You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

79 lines
2.5 KiB

2 years ago
// © IBM Corp. 2020
// Licensed under the Apache License, Version 2.0 (the "License"), as modified by
// the terms below; you may not use the files in this repository except in
// compliance with the License as modified.
// You may obtain a copy of the License at
// Modified Terms:
// 1) For the purpose of the patent license granted to you in Section 3 of the
// License, the "Work" hereby includes implementations of the work of authorship
// in physical form.
// 2) Notwithstanding any terms to the contrary in the License, any licenses
// necessary for implementation of the Work that are available from OpenPOWER
// via the Power ISA End User License Agreement (EULA) are explicitly excluded
// hereunder, and may be obtained from OpenPOWER under the terms and conditions
// of the EULA.
// Unless required by applicable law or agreed to in writing, the reference design
// 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.
// Additional rights, including the ability to physically implement a softcore that
// is compliant with the required sections of the Power ISA Specification, are
// available at no cost under the terms of the OpenPOWER Power ISA EULA, which can be
// obtained (along with the Power ISA) here:
// input phase is importent
// (change X (B) by switching xor/xnor )
`timescale 1 ns / 1 ns
`include "tri_a2o.vh"
module lq_agen_csmux(
input [0:7] sum_0; // after xor
input [0:7] sum_1;
input ci_b;
output [0:7] sum;
wire [0:7] sum0_b;
wire [0:7] sum1_b;
wire int_ci;
wire int_ci_t;
wire int_ci_b;
//assign int_ci = (~ci_b);
tri_inv int_ci_0 (.y(int_ci), .a(ci_b));
//assign int_ci_t = (~ci_b);
tri_inv int_ci_t_0 (.y(int_ci_t), .a(ci_b));
//assign int_ci_b = (~int_ci_t);
tri_inv int_ci_b_0 (.y(int_ci_b), .a(int_ci_t));
//assign sum0_b[0] = (~(sum_0[0] & int_ci_b));
tri_nand2 #(.WIDTH(8)) sum0_b_0 (.y(sum0_b[0:7]), .a(sum_0[0:7]), .b({8{int_ci_b}}));
//assign sum1_b[0] = (~(sum_1[0] & int_ci));
tri_nand2 #(.WIDTH(8)) sum1_b_0 (.y(sum1_b[0:7]), .a(sum_1[0:7]), .b({8{int_ci}}));
//assign sum[0] = (~(sum0_b[0] & sum1_b[0]));
tri_nand2 #(.WIDTH(8)) sum0 (.y(sum[0:7]), .a(sum0_b[0:7]), .b(sum1_b[0:7]));