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mem = bytes()
for i in range(4):
mem += open(f"build/memory{i+1}.bin", "rb").read()
offset = 0x80
lsfr = mem[0xff]
while True:
bits = [int(v) for v in bin(lsfr)[2:].zfill(8)]
bits = bits[7:] + bits[0:7]
bits[0] ^= bits[7-2]
bits[0] ^= bits[7-5]
lsfr = sum([2**(7-i) if v else 0 for i,v in enumerate(bits)])
b = mem[offset + (lsfr & (0xff >> 3))]
fb = b ^ lsfr
print(chr(fb), end="")
if fb == 0:
break
print()
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