/// <summary>
/// Load the RDS and RSC ROM images from disk.
/// There is no error or sanity checking done here (yet). If those files
/// are missing or corrupt, hilarity will ensue.
/// </summary>
private void LoadRasterOpROMs()
{
// RDS is a lookup table with a 9-bit index, returning a CombinerFlag
FileStream fs = new FileStream(Paths.BuildPROMPath("rds00emu.rom"), FileMode.Open);
for (int i = 0; i < 512; i++)
{
_rdsTable[i] = (CombinerFlags)fs.ReadByte();
}
fs.Close();
#if TRACING_ENABLED
if (Trace.TraceOn)
{
Trace.Log(LogType.EmuState, "Initialized RDS ROM lookup table.");
}
#endif
// RSC is a lookup table with an 7-bit index, returning an EdgeStrategy
fs = new FileStream(Paths.BuildPROMPath("rsc03emu.rom"), FileMode.Open);
for (int i = 0; i < 128; i++)
{
_rscTable[i] = (EdgeStrategy)fs.ReadByte();
}
fs.Close();
#if TRACING_ENABLED
if (Trace.TraceOn)
{
Trace.Log(LogType.EmuState, "Initialized RSC ROM lookup table.");
}
#endif
}
/// <summary>
/// Load the BKM16 ROM image from disk.
/// </summary>
private void LoadBookmarkROM()
{
// BKM is a lookup table with an 8-bit index, returning an 8-bit value
FileStream fs = new FileStream(Paths.BuildPROMPath("bkm16emu.rom"), FileMode.Open);
for (int i = 0; i < 256; i++)
{
// Split the result byte into fields once, rather than on every lookup :-)
_bkmTable[i] = new BookmarkEntry((byte)fs.ReadByte());
}
fs.Close();
#if TRACING_ENABLED
if (Trace.TraceOn)
{
Trace.Log(LogType.EmuState, "Initialized BKM ROM lookup table.");
}
#endif
}
public Z80Debugger()
{
LoadZ80Source(Paths.BuildPROMPath("pz80.lst"));
}