3 stories tagged microcode, newest first.
102 points by pwg | 33 comments
Ken Shirriff blog post examining the Intel 8087 coprocessor's microcode and circuitry for floating-point addition and subtraction, including special cases.
98 points by pwg | 11 comments
Ken Shirriff's blog post reverse-engineering the Intel 8087 coprocessor's FPTAN tangent instruction, which combines CORDIC with polynomial approximation.
557 points by abhi9u | 168 comments
Tavis Ormandy's write-up of Reptar, an Intel CPU bug where redundant instruction prefixes put processors into a glitch state, covering its discovery and fix.