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Rich Wareham
Lives in Cambridge, UK
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Rich Wareham

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When I was a kid, this was the equivalent of YouTube video buffering.
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Rich Wareham

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An interesting graph taken from [1], Google's research on what different strategies experts and non-experts take to stay secure online. Biggest difference: experts use unique passwords and password managers, non-experts rely on anti-virus software.

[1] http://googleonlinesecurity.blogspot.co.uk/2015/07/new-research-comparing-how-security.html
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Alex Holloway's profile photoRichard Kettlewell's profile photoChristian Richardt's profile photo
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Followup question: is there any difference between how the two communities interpret "strong password"?
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Rich Wareham

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Tonight Búri, my homebrew 6502 computer, screamed its first words from BASIC from the VGA interface I'm making for it. Not perfect still and the signal is suspiciously noisy but I'm pretty proud of myself considering I only took up electronics at the start of this year and, six months later, I've nearly got my own self-designed 80s computer. :)
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Rich Wareham

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Wow...
 
I guess HyperV doesn't like systemd... ;-)

It's amazing what stuff gets merged into the Linux kernel these days...
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Daniel Silverstone (Kinnison)'s profile photoRichard Kettlewell's profile photo
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Boggle. 
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Rich Wareham

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Bookmarking for later: an application note on various tricks to delay bits of logic pulses.
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Rich Wareham

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A fascinating pair of videos on magnetic core logic. The clarity of presentation in these old US Army videos is always excellent.
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Rich Wareham

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Something to show people next time they attribute to malice a compter problem caused by error. "Guardian sub-editor makes small typo and accidentally loses all his income. " (Via +Kerry Buckley on Twitter.)
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Or it's a language in which '=' means equality test
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Rich Wareham

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I'm experimenting with using Duck Duck Go as my default search provider. I must've switched to Google around 15 years ago(!) It's probably time to explore what's happened outside of the bubble since then :).
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Alan Pope's profile photoStewart Forshaw's profile photoRich Wareham's profile photo
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Interesting. So far it's doing well for documentation searching. (Most of my work-time search activity is this.) I've not decided if I'll switch at home.
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Rich Wareham

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I'm  happy bunny. There's actual technology on the BBC Technology site :). Joking aside, this is actually a highly worthwhile article by the BBC. It shows how much its site doesn't play well with code excerpts though :).
BBC Click's Kate Russell gives a step-by-step guide to setting up your own virtual private network using a Raspberry Pi.
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Rich Wareham

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Some gory details on how the BBC's #microbit will actually get programmed by the programmer. tl;dr: Web-app compiles program to C++, web service compiles C++ to mbed binary, mbed binary manually(!) copied to USB mounted drive.

Remember when computers used to ship with a programming environment out of the box? Now just installing the programming environment is so complex that, in 2015, we hide it behind a cloud service.

Also the site contains the following: "The student is prompted to save the ARM binary program to a file, which she then simply drags to the micro:bit mounted drive, which flashes the micro:bit device [4] with the new program." Apparently, Microsoft don't think men will be able to program it(!)

[For the irony impaired: of course I understand the good intentions behind trying to claim "she" as the "indefinite programmer" pronoun but understanding the use doesn't stop it annoying me any less.]
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Sort of. According to https://developer.mbed.org/blog/entry/bbc-microbit-mbed-hdk/, the microbit itself is a fairly vanilla mbed device and so the toolchain for mbed programming (ARM GCC + serial) should probably work. One can probably re-flash the firmware to be vanilla mbed + microbit runtime.
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Rich Wareham

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After being fed up with all the prototyping boards available cheap from eBay being "not quite right" for my needs, I decided to get my own done. £2/board for 10 boards which isn't too awful when compared to similar size/quality boards on eBay. See https://github.com/rjw57/protoboard-pcb if you want the layout files and a feature list.
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Rich Wareham

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Spent far too long last night trying to work out why my 6502 computer had no output with the new interrupt-driven OS. Discovered that it's nothing to do with the 6551: the new W65C22 chip basically says "screw you" to the 6502 bus signalling... :( From datasheet: "The IRQB output is a full output driver that outputs both Logic 1 and Logic 0 levels. The older NMOS and CMOS IRQB output was open drain pull down only, thus allowing the IRQB signal to be wire 0Red to a common microprocessor IRQB input line. The W65C22S IRQB cannot be wire ORed."
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Cambridge, UK
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http://richwareham.com/
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Technology lover and armchair linguist. 'Armchair', of course, being an archaic word meaning 'uneducated, naive and wrong'.
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I continue to live and have not yet bred.
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Affordable. Silly. Decent. Reasonably priced beer, cheesy music and a good place for a post dinner drink and chat.
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