Category Archives: Xbox 360

Reflections on My Tech Career – Part 2

Posted on November 10, 2025 by brucedawson

This is second and final part of the story of how my career as a software developer unfolded (part 1 is here). In this half I work at four different companies in the Seattle area, make my mark, and then … Continue reading →

Posted in Bugs, Chromium, Floating Point, Investigative Reporting, Linux, Performance, Programming, Quadratic, Symbols, uiforetw, Unicycling, Xbox 360, xperf | Tagged , , , , , | 18 Comments

11 mm in 1.25 nanoseconds

Posted on January 12, 2022 by brucedawson

In 2004 I was working for Microsoft in the Xbox group, and a new console was being created. I got a copy of the detailed descriptions of the Xbox 360 CPU and I read it through multiple times and suddenly … Continue reading →

Posted in Fun, Performance, Xbox 360 | Tagged , , | 14 Comments

Finding a CPU Design Bug in the Xbox 360

Posted on January 7, 2018 by brucedawson

The recent reveal of Meltdown and Spectre reminded me of the time I found a related design bug in the Xbox 360 CPU – a newly added instruction whose mere existence was dangerous. Back in 2005 I was the Xbox … Continue reading →

Posted in Debugging, Xbox 360 | Tagged , , , , | 49 Comments