29 lines
1.4 KiB
Markdown
29 lines
1.4 KiB
Markdown
# 2023-10-14 — Dev notes
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https://en.wikipedia.org/wiki/Tape-out
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Comment by "Stratoscope" on ["Examining the silicon dies of the Intel 386 processor"](https://news.ycombinator.com/item?id=37886065):
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> Great article as always! One nit:
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> > ..."tapeout", when the chip data is sent on magnetic tape to the mask fabrication company.
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> That's roughly true in a temporal sense, but it's not where the term "tapeout" comes from. They could have shipped the data on a Winchester disk, and the event would still be called tapeout.
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> In the earlier days of printed circuit board (PCB) manufacturing, you would literally "tape out" your circuit manually with black tape on a white board, typically in an enlarged form.
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> "Tapeout" came to mean the point in time when you finished taping out your circuit and it was ready to be sent to be photographed and reduced and boards manufactured from the layout.
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> There wasn't even any "data" involved here, magnetic or otherwise. Just a physical art board with tape on it.
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> Wikipedia has a pretty good article on this:
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> https://en.wikipedia.org/wiki/Tape-out
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> And for the young'uns who are wondering "what the heck is a Winchester disk?"
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> https://www.pcmag.com/encyclopedia/term/winchester-disk
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> I taped out my first printed circuit board as a third-grader sometime around 1960 and shared the story here:
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> https://news.ycombinator.com/item?id=32116169 |