negative numbers representation in VHDL

[shaiko]

What kind of notation system does the VHDL "signed" type use? Is it two's complement or one's complement?

For example:

if "00010000" is 16. How will (-)16 be presented in binary?

 

[std_match]

It is two's complement. -16 as 8-bit "signed" is "11110000".