EightBit/M6502/test_M6502/Board.cpp
Adrian.Conlon a77e57e5fc Add pre/post read/write memory events.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-09-13 23:12:47 +01:00

133 lines
3.7 KiB
C++

#include "stdafx.h"
#include "Board.h"
#include "Disassembly.h"
#include <iostream>
#include <sstream>
#include <iomanip>
#include <assert.h>
Board::Board(const Configuration& configuration)
: m_configuration(configuration),
m_ram(0x10000),
m_cpu(EightBit::MOS6502(*this)),
m_symbols(""),
m_disassembler(m_cpu, m_symbols),
m_profiler(m_cpu, m_disassembler, m_symbols),
m_oldPC(0xffff),
m_stopped(false) {
}
void Board::initialise() {
auto programFilename = m_configuration.getProgram();
auto programPath = m_configuration.getRomDirectory() + "\\" + m_configuration.getProgram();
auto loadAddress = m_configuration.getLoadAddress();
switch (m_configuration.getLoadMethod()) {
case Configuration::LoadMethod::Ram:
m_ram.load(programPath, loadAddress);
break;
case Configuration::LoadMethod::Rom:
// m_rom.load(programPath, loadAddress);
break;
}
if (m_configuration.isProfileMode()) {
m_cpu.ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Profile, this, std::placeholders::_1));
}
if (m_configuration.isDebugMode()) {
m_cpu.ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Debug, this, std::placeholders::_1));
}
switch (m_configuration.getStopCondition()) {
case Configuration::StopCondition::Loop:
m_cpu.ExecutedInstruction.connect(std::bind(&Board::Cpu_ExecutedInstruction_StopLoop, this, std::placeholders::_1));
break;
case Configuration::StopCondition::Halt:
break;
default:
throw std::domain_error("Unknown stop condition");
}
if (m_configuration.allowInput()) {
ReadByte.connect(std::bind(&Board::Memory_ReadByte_Input, this, std::placeholders::_1));
m_cpu.ExecutedInstruction.connect(std::bind(&Board::Cpu_ExecutedInstruction_Poll, this, std::placeholders::_1));
}
if (m_configuration.allowOutput())
WrittenByte.connect(std::bind(&Board::Memory_WrittenByte_Output, this, std::placeholders::_1));
m_pollCounter = 0;
m_pollInterval = m_configuration.getPollInterval();
m_cpu.initialise();
m_cpu.PC().word = m_configuration.getStartAddress();
}
void Board::Cpu_ExecutingInstruction_Profile(const EightBit::MOS6502& cpu) {
const auto pc = m_cpu.PC();
//m_profiler.addAddress(pc.word, m_cpu.);
//m_profiler.addInstruction(m_memory.peek(pc.word));
}
void Board::Cpu_ExecutedInstruction_StopLoop(const EightBit::MOS6502& cpu) {
auto pc = m_cpu.PC().word;
if (m_oldPC == pc) {
m_cpu.halt();
auto test = peek(0x0200);
std::cout << std::endl << "** Test=" << std::hex << (int)test;
} else {
m_oldPC = pc;
}
}
void Board::Cpu_ExecutingInstruction_Debug(const EightBit::MOS6502& cpu) {
auto address = m_cpu.PC().word;
auto cell = peek(address);
std::cout << std::hex;
std::cout << "PC=" << std::setw(4) << std::setfill('0') << address << ":";
std::cout << "P=" << m_disassembler.dump_Flags(m_cpu.P()) << ", ";
std::cout << std::setw(2) << std::setfill('0');
std::cout << "A=" << (int)m_cpu.A() << ", ";
std::cout << "X=" << (int)m_cpu.X() << ", ";
std::cout << "Y=" << (int)m_cpu.Y() << ", ";
std::cout << "S=" << (int)m_cpu.S() << "\t";
std::cout << m_disassembler.disassemble(address);
std::cout << "\n";
}
void Board::Memory_ReadByte_Input(const uint16_t address) {
if (address == m_configuration.getInputAddress()) {
if (DATA() != 0) {
assert(address == ADDRESS().word);
write(0);
}
}
}
void Board::Memory_WrittenByte_Output(const uint16_t address) {
if (address == m_configuration.getOutputAddress()) {
_putch(DATA());
}
}
void Board::Cpu_ExecutedInstruction_Poll(const EightBit::MOS6502& cpu) {
if (++m_pollCounter == m_pollInterval) {
m_pollCounter = 0;
pollKeyboard();
}
}
void Board::pollKeyboard() {
if (_kbhit())
poke(m_configuration.getInputAddress(), _getch());
}