EightBit/Intel8080/test/Board.cpp
Adrian Conlon 6d4223c368 Start moving towards reset being just another style of interrupt.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2018-08-25 01:34:30 +01:00

90 lines
2.1 KiB
C++

#include "stdafx.h"
#include "Board.h"
#include "Configuration.h"
#include <iostream>
Board::Board(const Configuration& configuration)
: m_configuration(configuration),
m_cpu(EightBit::Intel8080(*this, m_ports)) {
}
void Board::initialise() {
auto romDirectory = m_configuration.getRomDirectory();
//m_ram.load(romDirectory + "/TEST.COM", 0x100); // Microcosm
//m_ram.load(romDirectory + "/8080PRE.COM", 0x100); // Bartholomew preliminary
m_ram.load(romDirectory + "/8080EX1.COM", 0x100); // Cringle/Bartholomew
//m_ram.load(romDirectory + "/CPUTEST.COM", 0x100); // SuperSoft diagnostics
m_cpu.ExecutingInstruction.connect(std::bind(&Board::Cpu_ExecutingInstruction_Cpm, this, std::placeholders::_1));
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));
}
CPU().powerOn();
CPU().reset();
poke(0, 0xc3); // JMP
poke(1, m_configuration.getStartAddress().low);
poke(2, m_configuration.getStartAddress().high);
poke(5, 0xc9); // ret
}
void Board::Cpu_ExecutingInstruction_Cpm(EightBit::Intel8080& cpu) {
switch (cpu.PC().word) {
case 0x0: // CP/M warm start
if (++m_warmstartCount == 3) {
CPU().powerOff();
if (m_configuration.isProfileMode()) {
m_profiler.dump();
}
}
break;
case 0x5: // BDOS
bdos();
break;
default:
break;
}
}
void Board::bdos() {
switch (CPU().C()) {
case 0x2: {
const auto character = CPU().E();
std::cout << character;
break;
}
case 0x9:
for (uint16_t i = CPU().DE().word; peek(i) != '$'; ++i) {
std::cout << peek(i);
}
break;
}
}
void Board::Cpu_ExecutingInstruction_Profile(EightBit::Intel8080& cpu) {
const auto pc = cpu.PC();
m_profiler.addAddress(pc.word);
m_profiler.addInstruction(peek(pc.word));
}
void Board::Cpu_ExecutingInstruction_Debug(const EightBit::Intel8080& cpu) {
std::cerr
<< EightBit::Disassembler::state(CPU())
<< "\t"
<< m_disassembler.disassemble(CPU())
<< '\n';
}