/* $Id: aeMB2_exec.v,v 1.4 2008-04-26 17:57:43 sybreon Exp $
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/* $Id: aeMB2_exec.v,v 1.4 2008-04-26 17:57:43 sybreon Exp $
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**
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**
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** AEMB2 EDK 6.2 COMPATIBLE CORE
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** AEMB2 EDK 6.2 COMPATIBLE CORE
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** Copyright (C) 2004-2008 Shawn Tan <shawn.tan@aeste.net>
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** Copyright (C) 2004-2008 Shawn Tan <shawn.tan@aeste.net>
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**
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**
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** This file is part of AEMB.
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** This file is part of AEMB.
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**
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**
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** AEMB is free software: you can redistribute it and/or modify it
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** AEMB is free software: you can redistribute it and/or modify it
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** under the terms of the GNU Lesser General Public License as
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** under the terms of the GNU Lesser General Public License as
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** published by the Free Software Foundation, either version 3 of the
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** published by the Free Software Foundation, either version 3 of the
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** License, or (at your option) any later version.
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** License, or (at your option) any later version.
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**
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**
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** AEMB is distributed in the hope that it will be useful, but WITHOUT
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** AEMB is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** Public License for more details.
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** Public License for more details.
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**
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**
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** You should have received a copy of the GNU Lesser General Public
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** You should have received a copy of the GNU Lesser General Public
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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*/
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*/
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/**
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/**
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* Execution Units Wrapper
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* Execution Units Wrapper
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* @file aeMB2_exec.v
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* @file aeMB2_exec.v
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* Collection of all the execution units.
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* Collection of all the execution units.
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*/
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*/
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// 382@130
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// 382@130
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module aeMB2_exec (/*AUTOARG*/
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module aeMB2_exec (/*AUTOARG*/
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// Outputs
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// Outputs
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sfr_mx, mul_mx, msr_ex, mem_ex, bsf_mx, bpc_ex, alu_mx, alu_ex,
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sfr_mx, mul_mx, msr_ex, mem_ex, bsf_mx, bpc_ex, alu_mx, alu_ex,
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exc_ill,
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exc_ill,
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// Inputs
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// Inputs
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rd_of, ra_of, opd_of, opc_of, opb_of, opa_of, imm_of, grst, gpha,
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rpc_ex, rd_of, ra_of, opd_of, opc_of, opb_of, opa_of, imm_of, grst,
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gclk, dena
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gpha, gclk, exc_dwb, dena
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);
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);
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parameter AEMB_IWB = 32;
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parameter AEMB_IWB = 32;
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parameter AEMB_DWB = 32;
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parameter AEMB_DWB = 32;
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parameter AEMB_MUL = 1;
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parameter AEMB_MUL = 1;
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parameter AEMB_BSF = 1;
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parameter AEMB_BSF = 1;
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parameter AEMB_HTX = 1;
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parameter AEMB_HTX = 1;
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/*AUTOOUTPUT*/
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/*AUTOOUTPUT*/
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// Beginning of automatic outputs (from unused autoinst outputs)
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// Beginning of automatic outputs (from unused autoinst outputs)
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output [31:0] alu_ex; // From intu0 of aeMB2_intu.v
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output [31:0] alu_ex; // From intu0 of aeMB2_intu.v
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output [31:0] alu_mx; // From intu0 of aeMB2_intu.v
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output [31:0] alu_mx; // From intu0 of aeMB2_intu.v
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output [31:2] bpc_ex; // From intu0 of aeMB2_intu.v
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output [31:2] bpc_ex; // From intu0 of aeMB2_intu.v
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output [31:0] bsf_mx; // From bsft0 of aeMB2_bsft.v
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output [31:0] bsf_mx; // From bsft0 of aeMB2_bsft.v
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output [31:2] mem_ex; // From intu0 of aeMB2_intu.v
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output [31:2] mem_ex; // From intu0 of aeMB2_intu.v
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output [9:0] msr_ex; // From intu0 of aeMB2_intu.v
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output [9:0] msr_ex; // From intu0 of aeMB2_intu.v
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output [31:0] mul_mx; // From mult0 of aeMB2_mult.v
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output [31:0] mul_mx; // From mult0 of aeMB2_mult.v
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output [31:0] sfr_mx; // From intu0 of aeMB2_intu.v
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output [31:0] sfr_mx; // From intu0 of aeMB2_intu.v
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// End of automatics
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// End of automatics
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/*AUTOINPUT*/
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/*AUTOINPUT*/
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// Beginning of automatic inputs (from unused autoinst inputs)
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// Beginning of automatic inputs (from unused autoinst inputs)
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input dena; // To bsft0 of aeMB2_bsft.v, ...
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input dena; // To bsft0 of aeMB2_bsft.v, ...
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input [1:0] exc_dwb; // To intu0 of aeMB2_intu.v
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input gclk; // To bsft0 of aeMB2_bsft.v, ...
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input gclk; // To bsft0 of aeMB2_bsft.v, ...
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input gpha; // To bsft0 of aeMB2_bsft.v, ...
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input gpha; // To bsft0 of aeMB2_bsft.v, ...
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input grst; // To bsft0 of aeMB2_bsft.v, ...
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input grst; // To bsft0 of aeMB2_bsft.v, ...
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input [15:0] imm_of; // To bsft0 of aeMB2_bsft.v, ...
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input [15:0] imm_of; // To bsft0 of aeMB2_bsft.v, ...
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input [31:0] opa_of; // To bsft0 of aeMB2_bsft.v, ...
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input [31:0] opa_of; // To bsft0 of aeMB2_bsft.v, ...
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input [31:0] opb_of; // To bsft0 of aeMB2_bsft.v, ...
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input [31:0] opb_of; // To bsft0 of aeMB2_bsft.v, ...
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input [5:0] opc_of; // To bsft0 of aeMB2_bsft.v, ...
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input [5:0] opc_of; // To bsft0 of aeMB2_bsft.v, ...
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input [31:0] opd_of; // To intu0 of aeMB2_intu.v
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input [31:0] opd_of; // To intu0 of aeMB2_intu.v
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input [4:0] ra_of; // To intu0 of aeMB2_intu.v
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input [4:0] ra_of; // To intu0 of aeMB2_intu.v
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input [4:0] rd_of; // To intu0 of aeMB2_intu.v
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input [4:0] rd_of; // To intu0 of aeMB2_intu.v
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input [31:2] rpc_ex; // To intu0 of aeMB2_intu.v
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// End of automatics
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// End of automatics
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/*AUTOWIRE*/
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/*AUTOWIRE*/
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output exc_ill;
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output exc_ill;
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reg exc_ill; // illegal instruction exception
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reg exc_ill; // illegal instruction exception
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//TODO: OPTIMISE!
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//TODO: OPTIMISE!
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wire wILL =
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wire wILL =
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((opc_of[5:4] == 2'o1) & opc_of[2]) | // illegal extended arithmetic
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((opc_of[5:4] == 2'o1) & opc_of[2]) | // illegal extended arithmetic
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(&opc_of[5:4] & &opc_of[1:0]); // illegal LD/ST
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(&opc_of[5:4] & &opc_of[1:0]); // illegal LD/ST
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//(opc_of == 6'o23) | (opc_of == 6'o24) | (opc_of == 6'o25) | (opc_of == 6'o26) | opc_of == 6'o27) |
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//(opc_of == 6'o23) | (opc_of == 6'o24) | (opc_of == 6'o25) | (opc_of == 6'o26) | opc_of == 6'o27) |
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//(opc_of == 6'o32) | (opc_of == 6'o34) | (opc_of == 6'o35) | (opc_of == 6'o36) | opc_of == 6'o37) |
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//(opc_of == 6'o32) | (opc_of == 6'o34) | (opc_of == 6'o35) | (opc_of == 6'o36) | opc_of == 6'o37) |
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//(opc_of == 6'o63) | (opc_of == 6'o67) | (opc_of == 6'o73) | (opc_of == 6'o77); // illegal load/store
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//(opc_of == 6'o63) | (opc_of == 6'o67) | (opc_of == 6'o73) | (opc_of == 6'o77); // illegal load/store
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always @(posedge gclk)
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always @(posedge gclk)
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if (grst) begin
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if (grst) begin
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/*AUTORESET*/
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/*AUTORESET*/
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// Beginning of autoreset for uninitialized flops
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// Beginning of autoreset for uninitialized flops
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exc_ill <= 1'h0;
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exc_ill <= 1'h0;
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// End of automatics
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// End of automatics
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end else if (dena) begin
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end else if (dena) begin
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exc_ill <= #1 wILL;
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exc_ill <= #1 wILL;
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end
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end
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aeMB2_bsft
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aeMB2_bsft
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#(/*AUTOINSTPARAM*/
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#(/*AUTOINSTPARAM*/
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// Parameters
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// Parameters
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.AEMB_BSF (AEMB_BSF))
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.AEMB_BSF (AEMB_BSF))
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bsft0
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bsft0
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(/*AUTOINST*/
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(/*AUTOINST*/
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// Outputs
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// Outputs
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.bsf_mx (bsf_mx[31:0]),
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.bsf_mx (bsf_mx[31:0]),
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// Inputs
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// Inputs
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.opa_of (opa_of[31:0]),
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.opa_of (opa_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opc_of (opc_of[5:0]),
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.opc_of (opc_of[5:0]),
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.imm_of (imm_of[10:9]),
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.imm_of (imm_of[10:9]),
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.gclk (gclk),
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.gclk (gclk),
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.grst (grst),
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.grst (grst),
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.dena (dena),
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.dena (dena),
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.gpha (gpha));
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.gpha (gpha));
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aeMB2_mult
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aeMB2_mult
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#(/*AUTOINSTPARAM*/
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#(/*AUTOINSTPARAM*/
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// Parameters
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// Parameters
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.AEMB_MUL (AEMB_MUL))
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.AEMB_MUL (AEMB_MUL))
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mult0
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mult0
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(/*AUTOINST*/
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(/*AUTOINST*/
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// Outputs
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// Outputs
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.mul_mx (mul_mx[31:0]),
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.mul_mx (mul_mx[31:0]),
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// Inputs
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// Inputs
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.opa_of (opa_of[31:0]),
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.opa_of (opa_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opc_of (opc_of[5:0]),
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.opc_of (opc_of[5:0]),
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.gclk (gclk),
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.gclk (gclk),
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.grst (grst),
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.grst (grst),
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.dena (dena),
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.dena (dena),
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.gpha (gpha));
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.gpha (gpha));
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aeMB2_intu
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aeMB2_intu
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#(/*AUTOINSTPARAM*/
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#(/*AUTOINSTPARAM*/
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// Parameters
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// Parameters
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.AEMB_DWB (AEMB_DWB),
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.AEMB_DWB (AEMB_DWB),
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.AEMB_IWB (AEMB_IWB),
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.AEMB_IWB (AEMB_IWB),
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.AEMB_HTX (AEMB_HTX))
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.AEMB_HTX (AEMB_HTX))
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intu0
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intu0
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(/*AUTOINST*/
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(/*AUTOINST*/
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// Outputs
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// Outputs
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.mem_ex (mem_ex[31:2]),
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.mem_ex (mem_ex[31:2]),
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.bpc_ex (bpc_ex[31:2]),
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.bpc_ex (bpc_ex[31:2]),
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.alu_ex (alu_ex[31:0]),
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.alu_ex (alu_ex[31:0]),
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.alu_mx (alu_mx[31:0]),
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.alu_mx (alu_mx[31:0]),
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.msr_ex (msr_ex[9:0]),
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.msr_ex (msr_ex[9:0]),
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.sfr_mx (sfr_mx[31:0]),
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.sfr_mx (sfr_mx[31:0]),
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// Inputs
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// Inputs
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.exc_dwb (exc_dwb[1:0]),
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.exc_ill (exc_ill),
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.rpc_ex (rpc_ex[31:2]),
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.opc_of (opc_of[5:0]),
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.opc_of (opc_of[5:0]),
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.opa_of (opa_of[31:0]),
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.opa_of (opa_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opb_of (opb_of[31:0]),
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.opd_of (opd_of[31:0]),
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.opd_of (opd_of[31:0]),
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.imm_of (imm_of[15:0]),
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.imm_of (imm_of[15:0]),
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.rd_of (rd_of[4:0]),
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.rd_of (rd_of[4:0]),
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.ra_of (ra_of[4:0]),
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.ra_of (ra_of[4:0]),
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.gclk (gclk),
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.gclk (gclk),
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.grst (grst),
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.grst (grst),
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.dena (dena),
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.dena (dena),
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.gpha (gpha));
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.gpha (gpha));
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endmodule // aeMB2_exec
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endmodule // aeMB2_exec
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