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by Chris.Rowland
Sun Apr 15, 2012 9:50 pm
Forum: Beginners
Topic: What version of Linux is it?
Replies: 25
Views: 4722

Re: What version of Linux is it?

<t>So, as an admin you think that being smug, patronising and unhelpful is a good thing. This is not a good example.<br/> <br/> Linux needs to move into the 21st century and pay some attention to application design and usability and not dump this onto the user.  There's nothing clever about writing ...
by Chris.Rowland
Sun Apr 15, 2012 9:24 pm
Forum: Other projects
Topic: Using Laptop as keyboard and mouse
Replies: 22
Views: 20491

Re: Using Laptop as keyboard and mouse

Doesn't Synergy provide a way to share a mouse and keyboard between several systems?

It seems to be in the armel Debian distribution so may need nothing more than installing and configuring.
by Chris.Rowland
Sun Apr 15, 2012 9:00 pm
Forum: Beginners
Topic: STICKY: Getting Started with the Raspberry Pi
Replies: 313
Views: 1235238

Re: How to start using your Raspberry Pi

<t>Does Win32DiskImager really only work once?<br/> <br/> I"ve just tried it with a SD card that"s already been written and it appears to write correctly a second (and third) time.<br/> <br/> But I don"t have hardware to test on and maybe it"s fooling me.<br/> <br/> This is W7 64 and a 4G SD card pl...
by Chris.Rowland
Sun Apr 15, 2012 8:16 pm
Forum: Beginners
Topic: What version of Linux is it?
Replies: 25
Views: 4722

Re: What version of Linux is it?

One of the nastiest things about Linux is the smug Linux adherents patronising everyone else.
by Chris.Rowland
Sat Apr 14, 2012 10:54 am
Forum: General programming discussion
Topic: Educational Programming Language
Replies: 73
Views: 20497

Re: Educational Programming Language

<r><br/> John Beetem said: But the real power of C comes from idioms like:<br/> <br/> while (*s++ = *t++) /*nop*/;<br/> <br/> <br/> I'd forgotten about pointers in C <br/> <br/> I would avoid that sort of pattern in real world applications because it's barely maintainable. It assumes a really experi...
by Chris.Rowland
Fri Apr 13, 2012 9:45 am
Forum: General programming discussion
Topic: Educational Programming Language
Replies: 73
Views: 20497

Re: Educational Programming Language

<t>What features of a language that makes it good for writing real-world applications would make it bad for educational purposes?<br/> <br/> For application development I'm looking for things that make it easy for me to express the code structure clearly and obviously.  This apply to an educational ...
by Chris.Rowland
Fri Apr 13, 2012 7:40 am
Forum: Off topic discussion
Topic: Help name my brother's new kittens (kitten picture inside!)
Replies: 38
Views: 6172

Re: Help name my brother's new kittens (kitten picture inside!)

Naming kittens is difficult, we have taken weeks before finding something that suited them.

Some are easy, Kronfeld was.  What else can you call a lost kitten found in the fuselage of a Kronfeld Drone  powered glider?
by Chris.Rowland
Thu Apr 12, 2012 12:32 pm
Forum: Other projects
Topic: Gambas
Replies: 86
Views: 21180

Re: Gambas

<t>I"d like Visual Studio   I don"t mind if it"s using VB or C# <br/> <br/> Essentially a modern GUID design framework that can do thing like drag and drop components onto a form, then get to the underlying event handlers to write the code I need to but keeping the boilerplate GUI control code hidde...
by Chris.Rowland
Thu Apr 12, 2012 9:19 am
Forum: Other projects
Topic: Gambas
Replies: 86
Views: 21180

Re: Gambas

<t>I downloaded Gambas2 from the Debian Squeeze distribution using Synaptics a couple of days ago.  This is using QEMU.<br/> <br/> It didn't work.  From the GUI nothing appearde to happen.  From a terminal I got the message "segmentation fault" and it closed. It was nearly midnight so I gave up.<br/...
by Chris.Rowland
Thu Apr 12, 2012 9:03 am
Forum: General discussion
Topic: Model A's
Replies: 47
Views: 8638

Re: Model A's

nmcc said:


That space in the bottom right corner, could we solder a VGA connector on


That's for the mounting holes
by Chris.Rowland
Wed Apr 11, 2012 3:44 pm
Forum: General discussion
Topic: self downloading an sd-card image from a server and writing it to new card
Replies: 20
Views: 3861

Re: self downloading an sd-card image from a server and writing it to new card

<t>It seems to me that there are a number of problems of the "Write to a new SD card" type and only some can easily be solved by having a tiny core that allows the SD card to be removed.<br/> <br/> The use case I'm thinking of is cloning or backing up an existing SD card image to a new one. This nee...
by Chris.Rowland
Tue Apr 10, 2012 9:29 am
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 335655

Re: Debian Hard Float (armhf) for RPi

I'm also happy to contribute to a build process but don't understand how this is OK but the distributed build process I suggested in post 60 isn't.
by Chris.Rowland
Mon Apr 09, 2012 9:16 pm
Forum: Python
Topic: Python for learners, friendly IDE and API needed
Replies: 36
Views: 9457

Re: Python for learners, friendly IDE and API needed

<t>I'm reporting what I saw with Python 2.7 on Windows.  I used the Help supplied with the installation. It seems strange to me that this doesn't give sensible help and I should go elsewhere.<br/> <br/> I'm also approaching this from the POV of an experienced developer trying to convert. Is there no...
by Chris.Rowland
Mon Apr 09, 2012 4:24 pm
Forum: General discussion
Topic: lxde and shellscript
Replies: 1
Views: 724

Re: lxde and shellscript

This has been covered on the forum, search for xorg.conf and you should be able to get the information you need.
by Chris.Rowland
Mon Apr 09, 2012 1:28 pm
Forum: Python
Topic: Python for learners, friendly IDE and API needed
Replies: 36
Views: 9457

Re: Python for learners, friendly IDE and API needed

<t>How on earth is a newcomer supposed to know that creating a sub folder and adding an empty file with a magic name will make other modules in that folder accessible to python?  I also didn't know that you needed to use a full stop instead of the usual folder separator.<br/> <br/> It's nice of peop...
by Chris.Rowland
Mon Apr 09, 2012 10:39 am
Forum: Off topic discussion
Topic: Intel 8086 CPU
Replies: 35
Views: 11225

Re: Intel 8086 CPU

<t>We used 2 8 bit EPROMS like this, for access to a 16 bit bus.  I've a vague memory of writing a BIOS for a Data General Nova clone in the mid 80s.<br/> <br/> The linker generated two hex file outputs for each EPROM, all you had to do was ensure that you didn't get them confused.  BTW erasing was ...
by Chris.Rowland
Mon Apr 09, 2012 10:24 am
Forum: Python
Topic: Python for learners, friendly IDE and API needed
Replies: 36
Views: 9457

Re: Python for learners, friendly IDE and API needed

<t>I think Zo has a point.<br/> <br/> Python is very easy while you are just messing around with the interpreter but it seems to me that once you start to get just a little more complex the difficulty increases far more rapidly.<br/> <br/> For example there seems to be no rational place to save modu...
by Chris.Rowland
Mon Apr 09, 2012 9:49 am
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 335655

Re: Debian Hard Float (armhf) for RPi

<t>I'm sure that the trust issue with a distributed build could be solved by some process such as compiling each part multiple times and checking signatures to remove rogue versions.<br/> <br/> But it's clearly not something that can be done without the cooperation of the powers that be and I can se...
by Chris.Rowland
Sun Apr 08, 2012 8:32 pm
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 335655

Re: Debian Hard Float (armhf) for RPi

<t>Could the 10,000 packages be built using some distributed background build process rather like SETI at Home? Each source code file is downloaded and compiled in the background and the resulting output uploaded for use by the next stage in the process.<br/> <br/> Or is this just adding more comple...
by Chris.Rowland
Sat Apr 07, 2012 8:33 am
Forum: General discussion
Topic: SD Card Setup
Replies: 17
Views: 16446

Re: SD Card Setup

<t>The disk image is formatted into three partitions.<br/> <br/> One is about 75Mbytes in size, it is formatted using the FAT32 file system and is the only part that Windows can see.<br/> <br/> The other two are formatted using a Linux file system.  A Windows system can't see these so as far as its ...
by Chris.Rowland
Sat Apr 07, 2012 7:45 am
Forum: General discussion
Topic: Class 10 SD cards on the production boards
Replies: 81
Views: 31007

Re: Class 10 SD cards on the production boards

<t>Chromatix said: <br/> <br/> <br/> I made pretty graphs of my benchmark results.  Notice how the Class 10 cards are not so often faster than Class 4 or 6 equivalents in practice.<br/> <br/> Synthetic benchmarks are on the left.  Practical ones, involving a real filesystem, are on the right.<br/> <...
by Chris.Rowland
Thu Apr 05, 2012 11:15 pm
Forum: Off topic discussion
Topic: Did anyone of you turn their back on MS Windows definitely?
Replies: 68
Views: 11157

Re: Did anyone of you turn their back on MS Windows definitely?

<t>If the Linux people had put effort into designing the system for usability it could have destroyed Windows.  Attacking Windows doesn't do that. Microsoft just laughs - all the way to the bank.<br/> <br/> An example:<br/> <br/> I prefer to use Libre Office at home, even though my MSDN license mean...
by Chris.Rowland
Wed Apr 04, 2012 3:55 pm
Forum: General discussion
Topic: Need for R-Pi 'user guide'
Replies: 15
Views: 2131

Re: Need for R-Pi 'user guide'

<t>AIUI the USB specification is for a maximum of 500 mA and even that requires some sort of negotiation. That's not enough to reliable run the Pi, especially as it does no power negotiation and may not get even that.<br/> <br/> I don't think that supplying too little power will damage the Pi, it ju...
by Chris.Rowland
Tue Apr 03, 2012 12:42 pm
Forum: General discussion
Topic: Re: Sad about removal of I2S. Why was this change made?
Replies: 76
Views: 45258

Re: Sad about removal of I2S. Why was this change made?

ceteras said:

But why put the resistors if the config bits are not read? (some are at +3V3, some at GND, here)
If a CMOS input is not pulled high or low it tends to drift to about 50% and take a lot of current. (Horowitz and Hill: the Art of Electronics, P390)
by Chris.Rowland
Tue Apr 03, 2012 9:39 am
Forum: General discussion
Topic: Potential power source
Replies: 83
Views: 13057

Re: Potential power source

<t>Using a weak power supply on a computer is a recipe for intense frustration.<br/> <br/> As people have said if the power drops, even for an instant, memory and processors get corrupted.  If you are lucky it will crash, if not it will continue to work but with random code or data changes. This giv...

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