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https://github.com/a2-4am/passport.py.git
synced 2024-06-15 20:29:28 +00:00
various speed improvements
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@ -2,6 +2,7 @@ from passport.loggers import *
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from passport.rwts import *
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from passport.patchers import *
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from passport.strings import *
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from passport.constants import *
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from passport.util import *
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from passport import wozardry
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import bitarray
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@ -165,32 +166,16 @@ class BasePassportProcessor: # base class
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def IDDiversi(self, t00s00):
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"""returns True if T00S00 is Diversi-DOS bootloader, or False otherwise"""
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return find.at(0xF1, t00s00,
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b'\xB3\xA3\xA0\xD2\xCF\xD2\xD2\xC5'
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b'\x8D\x87\x8D')
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return find.at(0xF1, t00s00, kIDDiversiDOSBootloader)
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def IDProDOS(self, t00s00):
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"""returns True if T00S00 is ProDOS bootloader, or False otherwise"""
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return find.at(0x00, t00s00,
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b'\x01'
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b'\x38'
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b'\xB0\x03'
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b'\x4C')
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return find.at(0x00, t00s00, kIDProDOSBootloader)
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def IDPascal(self, t00s00):
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"""returns True if T00S00 is Pascal bootloader, or False otherwise"""
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if find.wild_at(0x00, t00s00,
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b'\x01'
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b'\xE0\x60'
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b'\xF0\x03'
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b'\x4C' + find.WILDCARD + b'\x08'):
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return True
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return find.at(0x00, t00s00,
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b'\x01'
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b'\xE0\x70'
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b'\xB0\x04'
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b'\xE0\x40'
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b'\xB0')
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return find.wild_at(0x00, t00s00, kIDPascalBootloader1) or \
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find.at(0x00, t00s00, kIDPascalBootloader2)
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def IDDavidDOS(self, t00s00):
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"""returns True if T00S00 is David-DOS II bootloader, or False otherwise"""
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@ -683,30 +668,23 @@ class BasePassportProcessor: # base class
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# .woz files correctly
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self.tracks[physical_track_num] = self.g.disk_image.seek(physical_track_num)
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self.g.logger.debug("Seeking to track %s" % hex(self.g.track))
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try_again = True
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tried_reseek = False
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while try_again:
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try_again = False
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while True:
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physical_sectors = self.rwts.decode_track(self.tracks[physical_track_num], logical_track_num, self.burn)
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if len(physical_sectors) == self.rwts.sectors_per_track:
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# TODO this is bad, we should just ask the RWTS object if we decoded enough sectors,
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# so that SunburstRWTS can override the logic on track 0x11
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continue
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if self.rwts.enough(logical_track_num, physical_sectors):
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break
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if supports_reseek and not tried_reseek:
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self.tracks[physical_track_num] = self.g.disk_image.reseek(physical_track_num)
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self.g.logger.debug("Reseeking to track %s" % hex(self.g.track))
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tried_reseek = True
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try_again = True
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continue
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self.g.logger.debug("found %d sectors" % len(physical_sectors))
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if self.rwts.__class__ is SunburstRWTS and logical_track_num == 0x11:
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# TODO this is bad, see above
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continue
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if (0x0F not in physical_sectors) and self.SkipTrack(logical_track_num, self.tracks[physical_track_num]):
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physical_sectors = None
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continue
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break
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if self.g.tried_univ:
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if logical_track_num == 0x22 and (0x0F not in physical_sectors):
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self.g.logger.PrintByID("fail")
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self.g.logger.PrintByID("fatal220f")
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return False
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else:
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@ -716,11 +694,9 @@ class BasePassportProcessor: # base class
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self.g.logger.PrintByID("switch", {"sector":0x0F}) # TODO find exact sector
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self.rwts = UniversalRWTS(self.g)
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self.g.tried_univ = True
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try_again = True
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continue
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if logical_track_num == 0 and type(self.rwts) != UniversalRWTSIgnoreEpilogues:
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self.rwts = UniversalRWTSIgnoreEpilogues(self.g)
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try_again = True
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continue
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self.g.logger.PrintByID("fail")
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return False
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@ -10,30 +10,29 @@ class A2RImage:
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self.filename = filename
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self.tracks = collections.OrderedDict()
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self.a2r_image = a2rchery.A2RReader(filename, stream)
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self.speed = 0
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def to_bits(self, flux_record):
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"""|flux_record| is a dictionary of 'capture_type', 'data_length', 'tick_count', and 'data'"""
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bits = bitarray.bitarray()
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estimated_track_length = 0
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if not flux_record or flux_record["capture_type"] != a2rchery.kCaptureTiming:
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return bits, estimated_track_length, 0
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ticks = 0
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flux_total = 0
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fluxxen = flux_record["data"]
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speeds = [(len([1 for i in fluxxen if i%t==0]), t) for t in range(0x1c,0x25)]
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return bits
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fluxxen = flux_record["data"][1:]
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if not self.speed:
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speeds = [(len([1 for i in fluxxen[:8192] if i%t==0]), t) for t in range(0x1e,0x23)]
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speeds.sort()
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speed = speeds[-1][1]
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for flux_value in fluxxen[1:]:
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ticks += flux_value
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if not estimated_track_length and ticks > flux_record["tick_count"]:
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estimated_track_length = len(bits)
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self.speed = speeds[-1][1]
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speed = self.speed
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flux_total = flux_start = -speed//2
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for flux_value in fluxxen:
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flux_total += flux_value
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if flux_value == 0xFF:
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continue
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bits.extend([0] * ((flux_total - speed//2) // speed))
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bits.append(1)
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flux_total = 0
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return bits, estimated_track_length, speed
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if flux_total >= speed:
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bits.extend("0" * (flux_total // speed))
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bits.extend("1")
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flux_total = flux_start
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return bits
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def seek(self, track_num):
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if type(track_num) != float:
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@ -48,16 +47,20 @@ class A2RImage:
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# (if the caller determines that they're not good, it will call reseek()
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# which is smarter but takes longer)
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bits = bitarray.bitarray()
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for flux_record in self.a2r_image.flux.get(location, [{}])[:1]:
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bits, track_length, speed = self.to_bits(flux_record)
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if location in self.a2r_image.flux:
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bits = self.to_bits(self.a2r_image.flux[location][0])
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self.tracks[location] = Track(bits, len(bits))
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return self.tracks[location]
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def reseek(self, track_num):
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location = int(track_num * 4)
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all_bits = bitarray.bitarray()
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for flux_record in self.a2r_image.flux.get(location, [{}]):
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bits, track_length, speed = self.to_bits(flux_record)
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all_bits.extend(bits)
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# reset cached speed so we'll recalculate it
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self.speed = 0
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# read the rest of the flux records and concatenate them on the end
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# of the existing bitstream (this assumes you've called seek() before
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# on this track)
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all_bits = self.tracks[location].bits
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for flux_record in self.a2r_image.flux[location][1:]:
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all_bits.extend(self.to_bits(flux_record))
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self.tracks[location] = Track(all_bits, len(all_bits))
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return self.tracks[location]
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22
passport/constants.py
Normal file
22
passport/constants.py
Normal file
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@ -0,0 +1,22 @@
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from passport.util import *
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kIDDiversiDOSBootloader = bytes.fromhex("B3 A3 A0 D2 CF D2 D2 C5 8D 87 8D")
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kIDProDOSBootloader = bytes.fromhex(
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"01"
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"38" # SEC
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"B0 03" # BCS +3
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"4C") # JMP
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kIDPascalBootloader1 = bytes.fromhex(
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"01"
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"E0 60" # CPX #$60
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"F0 03" # BEQ +3
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"4C" + find.WILDSTR + "08") # JMP $08**
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kIDPascalBootloader2 = bytes.fromhex(
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"01"
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"E0 70" # CPX #$70
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"B0 04" # BCS +4
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"E0 40" # CPX #$40
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"B0") # BCS
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@ -204,6 +204,9 @@ class RWTS:
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break
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return sectors
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def enough(self, logical_track_num, physical_sectors):
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return len(physical_sectors) == self.sectors_per_track
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from .universal import *
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from .dos33 import *
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from .sunburst import *
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@ -16,7 +16,17 @@ class SunburstRWTS(DOS33RWTS):
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self.data_prologue[1],
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self.data_prologue_third_nibble_by_track[logical_track_num])
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DOS33RWTS.seek(self, logical_track_num)
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if logical_track_num == 0x11:
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self.sector_order = (0x00, 0x07, 0x08, 0x06, 0x0D, 0x05, 0x0C, 0x04, 0x0B, 0x03, 0x0A, 0x02, 0x09, 0x01, 0x08, 0x0F)
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else:
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self.sector_order = self.kDefaultSectorOrder16
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if logical_track_num >= 0x11:
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return logical_track_num + 0.5
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else:
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return float(logical_track_num)
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def enough(self, logical_track_num, physical_sectors):
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if logical_track_num == 0x11:
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return len(physical_sectors) >= 14
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return DOS33RWTS.enough(self, logical_track_num, physical_sectors)
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@ -1,4 +1,4 @@
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__date__ = "2019-02-01"
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__date__ = "2019-02-02"
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STRINGS = {
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"header": "Passport.py by 4am (" + __date__ + ")\n", # max 32 characters
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@ -1,6 +1,7 @@
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import re
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WILDCARD = b'\x97'
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WILDSTR = "97"
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def wild(source_bytes, search_bytes):
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"""Search source_bytes (bytes object) for the first instance of search_bytes (bytes_object). search_bytes may contain WILDCARD, which matches any single byte (like "." in a regular expression). Returns index of first match, or -1 if no matches."""
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