// © 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. `timescale 1 ns / 1 ns // *!**************************************************************** // *! FILE NAME : tri_fu_mul_bthrow.vhdl // *! DESCRIPTION : Booth Decode // *!**************************************************************** module tri_fu_mul_bthrow( x, s_neg, s_x, s_x2, hot_one, q ); input [0:53] x; input s_neg; // negate the row input s_x; // shift by 1 input s_x2; // shift by 2 output hot_one; // lsb term for row below output [0:54] q; // final output // ENTITY parameter tiup = 1'b1; parameter tidn = 1'b0; wire [0:54] left; wire unused; assign unused = left[0]; // dangling pin from edge bit ////############################################################### //# A row of the repeated part of the booth_mux row ////############################################################### tri_fu_mul_bthmux u00( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(tidn), //i-- ******** .right(left[1]), //i-- [n+1] .left(left[0]), //o-- [n] .q(q[0]) //o-- ); tri_fu_mul_bthmux u01( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[0]), //i-- [n-1] .right(left[2]), //i-- [n+1] .left(left[1]), //o-- [n] .q(q[1]) //o-- ); tri_fu_mul_bthmux u02( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[1]), //i-- .right(left[3]), //i-- .left(left[2]), //o-- .q(q[2]) //o-- ); tri_fu_mul_bthmux u03( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[2]), //i-- .right(left[4]), //i-- .left(left[3]), //o-- .q(q[3]) //o-- ); tri_fu_mul_bthmux u04( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[3]), //i-- .right(left[5]), //i-- .left(left[4]), //o-- .q(q[4]) //o-- ); tri_fu_mul_bthmux u05( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[4]), //i-- .right(left[6]), //i-- .left(left[5]), //o-- .q(q[5]) //o-- ); tri_fu_mul_bthmux u06( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[5]), //i-- .right(left[7]), //i-- .left(left[6]), //o-- .q(q[6]) //o-- ); tri_fu_mul_bthmux u07( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[6]), //i-- .right(left[8]), //i-- .left(left[7]), //o-- .q(q[7]) //o-- ); tri_fu_mul_bthmux u08( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[7]), //i-- .right(left[9]), //i-- .left(left[8]), //o-- .q(q[8]) //o-- ); tri_fu_mul_bthmux u09( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[8]), //i-- .right(left[10]), //i-- .left(left[9]), //o-- .q(q[9]) //o-- ); tri_fu_mul_bthmux u10( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[9]), //i-- .right(left[11]), //i-- .left(left[10]), //o-- .q(q[10]) //o-- ); tri_fu_mul_bthmux u11( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[10]), //i-- .right(left[12]), //i-- .left(left[11]), //o-- .q(q[11]) //o-- ); tri_fu_mul_bthmux u12( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[11]), //i-- .right(left[13]), //i-- .left(left[12]), //o-- .q(q[12]) //o-- ); tri_fu_mul_bthmux u13( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[12]), //i-- .right(left[14]), //i-- .left(left[13]), //o-- .q(q[13]) //o-- ); tri_fu_mul_bthmux u14( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[13]), //i-- .right(left[15]), //i-- .left(left[14]), //o-- .q(q[14]) //o-- ); tri_fu_mul_bthmux u15( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[14]), //i-- .right(left[16]), //i-- .left(left[15]), //o-- .q(q[15]) //o-- ); tri_fu_mul_bthmux u16( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[15]), //i-- .right(left[17]), //i-- .left(left[16]), //o-- .q(q[16]) //o-- ); tri_fu_mul_bthmux u17( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[16]), //i-- .right(left[18]), //i-- .left(left[17]), //o-- .q(q[17]) //o-- ); tri_fu_mul_bthmux u18( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[17]), //i-- .right(left[19]), //i-- .left(left[18]), //o-- .q(q[18]) //o-- ); tri_fu_mul_bthmux u19( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[18]), //i-- .right(left[20]), //i-- .left(left[19]), //o-- .q(q[19]) //o-- ); tri_fu_mul_bthmux u20( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[19]), //i-- .right(left[21]), //i-- .left(left[20]), //o-- .q(q[20]) //o-- ); tri_fu_mul_bthmux u21( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[20]), //i-- .right(left[22]), //i-- .left(left[21]), //o-- .q(q[21]) //o-- ); tri_fu_mul_bthmux u22( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[21]), //i-- .right(left[23]), //i-- .left(left[22]), //o-- .q(q[22]) //o-- ); tri_fu_mul_bthmux u23( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[22]), //i-- .right(left[24]), //i-- .left(left[23]), //o-- .q(q[23]) //o-- ); tri_fu_mul_bthmux u24( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[23]), //i-- .right(left[25]), //i-- .left(left[24]), //o-- .q(q[24]) //o-- ); tri_fu_mul_bthmux u25( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[24]), //i-- .right(left[26]), //i-- .left(left[25]), //o-- .q(q[25]) //o-- ); tri_fu_mul_bthmux u26( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[25]), //i-- .right(left[27]), //i-- .left(left[26]), //o-- .q(q[26]) //o-- ); tri_fu_mul_bthmux u27( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[26]), //i-- .right(left[28]), //i-- .left(left[27]), //o-- .q(q[27]) //o-- ); tri_fu_mul_bthmux u28( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[27]), //i-- .right(left[29]), //i-- .left(left[28]), //o-- .q(q[28]) //o-- ); tri_fu_mul_bthmux u29( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[28]), //i-- .right(left[30]), //i-- .left(left[29]), //o-- .q(q[29]) //o-- ); tri_fu_mul_bthmux u30( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[29]), //i-- .right(left[31]), //i-- .left(left[30]), //o-- .q(q[30]) //o-- ); tri_fu_mul_bthmux u31( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[30]), //i-- .right(left[32]), //i-- .left(left[31]), //o-- .q(q[31]) //o-- ); tri_fu_mul_bthmux u32( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[31]), //i-- .right(left[33]), //i-- .left(left[32]), //o-- .q(q[32]) //o-- ); tri_fu_mul_bthmux u33( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[32]), //i-- .right(left[34]), //i-- .left(left[33]), //o-- .q(q[33]) //o-- ); tri_fu_mul_bthmux u34( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[33]), //i-- .right(left[35]), //i-- .left(left[34]), //o-- .q(q[34]) //o-- ); tri_fu_mul_bthmux u35( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[34]), //i-- .right(left[36]), //i-- .left(left[35]), //o-- .q(q[35]) //o-- ); tri_fu_mul_bthmux u36( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[35]), //i-- .right(left[37]), //i-- .left(left[36]), //o-- .q(q[36]) //o-- ); tri_fu_mul_bthmux u37( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[36]), //i-- .right(left[38]), //i-- .left(left[37]), //o-- .q(q[37]) //o-- ); tri_fu_mul_bthmux u38( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[37]), //i-- .right(left[39]), //i-- .left(left[38]), //o-- .q(q[38]) //o-- ); tri_fu_mul_bthmux u39( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[38]), //i-- .right(left[40]), //i-- .left(left[39]), //o-- .q(q[39]) //o-- ); tri_fu_mul_bthmux u40( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[39]), //i-- .right(left[41]), //i-- .left(left[40]), //o-- .q(q[40]) //o-- ); tri_fu_mul_bthmux u41( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[40]), //i-- .right(left[42]), //i-- .left(left[41]), //o-- .q(q[41]) //o-- ); tri_fu_mul_bthmux u42( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[41]), //i-- .right(left[43]), //i-- .left(left[42]), //o-- .q(q[42]) //o-- ); tri_fu_mul_bthmux u43( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[42]), //i-- .right(left[44]), //i-- .left(left[43]), //o-- .q(q[43]) //o-- ); tri_fu_mul_bthmux u44( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[43]), //i-- .right(left[45]), //i-- .left(left[44]), //o-- .q(q[44]) //o-- ); tri_fu_mul_bthmux u45( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[44]), //i-- .right(left[46]), //i-- .left(left[45]), //o-- .q(q[45]) //o-- ); tri_fu_mul_bthmux u46( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[45]), //i-- .right(left[47]), //i-- .left(left[46]), //o-- .q(q[46]) //o-- ); tri_fu_mul_bthmux u47( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[46]), //i-- .right(left[48]), //i-- .left(left[47]), //o-- .q(q[47]) //o-- ); tri_fu_mul_bthmux u48( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[47]), //i-- .right(left[49]), //i-- .left(left[48]), //o-- .q(q[48]) //o-- ); tri_fu_mul_bthmux u49( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[48]), //i-- .right(left[50]), //i-- .left(left[49]), //o-- .q(q[49]) //o-- ); tri_fu_mul_bthmux u50( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[49]), //i-- .right(left[51]), //i-- .left(left[50]), //o-- .q(q[50]) //o-- ); tri_fu_mul_bthmux u51( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[50]), //i-- .right(left[52]), //i-- .left(left[51]), //o-- .q(q[51]) //o-- ); tri_fu_mul_bthmux u52( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[51]), //i-- .right(left[53]), //i-- .left(left[52]), //o-- .q(q[52]) //o-- ); tri_fu_mul_bthmux u53( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[52]), //i-- .right(left[54]), //i-- .left(left[53]), //o-- .q(q[53]) //o-- ); tri_fu_mul_bthmux u54( .sneg(s_neg), //i-- .sx(s_x), //i-- .sx2(s_x2), //i-- .x(x[53]), //i-- .right(s_neg), //i-- .left(left[54]), //o-- .q(q[54]) //o-- ); // For negate -A = !A + 1 ... this term is the plus 1. // this has same bit weight as LSB, so it jumps down a row to free spot in compressor tree. assign hot_one = (s_neg & (s_x | s_x2)); endmodule