Gregory's ServerMy favorite part of the layout is in the corner where the bus lines turn from vertical to horizontal with a diagonal transition. That left a gap in the corner, so they kind of threw the clock buffer circuits into the unused space.
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[DATA EXPUNGED]
 @rotopenguin Those are test dies to check the characteristics of the wafer. They need to be spread out across the wafer to get accurate measurements. Pushing them to the edges would defeat the purpose.  @kenshirriff Do you have any idea what the five very different chips are - the top, bottom, left, right and centre ones? I guess some kind of test chip? |
Thanks to Tom Lyon for providing the wafer. With a big die and a small 4" wafer, each wafer only held a few chips, especially when many of the ones around the edge were truncated.