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Subject: VCAR (ICraftsman) calling any users
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sreilly
Posts: 6
Online: User is Offline
7/11/2008 3:05 AM  
Hi there,

is there anyone out there using VCAR? I thought it might be good to share some info as i'm attempting to use it just now. Here is what i want to do with it:

At top-level of  our analog chip  i'm using  VCAR to hook-up all the nets that we "don't care" about & i'll do the rest by hand. So for example i use the command

fix net VNEG
fix net V_reference

...etc and that seems to work ok.

The first issue i'm having is with keep outs. In my .rul file i've added:

iccKeepouts = list(
    list( nil list(
    list(
        "and" list('("devlg" "drawing") '("gpoly" "drawing"))
        '("m1" "drawing") "routing" t
    )

So i'm hoping to stop the m1 routing over devlg AND gpoly but there are still instances where this is occuring. Firstly is my code correct (i created this through the rule editor, i'm reading the manula but this part is not clear to me yet). Alternatively could i use the .do commands to force this keepout. I'm also wondering if its the depth of hierarchy that is the issue in that when i export to VCAR its doesn't see the devlg or gpoly.

My second issue is that i haven't yet found a clear explanation for my unsuccesful nets, i.e those that do not complete. I can find the name of the net but is there a file that describes why this could not be completed?

Cheers

Stu

p.s here is some of my  .do file that may be of some use to someone:

unselect layer gpoly
unselect layer mt
unselect layer mtlg
rule IC (stack_via any_overlap)
fix net PWM
fix net ....etc
.
.
route 20
clean 20

A simple comand set though i also setup and check the same net option
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Forums > Custom IC > Custom IC Physical Design > VCAR (ICraftsman) calling any users


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