/// <summary>
/// ZXSTBETA128 - Beta 128 disk interface from Technology Research UK Ltd.
/// </summary>
#endregion
private void applyB128(byte[] data)
{
var betaDisk = _spec.BusManager.FindDevice <IBetaDiskDevice>();
if (betaDisk != null)
{
int offset = 0;
int dwFlags = BitConverter.ToInt32(data, offset); offset += 4;
byte chNumDrives = data[offset]; offset += 1;
byte chSysReg = data[offset]; offset += 1;
byte chTrackReg = data[offset]; offset += 1;
byte chSectorReg = data[offset]; offset += 1;
byte chDataReg = data[offset]; offset += 1;
byte chStatusReg = data[offset]; offset += 1;
byte[] chRomData = new byte[data.Length - offset];
for (int i = 0; i < chRomData.Length; i++)
{
chRomData[i] = data[i + offset];
}
if (chRomData.Length > 0 && (dwFlags & ZXSTBETAF_COMPRESSED) != 0)
{
byte[] dataDecompressed = new byte[0x4000];
using (MemoryStream ms = new MemoryStream(chRomData))
{
ZipLib.Zip.Compression.Streams.InflaterInputStream inflater = new ZipLib.Zip.Compression.Streams.InflaterInputStream(ms);
inflater.Read(dataDecompressed, 0, dataDecompressed.Length);
}
chRomData = dataDecompressed;
}
betaDisk.DOSEN = (dwFlags & ZXSTBETAF_PAGED) != 0;
}
}
private static IEnumerable <int> LoadRleData(
Stream stream,
byte type,
int dataSize)
{
if (type == 2) // Z-RLE
{
stream = new ZipLib.Zip.Compression.Streams.InflaterInputStream(stream);
}
else if (type != 1)
{
throw new NotSupportedException(
string.Format(
"Unknown compression type: 0x{0:X2}!",
type));
}
var list = new List <int>();
while ((type == 1 && stream.Position < stream.Length) ||
(type == 2 && list.Count < dataSize))
{
var buf = new byte[4];
var read = stream.Read(buf, 0, 1);
if (read != 1)
{
throw new EndOfStreamException("Unexpected end of stream");
}
if (buf[0] == 0)
{
read = stream.Read(buf, 0, 4);
if (read != 4)
{
throw new EndOfStreamException("Unexpected end of stream");
}
}
var rle =
(buf[0] << 0) |
(buf[1] << 8) |
(buf[2] << 16) |
(buf[3] << 24);
list.Add(rle);
}
return(list);
}
/// <summary>
/// ZXSTRAMPAGE - 16KB RAM page blocks, depending on the specific Spectrum model.
/// </summary>
#endregion
private void apply_RAMP(byte[] data)
{
int offset = 0;
UInt16 wFlags = BitConverter.ToUInt16(data, offset); offset += 2;
byte chPageNo = data[offset]; offset += 1;
var memory = _spec.BusManager.FindDevice <IMemoryDevice>();
if (chPageNo >= memory.RamPages.Length)
{
Logger.Warn(
"SzxSerializer: skip block 'RAMP' chPageNo={0} (incompatible)",
chPageNo);
return;
}
byte[] chData = new byte[data.Length - offset];
for (int i = 0; i < chData.Length; i++)
{
chData[i] = data[i + offset];
}
if ((wFlags & ZXSTRF_COMPRESSED) != 0)
{
byte[] dataDecompressed = new byte[0x4000];
using (MemoryStream ms = new MemoryStream(chData))
{
ZipLib.Zip.Compression.Streams.InflaterInputStream inflater = new ZipLib.Zip.Compression.Streams.InflaterInputStream(ms);
inflater.Read(dataDecompressed, 0, dataDecompressed.Length);
}
chData = dataDecompressed;
}
//using (FileStream fs = new FileStream("_RAMP" + chPageNo.ToString("D2") + ".bin", FileMode.Create, FileAccess.Write, FileShare.Read))
// fs.Write(chData, 0, chData.Length);
for (int i = 0; i < 0x4000; i++)
{
memory.RamPages[chPageNo][i] = chData[i];
}
}
private void apply_RAMP(byte[] data)
{
int offset = 0;
UInt16 wFlags = BitConverter.ToUInt16(data, offset); offset += 2;
byte chPageNo = data[offset]; offset += 1;
var memory = _spec.BusManager.FindDevice<IMemoryDevice>();
if (chPageNo >= memory.RamPages.Length)
{
LogAgent.Warn(
"SzxSerializer: skip block 'RAMP' chPageNo={0} (incompatible)",
chPageNo);
return;
}
byte[] chData = new byte[data.Length - offset];
for (int i = 0; i < chData.Length; i++)
{
chData[i] = data[i + offset];
}
if ((wFlags & ZXSTRF_COMPRESSED) != 0)
{
byte[] dataDecompressed = new byte[0x4000];
using (MemoryStream ms = new MemoryStream(chData))
{
ZipLib.Zip.Compression.Streams.InflaterInputStream inflater = new ZipLib.Zip.Compression.Streams.InflaterInputStream(ms);
inflater.Read(dataDecompressed, 0, dataDecompressed.Length);
}
chData = dataDecompressed;
}
//using (FileStream fs = new FileStream("_RAMP" + chPageNo.ToString("D2") + ".bin", FileMode.Create, FileAccess.Write, FileShare.Read))
// fs.Write(chData, 0, chData.Length);
for (int i = 0; i < 0x4000; i++)
{
memory.RamPages[chPageNo][i] = chData[i];
}
}
private void applyB128(byte[] data)
{
var betaDisk = _spec.BusManager.FindDevice<IBetaDiskDevice>();
if (betaDisk != null)
{
int offset = 0;
int dwFlags = BitConverter.ToInt32(data, offset); offset += 4;
byte chNumDrives = data[offset]; offset += 1;
byte chSysReg = data[offset]; offset += 1;
byte chTrackReg = data[offset]; offset += 1;
byte chSectorReg = data[offset]; offset += 1;
byte chDataReg = data[offset]; offset += 1;
byte chStatusReg = data[offset]; offset += 1;
byte[] chRomData = new byte[data.Length-offset];
for (int i = 0; i < chRomData.Length; i++)
chRomData[i] = data[i + offset];
if (chRomData.Length > 0 && (dwFlags & ZXSTBETAF_COMPRESSED) != 0)
{
byte[] dataDecompressed = new byte[0x4000];
using (MemoryStream ms = new MemoryStream(chRomData))
{
ZipLib.Zip.Compression.Streams.InflaterInputStream inflater = new ZipLib.Zip.Compression.Streams.InflaterInputStream(ms);
inflater.Read(dataDecompressed, 0, dataDecompressed.Length);
}
chRomData = dataDecompressed;
}
betaDisk.DOSEN = (dwFlags & ZXSTBETAF_PAGED) != 0;
}
}
