More Bioinformatics

In general, I install QEMU on my Macbook using MacPorts.  However I recently had a need to get the tip of the QEMU development tree. Getting the QEMU source tree is trivial: git clone git://git.qemu-project.org/qemu.git I needed an updated version of dtc: git submodule update –init dtc The build instructions from the README are: mkdir…

Unix version 0 was written in 1963 by Ken Thompson, on a PDP-7.  Recently, the source code code Unix V0 has been discovered, and you can read it here, as pdf scans of printouts.  You can read about the discovery, and the effort to boot Unix V0 on a real PDP-7 here.  The project home…

I’ve recently become interested in how the i386 boot loader works.  There is an excellent example of a boot loader here, and another here.  Some simple protected-mode code which implements a kernel capable of writing a line of text, is here.  FemtoOS, is the culmination of combining code from all those, and building a simple…

I’ve been reading lots of interesting information about iTunes and IOS, so I thought I would investigate, just what is in an iTunes backup.  Typically, on OS X, you can find your iTunes backup here, under the appropriate OS X user profile: /Library/Application Support/MobileSync/Backup When you look at the backup, it’s a giant list of…

Home automation is coming into the mainstream a with recent offerings from the big tech companies, and I’m interested in it too. I’ve had a number of home automation controllers, most recently an H3 Pro SEL from HomeSeer. I’ve also become quite interested recently in DevOps monitoring, using InfluxDB, and Grafana.  Sensu, Telegraf and Prometheus…