Verilog coding issue

Couple of different ways to do it, either all in verilog or with using a text file to init the memory contents.

So you can do this in verilog to initialize the block memory device memdat from the contents of a file:

    reg    memdat;
    initial $readmemb("meminit.txt", memdat, 0, 4095);

where the file meminit.txt contains 4096 lines of data (in this case 12bit binary strings since I used $readmemb):

000000000000
011000110001
111111000001
...
111111111111

or instead of that initial block that uses an external text file, you could use plain old verilog assignment statements:

    initial
        begin
        memdat = 12'hFFF;
        memdat = 12'b0000_1111_0000;
        ...
        memdat = 12'd1234;
        end

or a more complex set of verilog code:

    initial
        begin : init_block
        integer i;
        for (i = 0; i < 4096; i = i+1) memdat = 12'h000;
        memdat = 12'd1234;
        ... etc
        end