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** HANDLE ACCELERATOR CALLS
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*/
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if(exe_next_call.read()){
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call.write(1);
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pc_prev_addr = (pc_prev_addr.read());
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wait(micro_acc_ev);
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pc_prev_addr = (pc_prev_addr.read()) + 1;
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}
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}
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}
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void pcInc (){
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// increment the pc
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tmp_pc_prev_addr = pc_prev_addr.read();
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pc_prev_addr = ++tmp_pc_prev_addr;
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}
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void decode (){
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/*
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** split next instruction to the corresponding signals (Instruction Decode)
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*/
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tmp = ir_inst.read();
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opcode = tmp.range(19, 16);
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opselect = tmp.range(3, 0);
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rd = tmp.range(15, 13);
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rs = tmp.range(12, 10);
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rt = tmp.range(9, 7);
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sa = tmp.range(6, 4);
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offset = (sc_int<13>) tmp.range(12, 0);
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}
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void ImmTo8bits (){
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/*
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** Mux 8 for immediate or B
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*/
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tmp_id_next_Imm = offset.read();
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id_nex_imm_8bits = (tmp_id_next_Imm.range(7, 0));
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}
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void busAccess (){
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/*
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** ACCESS MEM. VIA BUS
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*/
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wb_prev_mem_data = mem_data.read();
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mem_addr = (sc_uint<13>) id_next_Imm.read();
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read.write(exe_next_r.read());
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write.write(exe_next_w.read());
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addr.write(mem_addr.read());
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data.write(exe_next_result.read());
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call.write(0); // setting of the value is also performs in process function
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}
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void tester () {
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// testing wires
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for(int i=0; i<8; i++){
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reg_dump[i].write(regs[i].read());
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}
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test_aluOp.write(aluOp.read());
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test_pc.write(pc_next_addr.read());
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test_inst.write((sc_uint<20>)if_next_data.read());
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print();
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}
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void print(){
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cout << "pc addr ((FETCH)) :\t" << pc_next_addr << endl << endl;
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cout << "IF inst ((DECODE)):\t" << std::hex << if_next_data << endl;
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cout << "controller| opcode:\t" << opcode << endl;
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cout << "regFile| regMux :\t" << regMux << endl;
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cout << "regFile| r1 :\t" << mux_reg_res << endl;
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cout << "regFile| r2 :\t" << rt << endl;
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cout << "regFile| r3 :\t" << wb_next_rd << endl;
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cout << "regFile| imm :\t" << offset << endl;
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cout << "regFile| data :\t" << wb_next_rd << endl;
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cout << "regFile| regWrite :\t" << wb_next_regWrite << endl << endl;
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cout << "A ((EXE)) :\t" << id_next_A << endl;
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cout << "B :\t" << alu_in_B << endl;
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cout << "aluOp :\t" << id_next_AluOp << endl;
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cout << "aluMux :\t" << id_next_AluMux << endl;
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cout << "imm :\t" << id_next_Imm << endl;
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cout << "aluOut :\t" << alu_out << endl << endl;
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cout << "imm :\t" << exe_next_Imm << endl;
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cout << "data_in ((MEM)) :\t" << exe_next_result << endl;
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cout << "addr :\t" << exe_next_Imm << endl;
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cout << "read :\t" << exe_next_r << endl;
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cout << "write :\t" << exe_next_w << endl;
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cout << "data_out :\t" << mem_data << endl << endl;
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cout << "data ((WB)) :\t" << regFileData << endl;
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cout << "rd :\t" << exe_next_rd << endl;
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cout << "wbMux :\t" << wb_next_WbMux << endl << endl;
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}
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};
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/*
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