"csubcircuit" but swaps the first two pins (with the device
identifier layer becoming the 2nd pin and the other terminal the
first), which is needed for n-type diodes modeled as subcircuits
where the subcircuit pin order matches the order of pins for a
SPICE n-type diode component. Previously "msubcircuit" was used
for this purpose, but will calculate the wrong L and W. While
use of L and W for diodes is rare, this device type also works for
reversed capacitors (where the bottom or non-identifying layer
terminal is in the first pin position of the subcircuit).
terminal resistance, for cases where the resistor value is
estimated and output along with (or instead of) the physical
length and width or area and perimeter. Corrected the "area"
and "perimeter" type handling so that they combine in parallel,
not in series (note that "perimeter" resistance is just an area
resistance with the depth of the material factored in).
for a resistor or capacitor is optional but is valid SPICE and not
just limited to CDL format, so it is now allowed to add "r=" at
the end of a resistor or capacitor component (not subcircuit) to
generate the optional component value.
as-is, without a parameter name and before any device model name or
substrate pin, according to CDL syntax, if the parameter has been
specified without a parameter name (e.g., "r=" instead of "r=r").
Corrected an error in the extract code which put the substrate node
name in front of parameters instead of after. This was previously
unexercised because only in CDL format does a resistor or capacitor
model have parameters listed by name.
specified without a list of substrate connection types, but
the "s=" parameter is used, resulting in an attempt to access a
substrate node that does not exist.
section of the tech file, which can be used to alter the layer
connectivity tables from the default. This can be used, for
example, to disconnect substrate and well from taps, to
generate a netlist that checks for soft-connect errors.
Removes ubuntu-20.04 config (no longer available on GitHub CI)
added clang-19 and gcc-13
removed no_gc_gu, as all 'gl' (GL) options require 'gu' (GLU)
added build for --enable-readline-bundled
added X11+Cairo
The compiler has started to error on casting int* to fd_set*
Since WASM build has presense of fd_set then the ifdef have been
switched away from the legacy (pre 2000) method.
We make a copy of readonly string on function entry and use that instead.
strrchr() is a bit of an annoying API, takes const char* but returns char*
but it is the same string. One for static analysis or C++.
SimSelectArea() argument unused.
1) Corrected spurious error messages about cells already existing
in GDS when using "flatten" or "flatglob".
2) Fixed handling of resistance as a subcircuit parameter
3) Added area and perimeter resistance for a device; this is done
through the "devresist" statement in the tech file, which is an
extension of the original "fetresist" statement. Where "fetresist"
only supported type "linear", "devresist" supports types "area"
and "perimeter".
4) Support for CDL syntax, including generating subcircuit-like
parameters for components starting with SPICE-standard prefixes
like M, R, C, etc., adding "/" between pins and subcircuit name,
and saving the file as ".cdl" instead of ".spice".
5) Estimated L and W for devices whose geometry is complex and do not
reduce to a simple rectangle. L and W are estimated as the square
root of the area.
6) Changed the method of extracting L and W for diodes to use the same
method as capacitors. Note that diodes are not usually specified
by L and W, but if they are, this will produce the right result.
7) Corrected the reported filename and line number when printing error
messages related to errors inside a technology file, when the
technology file uses "include" to combine multiple files.
since this is a common artifact of foundry cells and almost
always incompatible with magic. Modified the "port" command to
allow "port make <index>" on a label where other labels of the
same text already have the same index. Removed deprecated
documentation and added some missing documentation, such as an
explanation of the "ext2spice subcircuit auto" option.
doing "save", which was missing checks on properties representing
coordinates (e.g., FIXED_BBOX) resulting in those values
potentially getting truncated by scaling the output to an
incompatible common factor. Thanks to Sylvain Munaut for finding
the issue!
prefix when doing a reentrant load, causing include files to not
be found. Fixed a divide-by-zero issue that occurs when some
tech file sections are not loaded to the abovementioned error.
R. Timothy Edwards
Darryl L. Miles