I guess the unused entries spell "bad FC" (for floating constant). Also I think constants 6 through 10 are relevant for the decimal-to-binary conversion or vice versa, as evident from the following observation:<p><pre><code> 0x5c3bd5191b525a249 ~= 2^123 / 10^17
0x470de4df820000000 = 2^13 * 10^16</code></pre>
Fun trivia: for many years Intel documentation was wrong on error bounds in trigonometric functions: <a href="https://randomascii.wordpress.com/2014/10/09/intel-underestimates-error-bounds-by-1-3-quintillion/" rel="nofollow">https://randomascii.wordpress.com/2014/10/09/intel-underesti...</a>
Ken, how has the technology for interconnects changed over the years? Seeing all of these disparate regions in 2D it really interests me on how they are routed.