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Added boot segment parsing for raw boot disks (no assumptions about valid DOS flags in the boot sector)

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Rob McMullen 2016-03-02 14:25:12 -08:00
parent 320c5af153
commit 8918ebf3c6
1 changed files with 20 additions and 1 deletions
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21
atrcopy/diskimages.py
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@ -202,8 +202,27 @@ class DiskImageBase(object):
self.segments.extend(self.get_directory_segments()) self.segments.extend(self.get_directory_segments())
self.segments.extend(self.get_file_segments()) self.segments.extend(self.get_file_segments())
boot_record_type = np.dtype([
('BFLAG', 'u1'),
('BRCNT', 'u1'),
('BLDADR', '<u2'),
('BWTARR', '<u2'),
])
def get_boot_segments(self): def get_boot_segments(self):
return [] data, style = self.get_sectors(1)
values = data[0:6].view(dtype=self.boot_record_type)[0]
flag = int(values[0])
segments = []
if flag == 0:
num = int(values[1])
addr = int(values[2])
bytes, style = self.get_sectors(1, num)
header = ObjSegment(bytes[0:6], style[0:6], 0, 0, addr, addr + 6, name="Boot Header")
sectors = ObjSegment(bytes, style, 0, 0, addr, addr + len(bytes), name="Boot Sectors")
code = ObjSegment(bytes[6:], style[6:], 0, 0, addr + 6, addr + len(bytes), name="Boot Code")
segments = [sectors, header, code]
return segments
def get_vtoc_segments(self): def get_vtoc_segments(self):
return [] return []