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21 September, 19:31

What is a single instruction that inverts bits 5 and 6 in bl without changing any other bits?

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  1. 21 September, 19:52
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    You want to XOR the register contents with the value 0x60 (a hex word with bits 5 and 6 set).

    Not sure how to write that in x86 assembler, is it:

    xor bl, 0x60
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