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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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 17 Dec 2005 19:58 Free EDA tool to do netlist debug/ECO in GUI mode |
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Debug or modify a large netlist manually is error prone and time consuming. GOF, Gates-On-the-Fly is a tool to do netlist trace debug and ECO in GUI mode.
It can be used as
. Netlist Browser.
. Partial schematic viewer.
. Netlist ECO tool.
. Gate level (with SDF file) simuation debug.
. Check gates position on silicon in GUI mode.
www.nandigits.com
It's free, try it now.
Nandy
Netlist Debug/ECO in GUI mode.
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RCircuit
Joined: 18 Dec 2005
Posts: 12
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| 18 Dec 2005 1:37 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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Hi Nandy
I tried it with message
Parsing uart.v...Done.
Warning!!! INVX2 can't be resolved in module uart.
Warning!!! AOI22X2 can't be resolved in module uart.
Warning!!! OAI2BB1X1 can't be resolved in module uart.
Warning!!! AOI22X2 can't be resolved in module uart.
Warning!!! OAI2BB1X1 can't be resolved in module uart.
Warning!!! AOI22X2 can't be resolved in module uart.
Warning!!! ...
What's that?
RCircuit
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 18 Dec 2005 1:41 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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Hi RCircuit
You should specify the cell library, like
gof -v youlibrary uart.v
Check GOF usage for detail
http://www.nandigits.com/p84.htm
Let me know if it helps.
Thanks.
Nandy
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RCircuit
Joined: 18 Dec 2005
Posts: 12
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| 18 Dec 2005 1:49 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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Yeah. They r gone.
Wahoo... Looks nice, I like the schematic view, it allows to move gates anywhere.
How large netlist can take?
Thanks.
RCircuit
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 18 Dec 2005 19:04 Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF has powerful Partial Schematic feature. Make it very easy to isolate the logic when you need to do ECO or debug.
The netlist size is unlimited as long as the computer has enough memory. And it won't sacrify speed.
64bits workstation is best choice when the netlist is huge.
The largest size netlist I have tried is 700M.
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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RCircuit
Joined: 18 Dec 2005
Posts: 12
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| 19 Dec 2005 18:28 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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| 700M gates? So large?
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 20 Dec 2005 4:55 Free EDA tool to do netlist debug/ECO in GUI mode |
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No it's in bytes. I tried 700M bytes netlist. Sorry for the confustion.
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 29 Dec 2005 23:22 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF , Gates-On-the-Fly new version
Dec 27, 2005. V2.093 released.
1.Add feature of interface to waveform viewer tools GTKWave and Verdi.
2.Enhance MacroCell support. To replace a cluster of logic cells (a logic cone) by a MacroCell.
3.Enhance Metal layers only ECO
www.nandigits.com
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wucaifeng
Joined: 31 Aug 2005
Posts: 6
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| 30 Dec 2005 1:49 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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I have tried on it, it is just so great.
is there some free small software that can import *.sdf document?
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 30 Dec 2005 6:39 Free EDA tool to do netlist debug/ECO in GUI mode |
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Can you be more specific on the function of the software?
GOF can read in SDF file, and fast access the delay information in the Schematic.
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 15 Jan 2006 16:48 Free EDA tool to do netlist debug/ECO in GUI mode |
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New release of GOF 2.095 can do Timing ECO in timing closure perfectly. Check this out.
http://www.nandigits.com/timingeco.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 02 Feb 2006 7:02 Free EDA tool to do netlist debug/ECO in GUI mode |
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Release V2.096
1. Implemented cells connectivity and distribution viewer on layout.
http://www.nandigits.com/view_cells_in_layout.htm
2. And enhanced clock tree trace
http://www.nandigits.com/clock_tree.htm
3. Improved Timing ECO
http://www.nandigits.com/timing_eco.htm
User will receive a commercial license key, if report a bug or give useful feature improvement advice.
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 10 Feb 2006 7:30 Free EDA tool to do netlist debug/ECO in GUI mode |
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Several demos (in animated GIF format)have been added. Check following link
http://www.nandigits.com/demos.htm
And one of the link
http://www.nandigits.com/dynapos.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 18 Feb 2006 6:26 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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New Release of GOF V2.097 with features
1. Integrate a parser for Synopsys Primetime Timing Report file.
2. Detect bottlenecks from timing report file.
3. Import related violated paths into Partial Schematic.
4. Visually isolating bottleneck on the schematic.
5. Users can control to draw schematic of violated paths by defining Start-Point, Through-Point and End-Point.
6. Wild card support to match Start/Through/End points.
7. Interactive with build-in ECO engine to fix the violated paths.
Check Timing ECO example
http://www.nandigits.com/timing_eco.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 05 Mar 2006 0:47 Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF V2.098 released with
1. Design statistic. List leaf cells in design. List sub-modules in design.
In GofViewer window left side hierarchical subwindow, select a module, right click to select pop menu, statistic of design.
http://www.nandigits.com/design_statistic.htm
2. Fix ECO cell replace.
3. User define schematic page number and size.
Download now.
http://www.nandigits.com/download.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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QuinnCheng
Joined: 24 Feb 2006
Posts: 6
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| 23 Mar 2006 7:53 Free EDA tool to do netlist debug/ECO in GUI mode |
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it is good!!
GOF, Gates On the Fly, is a graphical tool specialized in verilog netlist debug and modification. It allows users to process netlist in GUI mode. In IC Design flow, the traditional way to edit or debug netlist is a manual process or with some help of script tools like perl or tcl. The manual process is error prone and tedious. When it comes to SOC design with multi-million-gate size, the netlist processing is even harder and more complicate.
GOF's unique features make it the best tool for netlist debugging and editing.
Pure GUI mode with short learning curve
Flexible netlist browser
Powerful Partial Schematic
Isolate logic cone easily and fast
Large size netlist processing
Interface to waveform viewer tools, Verdi and GTKWave
Many build-in ECO Operations
Spare cells processing by changing Metal layers only.
MacroCell support to replace a cluster of logic cells
Save ECO in several formats
Easy to fit in other ASIC ECO flows
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 26 Mar 2006 6:07 Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF version 2.099 has verilog RTL debug capability built-in.
.Verilog RTL browser.
.List the design hierarchy.
.Colorize verilog code. Keywords, comments and nets.
.Double click on net to trace the driver or the net.
.Search function.
http://www.nandigits.com/rtl_viewer.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 05 Apr 2006 16:23 Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF version 2.100 has RTL viewer enhancement.
.Add line index which can be controlled on/off by setup.
.User can control colors of RTL viewer.
.Interface with GTKwave and Verdi.
Check the following link for detail.
http://www.nandigits.com/rtl_viewer.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 23 May 2006 6:15 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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The latest release of GOF v2.200 has big improvement in efficiency of memory usage.
An experiment has done to compare GOF with Verdi and GateVision's schematic feature. (Verdi has powerful RTL debug feature, this experiment only covered it's netlist processing and schematic engine).
To load 378M bytes netlist files on Pentium 4 Linux machine.
Load time, GateVision has longest time to load, 220 seconds. Verdi 130 seconds. GOF takes 70 only seconds.
Memory usage, Verdi has worst memory usage control. It needs 1.5 G bytes. GOF uses 643M bytes to process the 375M bytes netlists. GateVision runs a program to convert netlist to compressed data format which uses peak as much as 1.4 G bytes. After the conversion is done, it only takes 431M bytes.
Partial Schematic Interactivity, Verdi and GateVision have weak partial schematic interactivity. Users can't control the cells and wires location. GOF has very strong interactivity. Users can change cells position any time and edit/add/delete cells and connections.
ECO capability, GateVision doesn't have ECO features. Verdi/nECO has limited netlist ECO function. GOF has much more complete ECO operations.
Check link for detail
GateVision: http://www.concept.de/gv_index.html
Verdi/nECO: http://www.novas.com
GOF: http://www.nandigits.com
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jcchan
Joined: 28 Apr 2005
Posts: 33
Helped: 1
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| 13 Jun 2006 2:31 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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| thanks, it is very usefuly to me.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 08 Jul 2006 17:31 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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GOF Version 2.202 has Extract Logic Cone feature.
Starting from one cell, execute the Extract Logic Cone command, the logic cone driving the cell will be drawn on the schematic and automatically placed in proper position. The logic cone ends at ports or registers.
Click the link for detail
http://www.nandigits.com/extract_logic_cone.htm
Nandy
www.nandigits.com
Netlist Debug/ECO in GUI mode
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jackjtchan
Joined: 30 Jan 2002
Posts: 99
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| 11 Jul 2006 11:44 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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Thanks.
Simple but very useful.
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straw
Joined: 19 Nov 2004
Posts: 49
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| 24 Aug 2006 0:34 Free EDA tool to do netlist debug/ECO in GUI mode |
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| good ,thanks
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 26 Sep 2006 5:58 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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The most hard part of netlist ECO is to add more than hundreds of gates without re-synthesis. The new feature of GOF, Logic-Cone-ECO, is to make the process easier. The basic idea is to replace the old logic cone in old netlist by new logic cone from resynthesized netlist. The logic cone can have several or thousands of gates. Check the detail here.
http://www.nandigits.com/logic_cone_eco.htm
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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stiff
Joined: 20 May 2006
Posts: 9
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| 20 Dec 2007 9:37 Free EDA tool to do netlist debug/ECO in GUI mode |
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| i like the cpu design
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 12 Jun 2008 5:50 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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Several releases to add more features and fix bugs. The latest version 2.228 has information fast access. Instance, leaf cell name, and net name are all in hyperlink mode for fast information access by mouse click. Check it out.
http://www.nandigits.com/fast_information.htm
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 02 Jul 2008 5:54 Re: Free EDA tool to do netlist debug/ECO in GUI mode |
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V2.300 supports Linux 64 bits platform. It breaks the 4G bytes memory limitation. SOC design can easily have several Gigabytes size netlists. GOF is well positioned to handled modern SOC ASIC design.
http://www.nandigits.com
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RCircuit
Joined: 18 Dec 2005
Posts: 12
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| 03 Jul 2008 6:05 Free EDA tool to do netlist debug/ECO in GUI mode |
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| Great job. Is there any performance deterioration when tens giga bytes loaded? Verdi is crawling when I load gigas netlists on it.
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Nandy
Joined: 16 Dec 2005
Posts: 96
Helped: 2
Location: San Jose CA
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| 04 Jul 2008 5:44 Free EDA tool to do netlist debug/ECO in GUI mode |
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| GOF has implemented hashing mechanism. The netlist size doesn't affect the speed in netlist tracing.
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