Pcell Question?

[Praveen]

Hi,

Just a very quick question. Is it possible to code pcells using
skill++ or I have to adhere strictly to the functions documented in
skill language reference for coding the pcells.

thanking everyone in advance,
Praveen.

 

[Andrew Beckett]

SKILL++ functions are perfectly legal in pcells. SKILL++ can be broadly
divided into two parts - the Object System, and lexical scoping (i.e. the syntax
is the same, but the semantics are different).

One limitation is that the pcDefinePcell call needs to be interpreted with SKILL
(not SKILL++) semantics (if I remember rightly). You can call any SKILL++
functions from within the pcDefinePcell, but in general it's best to have the
pcDefinePcell in a file with a .il (not .ils) suffix. Often what I do is:

pcDefinePcell(
(cellView info...)
(parameter info)
ABdoTheActualPcellCode(param1 param2 param3 param4...)
)

And then ABdoTheActualPcellCode can be a SKILL++ function (defined in another
file with a .ils suffix). Of course all the extra code (not the file with the
pcDefinePcell in) needs to be loaded at run time - usually via a libInit.il file
in the library containing the pcell.

Best Regards,

Andrew.

On 7 Jan 2004 08:03:52 -0800, charugun@yahoo.com (Praveen) wrote:

Hi,

Just a very quick question. Is it possible to code pcells using
skill++ or I have to adhere strictly to the functions documented in
skill language reference for coding the pcells.

thanking everyone in advance,
Praveen.

--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd