10 Nov
2015
10 Nov
'15
4:23 p.m.
On 11/10/15 3:56 PM, Brad Parker wrote:
fyi: from the 6502 faq:
/* How do you turn bitmaps into polygons?/
We draw them in our custom Python app. We spent about two months looking at automatic
vectorization and using the bitmaps to create polygon fragments, but neither of these was
better than just
sitting down and clicking out the polygons. It's almost essential to have our own
vector drawing app, so we can control snapping, do fancy copy-paste, get good vector data,
and greatly speed up the
work.
/* How did automatic vectorization fail?/
It was more work to clean up the results of automatic vectorization than to do clean work
in the first place. Damage, dirt, and ambiguous or falsely detected features in the chip
die shots create
problems. We also rely on finding and modelingburied contacts
<http://www.intel4004.com/buried.htm>like they would appear in the original
fabrication masks, not like they appear in silicon. This is
very difficult, if not impossible, to do automatically.
I'm not surprised by this. So in the end, a human brain figured out where the
polygons are. It might be a fun "internet distributed" project to farm out
sections to lots of people and then assemble
the results...
-brad
you may want to check out
https://siliconpr0n.org/archive/doku.php?id=motorola:68000