private void InitMedia(byte[] rom)
{
switch (C64FormatFinder.GetFormat(rom))
{
case C64Format.D64:
var d64 = D64.Read(rom);
if (d64 != null)
{
_board.DiskDrive.InsertMedia(d64);
}
break;
case C64Format.G64:
var g64 = G64.Read(rom);
if (g64 != null)
{
_board.DiskDrive.InsertMedia(g64);
}
break;
case C64Format.CRT:
var cart = CartridgeDevice.Load(rom);
if (cart != null)
{
_board.CartPort.Connect(cart);
}
break;
case C64Format.TAP:
var tape = Tape.Load(rom);
if (tape != null)
{
_board.TapeDrive.Insert(tape);
}
break;
case C64Format.Unknown:
var prgDisk = new DiskBuilder
{
Entries = new List <DiskBuilder.Entry>
{
new DiskBuilder.Entry
{
Closed = true,
Data = rom,
Locked = false,
Name = "PRG",
RecordLength = 0,
Type = DiskBuilder.FileType.Program
}
}
}.Build();
if (prgDisk != null)
{
_board.DiskDrive.InsertMedia(prgDisk);
}
break;
}
}
private void Init(VicType initRegion, BorderType borderType, SidType sidType, TapeDriveType tapeDriveType, DiskDriveType diskDriveType)
{
// Force certain drive types to be available depending on ROM type
foreach (var rom in Roms)
{
switch (C64FormatFinder.GetFormat(rom))
{
case C64Format.D64:
case C64Format.G64:
case C64Format.X64:
if (diskDriveType == DiskDriveType.None)
{
diskDriveType = DiskDriveType.Commodore1541;
}
break;
case C64Format.T64:
case C64Format.TAP:
if (tapeDriveType == TapeDriveType.None)
{
tapeDriveType = TapeDriveType.Commodore1530;
}
break;
case C64Format.CRT:
// Nothing required.
break;
case C64Format.Unknown:
if (rom.Length >= 0xFE00)
{
throw new Exception("The image format is not known, and too large to be used as a PRG.");
}
if (diskDriveType == DiskDriveType.None)
{
diskDriveType = DiskDriveType.Commodore1541;
}
break;
default:
throw new Exception("The image format is not yet supported by the Commodore 64 core.");
}
}
_board = new Motherboard(this, initRegion, borderType, sidType, tapeDriveType, diskDriveType);
InitRoms(diskDriveType);
_board.Init();
// configure video
CoreComm.VsyncDen = _board.Vic.CyclesPerFrame;
CoreComm.VsyncNum = _board.Vic.CyclesPerSecond;
}
// Currently we will require at least one rom. If multiple they MUST be all the same media type in the same format
// Given a good enough use case we could in theory expand those requirements, but for now we need a sanity check
private void RomSanityCheck()
{
if (Roms.Count == 0)
{
throw new NotSupportedException("Currently, a Rom is required to run this core.");
}
var formats = Roms.Select(rom => C64FormatFinder.GetFormat(rom));
HashSet <C64Format> uniqueFormats = new HashSet <C64Format>();
foreach (var format in formats)
{
uniqueFormats.Add(format);
}
if (uniqueFormats.Count > 1)
{
throw new NotSupportedException("Currently Roms must all be of the same type.");
}
}
