OpenCores
URL https://opencores.org/ocsvn/versatile_counter/versatile_counter/trunk

Subversion Repositories versatile_counter

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    from Rev 19 to Rev 20
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  •

Rev 19 → Rev 20

/versatile_counter/trunk/bench/vc_tb.v
0,0 → 1,5
module vc_tb ();
 
dut: vc (
.
)
/versatile_counter/trunk/bench/versatile_counter_tb.v
51,7 → 51,7
.clear(clear),
.cke(cke),
.set(set),
// .rew(rew),
.rew(rew),
.q(),
// .q_next(),
// .z(),
/versatile_counter/trunk/rtl/verilog/versatile_counter.v
1,17 → 1,20
`include "versatile_counter_defines.v"
`define LFSR_LENGTH `CNT_LENGTH
`define LFSR_LENGTH cnt_length
`include "lfsr_polynom.v"
`let CNT_INDEX=CNT_LENGTH-1
`ifndef CNT_MODULE_NAME
`define CNT_MODULE_NAME vcnt
`endif
module `CNT_MODULE_NAME
(
`ifdef CNT_TYPE_GRAY
output reg [`CNT_LENGTH:1] q,
output reg [cnt_length:1] q,
`ifdef CNT_Q_BIN
output [`CNT_LENGTH:1] q_bin,
output [cnt_length:1] q_bin,
`endif
`else
`ifdef CNT_Q
output [`CNT_LENGTH:1] q,
output [cnt_length:1] q,
`endif
`endif
`ifdef CNT_CLEAR
27,7 → 30,7
input cke,
`endif
`ifdef CNT_QNEXT
output [`CNT_LENGTH:1] q_next,
output [cnt_length:1] q_next,
`endif
`ifdef CNT_Z
output z,
35,26 → 38,40
`ifdef CNT_ZQ
output reg zq,
`endif
`ifdef CNT_LEVEL1
output reg level1,
`endif
`ifdef CNT_LEVEL2
output reg level2,
`endif
input clk,
input rst
);
parameter cnt_length = `CNT_LENGTH;
parameter cnt_reset_value = `CNT_RESET_VALUE;
`ifdef CNT_SET
parameter set_value = `CNT_SET_VALUE;
parameter set_value = cnt_length'd`CNT_SET_VALUE;
`endif
`ifdef CNT_WRAP
parameter wrap_value = `CNT_WRAP_VALUE;
`endif
parameter wrap_value = cnt_length'd`CNT_WRAP_VALUE;
`endif
`ifdef CNT_LEVEL1
parameter level1_value = cnt_length'd`CNT_LEVEL1_VALUE;
`endif
`ifdef CNT_LEVEL2
parameter level2_value = cnt_length'd`CNT_LEVEL2_VALUE;
`endif
 
// internal q reg
reg [`CNT_LENGTH:1] qi;
reg [cnt_length:1] qi;
`ifndef CNT_QNEXT
wire [`CNT_LENGTH:1] q_next;
wire [cnt_length:1] q_next;
`endif
`ifdef CNT_REW
wire [`CNT_LENGTH:1] q_next_fw;
wire [`CNT_LENGTH:1] q_next_rew;
wire [cnt_length:1] q_next_fw;
wire [cnt_length:1] q_next_rew;
`endif
 
`ifndef CNT_REW
63,35 → 80,35
assign q_next_fw =
`endif
`ifdef CNT_CLEAR
clear ? `CNT_LENGTH'd0 :
clear ? cnt_length'd0 :
`endif
`ifdef CNT_SET
set ? set_value :
`endif
`ifdef CNT_WRAP
(qi == wrap_value) ? `CNT_LENGTH'd0 :
(qi == wrap_value) ? cnt_length'd0 :
`endif
`ifdef CNT_TYPE_LFSR
{qi[`CNT_INDEX:1],~(`LFSR_FB)};
`else
qi + `CNT_LENGTH'd1;
qi + cnt_length'd1;
`endif
`ifdef CNT_REW
assign q_next_rew =
`ifdef CNT_CLEAR
clear ? `CNT_LENGTH'd0 :
clear ? cnt_length'd0 :
`endif
`ifdef CNT_SET
set ? set_value :
`endif
`ifdef CNT_WRAP
(qi == `CNT_LENGTH'd0) ? wrap_value :
(qi == cnt_length'd0) ? wrap_value :
`endif
`ifdef CNT_TYPE_LFSR
{~(`LFSR_FB_REW),qi[`CNT_LENGTH:2]};
{~(`LFSR_FB_REW),qi[cnt_length:2]};
`else
qi - `CNT_LENGTH'd1;
qi - cnt_length'd1;
`endif
`endif
101,7 → 118,7
always @ (posedge clk or posedge rst)
if (rst)
qi <= `CNT_LENGTH'd0;
qi <= cnt_length'd0;
else
`ifdef CNT_CE
if (cke)
127,7 → 144,7
`endif
`ifdef CNT_Z
assign z = (q == `CNT_LENGTH'd0);
assign z = (q == cnt_length'd0);
`endif
 
`ifdef CNT_ZQ
138,6 → 155,35
`ifdef CNT_CE
if (cke)
`endif
zq <= q_next == `CNT_LENGTH'd0;
zq <= q_next == cnt_length'd0;
`endif
 
`ifdef CNT_LEVEL1
always @ (posedge clk or posedge rst)
if (rst)
level1 <= 1'b0;
else
`ifdef CNT_CE
if (cke)
`endif
if (q_next == level1_value)
level1 <= 1'b1;
else if (q == level1_value & rew)
level1 <= 1'b0;
`endif
 
`ifdef CNT_LEVEL2
always @ (posedge clk or posedge rst)
if (rst)
level2 <= 1'b0;
else
`ifdef CNT_CE
if (cke)
`endif
if (q_next == level2_value)
level2 <= 1'b1;
else if (q == level2_value & rew)
level2 <= 1'b0;
`endif
 
endmodule
/versatile_counter/trunk/rtl/verilog/versatile_counter_generator.php
0,0 → 1,300
#!/usr/bin/php
<?php
 
function __autoload($className) {
include "$className.class.php";
}
 
if(!isset($argv[1])) {
?>
Usage: <?php echo basename($argv[0]); ?> <fileName>
<?php
die(1);
}
 
$csv = new CSV($argv[1]);
 
$counter = $csv->getRow();
$csv->parseHeader();
$inputs = $csv->getRow();
$csv->parseHeader();
$outputs = $csv->getRow();
$csv->parseHeader();
$wrap = $csv->getRow();
$csv->parseHeader();
$parameters = $csv->getRow();
 
$length = $parameters['length'];
 
# copyright
echo "//////////////////////////////////////////////////////////////////////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// Versatile counter ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// Description ////" . PHP_EOL;
echo "//// Versatile counter, a reconfigurable binary, gray or LFSR ////" . PHP_EOL;
echo "//// counter ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// To Do: ////" . PHP_EOL;
echo "//// - add LFSR with more taps ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// Author(s): ////" . PHP_EOL;
echo "//// - Michael Unneback, unneback@opencores.org ////" . PHP_EOL;
echo "//// ORSoC AB ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//////////////////////////////////////////////////////////////////////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// Copyright (C) 2009 Authors and OPENCORES.ORG ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// This source file may be used and distributed without ////" . PHP_EOL;
echo "//// restriction provided that this copyright statement is not ////" . PHP_EOL;
echo "//// removed from the file and that any derivative work contains ////" . PHP_EOL;
echo "//// the original copyright notice and the associated disclaimer. ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// This source file is free software; you can redistribute it ////" . PHP_EOL;
echo "//// and/or modify it under the terms of the GNU Lesser General ////" . PHP_EOL;
echo "//// Public License as published by the Free Software Foundation; ////" . PHP_EOL;
echo "//// either version 2.1 of the License, or (at your option) any ////" . PHP_EOL;
echo "//// later version. ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// This source is distributed in the hope that it will be ////" . PHP_EOL;
echo "//// useful, but WITHOUT ANY WARRANTY; without even the implied ////" . PHP_EOL;
echo "//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////" . PHP_EOL;
echo "//// PURPOSE. See the GNU Lesser General Public License for more ////" . PHP_EOL;
echo "//// details. ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//// You should have received a copy of the GNU Lesser General ////" . PHP_EOL;
echo "//// Public License along with this source; if not, download it ////" . PHP_EOL;
echo "//// from http://www.opencores.org/lgpl.shtml ////" . PHP_EOL;
echo "//// ////" . PHP_EOL;
echo "//////////////////////////////////////////////////////////////////////" . PHP_EOL;
 
echo PHP_EOL . "// " . $counter['type'] . " counter" . PHP_EOL;
echo "module " . $counter['Name']. " (";
 
if ($inputs['clear']=="1") { echo "clear,"; }
if ($inputs['set']=="1") { echo " set,"; }
if ($inputs['cke']=="1") { echo "cke, "; }
if ($inputs['rew']=="1") { echo " rew,"; }
 
if ($outputs['q']=="1") { echo " q,"; }
if ($outputs['q_bin']=="1") { echo "q_bin,"; }
if ($outputs['z']=="1") { echo " z,"; }
if ($outputs['zq']=="1") { echo " zq,"; }
if ($outputs['level1']=="1") { echo " level1,"; }
if ($outputs['level2']=="1") { echo " level2,"; }
echo " rst,";
echo " clk);" . PHP_EOL;
echo PHP_EOL;
 
echo " parameter length = " . $length . ";" . PHP_EOL;
 
if ($inputs['clear']=="1") { echo " input " . "clear;" . PHP_EOL; }
if ($inputs['set']=="1") { echo " input " . "set;" . PHP_EOL; }
if ($inputs['cke']=="1") { echo " input " . "cke;" . PHP_EOL; }
if ($inputs['rew']=="1") { echo " input " . "rew;" . PHP_EOL; }
 
if ($outputs['q']=="1") { echo " output [length:1] q;" . PHP_EOL; }
if ($outputs['q_bin']=="1") { echo " output [length:1] q_bin;" . PHP_EOL; }
if ($outputs['z']=="1") { echo " output z;" . PHP_EOL; }
if ($outputs['zq']=="1") { echo " output reg zq;" . PHP_EOL; }
if ($outputs['level1']=="1") { echo " output reg level1;" . PHP_EOL; }
if ($outputs['level2']=="1") { echo " output reg level2;" . PHP_EOL; }
echo " input rst;" . PHP_EOL;
echo " input clk;" . PHP_EOL;
echo PHP_EOL;
 
if ($parameters['clear_value']!="") { echo " parameter clear_value = " . $parameters['clear_value'] . ";" . PHP_EOL; }
if ($parameters['set_value']!="") { echo " parameter set_value = " . $parameters['set_value'] . ";" . PHP_EOL; }
if ($parameters['wrap_value']!="") { echo " parameter wrap_value = " . $parameters['wrap_value'] . ";" . PHP_EOL; }
if ($parameters['level1']!="") { echo " parameter level1_value = " . $parameters['level1'] . ";" . PHP_EOL; }
if ($parameters['level2']!="") { echo " parameter level2_value = " . $parameters['level2'] . ";" . PHP_EOL; }
 
echo PHP_EOL . " reg [length:1] qi;" . PHP_EOL;
if ($counter['type']=="LFSR") { echo " reg lfsr_fb";}
if ($counter['type']=="LFSR" and $inputs['rew']==1) { echo ", lfsr_fb_rew;" . PHP_EOL; } else { echo ";" . PHP_EOL; }
if ($inputs['rew']==1) { echo " wire [length:1] q_next, q_next_fw, q_next_rew;" . PHP_EOL; }
else { echo " wire [length:1] q_next;" . PHP_EOL; }
if ($counter['type']=="LFSR" and $inputs['rew']==1) {
echo " reg [32:1] polynom_rew;" . PHP_EOL;
echo " integer j;" . PHP_EOL;
}
 
if ($counter['type']=="LFSR") {
echo " reg [32:1] polynom;" . PHP_EOL;
echo " integer i;" . PHP_EOL . PHP_EOL;
echo " always @ (qi)" . PHP_EOL;
echo " begin
case (length)
2: polynom = 32'b11; // 0x3
3: polynom = 32'b110; // 0x6
4: polynom = 32'b1100; // 0xC
5: polynom = 32'b10100; // 0x14
6: polynom = 32'b110000; // 0x30
7: polynom = 32'b1100000; // 0x60
8: polynom = 32'b10111000; // 0xb8
9: polynom = 32'b100010000; // 0x110
10: polynom = 32'b1001000000; // 0x240
11: polynom = 32'b10100000000; // 0x500
12: polynom = 32'b100000101001; // 0x829
13: polynom = 32'b1000000001100; // 0x100C
14: polynom = 32'b10000000010101; // 0x2015
15: polynom = 32'b110000000000000; // 0x6000
16: polynom = 32'b1101000000001000; // 0xD008
17: polynom = 32'b10010000000000000; // 0x12000
18: polynom = 32'b100000010000000000; // 0x20400
19: polynom = 32'b1000000000000100011; // 0x40023
20: polynom = 32'b10000010000000000000; // 0x82000
21: polynom = 32'b101000000000000000000; // 0x140000
22: polynom = 32'b1100000000000000000000; // 0x300000
23: polynom = 32'b10000100000000000000000; // 0x420000
24: polynom = 32'b111000010000000000000000; // 0xE10000
25: polynom = 32'b1001000000000000000000000; // 0x1200000
26: polynom = 32'b10000000000000000000100011; // 0x2000023
27: polynom = 32'b100000000000000000000010011; // 0x4000013
28: polynom = 32'b1100100000000000000000000000; // 0xC800000
29: polynom = 32'b10100000000000000000000000000; // 0x14000000
30: polynom = 32'b100000000000000000000000101001; // 0x20000029
31: polynom = 32'b1001000000000000000000000000000; // 0x48000000
32: polynom = 32'b10000000001000000000000000000011; // 0x80200003
default: polynom = 32'b0;
endcase
lfsr_fb = qi[length];
for (i=length-1; i>=1; i=i-1) begin
if (polynom[i])
lfsr_fb = lfsr_fb ~^ qi[i];
end
end";
echo PHP_EOL;
}
 
if ($inputs['rew']!=1) { echo " assign q_next = "; } else { echo " assign q_next_fw = "; }
if ($inputs['clear']==1) { echo " clear ? {length{1'b0}} :";}
if ($inputs['set']==1) { echo " set ? set_value :";}
if ($wrap['wrap']==1) { echo "(qi == wrap_value) ? {length{1'b0}} :";}
if ($counter['type']=="LFSR") { echo "{qi[length-1:1],lfsr_fb};"; } else { echo "qi + length'd1;"; }
echo PHP_EOL;
 
if ($inputs['rew']) {
if ($counter['type']=="LFSR") {
echo " always @ (qi)" . PHP_EOL;
echo " begin
case (length)
2: polynom_rew = 32'b11;
3: polynom_rew = 32'b110;
4: polynom_rew = 32'b1100;
5: polynom_rew = 32'b10100;
6: polynom_rew = 32'b110000;
7: polynom_rew = 32'b1100000;
8: polynom_rew = 32'b10111000;
9: polynom_rew = 32'b100010000;
10: polynom_rew = 32'b1001000000;
11: polynom_rew = 32'b10100000000;
12: polynom_rew = 32'b100000101001;
13: polynom_rew = 32'b1000000001100;
14: polynom_rew = 32'b10000000010101;
15: polynom_rew = 32'b110000000000000;
16: polynom_rew = 32'b1101000000001000;
17: polynom_rew = 32'b10010000000000000;
18: polynom_rew = 32'b100000010000000000;
19: polynom_rew = 32'b1000000000000100011;
20: polynom_rew = 32'b10000010000000000000;
21: polynom_rew = 32'b101000000000000000000;
22: polynom_rew = 32'b1100000000000000000000;
23: polynom_rew = 32'b10000100000000000000000;
24: polynom_rew = 32'b111000010000000000000000;
25: polynom_rew = 32'b1001000000000000000000000;
26: polynom_rew = 32'b10000000000000000000100011;
27: polynom_rew = 32'b100000000000000000000010011;
28: polynom_rew = 32'b1100100000000000000000000000;
29: polynom_rew = 32'b10100000000000000000000000000;
30: polynom_rew = 32'b100000000000000000000000101001;
31: polynom_rew = 32'b1001000000000000000000000000000;
32: polynom_rew = 32'b10000000001000000000000000000011;
default: polynom_rew = 32'b0;
endcase
// rotate left
polynom_rew[length:1] = { polynom_rew[length-2:1],polynom_rew[length] };
lfsr_fb_rew = qi[length];
for (i=length-1; i>=1; i=i-1) begin
if (polynom_rew[i])
lfsr_fb_rew = lfsr_fb_rew ~^ qi[i];
end
end";
echo PHP_EOL;
 
}
echo " assign q_next_rew = ";
if ($inputs['clear']==1) { echo " clear ? clear_value :";}
if ($inputs['set']==1) { echo " set ? set_value :";}
if ($wrap['wrap']==1) { echo "(qi == wrap_value) ? {length{1'b0}} :";}
if ($counter['type']=="LFSR") { echo "{lfsr_fb_rew,qi[length:2]};"; } else { echo "qi - length'd1;"; }
echo PHP_EOL;
echo " assign q_next = rew ? q_next_rew : q_next_fw;" . PHP_EOL;
}
 
echo "
always @ (posedge clk or posedge rst)
if (rst)
qi <= {length{1'b0}};
else" . PHP_EOL;
if ($inputs['cke']) { echo " if (cke)" . PHP_EOL;}
echo " qi <= q_next;" . PHP_EOL;
echo PHP_EOL;
 
if ($outputs['q']) {
if ($counter['type'] == "GRAY" or $counter['type'] == "gray") {
echo "always @ (posedge clk or posedge rst)
if (rst)
q <= ;
else";
if ($inputs['cke']) { echo " if (cke)" . PHP_EOL; }
} else {
echo " assign q = qi;" . PHP_EOL;
}
}
echo PHP_EOL;
 
if ($outputs['z']) { echo " assign z = (q == {length{1'b0}});" . PHP_EOL; }
 
if ($outputs['zq']) {
echo "
always @ (posedge clk or posedge rst)
if (rst)
zq <= 1'b1;
else" . PHP_EOL;
if ($inputs['cke']) { echo " if (cke)" . PHP_EOL; }
echo " zq <= q_next == {length{1'b0}};" . PHP_EOL;
}
 
if ($outputs['level1']) {
echo "
always @ (posedge clk or posedge rst)
if (rst)
level1 <= 1'b0;
else" . PHP_EOL;
if ($inputs['cke']) { echo " if (cke)" . PHP_EOL; }
echo " if (q_next == level1_value)
level1 <= 1'b1;
else if (q == level1_value & rew)
level1 <= 1'b0;" . PHP_EOL;
}
 
if ($outputs['level2']) {
echo "
always @ (posedge clk or posedge rst)
if (rst)
level2 <= 1'b0;
else" . PHP_EOL;
if ($inputs['cke']) { echo " if (cke)" . PHP_EOL; }
echo " if (q_next == level2_value)
level2 <= 1'b1;
else if (q == level2_value & rew)
level2 <= 1'b0;" . PHP_EOL;
}
 
echo "endmodule" . PHP_EOL;
versatile_counter/trunk/rtl/verilog/versatile_counter_generator.php Property changes : Added: svn:executable ## -0,0 +1 ## +* \ No newline at end of property Index: versatile_counter/trunk/rtl/verilog/Makefile =================================================================== --- versatile_counter/trunk/rtl/verilog/Makefile (revision 19) +++ versatile_counter/trunk/rtl/verilog/Makefile (revision 20) @@ -1,3 +1,3 @@ all: - vpp versatile_counter.v > tmp1.v - vppreproc --simple tmp1.v | cat copyright.v - > counter.v + excel2csv vc.xls -S , + ./versatile_counter_generator.php Versatile_counter.csv > vc.v Index: versatile_counter/trunk/rtl/verilog/vc.xls =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: versatile_counter/trunk/rtl/verilog/vc.xls =================================================================== --- versatile_counter/trunk/rtl/verilog/vc.xls (nonexistent) +++ versatile_counter/trunk/rtl/verilog/vc.xls (revision 20)
versatile_counter/trunk/rtl/verilog/vc.xls Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: versatile_counter/trunk/rtl/verilog/versatile_counter_defines.v =================================================================== --- versatile_counter/trunk/rtl/verilog/versatile_counter_defines.v (revision 19) +++ versatile_counter/trunk/rtl/verilog/versatile_counter_defines.v (revision 20) @@ -18,7 +18,7 @@ `define CNT_LENGTH 4 // async reset value -`define CNT_RESET_VALUE `CNT_LENGTH'h0 +`define CNT_RESET_VALUE 0 // clear `define CNT_CLEAR @@ -25,11 +25,11 @@ // set `define CNT_SET -`define CNT_SET_VALUE `CNT_LENGTH'h9 +`define CNT_SET_VALUE 9 // wrap around creates shorter cycle than maximum length //`define CNT_WRAP -`define CNT_WRAP_VALUE `CNT_LENGTH'h9 +`define CNT_WRAP_VALUE 9 // clock enable `define CNT_CE @@ -43,3 +43,10 @@ // q_next=0 as a registered output //`define CNT_ZQ +// level indicator 1 +`define CNT_LEVEL1 +`define CNT_LEVEL1_VALUE 1 + +// level indicator 2 +`define CNT_LEVEL2 +`define CNT_LEVEL2_VALUE 2
/versatile_counter/trunk/doc/versatile_counter.pdf Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream
/versatile_counter/trunk/doc/src/versatile_counter.odt Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream
/versatile_counter/trunk/doc/src/block.dia Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream
/versatile_counter/trunk/doc/src/block.png Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream
/versatile_counter/trunk/sim/rtl_sim/bin/wave.do
1,29 → 1,29
onerror {resume}
quietly WaveActivateNextPane {} 0
add wave -noupdate -format Literal /lfsr_tb/DUT/set_value
#add wave -noupdate -format Literal /lfsr_tb/DUT/wrap_value
add wave -noupdate -format Literal /lfsr_tb/DUT/q
add wave -noupdate -format Logic /lfsr_tb/DUT/clear
add wave -noupdate -format Logic /lfsr_tb/DUT/set
add wave -noupdate -format Logic /lfsr_tb/DUT/cke
add wave -noupdate -format Logic /lfsr_tb/DUT/clk
add wave -noupdate -format Logic /lfsr_tb/DUT/rst
add wave -noupdate -format Literal /lfsr_tb/DUT/qi
add wave -noupdate -format Literal /lfsr_tb/DUT/q_next
TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 1} {1895 ns} 0} {{Cursor 5} {7898 ns} 0}
configure wave -namecolwidth 210
configure wave -valuecolwidth 140
configure wave -justifyvalue left
configure wave -signalnamewidth 0
configure wave -snapdistance 10
configure wave -datasetprefix 0
configure wave -rowmargin 4
configure wave -childrowmargin 2
configure wave -gridoffset 0
configure wave -gridperiod 1
configure wave -griddelta 40
configure wave -timeline 0
configure wave -timelineunits ps
update
WaveRestoreZoom {0 ns} {10500 ns}
onerror {resume}
quietly WaveActivateNextPane {} 0
add wave -noupdate -format Logic /lfsr_tb/DUT/clear
add wave -noupdate -format Logic /lfsr_tb/DUT/set
add wave -noupdate -format Logic /lfsr_tb/DUT/cke
add wave -noupdate -format Literal /lfsr_tb/DUT/q
add wave -noupdate -format Logic /lfsr_tb/DUT/rst
add wave -noupdate -format Logic /lfsr_tb/DUT/clk
add wave -noupdate -format Literal /lfsr_tb/DUT/qi
add wave -noupdate -format Logic /lfsr_tb/DUT/lfsr_fb
add wave -noupdate -format Logic /lfsr_tb/DUT/q_next
add wave -noupdate -format Logic /lfsr_tb/DUT/rew
TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 1} {1005 ns} 0}
configure wave -namecolwidth 150
configure wave -valuecolwidth 100
configure wave -justifyvalue left
configure wave -signalnamewidth 0
configure wave -snapdistance 10
configure wave -datasetprefix 0
configure wave -rowmargin 4
configure wave -childrowmargin 2
configure wave -gridoffset 0
configure wave -gridperiod 1
configure wave -griddelta 40
configure wave -timeline 0
configure wave -timelineunits ns
update
WaveRestoreZoom {862 ns} {1552 ns}
/versatile_counter/trunk/sw/VersatileCounter.php
0,0 → 1,16
#!/usr/bin/php
<?php
 
include (dirname(__FILE__) . '/VersatileCounter.class.php');
 
if(isset($argv[1]) and !isset(VersatileCounter::$masks[$argv[1]])) {
echo "Error: Bitmask not found" . PHP_EOL;
die(1);
}
 
$c = new VersatileCounter(isset($argv[1])?$argv[1]:8);
$c->run(isset($argv[2])?$argv[2]:2,isset($argv[3]));
 
if(!isset($argv[3])) {
echo $c->state() . PHP_EOL;
}
versatile_counter/trunk/sw/VersatileCounter.php Property changes : Added: svn:executable ## -0,0 +1 ## +* \ No newline at end of property Index: versatile_counter/trunk/sw/VersatileCounter.class.php =================================================================== --- versatile_counter/trunk/sw/VersatileCounter.class.php (nonexistent) +++ versatile_counter/trunk/sw/VersatileCounter.class.php (revision 20) @@ -0,0 +1,100 @@ + 0x3, + 3 => 0x6, + 4 => 0xC, + 5 => 0x14, + 6 => 0x30, + 7 => 0x60, + 8 => 0xB8, + 9 => 0x110, + 10 => 0x240, + 11 => 0x500, + 12 => 0x829, + 13 => 0x100C, + 14 => 0x2015, + 15 => 0x6000, + 16 => 0xD008, + 17 => 0x12000, + 18 => 0x20400, + 19 => 0x40023, + 20 => 0x82000, + 21 => 0x140000, + 22 => 0x300000, + 23 => 0x420000, + 24 => 0xE10000, + 25 => 0x1200000, + 26 => 0x2000023, + 27 => 0x4000013, + 28 => 0xC800000, + 29 => 0x14000000, + 30 => 0x20000029, + 31 => 0x48000000, + 32 => 0x80200003 + + ); + + private $length, $mask; + + private $state = 0; + + function __construct($length = 8) { + $this->length = $length; + $this->mask = self::$masks[$length]; + } + + function state() { + return sprintf("%0" . $this->length . "b",$this->state); + } + + function tick() { + + $ns = ($this->state * 2) & (pow(2,$this->length) - 1); + + $new = $this->state & pow(2,$this->length - 1); + + for($i = $this->length - 2;$i >= 0;$i--) { + + if($this->mask & pow(2,$i)) { + $new = (int) ($new xor ($this->state & pow(2,$i))); + } + + } + + if($new == 0) { + $ns++; + } + + $this->state = $ns; + + } + + function run($ticks,$output = false) { + + if($output) { + printf("%" . strlen($ticks) . "u: %0" . $this->length . "b\n",0,$this->state); + } + + for($i=0;$i<$ticks;$i++) { + $this->tick(); + if($output) { + printf("%" . strlen($ticks) . "u: %0" . $this->length . "b\n",$i+1,$this->state); + } + } + + } + + static function GetState($length,$ticks) { + + $VC = new self($length); + $VC->run($ticks); + + return $VC->state; + + } + +} Index: versatile_counter/trunk/sw/VersatileCounter.kpf =================================================================== --- versatile_counter/trunk/sw/VersatileCounter.kpf (nonexistent) +++ versatile_counter/trunk/sw/VersatileCounter.kpf (revision 20) @@ -0,0 +1,7 @@ + + + + + 1 + +

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