Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Inside the Apollo "8-Ball" FDAI (Flight Director / Attitude Indicator)
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During the Apollo flights to the Moon, the astronauts observed the spacecraft's orientation on a special instrument called the FDAI (Fli...
Reverse engineering the 386 processor's prefetch queue circuitry
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In 1985, Intel introduced the groundbreaking 386 processor, the first 32-bit processor in the x86 architecture. To improve performance, the ...
The absurdly complicated circuitry for the 386 processor's registers
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The groundbreaking Intel 386 processor (1985) was the first 32-bit processor in the x86 architecture. Like most processors, the 386 contains...
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