CODEWITHSUNDEEP
arraysmemorysystem-verilog
Ryan McClure
Ryan McClure

Reputation: 1223

Access 2D packed array as if it were one dimensional

I have a packed array which is used to hold a series of words, like this:

reg [31:0][79:0] H;

As I understand, packed arrays are stored as a contiguous block of memory, and so I'm wondering if there is a way to access the values as if they were declared in a 1 dimensional array like this:

H[500] <= x;

Which would be the same as H[11][15] <= x.Is this possible? I need to fill various blocks within the array that are not at word boundaries, so this would make things much easier.

Upvotes: 0

Views: 76

Answers (1)

dave_59
dave_59

Reputation: 42623

What you need is a packed union

union packed {
         logic [31:0][79:0] words;
         lofic [0:2559]     bits;
         logic [7:0][319:0] bytes;
} H;

Then the following would be equivalent if the math is correct 

H.words[11][15] <= x;
H.bits[500] <=x;

Upvotes: 2

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