array problems

[Matt North]

Hi,

I have an array:

variable ram: array_t;

where:

type array_t is array (0 to 127, 0 to 127) of std_logic;

i now need to load an address of ram:

ram(to_integer(addr)) := data;

How do i get 'data' to be of a type that matches 'array_t',
std_logic_vector(0 to 127) or unsigned(0 to 127) does not work.

i cant change array_t to:

type array_t is array (0 to 127) of std_logic_vector(0 to 127);

because i need to index the array in the following form:

result(y,x):=ram(x,y);

Thanks,
Matt

 

[Mike Treseler]

"Matt North" wrote

I have an array:
variable ram: array_t;
where:
type array_t is array (0 to 127, 0 to 127) of std_logic;

That's a 128 by 128 block of bits.
Draw it on graph paper and mark
the data words and assign each a "ram" address.
There is more than one way to do this.

because i need to index the array in the following form:
result(y,x):=ram(x,y);

That's an assignment of a single bit.
Maybe that's not what you really want.

-- Mike Treseler