Created
September 24, 2018 23:19
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import struct, sys | |
p = ("\x30\x42", "\x42\x30") | |
pnewdata = "\x56\x42" | |
penddata = "\x56\x30" | |
def add_kernel_byte(c): | |
s = pnewdata | |
c = ord(c) | |
csum = 1 | |
for i in xrange(8): | |
bit = (c >> i) & 1 | |
s += p[bit] | |
csum ^= bit | |
s += p[csum] | |
return s | |
def add_loader_byte(c): | |
s = "" | |
c = ord(c) | |
for i in xrange(8): | |
bit = (c >> i) & 1 | |
s += "\x26\x58"[bit] | |
return s | |
def add_kernel_block(data, headersize, pausesize): | |
s = "\x30" * headersize | |
for c in data: | |
s += add_kernel_byte(c) | |
s += "\x30" * 0x301 | |
for c in data.replace("\x89\x88\x87\x86\x85\x84\x83\x82\x81", "\x09\x08\x07\x06\x05\x04\x03\x02\x01"): | |
s += add_kernel_byte(c) | |
s += "\x00" + struct.pack("<I", pausesize)[0:3] | |
return s | |
def add_loader_block(data, pausesize): | |
s = "" | |
for i in xrange(32): | |
s += add_loader_byte("\x01") | |
s += "\x58" | |
for c in data: | |
s += add_loader_byte(c) | |
s += "\x00" + struct.pack("<I", pausesize)[0:3] | |
return s | |
f = open("P0001014.A44", "rb") | |
f.read(512) | |
tapdata = "" | |
datablocks = [] | |
while True: | |
header = f.read(10) | |
if len(header) == 0: | |
break | |
dunno1, dunno2, dunno3, sz, dunno4 = struct.unpack(">HHHHH", header) | |
print "%x %x %x %x %x" % (dunno1, dunno2, dunno3, sz, dunno4) | |
if sz < 10: | |
print "TOO SMALL" | |
break | |
data = f.read(sz - 10) | |
datablocks.append(data) | |
tapdata = add_kernel_block(datablocks[0], 0x6a00, 320000) | |
tapdata += add_kernel_block(datablocks[1], 0x2000, 2280000) | |
tapdata += add_loader_block(datablocks[2], 2400000) | |
tapdata += add_loader_block(datablocks[3], 2380000) | |
tapdata += add_loader_block(datablocks[4], 2380000) | |
tapdata += add_loader_block(datablocks[5], 2380000) | |
tapdata += add_loader_block(datablocks[6], 9120000) | |
tapdata += add_kernel_block(datablocks[7], 0x2000, 320000) | |
tapdata += add_kernel_block(datablocks[8], 0x2000, 2300000) | |
tapdata += add_loader_block(datablocks[9], 2380000) | |
tapdata += add_loader_block(datablocks[10], 2380000) | |
tapdata += add_loader_block(datablocks[11], 4926240) | |
of = open("output.tap", "wb") | |
of.write("C64-TAPE-RAW\x01\x00\x00\x00" + struct.pack("<I", len(tapdata)) + tapdata) | |
of.close() |
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