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Spaceborne Calin wrote:
> 
> Hello
> I try to import a gds file in magic.
> The problem is that i only see one subcell at the time
> o seeing the entire layout seems imposible. Is there a
> way to see all layout ? (i tried the "calma flaten"
> command and then "calma write file" but the "file" is
> empty).
> 
> Please help
> 
> Bye
> 
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  i think it depends on what tool made the calma in the first 
place.  when i read in gds, i do this:

	1. cif istyle <cifinput stylename>
	2. calma read <filename>
	3. write force
	4. load <topcell>

  make sure you do this in a directory that doesnt have .mag
files in it already, because youll nuke cells if you dont watch 
out.  do this in a empty directory.  also, we use 'space' for 
extraction (LVS) and backannotation.  it also has a few goodies
to inspect gds files, and they are very useful for looking at 
a gds file that was created by someone else.  if you get 'space'
you can use 'cga' to convert gds to ascii. 

http://cas.et.tudelft.nl/~space/

this gives you the structure (instances/references), layers used, 
and geometries..  for instance heres an example:

  i want to know what layers are used in a gds file:

erik AT solusek% cga CHIP_804_REL164 DOT gds | grep LAYER | sort -k 2 |
uniq          
cga: warning: last record is not ENDLIB
cga: warning: no padding found
cga: -- program finished --
LAYER 1
LAYER 11
LAYER 12
LAYER 13
LAYER 15
LAYER 17
LAYER 18
LAYER 19
LAYER 2
LAYER 23
LAYER 25
LAYER 26
LAYER 27
LAYER 31
LAYER 32
LAYER 34
LAYER 35
LAYER 36
LAYER 52
LAYER 53
LAYER 63
erik AT solusek%                         DOT ..mimir/tape/decompressed
8:28:15am 270 0

  anyhow, you can use the 'space' tools to inspect and make sure you 
dont have broken or malformed gds files.  'dblist' can show you the 
hierarchy, and 'dali' is a GUI gds viewer.  we mainly use magic, but 
i use 'dali' to check my techfiles and do a few DRC's magic cant do.
and best of everything: if youre a school, its free!  (we bought our 
copy, but still: we use these tools every day to deal with wacky gds
files from caden$e.  anyhow, if you still have problems, tell us 
what made the calma, and what techfile you are using.. i can help more
in detail then.  salut :)
 -erik

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