Question: For these hex values, OxAB and Ox3, why is OxAB - Ox3 = OxA8 instead of OxB8. Where's the error in doing this the twos

For these hex values, OxAB and Ox3, why is OxAB - Ox3 = OxA8 instead of OxB8.

Where's the error in doing this the twos complement way?

OxAB = 1010 1011

Ox3 = 0011

Ox3 twos complement = 1100, then add 1 => 1101

So 1010 1011 + 1101

1 111

1010 1011

+ 1101

1011 1000

=> OxB8

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