read". While "lef read" normally annotates existing layout, this
option ensures that no additional cells are created from macros in
the input LEF file. (2) Added a check on the "Input off lambda grid"
warning during CIF/GDS input such that it is not repeated once issued,
as it tends to be output many times when it occurs.
are considered an exception to the "-toplayer" restriction; this is
because masterslice well/substrate layers will affect the electrical
connectivity between port and sustrate or well.
command when annotating an existing layout from a LEF database, if
there is a port in the layout that is shadowed by a label with the
same name that is not a port.
that produces a result that looks like "lef write -hide" in the middle
but "lef write" around the edge. Can be useful for catching all the
detail around the edges but obscuring/simplifying the bulk of the cell
interior.
at the end of a macro output, even if it is not part of a library.
According to some commercial tools, this is what is expected, even
though the use of "END LIBRARY" is never explained in the LEF/DEF
spec.
for geometry on MASTERSLICE layers (which was inadvertantly broken),
and (2) Added option "lef write -toplayer", which outputs pin geometry
only for the topmost layer belonging to a pin, with connected layers
underneath being designated as obstructions.
caused by the new bloat-all with templayers, which used the distance
record in the bloat structure differently than the other bloat
functions, and therefore was messing up the enumeration of layers
needing to be handled by the hierarchical output. This was probably
also wrong for the existing bloat-all function, which might explain
some problems recently with the GDS output.
"lef write", which had one typo in the formatting, plus was using
a static string method for generating the formatted output that was
implementation-dependent on fprintf(). These have been fixed.
minimum manufacturing grid (normally 1000 but can be altered by the
"angstroms" flag in the cifoutput section, and by "gridlimit").
The output values then are truncated such that the floating-point
output value, when multiplied by the UNITS value, is always an
integer. e.g., "gridlimit 5" will change UNITS to 200, and values
will be minimum precision 0.005, or 5 nanometers.
probably needs revisiting, because "lef write" and "lef writeall"
need handling to generate the PROPERTYDEFINITIONS block for the
PROPERTY entries to be correct.
layers (apart from the fact that contacts are output as magic's
contact layer representation, and not as cuts; this still needs to
be handled properly).
I missed the LAYER value and the geometry was one level to high.
Previous;
```
PORT
LAYER li1 ;
RECT 1.145000 1.075000 1.690000 1.275000 ;
RECT 3.720000 1.075000 4.490000 1.275000 ;
LAYER met1 ;
RECT 1.105000 1.260000 1.395000 1.305000 ;
RECT 3.765000 1.260000 4.055000 1.305000 ;
```
After;
```
PORT
LAYER li1 ;
RECT 1.145000 1.075000 1.690000 1.275000 ;
RECT 3.720000 1.075000 4.490000 1.275000 ;
LAYER met1 ;
RECT 1.105000 1.260000 1.395000 1.305000 ;
RECT 3.765000 1.260000 4.055000 1.305000 ;
```
areas and writes ANTENNAGATEAREA and ANTENNADIFFAREA values.
(2) Determines "USE POWER" or "USE GROUND" from label names
matching Tcl variables $VDD and $GND, if the USE has not been
registered as a cell property (knowning the use allows magic
to avoid writing an ANTENNADIFFAREA for power rails, although
doing so should not be an issue).
Tim Edwards
Tim 'mithro' Ansell