not to re-process processed tiles made an incorrect assumption,
causing tiles not to be re-processed when the clip area changed,
such that areas would be missed. It is not clear that in its
corrected version, "bloat-all ... [dist]" is any more efficient
than the original implementation of an incremental series of bloat
+ AND. At least the syntax in the tech file is much simplified.
cast as "bool", causing issues with the proper/strict use of
the "bool" type. Changed the version back so that it will
update the github mirror tonight, since the current version
appears to be working.
database corruption discovered recently that was uncovered by a
commit on Jan. 31 and is caused by DBMergeNMTiles0() using a
freed tile (reported in github issue #404).
commands, because the keypad numerical values no longer work
regardless of the setting of Num Lock. The keypad arrow keys
alone implement "move", while Shift + keypad arrow keys
implement "stretch".
keyword in LEF. FOREIGN may take an origin offset, but it is
optional. The routine to check that there were no offset values
in the statement incorrectly checked for a NULL token instead of
a value ";" which would indicate an end-of-statement.
macro. Based on observation of cells in PDKs where ORIGIN and/or
FOREIGN are non-zero, added code that forces a correction of LEF
macro coordinates to match the GDS coordinates, with an
equivalent negative shift of the LEF macro ORIGIN to compensate.
Normally, both ORIGIN and FOREIGN will be zero and the added code
will do nothing. Note that this code does not handle the
additional optional orientation. A LEF macro with a different
coordinate system than its GDS is already weird; a LEF macro
with a different rotation than its GDS is hopefully something
that nobody ever does in practice. If needed, I'll cross that
bridge when I come to it.
manhattan shapes (especially minimum-sized ones) to be eliminated,
as these can survive a shrink-grow operation intended to get rid
of such shapes. This implementation may not be in its final form
but should suffice for now.
instance names in both the selection and in the root edit CellDef,
and then wipes duplicate names from the selection and regenerates
unique IDs. This avoids the unexpected behavior displayed by
magic in which a "copy" function renames the *original* instance
and gives the original name to the copied instance. This is not
only unexpected, but causes an error in which "undo" after
multiple copies fails to remove earlier copies because the name
change was not recorded, and the instance can no longer be found
by name.
interactive wiring into coordinate-based commands. Added new
command extensions for "wire leg", "wire vertical", "wire type",
and "wire horizontal". Modified the command logging such that
"wire show" (which does not modify layout) does not get logged,
which avoids unnecessary logging of mouse movement.
that has since been compressed and given a ".gz" extension.
Removed code that uses a system call to "gunzip" and "gzip" when
the target file is compressed, since the compression is handled
in the code.
"MASK_HINTS" was implemented, it was put into a routine that
scales all coordinate-related properties, including "FIXED_BBOX",
but the original code that scaled only "FIXED_BBOX" was never
removed, resulting in the bounding box getting incorrectly scaled
twice by any grid scaling.
new CIF operator is used in a tech file. Reworked yesterday's
commit to add more related operators, so there are now four new
ones (also renamed them): interacting, noninteracting, overlapping,
and nonoverlapping. "interacting" now means overlapping or touching;
so the four cases allow all variations of adjacency between the two
material types.
regions of a given type and retains only those regions which
interact with (overlap) another given type. Both sets of types
can be either magic database types or CIF temp layers. This will
allow the implementation of rules that were not previously
possible.
connection to a net that has been decomposed into a resistor array
cannot be found. This indicates some fundamental error in the way
extresist works. However, it should not be producing an invalid
and unsimulatable netlist. Instead, it makes an arbitrary connection
from the device terminal to the resistor array and adds an entry in
the output netlist (.res.ext file). This results in a poor
representation of the resistor network to that terminal, but an
otherwise simulatable netlist. A warning is issued to note that an
arbitrary connection has been made. This is most typically a
"garbage in, garbage out" situation in which insufficient information
exists in a layout to inform magic on which direction current is
traveling through a net. However, it should be possible to rewrite
the extresist code so that magic makes somewhat informed decisions
about current paths and produces a halfway decent representation of
the actual net, instead of just giving up on the detailed extraction.
generate a name for an instance that is set to NULL. It is not
clear to me by an instance would have a NULL name, but apparently
it can happen, and should not crash magic.
the former code attempted to determine the precision and generate
an output without unnecessary trailing zeros. Unfortunately there
were counterexamples that fail to be formatted correctly, as found
by Mark Martin, and which generate output that has roundoff error.
Reimplemented the method using code found on StackOverflow, which
appears to solve the problem more robustly.
"bloat-all" which is "bloat-all types1 types2 distance" where the
"distance" value is a maximum amount to grow. It is not (that I
know of) particularly useful for generating output GDS, but it is
very useful for generating temporary layers for DRC checks,
especially things like determining tap distance for latch-up
rules. The alternative (used in the sky130 tech file) is a
tedious step-by-step "grow" followed by "and-not". This rule
option is much cleaner to implement and computes faster (although
it is still a boolean operator and is much slower than an edge
rule).
identifies areas which meet the proper definition of run-length
(both edges are parallel for the run-length distance or more).
Previously, errors were getting triggered for geometry where
only one edge exceeded the run-length distance.
which has the same meaning as the "maxwidth" function ("both"
checks either tile dimension to see if it exceeds the maximum).
This is a simple per-tile check and assumes that violations do
not occur across multiple tiles. This should be sufficient for
most checks.
different from the device (i.e., gate) width, for devices that do
not define a MOS-like gate spanning the width of the device. This
is restricted to the assumption that the terminal is rectangular
and therefore a simple width and length can be derived from the
area and perimeter. Also, length is defined as the smaller
dimension and width as the larger dimension. For additional
restrictions, see the updated documentation. This was added to
allow correct width and length extraction of a bipolar emitter
window, but may be more generally useful.
at a 45 degree angle will shadow the DRC rule for the material
drawn orthogonally (that is, the DRC rule for the distance between
orthogonal shapes will be eliminated from the rule deck).
generated cell is modified multiple times. If the original cell
is orphaned (no longer used anywhere in the design), it is deleted.
However, an instance of the cell may exist in the secondary
select buffer if the cell was previously moved or copied, and
an attempt to do another move or copy will clear the secondary
select buffer, encounter the deleted cell, and crash the program.
previously ignoring the parameters of the entire cell including
the device being overridden by the property, causing the output
to be wrong. The parameters should always be written out to the
.ext file, including the device whose output is being overridden.
mismatch in the SkyWater sky130_fd_io__top_pwrdetv2 circuit
because a resistor with ends shorted together was being assigned
an incorrect length and width. This was due to the similarity
in characteristics of the boundary vector between a shorted
resistor and an annular resistor. The terminals need to be
checked for shorted ends to disambiguate the two cases.
with zero gate error (and was reporting an infinite antenna ratio).
For now, just ignoring the zero-area case. However, since the
procedure is supposed to be looping through nets connected to
specific devices in the .ext file, then every entry is supposed to
have non-zero area, so there is some underlying problem here that
needs to be fixed.
surrounding a device tile may cause the device to be extracted
with the wrong node (picking up the node from the wrong side of
the diagonal tile). Added extra handling to capture the case
where two ports on two different nets are merged when using
"ext2spice short" (previously it was handling only ports on the
same net). Also: Removed the redundant readline-4.3 from the
readline/ directory; only readline/readline is left, which is
version 4.3.
"extract unique notopports" both fail to work correctly because
an attempt some time ago to avoid issuing warnings about shorted
port names when using those options was changed in the wrong
line.
angled edges. This is a rare case and so has never come up before,
but can happen especially on transistors with gate or diffusion
with 45 degree chamfers or flanges. Thanks to Mark Martin for
providing the use case.
request #325 from Daryl Miles. Made a few simple style changes
to conform to (what is vaguely defined as) the overall programming
style for magic (passed down from John Ousterhout).
which prevents the "Ctrl-P" key from raising the .params window;
the underlying error is that the original error in the "property"
command was a disagreement about where "argstart" is placed. The
command was fixed to make the "property" command work correctly.
However, the solution made "argstart" wrong when using the command
"cellname property". Now both uses are handled correctly.
added fairly recently when getting rid of crashes related to
commands operating on non-edit cells. The lack of a cast was
prevening compilation on systems with more rigorous error
checking.
Previously, a file path beginning with "/", "./", or "../" would be
searched for verbatim and no searching would be done over paths.
This behavior now occurs for a leading "/" only. File paths with
"./" or "../" will search for the file with the path verbatim, then
proceed to search for the file with each search path prepended to
the filename as usual. This solves a problem for reusable, non- PDK
IP blocks, where the IP block may have an abstract view pointing to
a GDS file which is specified as being located at "../gds/<file>".
This file would not be found if the IP block was included into
another project. Now it can be done if the path to the IP is given
by "addpath".
unique" on a flattened layout (some labels end up NULL and the
NULL condition needs to be checked). Also remembered to update
VERSION, which was missed on the last commit.
the same: (1) If the inodes of the filename are the same, then the
cells are the same. This avoids treating symbolic links as
different paths with different files; (2) If both layouts are in
git repositories and the git repository commit hashes are the same,
then the cells are considered to be the same. This allows projects
to be cloned into other projects as dependencies and used in
multiple places without magic treating them as different layouts.
R. Timothy Edwards