// Generates static relocation unit from or to static
public RelocationUnit(Region region, ROM rom, bool isFromStatic)
{
int segmentedAddress = rom.GetSegmentedAddress(region.romStart);
if (segmentedAddress == -1)
{
throw new ArgumentException("Failed to get segmented address");
}
int segment = SegmentedAddressHelper.GetSegment(segmentedAddress);
int staticSegmentedAddress = SegmentedAddressHelper.GetStaticSegmentedAddress(segment);
length = region.length;
if (!isFromStatic)
{
start = segmentedAddress;
newStart = staticSegmentedAddress;
}
else
{
start = staticSegmentedAddress;
newStart = segmentedAddress;
}
}
public int GetROMAddress(int segmentedAddress)
{
int segment = SegmentedAddressHelper.GetSegment(segmentedAddress);
int offset = SegmentedAddressHelper.GetOffset(segmentedAddress);
if (segment > 0x20)
{
return(-1);
}
if (segments[segment] == null)
{
return(-1);
}
return(segments[segment].start + offset);
}
public int GetSegmentedAddress(int romAddress)
{
for (int currentSegment = 0; currentSegment < 0x20; currentSegment++)
{
SegmentDescriptor descriptor = segments[currentSegment];
if (descriptor == null)
{
continue;
}
if (descriptor.start <= romAddress && romAddress <= descriptor.start + descriptor.length)
{
return(SegmentedAddressHelper.GetSegmentedAddress(currentSegment, romAddress - descriptor.start));
}
}
return(-1);
}
private static void RegionParse_cmd06(ROM rom, List <Region> regions, RegionParseState state)
{
int segmentedAddress = rom.Read32(4);
int segment = SegmentedAddressHelper.GetSegment(segmentedAddress);
// 06 command will return one way or another, so just wait for it
if (segment != 0x19)
{
return;
}
CutRegion(rom, regions, state, rom.offset, state.regionState);
state.retAddressStack.Push(rom.offset + rom.Read8(1));
int offset = (int)rom.GetROMAddress(segmentedAddress);
rom.offset = offset - 8; // kostul for next cmd switching
state.start = offset;
}