I have a package which has an array.
type reg_array_type is array (1 downto 0) of std_logic_vector(7 downto 0);
constant REG_ARRAY_C : reg_array_type := (
x"00",
x"01";
I'm using this package in
data_write <= REG_ARRAY_C(conv_integer(unsigned(index)));
What I'm trying to do is access the data from the package (x"00", x"01") individually and store it to data_write. In my simulation however only x"01" is being stored there.
How do I access x"00" from the array to store it first in data_write then store x"01"?
If you want to access the first byte then you just have to write...
data_write <= REG_ARRAY_C(1); -- data_write is assigned x"00"
... And the second one :
data_write <= REG_ARRAY_C(0); -- data_write is assigned x"01"
If I can give you an advice, I prefer to use TO instead of DOWNTO when declaring an array since it is more understandable: the first byte is the 1, the last one is N like :
type my_array is array (1 TO N) of std_logic_vector(7 downto 0);
Of course that's just a suggestion