Info on building Qbus-based PDP-11's that will run Ancient UNIX, including 2.11BSD. I have not done much with the PDP-11's for several years. Some of my PDP-11 information is obsolete, such as descriptions of software for simulating and interfacing PCs to PDP-11, links to other websites, and hardware sources.
Lock Free Data Structures
I have been studying and implementing lock free data structures for bare metal real time systems on running on multi-core ARM processors. These will shortly be open sourced.
PlayMidiCE -- a MIDI player for Windows CE, using a Roland SCP-55 PCMCIA Sound Canvas. This stuff is really old, and there may be broken links, but it may be interesting to someone so I'll leave it up.
A tribute to my father: Roy Engdahl (oops -- dead link).
I did extensive research in 2005-2006 which greatly improved the quality of my family database. From this I prepared a paper for the Engdahl Family Reunion in July 2006 which traces the Engdahl/Phillips side of the family back to early colonial Connecticut around 1650. Here is the current paper on the Engdahl Family Tree, updated July 16, 2006. (3.9 megabytes, in PDF format).
Here is a paper on the Corwin Family Tree. This is a snapshot of a work in progress, but even in its unfinished state it contains a lot of information. This is a large PDF document (3.5 megabytes).
I zipped the PDF files to save space (this website has a 10 meg limit). You will need Acrobat Reader to read the PDF files.
Around 2006 I created the Churchhopper's Guide to the Galaxy -- an index of churches (which actually only covers Geauga County, Ohio). This is a by-product of my research while church-hunting during September and October of 2005.
The end result of our church hunting was our current involvement in Orwell Bible Church, a church planting project in Orwell, Ohio, about 25 minutes east of where we live in Chardon. We meet in an old school building in Windsor, OH, and are currently averaging just over 40 people every Sunday morning.
"The things which are seen are temporary,
Last modified: December 31, 2009