Instruction decoding in the Intel 8087 floating-point chip(righto.com)

52 points by pwg 8 months ago | 14 comments

Microcode inside the Intel 8087 floating-point chip: register exchange(righto.com)

113 points by pwg 4 months ago | 19 comments

Conditions in the Intel 8087 floating-point chip's microcode(righto.com)

105 points by diogotozzi 9 months ago | 34 comments

The stack circuitry of the Intel 8087 floating point chip, reverse-engineered(righto.com)

130 points by elpocko 10 months ago | 56 comments

Microcode in Intel's 8087 floating-point chip: the scale instruction(righto.com)

114 points by pwg 1 month ago | 37 comments

The adder at the heart of Intel's 8087 floating-point chip(righto.com)

118 points by pwg 4 months ago | 28 comments

Reverse-engineering the Intel 8087's tangent algorithm: more than CORDIC(righto.com)

98 points by pwg 29 days ago | 11 comments

Ken Shirriff's blog post reverse-engineering the Intel 8087 coprocessor's FPTAN tangent instruction, which combines CORDIC with polynomial approximation.

Intel's $475M error: the silicon behind the Pentium division bug(righto.com)

362 points by gslin 1 year ago | 110 comments

Ken Shirriff's blog post examining the Pentium die to show where the 1994 floating-point division bug lies in the silicon and why it occurred.

The Lost Atomic Update on Loongson CPU(jia.je)

120 points by jiegec 1 month ago | 6 comments

A blog post investigating a hardware erratum on the Loongson LA664 CPU where an atomic instruction loses updates, causing an infinite loop while packaging normaliz for Debian.

Intel's Humbling(stratechery.com)

501 points by jseliger 2 years ago | 354 comments

Stratechery essay by Ben Thompson analyzing Intel's struggles, its leadership history, and its foundry strategy.

Intel to Receive $8.5B in Grants to Build Chip Plants(nytimes.com)

325 points by ece20 2 years ago | 578 comments

New York Times article reporting Intel will receive $8.5 billion in CHIPS Act grants to build semiconductor plants, announced by President Biden in Arizona.

Adding Floating-Point Decimals for Fun and Profit(blog.vero.site)

52 points by ibobev 27 days ago | 30 comments

A blog post exploring when adding decimal numbers as IEEE double-precision floats produces rounding errors and when the results come out exact.