7 lines
186 B
Python
7 lines
186 B
Python
with open("bootrom", "rb") as f:
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b = bytearray(f.read())
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# compute the checksum and store a byte to
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b[-1] = 256 - sum(b[0:-1]) & 0xff
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with open("bootrom", "wb") as f:
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f.write(b)
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