EightBit/Z80/test/Board.cpp
Adrian Conlon 92d23d82d6 Start big refactor of device/CPU pin usage (to allow pin events throughout).
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2019-01-14 02:10:17 +00:00

78 lines
1.6 KiB
C++

#include "stdafx.h"
#include "Board.h"
Board::Board(const Configuration& configuration)
: m_configuration(configuration) {}
void Board::raisePOWER() {
EightBit::Bus::raisePOWER();
CPU().raisePOWER();
CPU().raiseRESET();
CPU().raiseINT();
CPU().raiseNMI();
}
void Board::lowerPOWER() noexcept {
CPU().lowerPOWER();
EightBit::Bus::lowerPOWER();
}
void Board::initialise() {
auto romDirectory = m_configuration.getRomDirectory();
m_ram.load(romDirectory + "/zexall.com", 0x100); // Cringle/Bartholomew
m_cpu.LoweredHALT.connect([this](EightBit::EventArgs) {
lowerPOWER();
});
m_cpu.ExecutingInstruction.connect([this] (EightBit::Z80& cpu) {
switch (cpu.PC().word) {
case 0x0: // CP/M warm start
if (++m_warmstartCount == 2) {
lowerPOWER();
if (m_configuration.isProfileMode())
m_profiler.dump();
}
break;
case 0x5: // BDOS
bdos();
break;
default:
break;
}
});
if (m_configuration.isProfileMode())
m_cpu.ExecutingInstruction.connect([this] (EightBit::Z80& cpu) {
const auto pc = cpu.PC();
m_profiler.addAddress(pc.word);
m_profiler.addInstruction(peek(pc));
});
if (m_configuration.isDebugMode())
m_cpu.ExecutingInstruction.connect([this] (EightBit::Z80& cpu) {
std::cerr
<< EightBit::Disassembler::state(cpu)
<< "\t"
<< m_disassembler.disassemble(cpu)
<< std::endl;
});
poke(0, 0xc3); // JMP
CPU().pokeWord(1, m_configuration.getStartAddress());
poke(5, 0xc9); // ret
}
void Board::bdos() {
switch (CPU().C()) {
case 0x2:
std::cout << CPU().E();
break;
case 0x9:
for (uint16_t i = CPU().DE().word; peek(i) != '$'; ++i)
std::cout << peek(i);
break;
}
}