More Bioinformatics

Recently I had reason to get interested in process modelling.  Ultimately I ended up writing an Antlr4 grammar for Modelica (here), but in the mean time I came up with SML (Simple Modeling Language).  The Antlr4 grammar is sml.g4. The characteristics I wanted in my own modeling languages were: Ability to define models as text files…

Back in the dark ages (the 1980’s), people like myself coded on Apple][ computers.  If you were good you coded in Applesoft BASIC or Integer BASIC. If you were really geeky you coded in Assembly language on the 6502 processor.  The Apple][ OS was coded in assembly language, so if you really wanted to understand what…

I’ve been interested in OS development for a while, and now have a prototypical ARM OS on my private source tree.  For that I used gcc-arm-embedded, which worked quite well.  However, as time went on, i became interested in building my own tool chains.  I started with this list of requirements An up-to-date C/C++ compiler,…

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…

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…

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…