public void Step()
{
try
{
RefreshProps();
double cpuHertz = 4.77 * 1000000;
_sw.Restart();
double clocks = _cpu.ProcessSingleInstruction(Debug);
_sw.Stop();
double us = (clocks / cpuHertz) * 1000000;
UpdateSpeed(us);
_timer.Step(us);
DrawBuffer = _video.Step(us);
_masterPic.Step();
_slavePic.Step();
_masterFloppy.Step(us);
_slaveFloppy.Step(us);
RefreshProps();
var breakpoint = Breakpoints.FirstOrDefault(b => b.Address == GetCurrentAddress());
if (breakpoint != null)
{
Status = SystemStatus.Paused;
if (breakpoint.IsInternal)
{
RemoveBreakpoint(breakpoint.Address);
}
BreakpointHit?.Invoke();
RefreshProps(true);
}
}
catch (InvalidOperationException e)
{
Console.WriteLine(e.Message);
Console.WriteLine("SYSTEM PAUSED");
Status = SystemStatus.Paused;
BreakpointHit?.Invoke();
RefreshProps(true);
}
}
private static void Main()
{
Console.BufferHeight = 32766;
Console.WriteLine("z100emu");
var rom = ZenithRom.GetRom("v1-2.bin");
var slave8259 = new Intel8259();
var master8259 = new Intel8259(slave8259);
var video = new ZenithVideo(master8259);
var ram = new ZenithRam(1024 * 1024, master8259);
ram.MapBank(rom);
var disk = new ImdFloppy(File.ReadAllBytes("msd2131.imd"));
Console.WriteLine("IMD Version: " + disk.ImdVersion);
Console.WriteLine("IMD Date: " + disk.ImdDate);
Console.WriteLine("IMD Comment: " + disk.ImdComment);
ICpu cpu = new Cpu8086(ram, master8259);
var timer = new Intel8253(master8259);
cpu.AttachPortDevice(timer);
cpu.AttachPortDevice(master8259);
cpu.AttachPortDevice(slave8259);
cpu.AttachPortDevice(new ZenithMemControl(ram, rom));
cpu.AttachPortDevice(new ZenithReserved());
var kb = new Zenith8041a(master8259);
cpu.AttachPortDevice(kb);
cpu.AttachPortDevice(new ZenithParallel());
cpu.AttachPortDevice(new ZenithSerial(0xE8));
cpu.AttachPortDevice(new ZenithSerial(0xEC));
cpu.AttachPortDevice(new ZenithExpansion());
cpu.AttachPortDevice(new ZenithDIP());
cpu.AttachPortDevice(new ZenithWinchester());
var masterStatus = new StatusPort(slave8259, 0xB5);
var masterFloppy = new WD1797(masterStatus, 0xB0, disk);
var masterCl = new ControlLatch(0xB4);
var slaveStatus = new StatusPort(slave8259, 0xBD);
var slaveFloppy = new WD1797(slaveStatus, 0xB8, disk);
var slaveCl = new ControlLatch(0xBC);
cpu.AttachPortDevice(masterFloppy);
cpu.AttachPortDevice(masterCl);
cpu.AttachPortDevice(masterStatus);
cpu.AttachPortDevice(slaveFloppy);
cpu.AttachPortDevice(slaveCl);
cpu.AttachPortDevice(slaveStatus);
ram.MapBank(video);
cpu.AttachPortDevice(video);
var debug = false;
double cpuHertz = 4.77 * 1000000;
Stopwatch sw = new Stopwatch();
var quit = false;
while (!quit)
{
sw.Restart();
double clocks = cpu.ProcessSingleInstruction(debug);
sw.Stop();
double realUs = sw.ElapsedTicks * TimeSpan.TicksPerMillisecond * 1000;
double us = (clocks / cpuHertz) * 1000000;
timer.Step(us);
video.Step(us);
master8259.Step();
slave8259.Step();
masterFloppy.Step(us);
slaveFloppy.Step(us);
}
}
