| /* |
| * 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__NOR4B_BEHAVIORAL_V |
| `define SKY130_FD_SC_HS__NOR4B_BEHAVIORAL_V |
| |
| /** |
| * nor4b: 4-input NOR, first input inverted. |
| * |
| * Verilog simulation functional model. |
| */ |
| |
| `timescale 1ns / 1ps |
| `default_nettype none |
| |
| // Import sub cells. |
| `include "../u_vpwr_vgnd/sky130_fd_sc_hs__u_vpwr_vgnd.v" |
| |
| `celldefine |
| module sky130_fd_sc_hs__nor4b ( |
| Y , |
| A , |
| B , |
| C , |
| D_N , |
| VPWR, |
| VGND |
| ); |
| |
| // Module ports |
| output Y ; |
| input A ; |
| input B ; |
| input C ; |
| input D_N ; |
| input VPWR; |
| input VGND; |
| |
| // Local signals |
| wire DN not0_out ; |
| wire nor0_out_Y ; |
| wire u_vpwr_vgnd0_out_Y; |
| |
| // Name Output Other arguments |
| not not0 (not0_out , D_N ); |
| nor nor0 (nor0_out_Y , A, B, C, not0_out ); |
| sky130_fd_sc_hs__u_vpwr_vgnd u_vpwr_vgnd0 (u_vpwr_vgnd0_out_Y, nor0_out_Y, VPWR, VGND); |
| buf buf0 (Y , u_vpwr_vgnd0_out_Y ); |
| |
| endmodule |
| `endcelldefine |
| |
| `default_nettype wire |
| `endif // SKY130_FD_SC_HS__NOR4B_BEHAVIORAL_V |