statement sense lists
|
|
o = MUX( i[39:0] );
|
|
|
|
function [31:0] MUX;
|
|
input [39:0] XX ;
|
|
begin
|
|
MUX = XX[39:8];
|
|
end
|
|
endfunction
|
|
endmodule
|