// Define constants for the number of columns and rows in the Kodak CCD image
localparam COLUMNS = 4096;
localparam ROWS    = 2048;

// Declare input wire signals
reg clk, rst; // clock and reset signals
wire [COLUMNS-1:0] data_in; // input data signal from Kodak CCD

// Declare output wire signals
wire [ROWS*COLUMNS-1:0] data_out; // output data signal to LiteX SoC

// Create a reg array to hold the entire image
reg2block ram (CLK, RST, ADDR, DIN, DOUT);

always @(posedge CLK) begin
    if (!rst) begin
        // Initialize RAM contents when reset is asserted
        for (integer i = 0; i < COLUMNS * ROWS; i++) begin
            ram[i] <= 1'b0;
        end
    end else begin
        // Read data from Kodak CCD into RAM
        for (integer j = 0; j < ROWS; j++) begin
            for (integer i = 0; i < COLUMNS; i++) begin
                if (data_in[i]) begin
                    // Store pixel value in RAM at address (j, i)
                    ram[j*COLUMNS + i] <= data_in[i];
                end
            end
        end
    end
end

// Connect RAM outputs to LiteX SoC
assign data_out = ram_o;