making any subcircuit serializable by using the new command option
"property (device) serial|parallel enable|disable". Note that as
of this commit, serial device detection is enabled but serial
networks are not collapsed for matching, which will tend to lead
to property errors in serial devices until this code is added,
which should be in a day or two.
'ignore class', but removes instances of the specified class whose
pins are shorted together. Currently requires that all pins must
be shorted together.
based on properties that can be traded with number of devices,
such as MOSFET width, by merging. This initial implementation
is somewhat limited, only dealing with properties that merge
by summing. Only devices that do not match at all in the other
circuit will be considered for merging. The feature includes
a command option "property ... merge ..." that allows control
over which devices can and cannot be merged.
variables to iterate over hash table contents. This led to the
inability to nest hash table iterators. Fixed by defining a
wrapper structure that holds the actual hash table plus the size
and iterator indexes. Not only does this solve the nesting
problem, but it also avoids the need to pass the hash table size
on every call, and that reduces the number of ways a hash table
subroutine can go wrong (e.g., cannot access the table out of
bounds simply by passing a size that is larger than was used to
initialize the table).
comparisons between, duplicate cells (cells with the same netlist
that may have more than one name in a circuit, or which for some
reason appear with the same name more than once in a netlist).
Added more checks to the list prematching, which prevents various
troubles with cells having a mismatched hierarchy. Added a
command option to "flatten class" to flatten instances only within
a specific cell. Corrected one error in the pin matching routine.
Added a check in the pin matching routine to look for pins that
have been found to be no-connects after cleaning up the pin lists
of the children of that cell.
Tim Edwards