tree df020c26cc403dc1511e0b51a4683a0a4e1965f8
parent d2f3e83d67775fdaabcfc77ad7bb240e2669f421
author Tim Edwards <tim@opencircuitdesign.com> 1723425783 -0400
committer Tim Edwards <tim@opencircuitdesign.com> 1723425783 -0400

Modified the GDS read-in section of the magic tech file for
sky130 to remove the area of any actual metal coincident with the
corresponding fill block type from the fill block area.  Otherwise
the fill block will overwrite and obliterate the metal on read-in.
This solves the issue reported on the github issue tracker for
magic (issue 321).  NOTE:  There remains an issue that the
"fillblock" layer in magic does not symmetrically write out and
read back in;  however, this problem is due mostly to the poor
implementation of "fillblock".