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.
424 lines
7.4 KiB
Verilog
424 lines
7.4 KiB
Verilog
// © 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 http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// 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: https://openpowerfoundation.org.
|
|
|
|
// Description: XU Multiplier Top
|
|
//
|
|
//*****************************************************************************
|
|
|
|
`timescale 1 ns / 1 ns
|
|
|
|
module tri_st_mult_boothrow(
|
|
s_neg,
|
|
s_x,
|
|
s_x2,
|
|
sign_bit_adj,
|
|
x,
|
|
q,
|
|
hot_one
|
|
);
|
|
input s_neg; // negate the row
|
|
input s_x; // shift by 0
|
|
input s_x2; // shift by 1
|
|
input sign_bit_adj;
|
|
input [0:31] x; // input (multiplicand)
|
|
output [0:32] q; // final output
|
|
// lsb term for row below
|
|
output hot_one;
|
|
|
|
wire [1:32] left;
|
|
|
|
//-------------------------------------------------------------------
|
|
// Build the booth mux row bit by bit
|
|
//-------------------------------------------------------------------
|
|
|
|
tri_bthmx u00(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(sign_bit_adj),
|
|
.right(left[1]),
|
|
.left(),
|
|
.q(q[0])
|
|
);
|
|
|
|
|
|
tri_bthmx u01(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[0]),
|
|
.right(left[2]),
|
|
.left(left[1]),
|
|
.q(q[1])
|
|
);
|
|
|
|
|
|
tri_bthmx u02(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[1]),
|
|
.right(left[3]),
|
|
.left(left[2]),
|
|
.q(q[2])
|
|
);
|
|
|
|
|
|
tri_bthmx u03(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[2]),
|
|
.right(left[4]),
|
|
.left(left[3]),
|
|
.q(q[3])
|
|
);
|
|
|
|
|
|
tri_bthmx u04(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[3]),
|
|
.right(left[5]),
|
|
.left(left[4]),
|
|
.q(q[4])
|
|
);
|
|
|
|
|
|
tri_bthmx u05(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[4]),
|
|
.right(left[6]),
|
|
.left(left[5]),
|
|
.q(q[5])
|
|
);
|
|
|
|
|
|
tri_bthmx u06(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[5]),
|
|
.right(left[7]),
|
|
.left(left[6]),
|
|
.q(q[6])
|
|
);
|
|
|
|
|
|
tri_bthmx u07(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[6]),
|
|
.right(left[8]),
|
|
.left(left[7]),
|
|
.q(q[7])
|
|
);
|
|
|
|
|
|
tri_bthmx u08(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[7]),
|
|
.right(left[9]),
|
|
.left(left[8]),
|
|
.q(q[8])
|
|
);
|
|
|
|
|
|
tri_bthmx u09(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[8]),
|
|
.right(left[10]),
|
|
.left(left[9]),
|
|
.q(q[9])
|
|
);
|
|
|
|
|
|
tri_bthmx u10(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[9]),
|
|
.right(left[11]),
|
|
.left(left[10]),
|
|
.q(q[10])
|
|
);
|
|
|
|
|
|
tri_bthmx u11(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[10]),
|
|
.right(left[12]),
|
|
.left(left[11]),
|
|
.q(q[11])
|
|
);
|
|
|
|
|
|
tri_bthmx u12(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[11]),
|
|
.right(left[13]),
|
|
.left(left[12]),
|
|
.q(q[12])
|
|
);
|
|
|
|
|
|
tri_bthmx u13(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[12]),
|
|
.right(left[14]),
|
|
.left(left[13]),
|
|
.q(q[13])
|
|
);
|
|
|
|
|
|
tri_bthmx u14(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[13]),
|
|
.right(left[15]),
|
|
.left(left[14]),
|
|
.q(q[14])
|
|
);
|
|
|
|
|
|
tri_bthmx u15(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[14]),
|
|
.right(left[16]),
|
|
.left(left[15]),
|
|
.q(q[15])
|
|
);
|
|
|
|
|
|
tri_bthmx u16(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[15]),
|
|
.right(left[17]),
|
|
.left(left[16]),
|
|
.q(q[16])
|
|
);
|
|
|
|
|
|
tri_bthmx u17(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[16]),
|
|
.right(left[18]),
|
|
.left(left[17]),
|
|
.q(q[17])
|
|
);
|
|
|
|
|
|
tri_bthmx u18(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[17]),
|
|
.right(left[19]),
|
|
.left(left[18]),
|
|
.q(q[18])
|
|
);
|
|
|
|
|
|
tri_bthmx u19(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[18]),
|
|
.right(left[20]),
|
|
.left(left[19]),
|
|
.q(q[19])
|
|
);
|
|
|
|
|
|
tri_bthmx u20(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[19]),
|
|
.right(left[21]),
|
|
.left(left[20]),
|
|
.q(q[20])
|
|
);
|
|
|
|
|
|
tri_bthmx u21(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[20]),
|
|
.right(left[22]),
|
|
.left(left[21]),
|
|
.q(q[21])
|
|
);
|
|
|
|
|
|
tri_bthmx u22(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[21]),
|
|
.right(left[23]),
|
|
.left(left[22]),
|
|
.q(q[22])
|
|
);
|
|
|
|
|
|
tri_bthmx u23(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[22]),
|
|
.right(left[24]),
|
|
.left(left[23]),
|
|
.q(q[23])
|
|
);
|
|
|
|
|
|
tri_bthmx u24(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[23]),
|
|
.right(left[25]),
|
|
.left(left[24]),
|
|
.q(q[24])
|
|
);
|
|
|
|
|
|
tri_bthmx u25(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[24]),
|
|
.right(left[26]),
|
|
.left(left[25]),
|
|
.q(q[25])
|
|
);
|
|
|
|
|
|
tri_bthmx u26(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[25]),
|
|
.right(left[27]),
|
|
.left(left[26]),
|
|
.q(q[26])
|
|
);
|
|
|
|
|
|
tri_bthmx u27(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[26]),
|
|
.right(left[28]),
|
|
.left(left[27]),
|
|
.q(q[27])
|
|
);
|
|
|
|
|
|
tri_bthmx u28(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[27]),
|
|
.right(left[29]),
|
|
.left(left[28]),
|
|
.q(q[28])
|
|
);
|
|
|
|
|
|
tri_bthmx u29(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[28]),
|
|
.right(left[30]),
|
|
.left(left[29]),
|
|
.q(q[29])
|
|
);
|
|
|
|
|
|
tri_bthmx u30(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[29]),
|
|
.right(left[31]),
|
|
.left(left[30]),
|
|
.q(q[30])
|
|
);
|
|
|
|
|
|
tri_bthmx u31(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[30]),
|
|
.right(left[32]),
|
|
.left(left[31]),
|
|
.q(q[31])
|
|
);
|
|
|
|
|
|
tri_bthmx u32(
|
|
.sneg(s_neg),
|
|
.sx(s_x),
|
|
.sx2(s_x2),
|
|
.x(x[31]),
|
|
.right(s_neg),
|
|
.left(left[32]),
|
|
.q(q[32])
|
|
);
|
|
|
|
assign hot_one = s_neg & (s_x | s_x2);
|
|
|
|
endmodule
|