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8bitworkshop/test/cli/verilog/t_interface_twod.v

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920 B
Verilog

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2013 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
interface ifc;
integer value;
modport i (output value);
modport o (input value);
endinterface
module t (/*AUTOARG*/
// Inputs
clk
);
input clk;
integer cyc=1;
ifc itop1a(),
itop1b();
wrapper c1 (.isuba(itop1a),
.isubb(itop1b),
.i_valuea(14),
.i_valueb(15));
always @ (posedge clk) begin
cyc <= cyc + 1;
if (cyc==20) begin
if (itop1a.value != 14) $stop;
if (itop1b.value != 15) $stop;
$write("*-* All Finished *-*\n");
$finish;
end
end
endmodule
module wrapper
(
ifc.i isuba, isubb,
input integer i_valuea, i_valueb
);
always @* begin
isuba.value = i_valuea;
isubb.value = i_valueb;
end
endmodule