furrtek
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All Konami 007121 cells mapped
🕑 Added 2020-09-10 16:09:58 +0000 UTCIt's almost all in the title: the 007121 cell map was completed a few days ago. The total count is 2347 cells, using up approx 88% of the available space on the die.
The stats show that the top-3 most used kinds of cells are:
-D Flip flop with reset: 401
-D latch: 296
-3-input NOR: 289
Tracing was started, seen as colored lines on the image. Most of the 3NOR cell population seems to be used for the layer priority logic (blue cloud on the image).
Things will become exciting once I get to the address decoding for the multiple configuration registers, as those have several bits with unknown functions.
