Hsim output waveform ?

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mark_nctu

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hsim fsdb

Which tool is the best waveform viewer for hsim ?

Please tell me !


thanks
 

hsimspeed

FSDB format: Use nWave from debussy.
WDF format : Use waveform display tool from sandwork's spice explorer.
 

hsimspeed 8

I set the ".param HSIMOUTPUT=fsdb" and open the xxx.fsdb by

nWave. But the input waveform is difference by hspice simulation.

Do you know how to set the command ?

thanks
 

+hspice +convert +tr0 +wdf

HSIMOUTPUTVRES : Controls output voltage resolution. default value=1mv
HSIMOUTPUTIRES : Controls output current resolution. default value=1nA
HSIMOUTPUTTRES : Controls output time resolution. default value=1ps
The most important thing is the setting of HSIMOUTPUTVRES.
 

fsdb viewer

hsim default output is "fsdb doemat" --> .tran simulation
but if you use .AC simulation , nWave can not display , I don't know why ..

hspice output is .tr0 , use nWave will auto convert it to .fsdb format

which nWave version ?? some old nWave ( < 5.0) can not open new version ... and X86 PC version nWave also can not open
Unix version .fsdb file
 

hsimoutput

Why not the nassda develop the wave tools of using in Hsim??
It is so inconvenient for us.
 

hsim output


Thanks ericliu.
 

fsdb format



nWave can't see .AC simulation result. I use 5.2v17 for PC. It can
open .fsdb file.
 

hsimoutputvres

I think the nWave is the best viewer for HSIM.
However, if you simulate PLL, spiceexplorer of SandWork is good to measure jitter.

Silicon
 

nwave analog waveform

Where to find more information about SandWork ?

Thanks
 

veritools fast file format


Dear Ericliu:

I have set

HSIMOUTPUTVRES = 0.01u
HSIMOUTPUTIRES = 0.01u

I can see correct input waveform, but output result is difference.
(compare Hspice result)
 

hsim hsimparam

The most accurate simulation setting is the parameter "hsimspice=3".
After setting,the simulation speed is very slow, but the result is more accurate. If you still cann't get good simulation result when compared with spice, you should accept the fact that this is the limitation of HSIM.
Note: HSIMOUTVRES is for the resolution of output waveform, it cann't improve the simulation accuracy.
 

hspice output current

Hello,
Did anyone do comparison with hsim and hspice or other eda tools?
In analog circuit, the result seems like not a trustable one...
And, anyone try digital or mixed mode??

Regards,
 

hsimtimescale


Thanks for your suggest.
 

vsim fsdb

shiowjyh said:
Hello,
Did anyone do comparison with hsim and hspice or other eda tools?
In analog circuit, the result seems like not a trustable one...
And, anyone try digital or mixed mode??

Regards,
Click to expand...

In hsim, you can trade-off simualtion speed and precision.
If you set hsim's precision the same as hspice, their speed will
be the same slow.
 

nwave　analog waveform

I know NASSDA's HSIM can output Veritools' fast file format also.
But somehow Nassda's support team does not really know how to set it up.. Hopefully they are aware of their own features..

I usually use Undertow from Veritools.. Cheap and can read pretty much all the digital/analog dump files.
 

fsdb nwave

I use nWave packed with cadence tools such as soc encounter.It works better!
 

hsim output format

Tools depend on the file format you dumped
 

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