this allows for bitcells that need to be mirrored on the y axis, like
thin cells. However, the portdata elements also need to be mirrored on
the y axis. Otherwise the router will fail horribly when connecting
bitlines.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
a lot of functions of dummy- and bitcell-array are either copy-pasted or
have just slight differences. Merge all of those into an abstract base
class such that we don't have too much duplicate code.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Convert metalN to mN.
Generalize helper constants in modules for
space, width, enclose, etc.
Use layer stacks whever possible.
Try to remove drc() calls in liu of helper constants.