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Forums > Digital IC > Floorplanning, Place and route

Subject: Insertion of I/O ports location in First Encounter
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adi_j
Posts: 4
Online: User is Offline
3/31/2007 8:49 AM  

Hi all.
I know there is an option to specify using the GUI the location of the design's input and output ports in First Encounter.
However, this can be a very tedious job to do each time I want to P&R the design after minor changes in the RTL.
Is there a way to import some kind of file with those definitions ? I didn't find such option.
I thought of writing a script that will do the location specifying automatically using First Encounter's command for this option but for some reason, the command doesn't appear in the command log - can you direct me to the proper command for specifying the location of ports?

Help would be very much appreciated,
Adi.
lisiang
Moderator
Posts: 48
Online: User is Offline
4/01/2007 11:23 PM  
if you check out the doc soceUG.pdf under Data Preparation, it talked about how to create the I/O spec file (using Design-> Save->IO) after you edited it the first time in Encounter. You can hand edit it later and re-load it back using "loadIoFile".

li siang
EngHan
Posts: 65
Online: User is Offline
4/13/2007 2:16 AM  
Hi Adj,

I use the file "pad.io" to specify my pads or pins. Please see the user guide for the format of this file.

Sometime, I have to use DEF format (I write a simple awk script to generate the DEF file). I have to use DEF if I have two pins connect to the same net (e.g. a feed-through or to ease top-level routing). It seem that pad.io does not support this. Anyone know how to do this with pad.io? I will reduce some pain for me to craft the DEF. Thanks.

Regards,
Eng Han
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Forums > Digital IC > Floorplanning, Place and route > Insertion of I/O ports location in First Encounter


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