1 files changed, 0 insertions, 177 deletions
diff --git a/rv64cpu/tb/unit/tb_id_ex_reg.cc b/rv64cpu/tb/unit/tb_id_ex_reg.cc
deleted file mode 100644
index d9cc329..0000000
--- a/rv64cpu/tb/unit/tb_id_ex_reg.cc
+++ /dev/null
@@ -1,177 +0,0 @@
-//     Richard CPU
-//     Copyright (C) 2026  Richard Qin
-//     This program is free software: you can redistribute it and/or modify
-//     it under the terms of the GNU General Public License as published by
-//     the Free Software Foundation, either version 3 of the License, or
-//     (at your option) any later version.
-
-//     This program is distributed in the hope that it will be useful,
-//     but WITHOUT ANY WARRANTY; without even the implied warranty of
-//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-//     GNU General Public License for more details.
-
-//     You should have received a copy of the GNU General Public License
-//     along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-// File path: tb/unit/tb_id_ex_reg.cc
-// Description: ID/EX Pipeline Register unit test
-
-#include <iostream>
-#include <iomanip>
-#include <cstdint>
-#include <cassert>
-#include <verilated.h>
-#include "Vid_ex_reg.h"
-
-int pass_count = 0;
-
-void tick(Vid_ex_reg* dut) {
-    dut->clk = 0;
-    dut->eval();
-    dut->clk = 1;
-    dut->eval();
-    dut->clk = 0;
-    dut->eval();
-}
-
-void check(bool cond, const char* name) {
-    if (cond) {
-        std::cout << "\033[32m[PASS] " << name << "\033[0m" << std::endl;
-        pass_count++;
-    } else {
-        std::cout << "\033[31m[FAIL] " << name << "\033[0m" << std::endl;
-        assert(false);
-    }
-}
-
-// Emulate rv64_pkg::alu_op_t
-enum AluOp { ALU_ADD = 0, ALU_SUB = 8, ALU_SLL = 1, ALU_SLT = 2, ALU_SLTU = 3,
-             ALU_XOR = 4, ALU_SRL = 5, ALU_SRA = 13, ALU_OR = 6, ALU_AND = 7 };
-
-int main(int argc, char** argv) {
-    Verilated::commandArgs(argc, argv);
-    Vid_ex_reg* dut = new Vid_ex_reg;
-
-    std::cout << "----------------------------------" << std::endl;
-    std::cout << "        ID/EX Register Test" << std::endl;
-    std::cout << "----------------------------------" << std::endl;
-
-    // 1. Init / Reset
-    dut->stall_en = 0;
-    dut->flush_en = 0;
-    
-    // Set some random ID stage inputs with dangerous states
-    dut->id_pc = 0x80001000;
-    dut->id_rs1_rdata = 0x11111111;
-    dut->id_rs2_rdata = 0x22222222;
-    dut->id_rs1_addr = 31;
-    dut->id_rs2_addr = 15;
-    dut->id_imm = 0x1A2B3C;
-    dut->id_alu_op = ALU_XOR;
-    dut->id_reg_write_en = 1;
-    dut->id_is_store = 1;
-    dut->id_is_load = 1;
-    dut->id_is_branch = 1;
-    dut->id_is_jump = 1;
-    dut->id_is_csr = 1;
-    dut->id_illegal_instr = 1;
-
-    dut->rst = 1;
-    tick(dut);
-    dut->rst = 0;
-
-    // Verify reset clears out dangerous signals
-    check(dut->ex_pc == 0, "Reset_Clears_PC");
-    check(dut->ex_reg_write_en == 0, "Reset_Clears_RegWrite");
-    check(dut->ex_is_store == 0, "Reset_Clears_IsStore");
-    check(dut->ex_is_load == 0, "Reset_Clears_IsLoad");
-    check(dut->ex_is_branch == 0, "Reset_Clears_IsBranch");
-    check(dut->ex_is_jump == 0, "Reset_Clears_IsJump");
-    check(dut->ex_is_csr == 0, "Reset_Clears_IsCSR");
-    check(dut->ex_illegal_instr == 0, "Reset_Clears_IllegalInstr");
-
-    // 2. Normal Propagation
-    dut->id_pc = 0x80002000;
-    dut->id_rs1_rdata = 0xAAAAAAAA;
-    dut->id_rs2_rdata = 0xBBBBBBBB;
-    dut->id_rs1_addr = 10;
-    dut->id_rs2_addr = 11;
-    dut->id_imm = 42;
-    dut->id_alu_op = ALU_ADD;
-    dut->id_reg_write_en = 1;
-    dut->id_rd_addr = 5;
-    dut->id_is_load = 1;
-    dut->id_is_branch = 0;
-
-    tick(dut);
-
-    check(dut->ex_pc == 0x80002000, "Propagate_PC");
-    check(dut->ex_rs1_rdata == 0xAAAAAAAA, "Propagate_RS1");
-    check(dut->ex_rs2_rdata == 0xBBBBBBBB, "Propagate_RS2");
-    check(dut->ex_rs1_addr == 10, "Propagate_RS1_Addr");
-    check(dut->ex_rs2_addr == 11, "Propagate_RS2_Addr");
-    check(dut->ex_imm == 42, "Propagate_IMM");
-    check(dut->ex_alu_op == ALU_ADD, "Propagate_ALU_OP");
-    check(dut->ex_reg_write_en == 1, "Propagate_RegWriteEn");
-    check(dut->ex_rd_addr == 5, "Propagate_RdAddr");
-    check(dut->ex_is_load == 1, "Propagate_IsLoad");
-
-    // 3. Stall (Freeze)
-    // Change input, but assert stall
-    dut->stall_en = 1;
-    dut->id_pc = 0x80003000;
-    dut->id_rd_addr = 10;
-    dut->id_reg_write_en = 0;
-    dut->id_is_load = 0;
-    
-    tick(dut);
-
-    check(dut->ex_pc == 0x80002000, "Stall_Maintains_PC");
-    check(dut->ex_rd_addr == 5, "Stall_Maintains_RdAddr");
-    check(dut->ex_reg_write_en == 1, "Stall_Maintains_RegWriteEn");
-    check(dut->ex_is_load == 1, "Stall_Maintains_IsLoad");
-
-    // Release Stall
-    dut->stall_en = 0;
-    tick(dut);
-    check(dut->ex_pc == 0x80003000, "ReleaseStall_Captures_PC");
-    check(dut->ex_rd_addr == 10, "ReleaseStall_Captures_RdAddr");
-    check(dut->ex_reg_write_en == 0, "ReleaseStall_Captures_RegWriteEn");
-
-    // 4. Flush (Insert Bubble/NOP)
-    // Change input, but assert flush
-    dut->flush_en = 1;
-    dut->id_pc = 0x80004000;
-    dut->id_reg_write_en = 1;
-    dut->id_is_store = 1;
-    dut->id_is_branch = 1;
-    
-    tick(dut);
-
-    check(dut->ex_pc == 0x80003000, "Flush_Maintains_PC");
-    check(dut->ex_reg_write_en == 0, "Flush_Clears_RegWrite"); 
-    check(dut->ex_is_store == 0, "Flush_Clears_StoreEn");     
-    check(dut->ex_is_branch == 0, "Flush_Clears_BranchEn");
-
-    // 5. Flush Overrides Stall
-    dut->flush_en = 0;
-    dut->id_pc = 0x80005000;
-    dut->id_reg_write_en = 1;
-    tick(dut); 
-    check(dut->ex_pc == 0x80005000, "Pre_FlushStall_Setup");
-
-    dut->flush_en = 1;
-    dut->stall_en = 1;
-    dut->id_pc = 0x80006000;
-    tick(dut);
-
-    check(dut->ex_pc == 0x80005000, "Flush_Overrides_Stall_PC");
-    check(dut->ex_reg_write_en == 0, "Flush_Overrides_Stall_RegWrite");
-
-    std::cout << "----------------------------------" << std::endl;
-    std::cout << "\033[32mAll " << pass_count << " tests passed!\033[0m" << std::endl;
-    std::cout << "----------------------------------" << std::endl;
-
-    delete dut;
-    return 0;
-}