https://www.lomont.org/tags/hacking/ Recent content in Hacking on Lomont.org Hugo en-us Fri, 26 Jul 2024 07:50:18 -0400 https://www.lomont.org/posts/2024/minimaltictactoe/ Fri, 26 Jul 2024 07:50:18 -0400 https://www.lomont.org/posts/2024/minimaltictactoe/ <!--summary--> <p>Derivation of a minimal size tree for playing perfect tic tac toe</p> https://www.lomont.org/posts/2023/ios-png-errors/ Sun, 23 Jul 2023 14:44:11 -0400 https://www.lomont.org/posts/2023/ios-png-errors/ <p>XCode corrupts PNG images for iOS builds. This post details the error.</p> https://www.lomont.org/posts/2020/rtk-gps-project/ Mon, 07 Dec 2020 20:25:57 -0500 https://www.lomont.org/posts/2020/rtk-gps-project/ <p>I built a RTK-GPS gadget and wrote enough software to do basic GNS tasks such as finding distances, decoding GPS NMEA and RTCM messages, finding intersections, and doing boundary detection.</p> https://www.lomont.org/talks/2018/meltdown/ Wed, 10 Jan 2018 12:56:17 -0400 https://www.lomont.org/talks/2018/meltdown/ <p>This talk covers CPU architecture from the early days (Intel 4004) through modern designs (2018, Intel i7 and i9), with a view towards how the Meltdown and Spectre exploits were discovered. It covers virtual memory, process separation, cache issues, RAM details, pipelining and stalls, branch prediction, Moore&rsquo;s law versus physics, and finally how Meltdown and Spectre are the consequence of many of these design decisions.</p> <p>In the end I show the code for Meltdown along with a demo.</p>