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Altera_Forum's avatar
Altera_Forum
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10 years ago

Assign all zeroes to unsigned

Hi, I want to assign all zeroes to an unsigned signal. I've been using ( others => '0' ) for STD_LOGIC_VECTOR signals, but when i attempt to do the same for unsigned, i get an error: Error (105...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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You can't do that because 0 is an integer. Also note that unsigned is binary, not base 10.

You need to convert to an unsigned from an integer.

Op <= to_unsigned(0, op'length);

This should also work.

Op <= (others => '0');

The ops problem sounds like a syntax error. Why not post the actual code?

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Hi, I have no idea what the problem was but i reverted my code to a previous save and made my changes one by one and it worked! i wish i knew what caused the problem in the first place, but i cant even seem to reproduce it now.