Subversion Repositories hdl-deflate

// File: deflate.v
// Generated by MyHDL 0.10
// Date: Thu Dec 20 18:23:02 2018
 
 
`timescale 1ns/10ps
 
module deflate (
    i_mode,
    o_done,
    i_data,
    o_iprogress,
    o_oprogress,
    o_byte,
    i_addr,
    clk,
    reset
);
// Deflate (de)compress
// 
// Ports:
 
input [2:0] i_mode;
output o_done;
reg o_done;
input [7:0] i_data;
output [12:0] o_iprogress;
reg [12:0] o_iprogress;
output [12:0] o_oprogress;
reg [12:0] o_oprogress;
output [7:0] o_byte;
reg [7:0] o_byte;
input [12:0] i_addr;
input clk;
input reset;
 
reg [18:0] wleaf;
reg [9:0] step;
reg static;
reg [4:0] state;
reg [8:0] spread_i;
reg [9:0] spread;
reg [9:0] reverse;
reg [7:0] orbyte;
reg [12:0] oraddr;
reg [12:0] offset;
reg [7:0] obyte;
reg [7:0] ob1;
reg [12:0] oaddr;
reg [8:0] numLiterals;
reg [5:0] numDistance;
reg [8:0] numCodeLength;
reg [2:0] nb;
reg [4:0] minBits;
reg [2:0] method;
reg [4:0] maxBits;
reg [8:0] lwaddr;
reg [12:0] length;
reg [18:0] leaf;
reg [14:0] lastToken;
reg [15:0] ladler1;
reg [12:0] isize;
reg [9:0] instantMaxBit;
reg [14:0] instantMask;
reg [8:0] howOften;
reg flush;
reg final;
reg filled;
reg [2:0] doo;
reg do_compress;
reg [12:0] do;
reg [2:0] dio;
reg [12:0] di;
reg [4:0] d_maxBits;
reg [9:0] d_instantMaxBit;
reg [14:0] d_instantMask;
reg [8:0] cur_static;
reg signed [7:0] cur_search;
reg cur_next;
reg [12:0] cur_i;
reg signed [7:0] cur_dist;
reg [12:0] cur_cstatic;
reg [9:0] cur_HF1;
reg [7:0] copy1;
reg [14:0] code;
reg [3:0] bits;
reg [8:0] b_numCodeLength;
wire [31:0] b41;
reg [7:0] b4;
reg [7:0] b3;
reg [7:0] b2;
reg [7:0] b1;
reg [15:0] adler2;
reg [15:0] adler1;
reg [7:0] oram [0:8192-1];
reg [9:0] nextCode [0:15-1];
reg [18:0] leaves [0:512-1];
reg [7:0] iram [0:128-1];
reg [3:0] distanceLength [0:32-1];
reg [18:0] d_leaves [0:128-1];
reg [8:0] code_bits [0:288-1];
reg [3:0] codeLength [0:290-1];
reg [8:0] bitLengthCount [0:16-1];
 
assign b41[32-1:24] = b4;
assign b41[24-1:16] = b3;
assign b41[16-1:8] = b2;
assign b41[8-1:0] = b1;
 
task MYHDL3_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL77_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL4_get4;
    input boffset;
    input width;
begin: MYHDL78_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL4_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL78_RETURN;
end
endfunction
 
function integer MYHDL5_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL79_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL5_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL79_RETURN;
end
endfunction
 
task MYHDL6_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL80_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
task MYHDL7_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL81_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL8_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL82_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL8_get4 = ($signed($signed({1'b0, b41}) >>> ($signed({1'b0, dio}) + boffset)) & ((1 << width) - 1));
    disable MYHDL82_RETURN;
end
endfunction
 
task MYHDL9_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL83_RETURN
    nshift = $signed(($signed({1'b0, dio}) + width) >>> 3);
    o_iprogress <= di;
    dio <= (($signed({1'b0, dio}) + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL10_put;
    input d;
    integer d;
    input width;
    integer width;
begin: MYHDL84_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    MYHDL10_put = ((ob1 | (d << doo)) & 255);
    disable MYHDL84_RETURN;
end
endfunction
 
task MYHDL11_put_adv;
    input d;
    integer d;
    input width;
    integer width;
    reg pshift;
    integer carry;
    integer doo_next;
begin: MYHDL85_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    pshift = ((doo + width) > 8);
    if (pshift) begin
        carry = ($signed({1'b0, width}) - (8 - $signed({1'b0, doo})));
        ob1 <= $signed($signed({1'b0, d}) >>> ($signed({1'b0, width}) - carry));
    end
    else begin
        ob1 <= (ob1 | (d << doo));
    end
    do <= (do + pshift);
    o_oprogress <= (do + pshift);
    doo_next = ((doo + width) & 7);
    if ((doo_next == 0)) begin
        flush <= 1'b1;
    end
    doo <= doo_next;
end
endtask
 
task MYHDL12_do_flush;
begin: MYHDL86_RETURN
    flush <= 1'b0;
    ob1 <= 0;
    o_oprogress <= (do + 1);
    do <= (do + 1);
end
endtask
 
function integer MYHDL13_put;
    input [9-1:0] d;
    input [4-1:0] width;
begin: MYHDL87_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    MYHDL13_put = ((ob1 | (d << doo)) & 255);
    disable MYHDL87_RETURN;
end
endfunction
 
task MYHDL14_put_adv;
    input [9-1:0] d;
    input [4-1:0] width;
    reg pshift;
    integer carry;
    integer doo_next;
begin: MYHDL88_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    pshift = ((doo + width) > 8);
    if (pshift) begin
        carry = ($signed({1'b0, width}) - (8 - $signed({1'b0, doo})));
        ob1 <= $signed($signed({1'b0, d}) >>> ($signed({1'b0, width}) - carry));
    end
    else begin
        ob1 <= (ob1 | (d << doo));
    end
    do <= (do + pshift);
    o_oprogress <= (do + pshift);
    doo_next = ((doo + width) & 7);
    if ((doo_next == 0)) begin
        flush <= 1'b1;
    end
    doo <= doo_next;
end
endtask
 
task MYHDL15_do_flush;
begin: MYHDL89_RETURN
    flush <= 1'b0;
    ob1 <= 0;
    o_oprogress <= (do + 1);
    do <= (do + 1);
end
endtask
 
function integer MYHDL16_rev_bits;
    input [13-1:0] b;
    input nb;
    integer nb;
    integer r;
begin: MYHDL90_RETURN
    if ((b >= (1 << nb))) begin
        $finish;
        $write("too few bits");
        $write("\n");
    end
    r = (((((((((((((((((b >>> 14) & 1) << 0) | (((b >>> 13) & 1) << 1)) | (((b >>> 12) & 1) << 2)) | (((b >>> 11) & 1) << 3)) | (((b >>> 10) & 1) << 4)) | (((b >>> 9) & 1) << 5)) | (((b >>> 8) & 1) << 6)) | (((b >>> 7) & 1) << 7)) | (((b >>> 6) & 1) << 8)) | (((b >>> 5) & 1) << 9)) | (((b >>> 4) & 1) << 10)) | (((b >>> 3) & 1) << 11)) | (((b >>> 2) & 1) << 12)) | (((b >>> 1) & 1) << 13)) | (((b >>> 0) & 1) << 14));
    r = r >>> (15 - $signed({1'b0, nb}));
    MYHDL16_rev_bits = r;
    disable MYHDL90_RETURN;
end
endfunction
 
function integer MYHDL17_put;
    input d;
    integer d;
    input width;
    integer width;
begin: MYHDL91_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if ((d > ((1 << width) - 1))) begin
        $finish;
    end
    MYHDL17_put = (($signed({1'b0, ob1}) | (d << $signed({1'b0, doo}))) & 255);
    disable MYHDL91_RETURN;
end
endfunction
 
task MYHDL18_put_adv;
    input d;
    integer d;
    input width;
    integer width;
    reg pshift;
    integer carry;
    integer doo_next;
begin: MYHDL92_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if ((d > ((1 << width) - 1))) begin
        $finish;
    end
    pshift = (($signed({1'b0, doo}) + width) > 8);
    if (pshift) begin
        carry = (width - (8 - $signed({1'b0, doo})));
        ob1 <= $signed(d >>> (width - carry));
    end
    else begin
        ob1 <= ($signed({1'b0, ob1}) | (d << $signed({1'b0, doo})));
    end
    do <= (do + pshift);
    o_oprogress <= (do + pshift);
    doo_next = (($signed({1'b0, doo}) + width) & 7);
    if ((doo_next == 0)) begin
        flush <= 1'b1;
    end
    doo <= doo_next;
end
endtask
 
function integer MYHDL19_put;
    input [9-1:0] d;
    input [4-1:0] width;
begin: MYHDL93_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    MYHDL19_put = ((ob1 | (d << doo)) & 255);
    disable MYHDL93_RETURN;
end
endfunction
 
task MYHDL20_put_adv;
    input [9-1:0] d;
    input [4-1:0] width;
    reg pshift;
    integer carry;
    integer doo_next;
begin: MYHDL94_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    pshift = ((doo + width) > 8);
    if (pshift) begin
        carry = ($signed({1'b0, width}) - (8 - $signed({1'b0, doo})));
        ob1 <= $signed($signed({1'b0, d}) >>> ($signed({1'b0, width}) - carry));
    end
    else begin
        ob1 <= (ob1 | (d << doo));
    end
    do <= (do + pshift);
    o_oprogress <= (do + pshift);
    doo_next = ((doo + width) & 7);
    if ((doo_next == 0)) begin
        flush <= 1'b1;
    end
    doo <= doo_next;
end
endtask
 
function integer MYHDL21_put;
    input [9-1:0] d;
    input [4-1:0] width;
begin: MYHDL95_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    MYHDL21_put = ((ob1 | (d << doo)) & 255);
    disable MYHDL95_RETURN;
end
endfunction
 
task MYHDL22_put_adv;
    input [9-1:0] d;
    input [4-1:0] width;
    reg pshift;
    integer carry;
    integer doo_next;
begin: MYHDL96_RETURN
    if ((width > 9)) begin
        $finish;
    end
    if (($signed({1'b0, d}) > ((1 << width) - 1))) begin
        $finish;
    end
    pshift = ((doo + width) > 8);
    if (pshift) begin
        carry = ($signed({1'b0, width}) - (8 - $signed({1'b0, doo})));
        ob1 <= $signed($signed({1'b0, d}) >>> ($signed({1'b0, width}) - carry));
    end
    else begin
        ob1 <= (ob1 | (d << doo));
    end
    do <= (do + pshift);
    o_oprogress <= (do + pshift);
    doo_next = ((doo + width) & 7);
    if ((doo_next == 0)) begin
        flush <= 1'b1;
    end
    doo <= doo_next;
end
endtask
 
function integer MYHDL31_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL97_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL31_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL97_RETURN;
end
endfunction
 
function integer MYHDL32_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL98_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL32_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL98_RETURN;
end
endfunction
 
function integer MYHDL33_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL99_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL33_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL99_RETURN;
end
endfunction
 
function integer MYHDL34_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL100_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL34_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL100_RETURN;
end
endfunction
 
function integer MYHDL35_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL101_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL35_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL101_RETURN;
end
endfunction
 
function integer MYHDL36_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL102_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL36_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL102_RETURN;
end
endfunction
 
task MYHDL37_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL103_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL38_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL104_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL38_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL104_RETURN;
end
endfunction
 
task MYHDL39_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL105_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL40_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL106_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL40_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL106_RETURN;
end
endfunction
 
function integer MYHDL41_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL107_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL41_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL107_RETURN;
end
endfunction
 
function integer MYHDL42_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL108_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL42_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL108_RETURN;
end
endfunction
 
task MYHDL43_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL109_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL50_rev_bits;
    input [10-1:0] b;
    input [4-1:0] nb;
    integer r;
begin: MYHDL110_RETURN
    if ((b >= (1 << nb))) begin
        $finish;
        $write("too few bits");
        $write("\n");
    end
    r = (((((((((((((((((b >>> 14) & 1) << 0) | (((b >>> 13) & 1) << 1)) | (((b >>> 12) & 1) << 2)) | (((b >>> 11) & 1) << 3)) | (((b >>> 10) & 1) << 4)) | (((b >>> 9) & 1) << 5)) | (((b >>> 8) & 1) << 6)) | (((b >>> 7) & 1) << 7)) | (((b >>> 6) & 1) << 8)) | (((b >>> 5) & 1) << 9)) | (((b >>> 4) & 1) << 10)) | (((b >>> 3) & 1) << 11)) | (((b >>> 2) & 1) << 12)) | (((b >>> 1) & 1) << 13)) | (((b >>> 0) & 1) << 14));
    r = r >>> (15 - $signed({1'b0, nb}));
    MYHDL50_rev_bits = r;
    disable MYHDL110_RETURN;
end
endfunction
 
function integer MYHDL51_makeLeaf;
    input [9-1:0] lcode;
    input [4-1:0] lbits;
begin: MYHDL111_RETURN
    if ((lcode >= (1 << 10))) begin
        $finish;
    end
    if ((lbits >= (1 << 9))) begin
        $finish;
    end
    MYHDL51_makeLeaf = ((lcode << 9) | lbits);
    disable MYHDL111_RETURN;
end
endfunction
 
function integer MYHDL52_makeLeaf;
    input [9-1:0] lcode;
    input [4-1:0] lbits;
begin: MYHDL112_RETURN
    if ((lcode >= (1 << 10))) begin
        $finish;
    end
    if ((lbits >= (1 << 9))) begin
        $finish;
    end
    MYHDL52_makeLeaf = ((lcode << 9) | lbits);
    disable MYHDL112_RETURN;
end
endfunction
 
function integer MYHDL53_makeLeaf;
    input [9-1:0] lcode;
    input [4-1:0] lbits;
begin: MYHDL113_RETURN
    if ((lcode >= (1 << 10))) begin
        $finish;
    end
    if ((lbits >= (1 << 9))) begin
        $finish;
    end
    MYHDL53_makeLeaf = ((lcode << 9) | lbits);
    disable MYHDL113_RETURN;
end
endfunction
 
function integer MYHDL54_get4;
    input boffset;
    input [5-1:0] width;
begin: MYHDL114_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL54_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL114_RETURN;
end
endfunction
 
function integer MYHDL55_get_bits;
    input [19-1:0] aleaf;
begin: MYHDL115_RETURN
    MYHDL55_get_bits = ($signed({1'b0, aleaf}) & ((1 << 9) - 1));
    disable MYHDL115_RETURN;
end
endfunction
 
function integer MYHDL56_get_bits;
    input [19-1:0] aleaf;
begin: MYHDL116_RETURN
    MYHDL56_get_bits = ($signed({1'b0, aleaf}) & ((1 << 9) - 1));
    disable MYHDL116_RETURN;
end
endfunction
 
task MYHDL57_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL117_RETURN
    nshift = $signed(($signed({1'b0, dio}) + width) >>> 3);
    o_iprogress <= di;
    dio <= (($signed({1'b0, dio}) + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL58_get_code;
    input [19-1:0] aleaf;
begin: MYHDL118_RETURN
    MYHDL58_get_code = (aleaf >>> 9);
    disable MYHDL118_RETURN;
end
endfunction
 
function integer MYHDL59_get_code;
    input [19-1:0] aleaf;
begin: MYHDL119_RETURN
    MYHDL59_get_code = (aleaf >>> 9);
    disable MYHDL119_RETURN;
end
endfunction
 
function integer MYHDL60_get4;
    input boffset;
    integer boffset;
    input [5-1:0] width;
begin: MYHDL120_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL60_get4 = ($signed($signed({1'b0, b41}) >>> ($signed({1'b0, dio}) + boffset)) & ((1 << width) - 1));
    disable MYHDL120_RETURN;
end
endfunction
 
function integer MYHDL61_get_bits;
    input [19-1:0] aleaf;
begin: MYHDL121_RETURN
    MYHDL61_get_bits = ($signed({1'b0, aleaf}) & ((1 << 9) - 1));
    disable MYHDL121_RETURN;
end
endfunction
 
function integer MYHDL62_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL122_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL62_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL122_RETURN;
end
endfunction
 
function integer MYHDL63_get_code;
    input [19-1:0] aleaf;
begin: MYHDL123_RETURN
    MYHDL63_get_code = (aleaf >>> 9);
    disable MYHDL123_RETURN;
end
endfunction
 
function integer MYHDL64_get_bits;
    input [19-1:0] aleaf;
begin: MYHDL124_RETURN
    MYHDL64_get_bits = ($signed({1'b0, aleaf}) & ((1 << 9) - 1));
    disable MYHDL124_RETURN;
end
endfunction
 
function integer MYHDL65_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL125_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL65_get4 = ($signed($signed({1'b0, b41}) >>> ($signed({1'b0, dio}) + boffset)) & ((1 << width) - 1));
    disable MYHDL125_RETURN;
end
endfunction
 
function integer MYHDL66_get_bits;
    input [19-1:0] aleaf;
begin: MYHDL126_RETURN
    MYHDL66_get_bits = ($signed({1'b0, aleaf}) & ((1 << 9) - 1));
    disable MYHDL126_RETURN;
end
endfunction
 
task MYHDL67_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL127_RETURN
    nshift = $signed(($signed({1'b0, dio}) + width) >>> 3);
    o_iprogress <= di;
    dio <= (($signed({1'b0, dio}) + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
function integer MYHDL68_get4;
    input boffset;
    input width;
    integer width;
begin: MYHDL128_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL68_get4 = ((b41 >>> (dio + boffset)) & ((1 << width) - 1));
    disable MYHDL128_RETURN;
end
endfunction
 
function integer MYHDL69_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL129_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL69_get4 = ($signed($signed({1'b0, b41}) >>> ($signed({1'b0, dio}) + boffset)) & ((1 << width) - 1));
    disable MYHDL129_RETURN;
end
endfunction
 
function integer MYHDL70_rev_bits;
    input b;
    integer b;
    input nb;
    integer nb;
    integer r;
begin: MYHDL130_RETURN
    if ((b >= (1 << nb))) begin
        $finish;
        $write("too few bits");
        $write("\n");
    end
    r = (((((((((((((((((b >>> 14) & 1) << 0) | (((b >>> 13) & 1) << 1)) | (((b >>> 12) & 1) << 2)) | (((b >>> 11) & 1) << 3)) | (((b >>> 10) & 1) << 4)) | (((b >>> 9) & 1) << 5)) | (((b >>> 8) & 1) << 6)) | (((b >>> 7) & 1) << 7)) | (((b >>> 6) & 1) << 8)) | (((b >>> 5) & 1) << 9)) | (((b >>> 4) & 1) << 10)) | (((b >>> 3) & 1) << 11)) | (((b >>> 2) & 1) << 12)) | (((b >>> 1) & 1) << 13)) | (((b >>> 0) & 1) << 14));
    r = r >>> (15 - $signed({1'b0, nb}));
    MYHDL70_rev_bits = r;
    disable MYHDL130_RETURN;
end
endfunction
 
function integer MYHDL71_get4;
    input boffset;
    integer boffset;
    input width;
    integer width;
begin: MYHDL131_RETURN
    if ((nb != 4)) begin
        $write("----NB----");
        $write("\n");
        $finish;
    end
    MYHDL71_get4 = ($signed($signed({1'b0, b41}) >>> ($signed({1'b0, dio}) + boffset)) & ((1 << width) - 1));
    disable MYHDL131_RETURN;
end
endfunction
 
task MYHDL72_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL132_RETURN
    nshift = $signed(($signed({1'b0, dio}) + width) >>> 3);
    o_iprogress <= di;
    dio <= (($signed({1'b0, dio}) + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
task MYHDL73_adv;
    input width;
    integer width;
    integer nshift;
begin: MYHDL133_RETURN
    nshift = ((dio + width) >>> 3);
    o_iprogress <= di;
    dio <= ((dio + width) & 7);
    di <= ($signed({1'b0, di}) + nshift);
    if ((nshift != 0)) begin
        filled <= 1'b0;
    end
end
endtask
 
 
always @(posedge clk) begin: DEFLATE_IO_LOGIC
    case (i_mode)
        'h2: begin
            iram[(i_addr & 127)] <= i_data;
            isize <= i_addr;
        end
        'h3: begin
            o_byte <= oram[i_addr];
        end
        default: begin
            // pass
        end
    endcase
end
 
 
always @(posedge clk) begin: DEFLATE_LOGIC
    integer hm;
    integer skip;
    reg no_adv;
    integer cs_i;
    reg [4-1:0] outlen;
    reg [9-1:0] outbits;
    reg [8-1:0] bdata;
    integer adler1_next;
    integer nextdist;
    integer copydist;
    integer extra_dist;
    integer extra_bits;
    integer outcode;
    integer lencode;
    integer match;
    integer distance;
    integer stat_i;
    integer clo_i;
    integer n_adv;
    integer dbl_i;
    integer dbl;
    integer dist_i;
    integer limit;
    reg [4-1:0] j;
    integer t;
    integer hf2_i;
    reg [5-1:0] amb;
    integer ncode;
    reg [10-1:0] canonical;
    reg [4-1:0] bits_next;
    reg [15-1:0] aim;
    integer cto;
    integer mask;
    integer token;
    integer extraLength;
    integer tlength;
    integer distanceCode;
    integer moreBits;
    integer mored;
    if ((!reset)) begin
        $write("DEFLATE RESET");
        $write("\n");
        state <= 5'b00000;
        o_done <= 1'b0;
    end
    else begin
        case (state)
            5'b00000: begin
                case (i_mode)
                    'h4: begin
                        $write("STARTC");
                        $write("\n");
                        do_compress <= 1'b1;
                        method <= 1;
                        o_done <= 1'b0;
                        o_iprogress <= 0;
                        o_oprogress <= 0;
                        di <= 0;
                        dio <= 0;
                        do <= 0;
                        doo <= 0;
                        filled <= 1'b1;
                        cur_static <= 0;
                        state <= 5'b01110;
                    end
                    'h5: begin
                        do_compress <= 1'b0;
                        o_done <= 1'b0;
                        o_iprogress <= 0;
                        o_oprogress <= 0;
                        di <= 0;
                        dio <= 0;
                        do <= 0;
                        doo <= 0;
                        filled <= 1'b1;
                        state <= 5'b00001;
                    end
                    default: begin
                        // pass
                    end
                endcase
            end
            5'b00001: begin
                if ((!filled)) begin
                    filled <= 1'b1;
                end
                else if ((nb < 4)) begin
                    // pass
                end
                else if ((di == 0)) begin
                    if ((b1 == 120)) begin
                        $write("deflate mode");
                        $write("\n");
                    end
                    else begin
                        $write("%h", di);
                        $write(" ");
                        $write("%h", dio);
                        $write(" ");
                        $write("%h", nb);
                        $write(" ");
                        $write("%h", b1);
                        $write(" ");
                        $write("%h", b2);
                        $write(" ");
                        $write("%h", b3);
                        $write(" ");
                        $write("%h", b4);
                        $write(" ");
                        $write("%h", isize);
                        $write("\n");
                        $finish;
                        o_done <= 1'b1;
                        state <= 5'b00000;
                    end
                    MYHDL3_adv(16);
                end
                else begin
                    if (MYHDL4_get4(0, 1)) begin
                        $write("final");
                        $write("\n");
                        final <= 1'b1;
                    end
                    hm = MYHDL5_get4(1, 2);
                    method <= hm;
                    $write("method");
                    $write(" ");
                    $write("%0d", hm);
                    $write("\n");
                    case (hm)
                        'h2: begin
                            state <= 5'b00010;
                            numCodeLength <= 0;
                            numLiterals <= 0;
                            static <= 1'b0;
                            MYHDL6_adv(3);
                        end
                        'h1: begin
                            static <= 1'b1;
                            cur_static <= 0;
                            state <= 5'b01110;
                            MYHDL7_adv(3);
                        end
                        'h0: begin
                            state <= 5'b10101;
                            skip = (8 - dio);
                            if ((skip <= 2)) begin
                                skip = (16 - dio);
                            end
                            length <= MYHDL8_get4(skip, 16);
                            MYHDL9_adv((skip + 16));
                            cur_i <= 0;
                            offset <= 7;
                        end
                        default: begin
                            state <= 5'b00000;
                            $write("Bad method");
                            $write("\n");
                            $finish;
                        end
                    endcase
                end
            end
            5'b10110: begin
                no_adv = 0;
                if ((!filled)) begin
                    no_adv = 1;
                    filled <= 1'b1;
                end
                else if ((nb < 4)) begin
                    no_adv = 1;
                    // pass
                end
                else if ((cur_cstatic == 0)) begin
                    flush <= 1'b0;
                    ob1 <= 0;
                    adler1 <= 1;
                    adler2 <= 0;
                    ladler1 <= 0;
                    oaddr <= 0;
                    obyte <= 120;
                end
                else if ((cur_cstatic == 1)) begin
                    oaddr <= 1;
                    obyte <= 156;
                    do <= 2;
                end
                else if ((cur_cstatic == 2)) begin
                    oaddr <= do;
                    obyte <= MYHDL10_put(3, 3);
                    MYHDL11_put_adv(3, 3);
                end
                else if (flush) begin
                    $write("flush");
                    $write(" ");
                    $write("%h", do);
                    $write(" ");
                    $write("%h", ob1);
                    $write("\n");
                    no_adv = 1;
                    oaddr <= do;
                    obyte <= ob1;
                    MYHDL12_do_flush;
                end
                else if ((($signed({1'b0, cur_cstatic}) - 3) > isize)) begin
                    if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 1))) begin
                        $write("Put EOF");
                        $write(" ");
                        $write("%h", do);
                        $write("\n");
                        cs_i = 256;
                        outlen = codeLength[cs_i];
                        outbits = code_bits[cs_i];
                        $write("EOF BITS:");
                        $write(" ");
                        $write("%0d", cs_i);
                        $write(" ");
                        $write("%h", outlen);
                        $write(" ");
                        $write("%h", outbits);
                        $write("\n");
                        oaddr <= do;
                        obyte <= MYHDL13_put(outbits, outlen);
                        MYHDL14_put_adv(outbits, outlen);
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 2))) begin
                        $write("calc end adler");
                        $write("\n");
                        adler2 <= ((adler2 + ladler1) % 65521);
                        if ((doo != 0)) begin
                            oaddr <= do;
                            obyte <= ob1;
                            do <= (do + 1);
                        end
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 3))) begin
                        $write("c1");
                        $write("\n");
                        oaddr <= do;
                        obyte <= (adler2 >>> 8);
                        do <= (do + 1);
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 4))) begin
                        $write("c2");
                        $write("\n");
                        oaddr <= do;
                        obyte <= (adler2 & 255);
                        do <= (do + 1);
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 5))) begin
                        $write("c3");
                        $write("\n");
                        oaddr <= do;
                        obyte <= (adler1 >>> 8);
                        do <= (do + 1);
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 6))) begin
                        $write("c4");
                        $write("\n");
                        oaddr <= do;
                        obyte <= (adler1 & 255);
                    end
                    else if ((($signed({1'b0, cur_cstatic}) - 3) == (isize + 7))) begin
                        $write("EOF finish");
                        $write(" ");
                        $write("%h", do);
                        $write("\n");
                        o_done <= 1'b1;
                        o_oprogress <= (do + 1);
                        state <= 5'b00000;
                    end
                    else begin
                        $write("%h", cur_cstatic);
                        $write(" ");
                        $write("%h", isize);
                        $write("\n");
                        $finish;
                    end
                end
                else begin
                    bdata = iram[di];
                    adler1_next = ((adler1 + bdata) % 65521);
                    adler1 <= adler1_next;
                    adler2 <= ((adler2 + ladler1) % 65521);
                    ladler1 <= adler1_next;
                    state <= 5'b10111;
                    cur_search <= (di - 1);
                end
                if ((!no_adv)) begin
                    cur_cstatic <= (cur_cstatic + 1);
                end
            end
            5'b11000: begin
                if (flush) begin
                    MYHDL15_do_flush;
                end
                else begin
                    case ((cur_i + 1))
                        0: nextdist = 1;
                        1: nextdist = 2;
                        2: nextdist = 3;
                        3: nextdist = 4;
                        4: nextdist = 5;
                        5: nextdist = 7;
                        6: nextdist = 9;
                        7: nextdist = 13;
                        8: nextdist = 17;
                        9: nextdist = 25;
                        10: nextdist = 33;
                        11: nextdist = 49;
                        12: nextdist = 65;
                        13: nextdist = 97;
                        14: nextdist = 129;
                        15: nextdist = 193;
                        16: nextdist = 257;
                        17: nextdist = 385;
                        18: nextdist = 513;
                        19: nextdist = 769;
                        20: nextdist = 1025;
                        21: nextdist = 1537;
                        22: nextdist = 2049;
                        23: nextdist = 3073;
                        24: nextdist = 4097;
                        25: nextdist = 6145;
                        26: nextdist = 8193;
                        27: nextdist = 12289;
                        28: nextdist = 16385;
                        default: nextdist = 24577;
                    endcase
                    if ((nextdist > cur_dist)) begin
                        case (cur_i)
                            0: copydist = 1;
                            1: copydist = 2;
                            2: copydist = 3;
                            3: copydist = 4;
                            4: copydist = 5;
                            5: copydist = 7;
                            6: copydist = 9;
                            7: copydist = 13;
                            8: copydist = 17;
                            9: copydist = 25;
                            10: copydist = 33;
                            11: copydist = 49;
                            12: copydist = 65;
                            13: copydist = 97;
                            14: copydist = 129;
                            15: copydist = 193;
                            16: copydist = 257;
                            17: copydist = 385;
                            18: copydist = 513;
                            19: copydist = 769;
                            20: copydist = 1025;
                            21: copydist = 1537;
                            22: copydist = 2049;
                            23: copydist = 3073;
                            24: copydist = 4097;
                            25: copydist = 6145;
                            26: copydist = 8193;
                            27: copydist = 12289;
                            28: copydist = 16385;
                            default: copydist = 24577;
                        endcase
                        extra_dist = (cur_dist - copydist);
                        case ((cur_i / 2))
                            0: extra_bits = 0;
                            1: extra_bits = 0;
                            2: extra_bits = 1;
                            3: extra_bits = 2;
                            4: extra_bits = 3;
                            5: extra_bits = 4;
                            6: extra_bits = 5;
                            7: extra_bits = 6;
                            8: extra_bits = 7;
                            9: extra_bits = 8;
                            10: extra_bits = 9;
                            11: extra_bits = 10;
                            12: extra_bits = 11;
                            13: extra_bits = 12;
                            default: extra_bits = 13;
                        endcase
                        if ((extra_dist > ((1 << extra_bits) - 1))) begin
                            $finish;
                        end
                        outcode = (MYHDL16_rev_bits(cur_i, 5) | (extra_dist << 5));
                        oaddr <= do;
                        obyte <= MYHDL17_put(outcode, (5 + extra_bits));
                        MYHDL18_put_adv(outcode, (5 + extra_bits));
                        cur_i <= (($signed({1'b0, di}) - $signed({1'b0, length})) + 1);
                        state <= 5'b11001;
                    end
                    else begin
                        cur_i <= (cur_i + 1);
                    end
                end
            end
            5'b11001: begin
                if ((cur_i < di)) begin
                    bdata = iram[(cur_i & 127)];
                    adler1_next = ((adler1 + bdata) % 65521);
                    adler1 <= adler1_next;
                    adler2 <= ((adler2 + ladler1) % 65521);
                    ladler1 <= adler1_next;
                    cur_i <= (cur_i + 1);
                end
                else begin
                    state <= 5'b10110;
                end
            end
            5'b10111: begin
                if ((!filled)) begin
                    filled <= 1'b1;
                end
                else if ((nb < 4)) begin
                    // pass
                end
                else begin
                    if (((cur_search >= 0) && (cur_search >= ($signed({1'b0, di}) - 32)) && ($signed({1'b0, di}) < ($signed({1'b0, isize}) - 3)))) begin
                        if (((iram[(cur_search & 127)] == b1) && (iram[((cur_search + 1) & 127)] == b2) && (iram[((cur_search + 2) & 127)] == b3))) begin
                            lencode = 257;
                            match = 3;
                            if ((($signed({1'b0, di}) < ($signed({1'b0, isize}) - 4)) && (iram[((cur_search + 3) & 127)] == b4))) begin
                                lencode = 258;
                                match = 4;
                                if ((($signed({1'b0, di}) < ($signed({1'b0, isize}) - 5)) && (iram[((cur_search + 4) & 127)] == iram[((di + 4) & 127)]))) begin
                                    lencode = 259;
                                    match = 5;
                                end
                            end
                            // if di < isize - 6 and                                             iram[cur_search+5 & IBS] == iram[di + 5 & IBS]:
                            //     lencode = 260
                            //     match = 6
                            //     if di < isize - 7 and                                                 iram[cur_search+6 & IBS] == iram[di + 6 & IBS]:
                            //         lencode = 261
                            //         match = 7
                            //         if di < isize - 8 and                                                     iram[cur_search+7 & IBS] == iram[di + 7 & IBS]:
                            //             lencode = 262
                            //             match = 8
                            //             if di < isize - 9 and                                                         iram[cur_search+8 & IBS] == iram[di + 8 & IBS]:
                            //                 lencode = 263
                            //                 match = 9
                            //                 if di < isize - 10 and                                                             iram[cur_search+9 & IBS] == iram[di + 9 & IBS]:
                            //                     lencode = 264
                            //                     match = 10
                            $write("found:");
                            $write(" ");
                            $write("%h", cur_search);
                            $write(" ");
                            $write("%h", di);
                            $write(" ");
                            $write("%h", isize);
                            $write(" ");
                            $write("%0d", match);
                            $write("\n");
                            outlen = codeLength[lencode];
                            outbits = code_bits[lencode];
                            oaddr <= do;
                            obyte <= MYHDL19_put(outbits, outlen);
                            MYHDL20_put_adv(outbits, outlen);
                            distance = ($signed({1'b0, di}) - cur_search);
                            cur_dist <= distance;
                            cur_i <= 0;
                            di <= (di + match);
                            cur_cstatic <= ((cur_cstatic + match) - 1);
                            length <= match;
                            state <= 5'b11000;
                        end
                        else begin
                            cur_search <= (cur_search - 1);
                        end
                    end
                    else begin
                        bdata = iram[di];
                        di <= (di + 1);
                        outlen = codeLength[bdata];
                        outbits = code_bits[bdata];
                        oaddr <= do;
                        obyte <= MYHDL21_put(outbits, outlen);
                        MYHDL22_put_adv(outbits, outlen);
                        state <= 5'b10110;
                    end
                end
            end
            5'b01110: begin
                for (stat_i=0; stat_i<144; stat_i=stat_i+1) begin
                    codeLength[stat_i] <= 8;
                end
                for (stat_i=144; stat_i<256; stat_i=stat_i+1) begin
                    codeLength[stat_i] <= 9;
                end
                for (stat_i=256; stat_i<280; stat_i=stat_i+1) begin
                    codeLength[stat_i] <= 7;
                end
                for (stat_i=280; stat_i<288; stat_i=stat_i+1) begin
                    codeLength[stat_i] <= 8;
                end
                numCodeLength <= 288;
                cur_HF1 <= 0;
                state <= 5'b00111;
                // if cur_static < 288:
                //     if cur_static < 144:
                //         codeLength[cur_static].next = 8
                //     elif cur_static < 256:
                //         codeLength[cur_static].next = 9
                //     elif cur_static < 280:
                //         codeLength[cur_static].next = 7
                //     else:
                //         codeLength[cur_static].next = 8
                //     cur_static.next = cur_static + 1
                // else:
                //     numCodeLength.next = 288
                //     cur_HF1.next = 0
                //     state.next = d_state.HF1
            end
            5'b00010: begin
                if ((!filled)) begin
                    filled <= 1'b1;
                end
                else if ((nb < 4)) begin
                    // pass
                end
                else if ((numLiterals == 0)) begin
                    numLiterals <= (257 + MYHDL31_get4(0, 5));
                    $write("NL:");
                    $write(" ");
                    $write("%0d", (257 + MYHDL32_get4(0, 5)));
                    $write("\n");
                    numDistance <= (1 + MYHDL33_get4(5, 5));
                    $write("ND:");
                    $write(" ");
                    $write("%0d", (1 + MYHDL34_get4(5, 5)));
                    $write("\n");
                    b_numCodeLength <= (4 + MYHDL35_get4(10, 4));
                    $write("NCL:");
                    $write(" ");
                    $write("%0d", (4 + MYHDL36_get4(10, 4)));
                    $write("\n");
                    numCodeLength <= 0;
                    MYHDL37_adv(14);
                end
                else begin
                    if ((numCodeLength < 19)) begin
                        case (numCodeLength)
                            0: clo_i = 16;
                            1: clo_i = 17;
                            2: clo_i = 18;
                            3: clo_i = 0;
                            4: clo_i = 8;
                            5: clo_i = 7;
                            6: clo_i = 9;
                            7: clo_i = 6;
                            8: clo_i = 10;
                            9: clo_i = 5;
                            10: clo_i = 11;
                            11: clo_i = 4;
                            12: clo_i = 12;
                            13: clo_i = 3;
                            14: clo_i = 13;
                            15: clo_i = 2;
                            16: clo_i = 14;
                            17: clo_i = 1;
                            default: clo_i = 15;
                        endcase
                        if ((numCodeLength < b_numCodeLength)) begin
                            codeLength[clo_i] <= MYHDL38_get4(0, 3);
                            MYHDL39_adv(3);
                        end
                        else begin
                            codeLength[clo_i] <= 0;
                        end
                        numCodeLength <= (numCodeLength + 1);
                    end
                    else begin
                        numCodeLength <= 19;
                        cur_HF1 <= 0;
                        state <= 5'b00111;
                    end
                end
            end
            5'b00011: begin
                if ((!filled)) begin
                    filled <= 1'b1;
                end
                else if ((nb < 4)) begin
                    // pass
                end
                else if ((numCodeLength < (numLiterals + numDistance))) begin
                    n_adv = 0;
                    if ((code < 16)) begin
                        howOften <= 1;
                        lastToken <= code;
                    end
                    else if ((code == 16)) begin
                        howOften <= (3 + MYHDL40_get4(0, 2));
                        n_adv = 2;
                    end
                    else if ((code == 17)) begin
                        howOften <= (3 + MYHDL41_get4(0, 3));
                        lastToken <= 0;
                        n_adv = 3;
                    end
                    else if ((code == 18)) begin
                        howOften <= (11 + MYHDL42_get4(0, 7));
                        lastToken <= 0;
                        n_adv = 7;
                    end
                    else begin
                        $finish;
                    end
                    if ((n_adv != 0)) begin
                        MYHDL43_adv(n_adv);
                    end
                    state <= 5'b00100;
                end
                else begin
                    $write("FILL UP");
                    $write("\n");
                    for (dbl_i=0; dbl_i<32; dbl_i=dbl_i+1) begin
                        dbl = 0;
                        if (((dbl_i + $signed({1'b0, numLiterals})) < numCodeLength)) begin
                            dbl = codeLength[(dbl_i + $signed({1'b0, numLiterals}))];
                        end
                        distanceLength[dbl_i] <= dbl;
                    end
                    cur_i <= numLiterals;
                    state <= 5'b00110;
                end
            end
            default: begin
                if ((state == 5'b00110)) begin
                    if ((cur_i < 288)) begin
                        codeLength[cur_i] <= 0;
                        cur_i <= (cur_i + 1);
                    end
                    else begin
                        numCodeLength <= 288;
                        method <= 3;
                        cur_HF1 <= 0;
                        state <= 5'b00111;
                    end
                end
                else begin
                    case (state)
                        5'b00101: begin
                            $write("DISTTREE");
                            $write("\n");
                            for (dist_i=0; dist_i<32; dist_i=dist_i+1) begin
                                codeLength[dist_i] <= distanceLength[dist_i];
                            end
                            numCodeLength <= 32;
                            method <= 4;
                            cur_HF1 <= 0;
                            state <= 5'b00111;
                        end
                        5'b00100: begin
                            if ((howOften != 0)) begin
                                codeLength[numCodeLength] <= lastToken;
                                howOften <= (howOften - 1);
                                numCodeLength <= (numCodeLength + 1);
                            end
                            else if ((numCodeLength < (numLiterals + numDistance))) begin
                                cur_next <= 0;
                                state <= 5'b10011;
                            end
                            else begin
                                state <= 5'b00011;
                            end
                        end
                        5'b00111: begin
                            if ((cur_HF1 < 16)) begin
                                bitLengthCount[cur_HF1] <= 0;
                            end
                            if ((cur_HF1 < 128)) begin
                                d_leaves[cur_HF1] <= 0;
                            end
                            if (((method != 4) && (cur_HF1 < 512))) begin
                                lwaddr <= cur_HF1;
                                wleaf <= 0;
                            end
                            limit = 512;
                            if ((method == 4)) begin
                                limit = 128;
                            end
                            if ((cur_HF1 < limit)) begin
                                cur_HF1 <= (cur_HF1 + 1);
                            end
                            else begin
                                $write("DID HF1 INIT");
                                $write("\n");
                                cur_i <= 0;
                                state <= 5'b01000;
                            end
                        end
                        5'b01000: begin
                            if ((cur_i < numCodeLength)) begin
                                j = codeLength[cur_i];
                                bitLengthCount[j] <= (bitLengthCount[j] + 1);
                                cur_i <= (cur_i + 1);
                            end
                            else begin
                                bitLengthCount[0] <= 0;
                                state <= 5'b01001;
                                cur_i <= 1;
                                if ((method == 4)) begin
                                    d_maxBits <= 0;
                                end
                                else begin
                                    maxBits <= 0;
                                end
                                minBits <= 15;
                            end
                        end
                        5'b01001: begin
                            if ((cur_i <= 15)) begin
                                if ((bitLengthCount[cur_i] != 0)) begin
                                    if ((cur_i < minBits)) begin
                                        minBits <= cur_i;
                                    end
                                    if ((method == 4)) begin
                                        if ((cur_i > d_maxBits)) begin
                                            d_maxBits <= cur_i;
                                        end
                                    end
                                    else begin
                                        if ((cur_i > maxBits)) begin
                                            maxBits <= cur_i;
                                        end
                                    end
                                end
                                cur_i <= (cur_i + 1);
                            end
                            else begin
                                $write("%h", minBits);
                                $write(" ");
                                $write("%h", maxBits);
                                $write("\n");
                                t = 10;
                                if ((method == 4)) begin
                                    if ((t > d_maxBits)) begin
                                        t = d_maxBits;
                                    end
                                    d_instantMaxBit <= t;
                                    d_instantMask <= ((1 << t) - 1);
                                end
                                else begin
                                    if ((t > maxBits)) begin
                                        t = maxBits;
                                    end
                                    instantMaxBit <= t;
                                    instantMask <= ((1 << t) - 1);
                                end
                                $write("%0d", ((1 << t) - 1));
                                $write("\n");
                                state <= 5'b01010;
                                cur_i <= minBits;
                                code <= 0;
                                for (hf2_i=0; hf2_i<15; hf2_i=hf2_i+1) begin
                                    nextCode[hf2_i] <= 0;
                                end
                                $write("to HF3");
                                $write("\n");
                            end
                        end
                        5'b01010: begin
                            amb = maxBits;
                            if ((method == 4)) begin
                                amb = d_maxBits;
                            end
                            if ((cur_i <= amb)) begin
                                ncode = ((code + bitLengthCount[($signed({1'b0, cur_i}) - 1)]) << 1);
                                code <= ncode;
                                nextCode[cur_i] <= ncode;
                                cur_i <= (cur_i + 1);
                            end
                            else begin
                                state <= 5'b01011;
                                cur_i <= 0;
                                spread_i <= 0;
                                $write("to HF4");
                                $write("\n");
                            end
                        end
                        5'b01100: begin
                            canonical = nextCode[bits];
                            nextCode[bits] <= (nextCode[bits] + 1);
                            if ((bits > 15)) begin
                                $finish;
                            end
                            reverse <= MYHDL50_rev_bits(canonical, bits);
                            leaf <= MYHDL51_makeLeaf(spread_i, bits);
                            state <= 5'b01101;
                        end
                        5'b01101: begin
                            if ((method == 4)) begin
                                d_leaves[reverse] <= leaf;
                                if ((bits <= d_instantMaxBit)) begin
                                    if (((reverse + (1 << bits)) <= d_instantMask)) begin
                                        step <= (1 << bits);
                                        spread <= (reverse + (1 << bits));
                                        state <= 5'b10010;
                                    end
                                    else begin
                                        spread_i <= (spread_i + 1);
                                        state <= 5'b01011;
                                    end
                                end
                                else begin
                                    state <= 5'b01011;
                                    spread_i <= (spread_i + 1);
                                end
                            end
                            else begin
                                wleaf <= leaf;
                                lwaddr <= reverse;
                                code_bits[spread_i] <= reverse;
                                if ((bits <= instantMaxBit)) begin
                                    if (((reverse + (1 << bits)) <= instantMask)) begin
                                        step <= (1 << bits);
                                        spread <= (reverse + (1 << bits));
                                        state <= 5'b10010;
                                    end
                                    else begin
                                        spread_i <= (spread_i + 1);
                                        state <= 5'b01011;
                                    end
                                end
                                else begin
                                    spread_i <= (spread_i + 1);
                                    state <= 5'b01011;
                                end
                            end
                        end
                        5'b01011: begin
                            if ((spread_i < numCodeLength)) begin
                                bits_next = codeLength[spread_i];
                                if ((bits_next != 0)) begin
                                    bits <= bits_next;
                                    state <= 5'b01100;
                                end
                                else begin
                                    spread_i <= (spread_i + 1);
                                end
                            end
                            else begin
                                if (do_compress) begin
                                    state <= 5'b10110;
                                    cur_cstatic <= 0;
                                end
                                else if ((method == 3)) begin
                                    state <= 5'b00101;
                                end
                                else if ((method == 4)) begin
                                    $write("DEFLATE m2!");
                                    $write("\n");
                                    state <= 5'b10011;
                                end
                                else if ((method == 2)) begin
                                    numCodeLength <= 0;
                                    state <= 5'b10011;
                                end
                                else begin
                                    state <= 5'b10011;
                                end
                                cur_next <= 0;
                                cur_i <= 0;
                            end
                        end
                        5'b10010: begin
                            if ((method == 4)) begin
                                d_leaves[spread] <= MYHDL52_makeLeaf(spread_i, codeLength[spread_i]);
                            end
                            else begin
                                lwaddr <= spread;
                                wleaf <= MYHDL53_makeLeaf(spread_i, codeLength[spread_i]);
                            end
                            aim = instantMask;
                            if ((method == 4)) begin
                                aim = d_instantMask;
                            end
                            if (($signed({1'b0, spread}) > ($signed({1'b0, aim}) - $signed({1'b0, step})))) begin
                                spread_i <= (spread_i + 1);
                                state <= 5'b01011;
                            end
                            else begin
                                spread <= (spread + step);
                            end
                        end
                        5'b10011: begin
                            if ((!filled)) begin
                                filled <= 1'b1;
                            end
                            else if ((nb < 4)) begin
                                // pass
                            end
                            else if ((cur_next == 0)) begin
                                cto = MYHDL54_get4(0, maxBits);
                                cur_next <= 1;
                                mask = ((1 << instantMaxBit) - 1);
                                leaf <= leaves[(cto & mask)];
                            end
                            else begin
                                if ((MYHDL55_get_bits(leaf) < 1)) begin
                                    $write("< 1 bits: ");
                                    $write("\n");
                                    $finish;
                                end
                                MYHDL57_adv(MYHDL56_get_bits(leaf));
                                if ((MYHDL58_get_code(leaf) == 0)) begin
                                    $write("leaf 0");
                                    $write("\n");
                                end
                                code <= MYHDL59_get_code(leaf);
                                if ((method == 2)) begin
                                    state <= 5'b00011;
                                end
                                else begin
                                    state <= 5'b10100;
                                end
                            end
                        end
                        5'b01111: begin
                            if ((!filled)) begin
                                filled <= 1'b1;
                            end
                            else if ((nb < 4)) begin
                                // pass
                            end
                            else begin
                                token = (code - 257);
                                case (token)
                                    0: extraLength = 0;
                                    1: extraLength = 0;
                                    2: extraLength = 0;
                                    3: extraLength = 0;
                                    4: extraLength = 0;
                                    5: extraLength = 0;
                                    6: extraLength = 0;
                                    7: extraLength = 0;
                                    8: extraLength = 1;
                                    9: extraLength = 1;
                                    10: extraLength = 1;
                                    11: extraLength = 1;
                                    12: extraLength = 2;
                                    13: extraLength = 2;
                                    14: extraLength = 2;
                                    15: extraLength = 2;
                                    16: extraLength = 3;
                                    17: extraLength = 3;
                                    18: extraLength = 3;
                                    19: extraLength = 3;
                                    20: extraLength = 4;
                                    21: extraLength = 4;
                                    22: extraLength = 4;
                                    23: extraLength = 4;
                                    24: extraLength = 5;
                                    25: extraLength = 5;
                                    26: extraLength = 5;
                                    27: extraLength = 5;
                                    default: extraLength = 0;
                                endcase
                                cto = MYHDL60_get4(extraLength, d_maxBits);
                                mask = ((1 << d_instantMaxBit) - 1);
                                leaf <= d_leaves[(cto & mask)];
                                state <= 5'b10000;
                            end
                        end
                        5'b10000: begin
                            if ((MYHDL61_get_bits(leaf) == 0)) begin
                                $finish;
                            end
                            token = (code - 257);
                            case (token)
                                0: tlength = 3;
                                1: tlength = 4;
                                2: tlength = 5;
                                3: tlength = 6;
                                4: tlength = 7;
                                5: tlength = 8;
                                6: tlength = 9;
                                7: tlength = 10;
                                8: tlength = 11;
                                9: tlength = 13;
                                10: tlength = 15;
                                11: tlength = 17;
                                12: tlength = 19;
                                13: tlength = 23;
                                14: tlength = 27;
                                15: tlength = 31;
                                16: tlength = 35;
                                17: tlength = 43;
                                18: tlength = 51;
                                19: tlength = 59;
                                20: tlength = 67;
                                21: tlength = 83;
                                22: tlength = 99;
                                23: tlength = 115;
                                24: tlength = 131;
                                25: tlength = 163;
                                26: tlength = 195;
                                27: tlength = 227;
                                default: tlength = 258;
                            endcase
                            case (token)
                                0: extraLength = 0;
                                1: extraLength = 0;
                                2: extraLength = 0;
                                3: extraLength = 0;
                                4: extraLength = 0;
                                5: extraLength = 0;
                                6: extraLength = 0;
                                7: extraLength = 0;
                                8: extraLength = 1;
                                9: extraLength = 1;
                                10: extraLength = 1;
                                11: extraLength = 1;
                                12: extraLength = 2;
                                13: extraLength = 2;
                                14: extraLength = 2;
                                15: extraLength = 2;
                                16: extraLength = 3;
                                17: extraLength = 3;
                                18: extraLength = 3;
                                19: extraLength = 3;
                                20: extraLength = 4;
                                21: extraLength = 4;
                                22: extraLength = 4;
                                23: extraLength = 4;
                                24: extraLength = 5;
                                25: extraLength = 5;
                                26: extraLength = 5;
                                27: extraLength = 5;
                                default: extraLength = 0;
                            endcase
                            tlength = tlength + MYHDL62_get4(0, extraLength);
                            distanceCode = MYHDL63_get_code(leaf);
                            case (distanceCode)
                                0: distance = 1;
                                1: distance = 2;
                                2: distance = 3;
                                3: distance = 4;
                                4: distance = 5;
                                5: distance = 7;
                                6: distance = 9;
                                7: distance = 13;
                                8: distance = 17;
                                9: distance = 25;
                                10: distance = 33;
                                11: distance = 49;
                                12: distance = 65;
                                13: distance = 97;
                                14: distance = 129;
                                15: distance = 193;
                                16: distance = 257;
                                17: distance = 385;
                                18: distance = 513;
                                19: distance = 769;
                                20: distance = 1025;
                                21: distance = 1537;
                                22: distance = 2049;
                                23: distance = 3073;
                                24: distance = 4097;
                                25: distance = 6145;
                                26: distance = 8193;
                                27: distance = 12289;
                                28: distance = 16385;
                                default: distance = 24577;
                            endcase
                            case ($signed(distanceCode >>> 1))
                                0: moreBits = 0;
                                1: moreBits = 0;
                                2: moreBits = 1;
                                3: moreBits = 2;
                                4: moreBits = 3;
                                5: moreBits = 4;
                                6: moreBits = 5;
                                7: moreBits = 6;
                                8: moreBits = 7;
                                9: moreBits = 8;
                                10: moreBits = 9;
                                11: moreBits = 10;
                                12: moreBits = 11;
                                13: moreBits = 12;
                                default: moreBits = 13;
                            endcase
                            mored = MYHDL65_get4((extraLength + MYHDL64_get_bits(leaf)), moreBits);
                            distance = distance + mored;
                            MYHDL67_adv(((moreBits + extraLength) + MYHDL66_get_bits(leaf)));
                            offset <= ($signed({1'b0, do}) - distance);
                            length <= tlength;
                            cur_i <= 0;
                            oraddr <= offset;
                            state <= 5'b10101;
                        end
                        default: begin
                            if ((state == 5'b10100)) begin
                                if ((!filled)) begin
                                    filled <= 1'b1;
                                end
                                else if ((nb < 4)) begin
                                    // pass
                                end
                                else if (($signed({1'b0, di}) > ($signed({1'b0, isize}) - 3))) begin
                                    state <= 5'b00000;
                                    o_done <= 1'b1;
                                    $write("NO EOF ");
                                    $write(" ");
                                    $write("%h", di);
                                    $write("\n");
                                    $finish;
                                end
                                else if ((code == 256)) begin
                                    $write("EOF:");
                                    $write(" ");
                                    $write("%h", di);
                                    $write(" ");
                                    $write("%h", do);
                                    $write("\n");
                                    if ((!final)) begin
                                        state <= 5'b00001;
                                    end
                                    else begin
                                        o_done <= 1'b1;
                                        o_oprogress <= do;
                                        state <= 5'b00000;
                                    end
                                end
                                else begin
                                    if ((code < 256)) begin
                                        oaddr <= do;
                                        obyte <= code;
                                        o_oprogress <= (do + 1);
                                        do <= (do + 1);
                                        cur_next <= 0;
                                        state <= 5'b10011;
                                    end
                                    else if ((code == 300)) begin
                                        $finish;
                                    end
                                    else begin
                                        if (static) begin
                                            token = (code - 257);
                                            case (token)
                                                0: tlength = 3;
                                                1: tlength = 4;
                                                2: tlength = 5;
                                                3: tlength = 6;
                                                4: tlength = 7;
                                                5: tlength = 8;
                                                6: tlength = 9;
                                                7: tlength = 10;
                                                8: tlength = 11;
                                                9: tlength = 13;
                                                10: tlength = 15;
                                                11: tlength = 17;
                                                12: tlength = 19;
                                                13: tlength = 23;
                                                14: tlength = 27;
                                                15: tlength = 31;
                                                16: tlength = 35;
                                                17: tlength = 43;
                                                18: tlength = 51;
                                                19: tlength = 59;
                                                20: tlength = 67;
                                                21: tlength = 83;
                                                22: tlength = 99;
                                                23: tlength = 115;
                                                24: tlength = 131;
                                                25: tlength = 163;
                                                26: tlength = 195;
                                                27: tlength = 227;
                                                default: tlength = 258;
                                            endcase
                                            case (token)
                                                0: extraLength = 0;
                                                1: extraLength = 0;
                                                2: extraLength = 0;
                                                3: extraLength = 0;
                                                4: extraLength = 0;
                                                5: extraLength = 0;
                                                6: extraLength = 0;
                                                7: extraLength = 0;
                                                8: extraLength = 1;
                                                9: extraLength = 1;
                                                10: extraLength = 1;
                                                11: extraLength = 1;
                                                12: extraLength = 2;
                                                13: extraLength = 2;
                                                14: extraLength = 2;
                                                15: extraLength = 2;
                                                16: extraLength = 3;
                                                17: extraLength = 3;
                                                18: extraLength = 3;
                                                19: extraLength = 3;
                                                20: extraLength = 4;
                                                21: extraLength = 4;
                                                22: extraLength = 4;
                                                23: extraLength = 4;
                                                24: extraLength = 5;
                                                25: extraLength = 5;
                                                26: extraLength = 5;
                                                27: extraLength = 5;
                                                default: extraLength = 0;
                                            endcase
                                            tlength = tlength + MYHDL68_get4(0, extraLength);
                                            t = MYHDL69_get4(extraLength, 5);
                                            distanceCode = MYHDL70_rev_bits(t, 5);
                                            case (distanceCode)
                                                0: distance = 1;
                                                1: distance = 2;
                                                2: distance = 3;
                                                3: distance = 4;
                                                4: distance = 5;
                                                5: distance = 7;
                                                6: distance = 9;
                                                7: distance = 13;
                                                8: distance = 17;
                                                9: distance = 25;
                                                10: distance = 33;
                                                11: distance = 49;
                                                12: distance = 65;
                                                13: distance = 97;
                                                14: distance = 129;
                                                15: distance = 193;
                                                16: distance = 257;
                                                17: distance = 385;
                                                18: distance = 513;
                                                19: distance = 769;
                                                20: distance = 1025;
                                                21: distance = 1537;
                                                22: distance = 2049;
                                                23: distance = 3073;
                                                24: distance = 4097;
                                                25: distance = 6145;
                                                26: distance = 8193;
                                                27: distance = 12289;
                                                28: distance = 16385;
                                                default: distance = 24577;
                                            endcase
                                            case ($signed(distanceCode >>> 1))
                                                0: moreBits = 0;
                                                1: moreBits = 0;
                                                2: moreBits = 1;
                                                3: moreBits = 2;
                                                4: moreBits = 3;
                                                5: moreBits = 4;
                                                6: moreBits = 5;
                                                7: moreBits = 6;
                                                8: moreBits = 7;
                                                9: moreBits = 8;
                                                10: moreBits = 9;
                                                11: moreBits = 10;
                                                12: moreBits = 11;
                                                13: moreBits = 12;
                                                default: moreBits = 13;
                                            endcase
                                            distance = distance + MYHDL71_get4((extraLength + 5), moreBits);
                                            MYHDL72_adv(((extraLength + 5) + moreBits));
                                            offset <= ($signed({1'b0, do}) - distance);
                                            length <= tlength;
                                            cur_i <= 0;
                                            oraddr <= offset;
                                            state <= 5'b10101;
                                        end
                                        else begin
                                            state <= 5'b01111;
                                        end
                                    end
                                    cur_next <= 0;
                                end
                            end
                            else begin
                                if ((state == 5'b10101)) begin
                                    if ((!filled)) begin
                                        filled <= 1'b1;
                                    end
                                    else if ((nb < 4)) begin
                                        // pass
                                    end
                                    else if ((method == 0)) begin
                                        if ((cur_i < length)) begin
                                            oaddr <= do;
                                            obyte <= b3;
                                            MYHDL73_adv(8);
                                            cur_i <= (cur_i + 1);
                                            do <= (do + 1);
                                            o_oprogress <= (do + 1);
                                        end
                                        else if ((!final)) begin
                                            state <= 5'b00001;
                                        end
                                        else begin
                                            o_oprogress <= do;
                                            o_done <= 1'b1;
                                            state <= 5'b00000;
                                        end
                                    end
                                    else if ((cur_i < (length + 1))) begin
                                        oraddr <= (offset + cur_i);
                                        if ((cur_i == 1)) begin
                                            copy1 <= orbyte;
                                        end
                                        if ((cur_i > 1)) begin
                                            if (((offset + cur_i) == (do + 1))) begin
                                                obyte <= copy1;
                                            end
                                            else begin
                                                obyte <= orbyte;
                                            end
                                            oaddr <= do;
                                            o_oprogress <= (do + 1);
                                            do <= (do + 1);
                                        end
                                        cur_i <= (cur_i + 1);
                                    end
                                    else begin
                                        oaddr <= do;
                                        if (((offset + cur_i) == (do + 1))) begin
                                            obyte <= copy1;
                                        end
                                        else begin
                                            obyte <= orbyte;
                                        end
                                        do <= (do + 1);
                                        o_oprogress <= (do + 1);
                                        cur_next <= 0;
                                        state <= 5'b10011;
                                    end
                                end
                                else begin
                                    $write("unknown state?!");
                                    $write("\n");
                                    state <= 5'b00000;
                                end
                            end
                        end
                    endcase
                end
            end
        endcase
    end
end
 
 
always @(posedge clk) begin: DEFLATE_FILL_BUF
    if ((!reset)) begin
        $write("FILL RESET");
        $write("\n");
        nb <= 0;
        b1 <= 0;
        b2 <= 0;
        b3 <= 0;
        b4 <= 0;
    end
    else begin
        if ((isize < 4)) begin
            // pass
        end
        else if (((i_mode == 4) || (i_mode == 5))) begin
            nb <= 0;
        end
        else begin
            nb <= 4;
            b1 <= iram[(di & 127)];
            b2 <= iram[((di + 1) & 127)];
            b3 <= iram[((di + 2) & 127)];
            b4 <= iram[((di + 3) & 127)];
        end
    end
end
 
 
always @(posedge clk) begin: DEFLATE_ORAMWRITE
    oram[oaddr] <= obyte;
    leaves[lwaddr] <= wleaf;
end
 
 
always @(posedge clk) begin: DEFLATE_ORAMREAD
    orbyte <= oram[oraddr];
end
 
endmodule