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Altera_Forum's avatar
Altera_Forum
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12 years ago

VHDL-2008 support for unconstrained arrays in records

Quartus II does not support unconstrained arrays in records, which would be useful to define a complex-valued data type for signed values, eg., -- A complex-valued signed number type complex...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

I just found that records with unconstrained elements is not supported in Quartus 14.0...I had high hopes since arrays of unconstraned elements is supported.

In VHDL-2008 record elements can be constrained while defining signals of the type.

Hopefully this will be supported soon... 


  TYPE record_type_t IS RECORD
    data   : STD_LOGIC_VECTOR;
    enable : STD_LOGIC;
  END RECORD;
  SIGNAL a_record : record_type_t(data(7 DOWNTO 0));
  SIGNAL b_record : record_type_t(data(6 DOWNTO 0));