Gregory's ServerThe Pentium die has a lot of initials from the designers, in various shapes and sizes. These photos show a subset of the initials. Intel removed the initials from the next revision (80502).
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 @kenshirriff The Bus Interface Logic block seems shockingly large, half the area of either cache. What's going on? @tommythorn In comparison, on the 8086, the Bus Interface Unit is roughly half the chip. The Bus Interface is doing a lot: performing prefetches, handling memory and I/O bus cycles, handling interrupts, bus hold, bus locking, cache operations, and so forth.  @kenshirriff TIL Zaphod Beeblebrox was a chip designer. Explains why he went on to put his initials onto his own brain. |
I made this diagram to show the different functional blocks on the Pentium P5 die.
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