Flatten a list of cells

I want to flatten a list of some 2000 cells in a Vrtuoso library. I want to flatten pcells and symbolic vias too. The list is in an ascii file. How would I do this?

pcell Generation

Hi , Can anyone help me regarding pcell generation. My problem is I want to make two matched capacitors common centroid layout. I am using CPP (poly capcitance) as invidual unit. I am using National Semiconductors 0.18um technolohy(cmos9). I am able to generate pcell but cannot pass the parameter. How to pass the parameters in pcell generation. Any tutorial for that. cheers Sabyasachi

How to simulate a netlist - no schematic available????

Hi guys. I have to simulate a netlist corresponding to a circuit, but I don't have the schematic of that. How I can correctly simulate the topology (AC simulation)? I have tried simulating the netlist by ocean script after creating the same directory structure as automatically created by cadence inside the simulation directory [I created: "/home/samiran/simulation/cell_name/spectre/schematic/netlist" directories. Inside "netlist" folder, I placed "netlist", "netlistFooter", "netlistHeader" files, and one more folder named - "amap" and created all necessary files that should be re

Creating Contacts

In the Cadence VLE, we have the menu item "Create"->"Create Contact", which can help us place an array of contacts with our own technology file. I am wondering that is there any existing SKILL function that I could pass the parameters such as "row" and "column", to automatically place an array of contacts without poping out the form??? I know there is a SKILL function called leHiCreateContact() opening the "Create Contact" form where we can input the parameters. But I want to automate the flow. Thanks. Ray

How to create a new funcyional button in encounter GUI window!

Hello, I am looking for a example in tcl/tk or SKILL to create a new custom button in encounter GUI with new encounter menu. Thanks! Bobby

how to generate schematic from netlist?

Hi all, How I can generate schematic from a given netlist in Virtuoso? Cheers Samiran

Stream-in with XStream (IC-OA 6.1.3): how to replace bit selector [x] with <x>

Hi, I recently switched from IC-CDB 5.1.41 to IC-OA 6.1.3. As a matter of fact, the stream-in/out tool PIPO has been replaced by XStream. The transition went smoothly except for one thing: For PIPO, the option "replaceBusBitChar" could be set to "true" in the template file. This had the effect that signal names like mysignal[12] were translated to mysignal<12> during stream-in and vice versa during stream-out. It seems that such a functionality is not available for XStream. The original option is not even mentioned in the PIPO->XStream adoption guide and there is no further info

CAD Administrator/ Contract/ IN

Tom Gugger Independent Recruiter tgugger@bex.net CAD Administrator/ Contract/ Indiana We have a situation where a company is trying to pull together drawings from several systems to one system. Below is what he wrote to us. This should be a three month or longer assignment in Elkhart, IN. All work must be done on- Site. If you feel you can solve the problem below and are interested, please forward your resume to tgugger@bex.net. =93We have a =93situation=94 here in Elkhart and I wondered if you may be i= n a position to help. When we moved the Smith Specialty Group (S

CAD/ SolidWorks/ Contract/ IN

Tom Gugger Independent Recruiter tgugger@bex.net CAD/ Solid Works/ Contract/ Elkhart IN We have an immediate start for an experienced person with solid CAD experience using SolidWorks. Experience must be recent and Not on an old version. The site is in Elkhart Indiana, all work is done on sight, and the rate is $42hr. There are no expenses or benefits. The contract should last until summer. Since there are no expenses, local and regional people are preferred. Pay will be by 1099 or C to C. We would like a Monday start date. Must be US Citizen or Greencard, No

Weird SKILL association table behaviour.

Hi, I've got some weird results when creating a pcell. When using rodCreatePath(), I used the ?size option as below: ------------------------------------------------------------------------------------------------------------------------------------- ?size ;B spacing + 1/2 width max(techInfo[M1]->minSpa -techInfo[M1]->encOD + techInfo[NP]- >spaOD + techInfo[NP]->encOD - techInfo[M1]->encOD) + (RING + 1/2.0)*M1Ring + ;C spacing + 1/2 width RING*( max(techInfo[M1]->minSpa -techInfo[M1]->encOD + techInfo[PP]->spaOD + techInfo[PP]->encOD -

OCEAN optimizeGoal documentation

Hi all! I'm getting confused from reading the documentation to the OCEAN optimizeGoal command. 1. in the description for b_percent: "Specifies whether the x_acceptable field is a percentage of the target. When this is specified, x_acceptable is ignored." So I set this to say that a) x_acceptable is meant to be a percentage value and b) x_acceptable is to be ignored... 2. The example: optimizeGoal( "bandwidth" 'bandwidth(v("/out") 3 "low") 'le 18M 15M ) I read this as "try and reduce the bandwidth below 18M. if this fails, 15M is acceptable". Shoul

spectre error

Hi All, I have Cadence installed in Sun Fire server (solaris 10). I use IC 5.10.41 IUS 82 and MMSIM 711. When I run simulation in Virtuoso Analog Design Environnement this message appear: *Error* Simulator executable 'spectre' cannot be located from the path $PATH Use SetShellEnvVar () call to correct your path in CIW Could you Help me please! Regards, Karim.

Results Browser Location Bar

I just want to ask if there is limitation on setting the Directory of Location Bar on Results Browser? I have a psf folder with the name: psf_npn1_pnp1 I could extract and plot the simulation result from this folder. But when I set the environment variable of wavescan by the following command: envSetVal("wavescan.browser" "dataDirHome" 'string "psf_npn1_pnp1") It does not reflect on the Location Bar of Results Browser. Does the wavescan.browser can't support the folder other than 'psf'? I hope anyone could help me regarding this matter. Thank you and God bless! (^_^

Spectre Interactive Mode

Dear All, I would like to know if there is a manual or reference for the Interactive Skill Front End commands that are used in spectre interactive mode. I searched in google and in Skill reference files that come along with Cadence documentation, and can't find anything useful till now. The only thing I'm able to get is the list of possible commands: sclGetParameter sclListParameter sclGetAttribute sclSetAttribute sclListAttribute sclGetAnalysis sclGetCircuit sclGetInstance sclGetModel sclGetPrimitive sclListAnalysis sclList

Limit multi-cut via array size

Hi! I'm using setNanoRouteMode -droutePostRouteSwapVia multiCut routeDesign -viaOpt in Encounter (9.1) to automatically convert single vias to multi-cut vias after the initial routing. The result is that I end up with via arrays of 50x50 vias since in parts of the design lots of space is available, especially on higher layers. Is there a way to limit size of the generated arrays to - say - 3x3 vias? My vias are generated from a GENERATE DEFAULT rule. I guess removing the generate rule and only explicitely defining small arrays would work, but I would like to avoid that

Mirror the object, schematic

IC 5. How can I do mirror? What can i type in bindkey file?

cdb2oa error

Hi all, I am using the conversion tool to convert the library from cdb to oa. I always encounter some warning and this particular error while performing. It would be nice to know more about the error and why the tool from assura is called while performing the conversion. Thanks a lot cheers Dinac ***************************************************** WARNING (CDBOA-639): There is more than one shape on the layer prBoundary in the cellview cells253cell/xn21d4/abstract. The translator creates an OpenAccess prBoundary object by usin

select via array

I need select via arrays of different column/rows so I can change the spacing and count due to a wide metal rule violation. The search that works is for via by name which wont allow me to select specific configurations. Does anyone have a skill routine or something so I can selective select the arrays? Thanks Rick

Stream out & Stream in: Virtuoso

Hi I'm using Cadence virtuoso layout editor, I want to stream out and stream In the GDS with preserving properties like "connectivity" and "property" . Right now, i'm loosing those connectivity information when i stream out GDS and stream In back. Could some help me in this regard. Thanks, Kitty Movva.

Threading with openResults() command

I am planning to have a threading of getting data from many psf Result folder. I am using Tcl/Tk and SKILL. Now from Tcl/Tk Threading, I have distributed the Simulation Result Extraction process into four local machine. Example: Local Machine:4 psf folders: /SimResult/test002 /SimResult/test003 /SimResult/test004 I just want to know if it is possible? Because I'm thinking that since every time I used the openResults() command, the results will be changed for the whole process. So the value that has been extracted by getData() will be from only one psf result folder. Is t

problem in oa2cdb conversion

Hi, I was trying to convert a library in OA database to CDB through command line, using the following command. oa2cdb -lib TEST_LIB -cdslibpath /home/username/cds.lib -cdblibpath / home/username/CDBLIB/ -tech /home/username/TECHLIB/tsmcN45 In the cds.lib file, the library TEST_LIB is defined. The folder CDBLIB is newly & already created. It gives the following errors after execution of the above command: *WARNING* envGetVal: Could not find variable 'dbStatCacheOn' in tool[.partition] 'cdba'. *WARNING* envGetVal: Could not find variable 'dbInstNamingGlobalInc'

pwlf bus

Hi, I want to use data from MATLAB as an input vector for my simulations. In the past, I created a seperate pwlf source for each bit of the bus. This worked good, for small small bus widths :). Now my bus is becoming quite large (+64b). What is the easiest way to import such data? Pieter

MonteCarlo Run in Ocean

Hello, I am a new user of Ocean platform and I am using command interface only (no GUI). I want to estimate mean/sigma of a cell delay using monte carlo analysis, but I am getting error. the error and scenario in mention below: Error: I am getting following run at the beginning of the monteRun(). ocean> monteRun() Requesting Monte Carlo simulation... *Error* parseString: argument #1 should be either a string or a symbol (type template = "SS") - (-1e-08 0 1e-08) ocean> Netlist: I have a parameter "delL" in my netlist. Input signal node name is "in" and output signal node na

view single layout net 5141

Hi all, In days gone by i used a Skill function that could take a Diva extracted view and create a new layout/extracted view with only the metal,poly,via & contact of pre-selected net(s) remaining i.e all other polygons were stripped away. For example, you may wish to see a layout only with GND in it, so you can review it's electromgration or weak points. Is there something similar kicking about for Assura or PVS...or perhaps even 5141 has such a function hidden away? The "mark net" function is close to what i want, but not quite. Thanks Stu

Generate instance and net name labels from schematic

Hello all, Is there any procedure in skill to generate attached labels of instance names on instances and net names on the nets from the schematic. Given that the layout is LVS clean using calibre or assura so that we get the connectivith information. And here how to get the net information and instance names from the schematic rather than the orginal instance names(cv~>instances~>name) from the layout. Is it possible through skill or else through Calibre or Assura itself.