blob: 5f3961306ffda1ae93d74e195ffbd4c41aa64efc [file] [log] [blame]
/**
* Copyright 2020 The SkyWater PDK Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
`ifndef SKY130_FD_SC_HS__A2BB2O_TB_V
`define SKY130_FD_SC_HS__A2BB2O_TB_V
/**
* a2bb2o: 2-input AND, both inputs inverted, into first input, and
* 2-input AND into 2nd input of 2-input OR.
*
* X = ((!A1 & !A2) | (B1 & B2))
*
* Autogenerated test bench.
*
* WARNING: This file is autogenerated, do not modify directly!
*/
`timescale 1ns / 1ps
`default_nettype none
`include "sky130_fd_sc_hs__a2bb2o.v"
module top();
// Inputs are registered
reg A1_N;
reg A2_N;
reg B1;
reg B2;
reg VPWR;
reg VGND;
// Outputs are wires
wire X;
initial
begin
// Initial state is x for all inputs.
A1_N = 1'bX;
A2_N = 1'bX;
B1 = 1'bX;
B2 = 1'bX;
VGND = 1'bX;
VPWR = 1'bX;
#20 A1_N = 1'b0;
#40 A2_N = 1'b0;
#60 B1 = 1'b0;
#80 B2 = 1'b0;
#100 VGND = 1'b0;
#120 VPWR = 1'b0;
#140 A1_N = 1'b1;
#160 A2_N = 1'b1;
#180 B1 = 1'b1;
#200 B2 = 1'b1;
#220 VGND = 1'b1;
#240 VPWR = 1'b1;
#260 A1_N = 1'b0;
#280 A2_N = 1'b0;
#300 B1 = 1'b0;
#320 B2 = 1'b0;
#340 VGND = 1'b0;
#360 VPWR = 1'b0;
#380 VPWR = 1'b1;
#400 VGND = 1'b1;
#420 B2 = 1'b1;
#440 B1 = 1'b1;
#460 A2_N = 1'b1;
#480 A1_N = 1'b1;
#500 VPWR = 1'bx;
#520 VGND = 1'bx;
#540 B2 = 1'bx;
#560 B1 = 1'bx;
#580 A2_N = 1'bx;
#600 A1_N = 1'bx;
end
sky130_fd_sc_hs__a2bb2o dut (.A1_N(A1_N), .A2_N(A2_N), .B1(B1), .B2(B2), .VPWR(VPWR), .VGND(VGND), .X(X));
endmodule
`default_nettype wire
`endif // SKY130_FD_SC_HS__A2BB2O_TB_V