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Altera_Forum
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15 years ago

2's complement consideration

Hello everyone! I have some considerations about the implementation of twos complement in a filter/decimation design. The ADC used in the design is AD7401, which had also been discussed ea...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Ok, thanks to all of you!

XORing with x"8000" is actually the same as substracting 32768!

Just tell me what types to use: it seems to work with std_logic_vector and the unsigned.all library. Should I switch to numeric_std? Should I make signed signals?