Published 22Dec2016. More like a scratchpad, updated 15July2019 This page is in group Technology. If you want to follow me to try to find out why queueing of entry calls in Ada causes nondeterminstic (scheduling? timing? deadline?) and try to understand why the scheduling of processes on the defunct transputer is the opposite(?), then jump […]

New: 03Novs2016. Last updated 25Aug2021 (08Jan2025 new References list type) This page is in group Technology. This note started with an attempt to look at how channels are modelled (in code, really) but then ended up with trying to systemise what I found. The note was even called Channel structures at the start. Fold handling with Collapse-O-Matic plugin […]

Started 15Sept2017, updated 15Mar2025 (xcore-200 Evaluation Kit photos, Efficient Computer Corp., xCORE-200 soon EOL, xcore.ai evaluation kit (was Explorer board) This note is in group Technology, (plus perhaps My Beep-BRRR pages and My XMOS pages) and is a blog note where I will try to lay out the reasons why I have ended up with some single-board microcontroller (not […]

Started 7April2017, updated 16Jan2025 (New layout of the Refrences list. All www.xcore.ai replaced with www.xcore.com. XCore Exchange bullet 2. Replicated select case) This page is in group Technology (plus My XMOS pages) and is a blog note trying to scribble down some info about the XMOS xC language that I haven’t found elsewhere. I love it. But, alas, xC […]

I try to study the IncludeOS with respect to mult-threadedness or even concurrency

Started 25Aug2015, edited 21Aug2016 This page is in group Technology and is about a facet of multi-threaded concurrent programming where some seem to think that synchronous non-buffered channels and processes are incompatible with hard real-time systems and guaranteed deadlines. Over a beer the other night, but oh so serious, I heard a computer scientist challenge C. Liu and J. Layland’s […]

Excerpt: I hope it to be a note showing whether it’s possible to code the animated tree in concurrent JavaScript code. Or rather, which solution to choose – or which that suits best. «JavaScript is the most commonly used programming language on earth. Even Back-End developers are more likely to use it than any other language» – stackoverflow Developer Survey Results 2016. In other words: most of the world’s programmers are deprived of concurrency support in their programming language.

Started at Caffè Nero at Blackwell’s in Oxford on 24Aug2014, updated 17Sept2014. 22Oct2023: typos fixed. This page is in group Technology . (Update Oct2023: Observe that this note was written before I got acquainted with the XMOS xCore architecture and the xC language. TODO: I might one day make an addition for this.) Atomic is a […]

Started 29Oct2014, updated 1Sept2015 (then a small chapter on XMOS 12Nov2021) This page is in group Technology and is about a facet of multi-threaded concurrent programming where it’s an important matter that more or less independent sw-processes shall not make running difficult for the others. Intro During my previous blog notes, especially «Not so blocking after all» I […]

Started 18Feb2015, updated 27Oct2021 (MIPI) – Plus a short update 31May2023 («NumPages» for .xe file for 14.4.1) This page is in group Technology (plus My XMOS pages) and is a blog note about my experience with the XMOS toolset xTIMEcomposer and XMOS HW and how I am going to use used the startKIT to control a small 40 litre […]