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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.
`timescale 1 ns / 1 ns
// Description: Simple Execution Unit
//
//*****************************************************************************
`include "tri_a2o.vh"
module xu1(
//-------------------------------------------------------------------
// Clocks & Power
//-------------------------------------------------------------------
inout vdd,
inout gnd,
input clk,
input rst,
//-------------------------------------------------------------------
// Pervasive
//-------------------------------------------------------------------
input d_mode_dc,
input delay_lclkr_dc,
input mpw1_dc_b,
input mpw2_dc_b,
input func_sl_force,
input func_sl_thold_0_b,
input sg_0,
input scan_in,
output scan_out,
output xu1_pc_ram_done,
output [64-`GPR_WIDTH:63] xu1_pc_ram_data,
input xu0_xu1_ex3_act,
input lq_xu_ex5_act,
//-------------------------------------------------------------------
// Interface with SPR
//-------------------------------------------------------------------
input [0:`THREADS-1] spr_msr_cm, // 0: 32 bit mode, 1: 64 bit mode
//-------------------------------------------------------------------
// Interface with CP
//-------------------------------------------------------------------
input [0:`THREADS-1] cp_flush,
//-------------------------------------------------------------------
// Interface with RV
//-------------------------------------------------------------------
input [0:`THREADS-1] rv_xu1_vld,
input rv_xu1_s1_v,
input rv_xu1_s2_v,
input rv_xu1_s3_v,
input [0:31] rv_xu1_ex0_instr,
input [0:`ITAG_SIZE_ENC-1] rv_xu1_ex0_itag,
input rv_xu1_ex0_isstore,
input [1:1] rv_xu1_ex0_ucode,
input rv_xu1_ex0_t1_v,
input [0:`GPR_POOL_ENC-1] rv_xu1_ex0_t1_p,
input rv_xu1_ex0_t2_v,
input [0:`GPR_POOL_ENC-1] rv_xu1_ex0_t2_p,
input rv_xu1_ex0_t3_v,
input [0:`GPR_POOL_ENC-1] rv_xu1_ex0_t3_p,
input rv_xu1_ex0_s1_v,
input [0:2] rv_xu1_ex0_s3_t,
input [0:`THREADS-1] rv_xu1_ex0_spec_flush,
input [0:`THREADS-1] rv_xu1_ex1_spec_flush,
input [0:`THREADS-1] rv_xu1_ex2_spec_flush,
//-------------------------------------------------------------------
// Interface with Bypass Controller
//-------------------------------------------------------------------
input [1:11] rv_xu1_s1_fxu0_sel,
input [1:11] rv_xu1_s2_fxu0_sel,
input [2:11] rv_xu1_s3_fxu0_sel,
input [1:6] rv_xu1_s1_fxu1_sel,
input [1:6] rv_xu1_s2_fxu1_sel,
input [2:6] rv_xu1_s3_fxu1_sel,
input [4:8] rv_xu1_s1_lq_sel,
input [4:8] rv_xu1_s2_lq_sel,
input [4:8] rv_xu1_s3_lq_sel,
input [2:3] rv_xu1_s1_rel_sel,
input [2:3] rv_xu1_s2_rel_sel,
//-------------------------------------------------------------------
// Interface with LQ
//-------------------------------------------------------------------
output [0:`THREADS-1] xu1_lq_ex2_stq_val,
output [0:`ITAG_SIZE_ENC-1] xu1_lq_ex2_stq_itag,
output [1:4] xu1_lq_ex2_stq_size,
output xu1_lq_ex3_illeg_lswx,
output xu1_lq_ex3_strg_noop,
output [(64-`GPR_WIDTH)/8:7] xu1_lq_ex2_stq_dvc1_cmp,
output [(64-`GPR_WIDTH)/8:7] xu1_lq_ex2_stq_dvc2_cmp,
//-------------------------------------------------------------------
// Interface with IU
//-------------------------------------------------------------------
output [0:`THREADS-1] xu1_iu_execute_vld,
output [0:`ITAG_SIZE_ENC-1] xu1_iu_itag,
output [0:`THREADS-1] xu_iu_ucode_xer_val,
output [3:9] xu_iu_ucode_xer,
output xu1_rv_ex2_s1_abort,
output xu1_rv_ex2_s2_abort,
output xu1_rv_ex2_s3_abort,
//-------------------------------------------------------------------
// Bypass Inputs
//-------------------------------------------------------------------
// Regfile Data
input [64-`GPR_WIDTH:63] gpr_xu1_ex1_r1d,
input [64-`GPR_WIDTH:63] gpr_xu1_ex1_r2d,
input [0:9] xer_xu1_ex1_r3d,
input [0:3] cr_xu1_ex1_r3d,
// External Bypass
input xu0_xu1_ex2_abort,
input xu0_xu1_ex6_abort,
input lq_xu_ex5_abort,
input [64-`GPR_WIDTH:63] xu0_xu1_ex2_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex3_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex4_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex5_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex6_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex7_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex8_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex6_lq_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex7_lq_rt,
input [64-`GPR_WIDTH:63] xu0_xu1_ex8_lq_rt,
input [64-`GPR_WIDTH:63] lq_xu_ex5_rt,
input [64-`GPR_WIDTH:63] lq_xu_rel_rt,
input lq_xu_rel_act,
// CR
input [0:3] lq_xu_ex5_cr,
input [0:3] xu0_xu1_ex3_cr,
input [0:3] xu0_xu1_ex4_cr,
input [0:3] xu0_xu1_ex6_cr,
// XER
input [0:9] xu0_xu1_ex3_xer,
input [0:9] xu0_xu1_ex4_xer,
input [0:9] xu0_xu1_ex6_xer,
//-------------------------------------------------------------------
// Bypass Outputs
//-------------------------------------------------------------------
output xu1_xu0_ex3_act,
output xu1_xu0_ex2_abort,
output xu1_lq_ex3_abort,
output [64-`GPR_WIDTH:63] xu1_xu0_ex2_rt,
output [64-`GPR_WIDTH:63] xu1_xu0_ex3_rt,
output [64-`GPR_WIDTH:63] xu1_xu0_ex4_rt,
output [64-`GPR_WIDTH:63] xu1_xu0_ex5_rt,
output [64-`GPR_WIDTH:63] xu1_lq_ex3_rt,
// CR
output [0:3] xu1_xu0_ex3_cr,
// XER
output [0:9] xu1_xu0_ex3_xer,
//-------------------------------------------------------------------
// Interface with Regfiles
//-------------------------------------------------------------------
output xu1_gpr_ex3_we,
output [0:`GPR_POOL_ENC+`THREADS_POOL_ENC-1] xu1_gpr_ex3_wa,
output [64-`GPR_WIDTH:65+`GPR_WIDTH/8] xu1_gpr_ex3_wd,
output xu1_xer_ex3_we,
output [0:`XER_POOL_ENC+`THREADS_POOL_ENC-1] xu1_xer_ex3_wa,
output [0:9] xu1_xer_ex3_w0d,
output xu1_cr_ex3_we,
output [0:`CR_POOL_ENC+`THREADS_POOL_ENC-1] xu1_cr_ex3_wa,
output [0:3] xu1_cr_ex3_w0d,
input [0:`THREADS-1] pc_xu_ram_active,
`ifndef THREADS1
input [64-`GPR_WIDTH:63] spr_dvc1_t1,
input [64-`GPR_WIDTH:63] spr_dvc2_t1,
`endif
input [64-`GPR_WIDTH:63] spr_dvc1_t0,
input [64-`GPR_WIDTH:63] spr_dvc2_t0,
// Debug
input [0:10] pc_xu_debug_mux_ctrls,
input [0:31] xu1_debug_bus_in,
output [0:31] xu1_debug_bus_out,
input [0:3] xu1_coretrace_ctrls_in,
output [0:3] xu1_coretrace_ctrls_out
);
//!! Bugspray Include: xu1_byp;
localparam scan_right = 3;
wire [0:scan_right-1] siv;
wire [0:scan_right-1] sov;
// Signals
wire byp_dec_ex2_abort;
wire dec_byp_ex0_act;
wire [64-`GPR_WIDTH:63] dec_byp_ex1_imm;
wire [24:25] dec_byp_ex1_instr;
wire dec_byp_ex0_rs2_sel_imm;
wire dec_byp_ex0_rs1_sel_zero;
wire [0:`THREADS-1] dec_byp_ex2_tid;
wire [(64-`GPR_WIDTH)/8:7] dec_byp_ex2_dvc_mask;
wire dec_alu_ex1_act;
wire [0:31] dec_alu_ex1_instr;
wire dec_alu_ex1_sel_isel;
wire [0:`GPR_WIDTH/8-1] dec_alu_ex1_add_rs1_inv;
wire [0:1] dec_alu_ex2_add_ci_sel;
wire dec_alu_ex1_sel_trap;
wire dec_alu_ex1_sel_cmpl;
wire dec_alu_ex1_sel_cmp;
wire dec_alu_ex1_msb_64b_sel;
wire dec_alu_ex1_xer_ov_en;
wire dec_alu_ex1_xer_ca_en;
wire [64-`GPR_WIDTH:63] alu_byp_ex2_add_rt;
wire [64-`GPR_WIDTH:63] alu_byp_ex3_rt;
wire [0:3] alu_byp_ex3_cr;
wire [0:9] alu_byp_ex3_xer;
wire [64-`GPR_WIDTH:63] byp_alu_ex2_rs1;
wire [64-`GPR_WIDTH:63] byp_alu_ex2_rs2;
wire byp_alu_ex2_cr_bit;
wire [0:9] byp_alu_ex2_xer;
wire [3:9] byp_dec_ex2_xer;
assign xu1_debug_bus_out = xu1_debug_bus_in;
assign xu1_coretrace_ctrls_out = xu1_coretrace_ctrls_in;
xu_alu alu(
.clk(clk),
.rst(rst),
.vdd(vdd),
.gnd(gnd),
.d_mode_dc(d_mode_dc),
.delay_lclkr_dc(delay_lclkr_dc),
.mpw1_dc_b(mpw1_dc_b),
.mpw2_dc_b(mpw2_dc_b),
.func_sl_force(func_sl_force),
.func_sl_thold_0_b(func_sl_thold_0_b),
.sg_0(sg_0),
.scan_in(siv[0]),
.scan_out(sov[0]),
.dec_alu_ex1_act(dec_alu_ex1_act),
.dec_alu_ex1_instr(dec_alu_ex1_instr),
.dec_alu_ex1_sel_isel(dec_alu_ex1_sel_isel),
.dec_alu_ex1_add_rs1_inv(dec_alu_ex1_add_rs1_inv),
.dec_alu_ex2_add_ci_sel(dec_alu_ex2_add_ci_sel),
.dec_alu_ex1_sel_trap(dec_alu_ex1_sel_trap),
.dec_alu_ex1_sel_cmpl(dec_alu_ex1_sel_cmpl),
.dec_alu_ex1_sel_cmp(dec_alu_ex1_sel_cmp),
.dec_alu_ex1_msb_64b_sel(dec_alu_ex1_msb_64b_sel),
.dec_alu_ex1_xer_ov_en(dec_alu_ex1_xer_ov_en),
.dec_alu_ex1_xer_ca_en(dec_alu_ex1_xer_ca_en),
.byp_alu_ex2_rs1(byp_alu_ex2_rs1),
.byp_alu_ex2_rs2(byp_alu_ex2_rs2),
.byp_alu_ex2_cr_bit(byp_alu_ex2_cr_bit),
.byp_alu_ex2_xer(byp_alu_ex2_xer),
.alu_byp_ex2_add_rt(alu_byp_ex2_add_rt),
.alu_byp_ex3_rt(alu_byp_ex3_rt),
.alu_byp_ex3_cr(alu_byp_ex3_cr),
.alu_byp_ex3_xer(alu_byp_ex3_xer),
.alu_dec_ex3_trap_val()
);
xu1_byp byp(
.clk(clk),
.rst(rst),
.vdd(vdd),
.gnd(gnd),
.d_mode_dc(d_mode_dc),
.delay_lclkr_dc(delay_lclkr_dc),
.mpw1_dc_b(mpw1_dc_b),
.mpw2_dc_b(mpw2_dc_b),
.func_sl_force(func_sl_force),
.func_sl_thold_0_b(func_sl_thold_0_b),
.sg_0(sg_0),
.scan_in(siv[1]),
.scan_out(sov[1]),
.dec_byp_ex0_act(dec_byp_ex0_act),
.byp_dec_ex2_abort(byp_dec_ex2_abort),
.xu0_xu1_ex3_act(xu0_xu1_ex3_act),
.lq_xu_ex5_act(lq_xu_ex5_act),
.dec_byp_ex1_imm(dec_byp_ex1_imm),
.dec_byp_ex1_instr(dec_byp_ex1_instr),
.dec_byp_ex0_rs2_sel_imm(dec_byp_ex0_rs2_sel_imm),
.dec_byp_ex0_rs1_sel_zero(dec_byp_ex0_rs1_sel_zero),
.dec_byp_ex2_tid(dec_byp_ex2_tid),
.dec_byp_ex2_dvc_mask(dec_byp_ex2_dvc_mask),
.rv_xu1_s1_v(rv_xu1_s1_v),
.rv_xu1_s2_v(rv_xu1_s2_v),
.rv_xu1_s3_v(rv_xu1_s3_v),
.rv_xu1_s1_fxu0_sel(rv_xu1_s1_fxu0_sel),
.rv_xu1_s2_fxu0_sel(rv_xu1_s2_fxu0_sel),
.rv_xu1_s3_fxu0_sel(rv_xu1_s3_fxu0_sel),
.rv_xu1_s1_fxu1_sel(rv_xu1_s1_fxu1_sel),
.rv_xu1_s2_fxu1_sel(rv_xu1_s2_fxu1_sel),
.rv_xu1_s3_fxu1_sel(rv_xu1_s3_fxu1_sel),
.rv_xu1_s1_lq_sel(rv_xu1_s1_lq_sel),
.rv_xu1_s2_lq_sel(rv_xu1_s2_lq_sel),
.rv_xu1_s3_lq_sel(rv_xu1_s3_lq_sel),
.rv_xu1_s1_rel_sel(rv_xu1_s1_rel_sel),
.rv_xu1_s2_rel_sel(rv_xu1_s2_rel_sel),
.gpr_xu1_ex1_r1d(gpr_xu1_ex1_r1d),
.gpr_xu1_ex1_r2d(gpr_xu1_ex1_r2d),
.xer_xu1_ex1_r3d(xer_xu1_ex1_r3d),
.cr_xu1_ex1_r3d(cr_xu1_ex1_r3d),
.xu0_xu1_ex2_abort(xu0_xu1_ex2_abort),
.xu0_xu1_ex6_abort(xu0_xu1_ex6_abort),
.xu0_xu1_ex2_rt(xu0_xu1_ex2_rt),
.xu0_xu1_ex3_rt(xu0_xu1_ex3_rt),
.xu0_xu1_ex4_rt(xu0_xu1_ex4_rt),
.xu0_xu1_ex5_rt(xu0_xu1_ex5_rt),
.xu0_xu1_ex6_rt(xu0_xu1_ex6_rt),
.xu0_xu1_ex7_rt(xu0_xu1_ex7_rt),
.xu0_xu1_ex8_rt(xu0_xu1_ex8_rt),
.xu0_xu1_ex6_lq_rt(xu0_xu1_ex6_lq_rt),
.xu0_xu1_ex7_lq_rt(xu0_xu1_ex7_lq_rt),
.xu0_xu1_ex8_lq_rt(xu0_xu1_ex8_lq_rt),
.lq_xu_ex5_abort(lq_xu_ex5_abort),
.lq_xu_ex5_rt(lq_xu_ex5_rt),
.lq_xu_rel_act(lq_xu_rel_act),
.lq_xu_rel_rt(lq_xu_rel_rt),
.lq_xu_ex5_cr(lq_xu_ex5_cr),
.xu0_xu1_ex3_cr(xu0_xu1_ex3_cr),
.xu0_xu1_ex4_cr(xu0_xu1_ex4_cr),
.xu0_xu1_ex6_cr(xu0_xu1_ex6_cr),
.xu0_xu1_ex3_xer(xu0_xu1_ex3_xer),
.xu0_xu1_ex4_xer(xu0_xu1_ex4_xer),
.xu0_xu1_ex6_xer(xu0_xu1_ex6_xer),
.alu_byp_ex2_add_rt(alu_byp_ex2_add_rt),
.alu_byp_ex3_rt(alu_byp_ex3_rt),
.alu_byp_ex3_cr(alu_byp_ex3_cr),
.alu_byp_ex3_xer(alu_byp_ex3_xer),
.xu1_xu0_ex2_abort(xu1_xu0_ex2_abort),
.xu1_lq_ex3_abort(xu1_lq_ex3_abort),
.xu1_xu0_ex2_rt(xu1_xu0_ex2_rt),
.xu1_xu0_ex3_rt(xu1_xu0_ex3_rt),
.xu1_xu0_ex4_rt(xu1_xu0_ex4_rt),
.xu1_xu0_ex5_rt(xu1_xu0_ex5_rt),
.xu1_lq_ex3_rt(xu1_lq_ex3_rt),
.xu1_pc_ram_data(xu1_pc_ram_data),
.xu1_xu0_ex3_cr(xu1_xu0_ex3_cr),
.xu1_xu0_ex3_xer(xu1_xu0_ex3_xer),
.byp_alu_ex2_rs1(byp_alu_ex2_rs1),
.byp_alu_ex2_rs2(byp_alu_ex2_rs2),
.byp_alu_ex2_cr_bit(byp_alu_ex2_cr_bit),
.byp_alu_ex2_xer(byp_alu_ex2_xer),
.byp_dec_ex2_xer(byp_dec_ex2_xer),
.xu_iu_ucode_xer(xu_iu_ucode_xer),
.xu1_rv_ex2_s1_abort(xu1_rv_ex2_s1_abort),
.xu1_rv_ex2_s2_abort(xu1_rv_ex2_s2_abort),
.xu1_rv_ex2_s3_abort(xu1_rv_ex2_s3_abort),
.xu1_gpr_ex3_wd(xu1_gpr_ex3_wd),
.xu1_xer_ex3_w0d(xu1_xer_ex3_w0d),
.xu1_cr_ex3_w0d(xu1_cr_ex3_w0d),
.xu1_lq_ex2_stq_dvc1_cmp(xu1_lq_ex2_stq_dvc1_cmp),
.xu1_lq_ex2_stq_dvc2_cmp(xu1_lq_ex2_stq_dvc2_cmp),
`ifndef THREADS1
.spr_dvc1_t1(spr_dvc1_t1),
.spr_dvc2_t1(spr_dvc2_t1),
`endif
.spr_dvc1_t0(spr_dvc1_t0),
.spr_dvc2_t0(spr_dvc2_t0)
);
xu1_dec dec(
.clk(clk),
.rst(rst),
.vdd(vdd),
.gnd(gnd),
.d_mode_dc(d_mode_dc),
.delay_lclkr_dc(delay_lclkr_dc),
.mpw1_dc_b(mpw1_dc_b),
.mpw2_dc_b(mpw2_dc_b),
.func_sl_force(func_sl_force),
.func_sl_thold_0_b(func_sl_thold_0_b),
.sg_0(sg_0),
.scan_in(siv[2]),
.scan_out(sov[2]),
.spr_msr_cm(spr_msr_cm), // 0=> 0,
.cp_flush(cp_flush),
.rv_xu1_vld(rv_xu1_vld),
.rv_xu1_ex0_instr(rv_xu1_ex0_instr),
.rv_xu1_ex0_itag(rv_xu1_ex0_itag),
.rv_xu1_ex0_isstore(rv_xu1_ex0_isstore),
.rv_xu1_ex0_ucode(rv_xu1_ex0_ucode),
.rv_xu1_ex0_t1_v(rv_xu1_ex0_t1_v),
.rv_xu1_ex0_t1_p(rv_xu1_ex0_t1_p),
.rv_xu1_ex0_t2_v(rv_xu1_ex0_t2_v),
.rv_xu1_ex0_t2_p(rv_xu1_ex0_t2_p),
.rv_xu1_ex0_t3_v(rv_xu1_ex0_t3_v),
.rv_xu1_ex0_t3_p(rv_xu1_ex0_t3_p),
.rv_xu1_ex0_s1_v(rv_xu1_ex0_s1_v),
.rv_xu1_ex0_s3_t(rv_xu1_ex0_s3_t),
.rv_xu1_ex0_spec_flush(rv_xu1_ex0_spec_flush),
.rv_xu1_ex1_spec_flush(rv_xu1_ex1_spec_flush),
.rv_xu1_ex2_spec_flush(rv_xu1_ex2_spec_flush),
.xu1_lq_ex2_stq_val(xu1_lq_ex2_stq_val),
.xu1_lq_ex2_stq_itag(xu1_lq_ex2_stq_itag),
.xu1_lq_ex2_stq_size(xu1_lq_ex2_stq_size),
.xu1_lq_ex3_illeg_lswx(xu1_lq_ex3_illeg_lswx),
.xu1_lq_ex3_strg_noop(xu1_lq_ex3_strg_noop),
.xu1_iu_execute_vld(xu1_iu_execute_vld),
.xu1_iu_itag(xu1_iu_itag),
.xu_iu_ucode_xer_val(xu_iu_ucode_xer_val),
.xu1_pc_ram_done(xu1_pc_ram_done),
.dec_alu_ex1_act(dec_alu_ex1_act),
.dec_alu_ex1_instr(dec_alu_ex1_instr),
.dec_alu_ex1_sel_isel(dec_alu_ex1_sel_isel),
.dec_alu_ex1_add_rs1_inv(dec_alu_ex1_add_rs1_inv),
.dec_alu_ex2_add_ci_sel(dec_alu_ex2_add_ci_sel),
.dec_alu_ex1_sel_trap(dec_alu_ex1_sel_trap),
.dec_alu_ex1_sel_cmpl(dec_alu_ex1_sel_cmpl),
.dec_alu_ex1_sel_cmp(dec_alu_ex1_sel_cmp),
.dec_alu_ex1_msb_64b_sel(dec_alu_ex1_msb_64b_sel),
.dec_alu_ex1_xer_ov_en(dec_alu_ex1_xer_ov_en),
.dec_alu_ex1_xer_ca_en(dec_alu_ex1_xer_ca_en),
.xu1_xu0_ex3_act(xu1_xu0_ex3_act),
.dec_byp_ex0_act(dec_byp_ex0_act),
.byp_dec_ex2_abort(byp_dec_ex2_abort),
.dec_byp_ex1_imm(dec_byp_ex1_imm),
.dec_byp_ex1_instr(dec_byp_ex1_instr),
.dec_byp_ex0_rs2_sel_imm(dec_byp_ex0_rs2_sel_imm),
.dec_byp_ex0_rs1_sel_zero(dec_byp_ex0_rs1_sel_zero),
.dec_byp_ex2_tid(dec_byp_ex2_tid),
.dec_byp_ex2_dvc_mask(dec_byp_ex2_dvc_mask),
.byp_dec_ex2_xer(byp_dec_ex2_xer),
.xu1_gpr_ex3_we(xu1_gpr_ex3_we),
.xu1_gpr_ex3_wa(xu1_gpr_ex3_wa),
.xu1_xer_ex3_we(xu1_xer_ex3_we),
.xu1_xer_ex3_wa(xu1_xer_ex3_wa),
.xu1_cr_ex3_we(xu1_cr_ex3_we),
.xu1_cr_ex3_wa(xu1_cr_ex3_wa),
.pc_xu_ram_active(pc_xu_ram_active)
);
assign siv[0:scan_right-1] = {sov[1:scan_right-1], scan_in};
assign scan_out = sov[0];
endmodule