/// <summary>
/// Loads the content of the ROM through the specified provider
/// </summary>
/// <param name="romDevice">ROM device instance</param>
/// <param name="romConfig">ROM configuration</param>
/// <remarks>
/// The content of the ROM is copied into the memory
/// </remarks>
public void InitRom(IRomDevice romDevice, IRomConfiguration romConfig)
{
for (var i = 0; i < romConfig.NumberOfRoms; i++)
{
MemoryDevice.SelectRom(i);
MemoryDevice.CopyRom(romDevice.GetRomBytes(i));
}
MemoryDevice.SelectRom(0);
}
/// <summary>
/// Signs that the device has been attached to the Spectrum virtual machine
/// </summary>
public override void OnAttachedToVm(ISpectrumVm hostVm)
{
base.OnAttachedToVm(hostVm);
_romConfig = hostVm.RomConfiguration;
_nextDevice = hostVm.NextDevice;
_divIdeDevice = hostVm.DivIdeDevice;
// --- Create space for ROM pages (use 10 x 8K pages)
var romCount = _romConfig.NumberOfRoms * 2;
_romPages = new byte[romCount][];
for (var i = 0; i < romCount; i++)
{
_romPages[i] = new byte[0x2000];
}
// --- Obtain Next memory size
var memSize = HostVm.MemoryConfiguration.NextMemorySize;
if (memSize < 1024)
{
memSize = 512;
}
else if (memSize >= 1024 && memSize < 1536)
{
memSize = 1024;
}
else if (memSize >= 1536 && memSize < 2048)
{
memSize = 1536;
}
else
{
memSize = 2048;
}
// --- Calculate number of RAM pages
RamPageCount = 16 + 64 * (memSize - 512) / 512;
// --- Allocate RAM
_ramPages = new byte[RamPageCount][];
for (var i = 0; i < RamPageCount; i++)
{
_ramPages[i] = new byte[0x2000];
}
Reset();
}
