mirror of
https://github.com/MoleskiCoder/EightBit.git
synced 2024-12-22 09:30:32 +00:00
Refactor the MOS6502 core:
* Use lambda, rather than std::bind, if reasonable * Tidy construction * Remove configuration etc. not needed for running Klaus Dormann 6502 tests
This commit is contained in:
Adrian Conlon
parent
68b352d1df
commit
2de467dde8
@ -8,10 +8,7 @@
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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_cpu(EightBit::MOS6502(*this)),
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m_disassembler(*this, m_cpu, m_symbols),
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m_profiler(m_cpu, m_disassembler, m_symbols) {}
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: m_configuration(configuration) {}
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void Board::powerOn() {
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EightBit::Bus::powerOn();
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@ -28,113 +25,40 @@ void Board::initialise() {
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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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m_ram.load(programPath, loadAddress.word);
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switch (m_configuration.getLoadMethod()) {
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case Configuration::LoadMethod::Ram:
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m_ram.load(programPath, loadAddress.word);
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break;
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case Configuration::LoadMethod::Rom:
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// m_rom.load(programPath, loadAddress);
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break;
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}
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// Disassembly output
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if (m_configuration.isDebugMode())
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CPU().ExecutingInstruction.connect([this] (EightBit::MOS6502& cpu) {
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const auto address = cpu.PC();
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const auto cell = peek(address);
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if (m_configuration.isProfileMode()) {
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CPU().ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Profile, this, std::placeholders::_1));
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}
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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(CPU().P()) << ", ";
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std::cout << std::setw(2) << std::setfill('0');
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std::cout << "A=" << (int)CPU().A() << ", ";
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std::cout << "X=" << (int)CPU().X() << ", ";
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std::cout << "Y=" << (int)CPU().Y() << ", ";
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std::cout << "S=" << (int)CPU().S() << "\t";
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if (m_configuration.isDebugMode()) {
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CPU().ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Debug, this, std::placeholders::_1));
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}
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std::cout << m_disassembler.disassemble(address.word);
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switch (m_configuration.getStopCondition()) {
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case Configuration::StopCondition::Loop:
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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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std::cout << "\n";
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});
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if (m_configuration.allowInput()) {
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ReadingByte.connect(std::bind(&Board::Memory_ReadingByte_Input, this, std::placeholders::_1));
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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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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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// Loop detected stop condition
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CPU().ExecutedInstruction.connect([this] (EightBit::MOS6502& cpu) {
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const auto pc = cpu.PC();
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if (m_oldPC != pc) {
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m_oldPC = pc;
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} else {
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powerOff();
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auto test = peek(0x0200);
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std::cout << std::endl << "** Test=" << std::hex << (int)test;
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}
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});
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poke(0x00, 0x4c);
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CPU().pokeWord(1, 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 = 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(EightBit::MOS6502& cpu) {
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auto pc = cpu.PC().word;
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if (m_oldPC != pc) {
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m_oldPC = pc;
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} else {
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powerOff();
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auto test = peek(0x0200);
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std::cout << std::endl << "** Test=" << std::hex << (int)test;
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}
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}
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void Board::Cpu_ExecutingInstruction_Debug(EightBit::MOS6502& cpu) {
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auto address = cpu.PC().word;
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auto cell = 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(CPU().P()) << ", ";
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std::cout << std::setw(2) << std::setfill('0');
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std::cout << "A=" << (int)CPU().A() << ", ";
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std::cout << "X=" << (int)CPU().X() << ", ";
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std::cout << "Y=" << (int)CPU().Y() << ", ";
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std::cout << "S=" << (int)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_ReadingByte_Input(EightBit::EventArgs) {
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if (ADDRESS() == m_configuration.getInputAddress()) {
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if (!!DATA())
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write(0);
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}
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}
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void Board::Memory_WrittenByte_Output(EightBit::EventArgs) {
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if (ADDRESS() == m_configuration.getOutputAddress()) {
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#ifdef _MSC_VER
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_putch(DATA());
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#endif
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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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#ifdef _MSC_VER
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if (_kbhit())
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poke(m_configuration.getInputAddress(), _getch());
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#endif
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}
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@ -6,10 +6,10 @@
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#include <Ram.h>
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#include <Bus.h>
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#include <Profiler.h>
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#include <Disassembly.h>
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#include <mos6502.h>
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#include <Symbols.h>
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#include <Register.h>
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class Board : public EightBit::Bus {
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public:
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@ -29,25 +29,10 @@ protected:
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private:
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const Configuration& m_configuration;
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EightBit::Ram m_ram = 0x10000;
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EightBit::MOS6502 m_cpu;
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EightBit::MOS6502 m_cpu = *this;
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EightBit::Symbols m_symbols;
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EightBit::Disassembly m_disassembler;
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EightBit::Profiler m_profiler;
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EightBit::Disassembly m_disassembler = { *this, m_cpu, m_symbols };
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uint16_t m_oldPC = 0xffff;
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EightBit::register16_t m_oldPC = EightBit::Chip::Mask16;
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bool m_stopped = false;
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uint64_t m_pollCounter = 0UL;
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uint64_t m_pollInterval = 0UL;
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void pollKeyboard();
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void Cpu_ExecutingInstruction_Debug(EightBit::MOS6502& cpu);
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void Cpu_ExecutingInstruction_Profile(const EightBit::MOS6502& cpu);
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void Cpu_ExecutedInstruction_StopLoop(EightBit::MOS6502& cpu);
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void Memory_ReadingByte_Input(EightBit::EventArgs);
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void Memory_WrittenByte_Output(EightBit::EventArgs);
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void Cpu_ExecutedInstruction_Poll(const EightBit::MOS6502& cpu);
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};
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@ -6,54 +6,21 @@
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class Configuration {
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public:
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enum StopCondition {
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Halt,
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Loop
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};
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enum LoadMethod {
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Ram,
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Rom
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};
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Configuration() = default;
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bool isDebugMode() const { return m_debugMode; }
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void setDebugMode(bool value) { m_debugMode = value; }
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bool isProfileMode() const { return m_profileMode; }
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void setProfileMode(bool value) { m_profileMode = value; }
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EightBit::register16_t getLoadAddress() const { return m_loadAddress; }
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EightBit::register16_t getStartAddress() const { return m_startAddress; }
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bool allowInput() const { return m_allowInput; }
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EightBit::register16_t getInputAddress() const { return m_inputAddress; }
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bool allowOutput() const { return m_allowOutput; }
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EightBit::register16_t getOutputAddress() const { return m_outputAddress; }
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uint64_t getPollInterval() const { return m_pollInterval; }
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StopCondition getStopCondition() const { return m_stopCondition; }
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std::string getRomDirectory() const { return m_romDirectory; }
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std::string getProgram() const { return m_program; }
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LoadMethod getLoadMethod() const { return m_loadMethod; }
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private:
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bool m_debugMode = false;
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bool m_profileMode = false;
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EightBit::register16_t m_loadAddress = 0x400;
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EightBit::register16_t m_startAddress = 0x400;
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bool m_allowInput = false;
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EightBit::register16_t m_inputAddress = 0xbff0;
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bool m_allowOutput = false;
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EightBit::register16_t m_outputAddress = 0xbff0;
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uint64_t m_pollInterval = 2000000 / 50;
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StopCondition m_stopCondition = StopCondition::Loop;
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std::string m_romDirectory = "roms";
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std::string m_program = "6502_functional_test.bin";
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LoadMethod m_loadMethod = LoadMethod::Ram;
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};
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