public Bus(RedBus redBus, int size)
{
RedBus = redBus;
devices = new List <Device>(size);
boundaries = new int[0];
BusCapacity = size;
}
public void Down()
{
//56mb
this.cpu.Dispose();
this.bios = null;
this.redBus = null;
this.bus = null;
this.cpu = null;
GC.Collect();
//55mb (-2.3kb)
}
public Device findDevice(int address)
{
if (RedBus.inRange(address))
{
return(RedBus);
}
var idx = Array.BinarySearch(boundaries, address);
if (idx < 0)
{
idx = -idx - 2;
}
if (idx < 0)
{
return(new CorruptedDevice());
}
return(devices[idx]);
}
/// <summary>
/// Constructs the machine with the given RAM size and load a bootloader into memory.
/// The bootloader is loaded at address 0x400 to 0x500.
/// </summary>
/// <param name="bootloader">
/// The path to the bootloader file
/// </param>
/// <param name="coreRamSize">
/// The size of RAM in bytes
/// </param>
public Machine(string bootloader, string os, int coreRamSize)
{
try
{
bios = new Bios(this, 0x0100, "PGX");
cpu = new CPU(IsLight);
redBus = new RedBus(cpu);
bus = new Bus(redBus);
cpu.Bus = (bus);
var deb = new Debugger(cpu);
cpu.linkDebugger(deb);
var ram = new Memory(0x0000, coreRamSize - 1, cpu);
if (bootloader != null)
{
ram.loadFromFile(bootloader, 0x0300, 0x4268, "bootloader");
}
if (os != null)
{
ram.loadFromFile(os, 0x0300, 0x4268, "os");
}
bus.AddDevice(ram);
//bus.AddDevice(new Acia6850(0x8800, cpu)); // invalid instruction page
bus.AddDevice(new Acia6551(0x8800, cpu));
bus.AddDevice(new CRTC(0x9000, cpu, ram));
//bus.AddDevice(new WIFICard(0x10000, cpu)); // wtf, hault on divide by zero
bus.AddDevice(new WirelessTerminal(0x9500, cpu)); // in address 0x10k, wsod on register overflow
}
catch (Exception e)
{
cpu.Hault(e);
Down();
}
reset();
coldUpCPU();
}
public void update() => RedBus.updatePeripheral();
public Bus(RedBus redBus) : this(redBus, 0x10)
{
}
public Bus initBus()
{
redBus = new RedBus(cpu);
return(new Bus(redBus));
}
