mirror of
https://github.com/MoleskiCoder/EightBit.git
synced 2024-07-07 00:28:57 +00:00
137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
#include "stdafx.h"
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#include "Board.h"
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#include "Disassembly.h"
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#include <iostream>
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#include <sstream>
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#include <iomanip>
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#include <assert.h>
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Board::Board(const Configuration& configuration)
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: m_configuration(configuration),
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m_memory(0xffff),
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m_cpu(EightBit::MOS6502(m_memory)),
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m_symbols(""),
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m_disassembler(m_cpu, m_symbols),
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m_profiler(m_cpu, m_disassembler, m_symbols),
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m_oldPC(0xffff),
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m_stopped(false) {
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}
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void Board::initialise() {
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m_memory.clear();
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auto programFilename = m_configuration.getProgram();
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auto programPath = m_configuration.getRomDirectory() + "\\" + m_configuration.getProgram();
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auto loadAddress = m_configuration.getLoadAddress();
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switch (m_configuration.getLoadMethod()) {
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case Configuration::LoadMethod::Ram:
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m_memory.loadRam(programPath, loadAddress);
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break;
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case Configuration::LoadMethod::Rom:
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m_memory.loadRom(programPath, loadAddress);
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break;
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}
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if (m_configuration.isProfileMode()) {
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m_cpu.ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Profile, this, std::placeholders::_1));
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}
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if (m_configuration.isDebugMode()) {
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m_cpu.ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Debug, this, std::placeholders::_1));
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}
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switch (m_configuration.getStopCondition()) {
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case Configuration::StopCondition::Loop:
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m_cpu.ExecutedInstruction.connect(std::bind(&Board::Cpu_ExecutedInstruction_StopLoop, this, std::placeholders::_1));
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break;
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case Configuration::StopCondition::Halt:
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break;
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default:
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throw std::domain_error("Unknown stop condition");
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}
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if (m_configuration.allowInput()) {
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m_memory.ReadByte.connect(std::bind(&Board::Memory_ReadByte_Input, this, std::placeholders::_1));
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m_cpu.ExecutedInstruction.connect(std::bind(&Board::Cpu_ExecutedInstruction_Poll, this, std::placeholders::_1));
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}
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if (m_configuration.allowOutput())
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m_memory.WrittenByte.connect(std::bind(&Board::Memory_WrittenByte_Output, this, std::placeholders::_1));
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m_pollCounter = 0;
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m_pollInterval = m_configuration.getPollInterval();
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m_cpu.initialise();
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m_cpu.PC().word = m_configuration.getStartAddress();
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}
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void Board::Cpu_ExecutingInstruction_Profile(const EightBit::MOS6502& cpu) {
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const auto pc = m_cpu.PC();
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//m_profiler.addAddress(pc.word, m_cpu.);
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//m_profiler.addInstruction(m_memory.peek(pc.word));
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}
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void Board::Cpu_ExecutedInstruction_StopLoop(const EightBit::MOS6502& cpu) {
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auto pc = m_cpu.PC().word;
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if (m_oldPC == pc) {
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m_cpu.halt();
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auto test = m_memory.peek(0x0200);
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std::cout << std::endl << "** Test=" << std::hex << (int)test;
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} else {
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m_oldPC = pc;
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}
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}
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void Board::Cpu_ExecutingInstruction_Debug(const EightBit::MOS6502& cpu) {
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auto address = m_cpu.PC().word;
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auto cell = m_memory.peek(address);
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std::cout << std::hex;
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std::cout << "PC=" << std::setw(4) << std::setfill('0') << address << ":";
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std::cout << "P=" << m_disassembler.dump_Flags(m_cpu.P()) << ", ";
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std::cout << std::setw(2) << std::setfill('0');
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std::cout << "A=" << (int)m_cpu.A() << ", ";
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std::cout << "X=" << (int)m_cpu.X() << ", ";
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std::cout << "Y=" << (int)m_cpu.Y() << ", ";
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std::cout << "S=" << (int)m_cpu.S() << "\t";
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std::cout << m_disassembler.disassemble(address);
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std::cout << "\n";
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}
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void Board::Memory_ReadByte_Input(const EightBit::AddressEventArgs& e) {
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auto address = e.getAddress();
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if (address == m_configuration.getInputAddress()) {
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auto cell = e.getCell();
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if (cell != 0) {
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assert(address == m_memory.ADDRESS().word);
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m_memory.write(0);
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}
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}
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}
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void Board::Memory_WrittenByte_Output(const EightBit::AddressEventArgs& e) {
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if (e.getAddress() == m_configuration.getOutputAddress()) {
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_putch(e.getCell());
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}
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}
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void Board::Cpu_ExecutedInstruction_Poll(const EightBit::MOS6502& cpu) {
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if (++m_pollCounter == m_pollInterval) {
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m_pollCounter = 0;
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pollKeyboard();
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}
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}
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void Board::pollKeyboard() {
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if (_kbhit())
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m_memory.poke(m_configuration.getInputAddress(), _getch());
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} |