Andrew Jeffery @arjeffery.bsky.social · 06/08/2026oldbytes.space/@gloriouscow...oldbytes.spacegloriouscow (@gloriouscow@oldbytes.space)The following is a valid DOS COM executable that prints "HELLO" in the lower right corner of the screen. You can copy these emoji into a text editor, and save it as EMOJI.COM. it should be 141 bytes.... 020
Reposted by Andrew JefferyCode Construct @codeconstruct.com.au · 25/11/2025After adding support for constrained-memory environments to the Deku parser, we've had some interest in using Deku for #rustlang binary parsing. So, Andrew has put together a great Deku walkthrough doc, parsing the ELF format as an example. Read all about it at codeconstruct.com.au/docs/deku-el...codeconstruct.com.auDescribing binary data with Deku - Code ConstructCode Construct documentation 032
Reposted by Andrew JefferyCode Construct @codeconstruct.com.au · 11/11/2025Code Constructionist @arjeffery.bsky.social has recently had contributions to #rust crate Deku merged, which allow implementing safe, reliable, binary-protocol parsing within #embedded microcontroller environments. We have a news post published, at codeconstruct.com.au/news/deku-co...codeconstruct.com.auExpanding Deku - Code ConstructSymmetric serialisation for embedded systems 042
Reposted by Andrew JefferyThe Rust Foundation @rustfoundation.org · 25/09/2025We’re excited to share that @codeconstruct.com.au, Fledgio, and QRT have joined the Rust Foundation as new Silver Members! We also welcome the @torproject.org as our newest Associate Member. Read more about their commitment to a healthy Rust ecosystem: rustfoundation.org/media/rust-f... 0111
Reposted by Andrew Jefferyapenwarr @apenwarr.ca · 27/12/2024Your periodic reminder about the Bluesky network analyzer, a surprisingly useful tool for finding people you know who you probably intended to be following if you knew they were here. It's eerily good, especially if you use "favour niche accounts" mode. bsky-follow-finder.theo.iobsky-follow-finder.theo.ioBluesky Network AnalyzerFind accounts that you don't follow (yet) but are followed by lots of accounts that you do follow. 911137
Andrew Jeffery @arjeffery.bsky.social · 29/08/2023I wish you didn't write "public" there so I could make a Grafana joke 020
Andrew Jeffery @arjeffery.bsky.social · 27/08/2023These did seem to be very good years, at least in comparison to recent times. Also happened to coincide with me joining ozlabs, which turned out to be pretty good for my career too 😄 010
Reposted by Andrew JefferyRed @red64.bsky.social · 25/08/2023I think I've actually done it, completed a project! 1924558
Andrew Jeffery @arjeffery.bsky.social · 24/08/2023This was another silly one involving Python in embedded systems github.com/openbmc/open...github.comImprovements in Mapper Performance · Issue #2860 · openbmc/openbmc 000
Andrew Jeffery @arjeffery.bsky.social · 24/08/2023I think that's probably one of the better performance results I've achieved 100
Andrew Jeffery @arjeffery.bsky.social · 24/08/2023An orange site article involving assembly analysis for performance reminded me of the time I got a 2495x improvement out of tceetree when run against Linux v4.12 medium.com/@andrewrjeff...medium.comOptimising tceetree for the Linux kernelRecently I set about learning the Linux kernel’s pmbus subsystem, and started hand-drawing a call-graph to show myself around. Needless to… 100
Andrew Jeffery @arjeffery.bsky.social · 10/08/2023Well, openbmc/libpldm can finally be built with `-DNDEBUG` and I've set `b_ndebug=if-release` as the default in meson.build. It only took ~100 patches and three tags 🥴 000
Andrew Jeffery @arjeffery.bsky.social · 06/08/2023Guess I should do an intro post: Hi I'm Andrew, I'm an open source software nerd who looks after implementations of some DMTF PMCI specifications and enjoys rage-debugging awful firmware issues. At some point I intend to enjoy playing guitars again. 071
Andrew Jeffery @arjeffery.bsky.social · 06/08/2023[ku]probes and `perf probe` are pretty magic, in addition to tracepoints 011
