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by polas
Wed Jul 24, 2013 9:15 am
Forum: RISCOS
Topic: What are people doing with RISC OS on the Pi?
Replies: 22
Views: 9200

What are people doing with RISC OS on the Pi?

Being a long term RISC OS user I think having it available on the Pi is fantastic - and has enabled me to do far more with it than I could do on my ageing hardware that it has replaced. I was wondering however, what most people are actually using ROS on the Pi for - once it is installed, you have go...
by polas
Fri Mar 22, 2013 9:54 am
Forum: RISCOS
Topic: RISC OS included in OS types reviewed in Linux Format
Replies: 35
Views: 7050

Re: RISC OS included in OS types reviewed in Linux Format

I've never had RISC OS fail to boot after a power cut. Same here, combined with the fact that it used to live in machine ROM made it virtually bullet proof when it was in widespread education use. I remember when schools were moving over to PCs and suddenly they had to employ specialist network man...
by polas
Thu Feb 14, 2013 3:32 pm
Forum: Staffroom, classroom and projects
Topic: Assembly - any use in teaching it?
Replies: 138
Views: 29065

Re: Assembly - any use in teaching it?

I am on Ubuntu 9.10, the PC its on is about 5 year old. Ubuntu runs great and does everything i need, in the mean time my wife got a new laptop and we installed the latest Ubuntu and i hate it, the new interface suck and its slow. I had exactly the same issue - was running an old version of Ubuntu ...
by polas
Wed Feb 13, 2013 12:58 pm
Forum: General programming discussion
Topic: Post modern BASIC (RFC)
Replies: 24
Views: 2287

Re: Post modern BASIC (RFC)

Good luck with this, if nothing else I am sure it will be an enjoyable experience. I think you have received some really good advice wrt the immediacy of being able to pick up BASIC and just go with it (maybe having tried a different flavour at some other point) - of course if your extension still p...
by polas
Fri Feb 08, 2013 1:21 pm
Forum: Staffroom, classroom and projects
Topic: Assembly - any use in teaching it?
Replies: 138
Views: 29065

Re: Assembly - any use in teaching it?

What do you believe and what are your reasons for believing it? You could make one of these threads for each programming language out there and get a lot of responses, but I don't see what the point is. It would be another thing if you provided your own opinions on the matter first. A good point - ...
by polas
Fri Feb 08, 2013 12:01 pm
Forum: Staffroom, classroom and projects
Topic: Assembly - any use in teaching it?
Replies: 138
Views: 29065

Re: Assembly - any use in teaching it?

If they don't think at a low level to some extent you'll end up the same as now where all they can do is move some figures in excell or pixels around in photoshop What I am wondering is whether or not it is all or nothing - for example there are probably plenty of Java programmers, DBAs etc out the...
by polas
Fri Feb 08, 2013 11:18 am
Forum: Staffroom, classroom and projects
Topic: Assembly - any use in teaching it?
Replies: 138
Views: 29065

Assembly - any use in teaching it?

As a follow on from the BASIC thread, an interesting debate has been going on about the merits of teaching assembly language - which isn't entirely off topic because some flavours of BASIC readily support mixing this in amongst the higher level code. Whilst it can on the one hand provide a more comp...
by polas
Fri Feb 08, 2013 10:53 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 129865

Re: BASIC - more harmful than useful?

jamesh wrote:Are you aware quite how smug you sound? It's always worth remembering there are people not as smart as you around. And also some who are smarter.
"The empty vessel makes the loudest sound" springs to mind
by polas
Fri Feb 08, 2013 10:36 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 129865

Re: BASIC - more harmful than useful?

Say what you will about Java, and as with all languages it of course has its deficiencies, but at least you can follow the write once run anywhere approach - with some caveats. I have always thought that one of the disadvantages to BASIC is that the lack of standardisation/specification means that e...
by polas
Thu Feb 07, 2013 10:53 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 129865

Re: BASIC - more harmful than useful?

Is it the same people advocating assembler as were advocating BASIC? ......and any abstraction from that is confusing, inefficient and generally harmful to their education. It certainly seems that way, which is funny because (IMHO) CS is all about creating and proving correct abstractions that none...
by polas
Thu Feb 07, 2013 10:30 am
Forum: RISCOS
Topic: Overclocking wrt RISC OS
Replies: 9
Views: 2205

Re: Overclocking wrt RISC OS

Based upon the information you guys have given me on this thread I overclocked my RPi last night (cpu to 900, 500 sdram and 400 for GPU core.) All seems to be running well and is perfectly stable. It does seem a little snappier although only used it for web browsing and email last night. I think I a...
by polas
Thu Feb 07, 2013 10:24 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 129865

Re: BASIC - more harmful than useful?

It's ironic that a thread on BASIC has morphed into a discussion about assembly language and teaching compilers ;) From reading this though, are people advocating mixing BASIC with assembly language for every day programming? From my own perspective, whilst BBC BASIC is ahead of it in terms of featu...
by polas
Wed Feb 06, 2013 7:21 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 129865

Re: BASIC - more harmful than useful?

Just use yacc (or bison) and let it generate a parser from a high level description. Not too hard to learn and can save you loads of time; especially if the language syntax "evolves". But I agree with you that the real "meat" of compiling, the more interesting bits, comes after the parsing phase. H...
by polas
Wed Feb 06, 2013 1:03 pm
Forum: RISCOS
Topic: Overclocking wrt RISC OS
Replies: 9
Views: 2205

Re: Overclocking wrt RISC OS

dom wrote: force_turbo combined with over_voltage sets the warranty bit.

Something like:
force_turbo=1
arm_freq=850
sdram_freq=500
core_freq=300

may well work, and not set warranty bit.
Great, thanks for that and it gives me a good starting point config wise to play around with this.
by polas
Wed Feb 06, 2013 9:44 am
Forum: RISCOS
Topic: Overclocking wrt RISC OS
Replies: 9
Views: 2205

Re: Overclocking wrt RISC OS

Thanks for the information. I was put off by reading that over clocking effects the warranty although I think that as of September 2012 this is no longer true? With those values do you need to do any stuff with the over voltage settings or do you tend to leave those alone and just set the correspond...
by polas
Tue Feb 05, 2013 5:01 pm
Forum: RISCOS
Topic: Overclocking wrt RISC OS
Replies: 9
Views: 2205

Overclocking wrt RISC OS

Afternoon all, I know a few people on this forum have already over clocked their RPi and run ROS on it. I was wondering firstly if this is safe for the RPi, if I need any additional cooling etc and what sort of stability problems I might face. Secondly, in the context of running ROS is it worth it? ...
by polas
Mon Feb 04, 2013 11:28 am
Forum: RISCOS
Topic: must seen by the filer
Replies: 6
Views: 1572

Re: must seen by the filer

To add a little more, ROS is different to many OSes in as much as when the filer "sees" an application (when you open the containing directory or like Tide mentioned it can be added to the boot look at list) then that application itself has the option of setting up a load of stuff such as file type ...
by polas
Fri Feb 01, 2013 4:48 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 27605

Re: RISC OS; Pros and Cons

rurwin wrote:There are cases where recursion is the right solution.
Operations on trees always spring to mind :) Coming back to the original point that started all of this, I still haven't seen any numbers that suggest/prove that ROS as an operating system has a hand in making interpreted languages run faster.
by polas
Wed Jan 30, 2013 4:45 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 27605

Re: RISC OS; Pros and Cons

If you can think of anything else that should be added please do say. If you are looking at benchmarking the underlying OS rather than the languages, which most of your suggestions seem to be aimed towards. Then it might be interesting to compare the scalability of, for example, the cost of opening...
by polas
Wed Jan 30, 2013 10:44 am
Forum: RISCOS
Topic: RISCOS - HDMI - NO SOUND
Replies: 10
Views: 4889

Re: RISCOS - HDMI - NO SOUND

hilbertdad wrote:Now the sound works fine
Fantastic, glad you got it all working
by polas
Tue Jan 29, 2013 2:14 pm
Forum: RISCOS
Topic: Aemulor - 26bit emulator for Raspberry Pi 'PreOrders
Replies: 37
Views: 7297

Re: Aemulor - 26bit emulator for Raspberry Pi 'PreOrders

Cool, I suppose paying for it was to be expected and £18 isn't a huge amount. However, I am currently using ArcEm on my RPi which is a very satisfactory solution and provides, generally, good backwards compatibility. Does anyone know what advantages Aemulor will have, over and above ArcEm, in order ...
by polas
Tue Jan 29, 2013 12:54 pm
Forum: RISCOS
Topic: RISCOS - HDMI - NO SOUND
Replies: 10
Views: 4889

Re: RISCOS - HDMI - NO SOUND

I had some issues getting sound working too but can confirm that it does work fine under ROS on my RPi now. The problem for me was that sound is either over HDMI or the 3mm jack but not both. What might be happening is that your board is picking up the incorrect configuration by default. It might he...
by polas
Tue Jan 29, 2013 11:03 am
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 27605

Re: RISC OS; Pros and Cons

Returned a value for every second elapsed. To what 'proper benchmarks' do you refer? The problem is that it is all too easy to write some trivial code, pop some timing in and come up with some numbers which are entirely meaningless. Whilst this might not sound obvious I motivate it via an example; ...
by polas
Mon Jan 28, 2013 3:03 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 27605

Re: RISC OS; Pros and Cons

For the same value of output running at stock processor speed Python returned approx 65k revolutions to BBC Basic's 360k. Is this a proper benchmark you ran or just some code knocked together? It would be interesting to compare the run times of BBC Basic code and some other language running under R...
by polas
Mon Jan 28, 2013 11:13 am
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 27605

Re: RISC OS; Pros and Cons

It was the claim that interpreted languages are faster as a result of running under RISC OS that I was questioning. Like I said before I don't think interpreted languages use the operating system intensively, so its more down to the their implementation rather than the operating system. Whilst obvi...

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