Go to advanced search

by NigelJK
Thu Nov 20, 2014 12:52 pm
Forum: RISCOS
Topic: BBC BASIC Raspberry Pi port. Loading from tape.
Replies: 14
Views: 5813

Re: BBC BASIC Raspberry Pi port. Loading from tape.

IIRC the tape interface on the BBC B was an RS232 serial interface. This used a standard 5 pin din and there was an a/d converter at the Beeb end to turn the squeaks and squawks into binary. It was about 2400 baud IIRC. You should be able to knock something up for the RPi and the software to decode ...
by NigelJK
Thu Oct 24, 2013 11:11 am
Forum: RISCOS
Topic: Riscos programming
Replies: 7
Views: 2259

Re: Riscos programming

or search the PRM's index ....
by NigelJK
Thu May 30, 2013 7:23 am
Forum: RISCOS
Topic: Audio capabilities in RISC OS?
Replies: 2
Views: 3021

Re: Audio capabilities in RISC OS?

There are a whole bunch of sample players for ROS. Here's an interesting link (from the legendary Acorn Arcade) on the whole sound system in ROS and near the bottom some sample code on how to play/control wav files etc. As this is (supposed to be) hardware independent (can anyone verify that HAL has...
by NigelJK
Wed May 22, 2013 7:30 am
Forum: Other programming languages
Topic: Vintage Basic
Replies: 16
Views: 7513

Re: Vintage Basic

Head over to the RiscOS forum (in the Distro's section). RiscOS supports the latest version of (true) BBCBasic, boots to what you want (including to a Basic command line) and is 'simple' in the way of Micros of old.
by NigelJK
Tue Apr 23, 2013 10:10 am
Forum: RISCOS
Topic: RISC OS Wakefield 2013 Show
Replies: 21
Views: 5433

Re: RISC OS Wakefield 2013 Show

Dare I ask if Elite is working on the emulator?
by NigelJK
Mon Apr 15, 2013 7:52 am
Forum: RISCOS
Topic: Trying to get an algorithm to run faster on RISC than wheezy
Replies: 71
Views: 10885

Re: Trying to get an algorithm to run faster on RISC than wh

Just to add some spice to the mix. The ARM uses about 2 watts of power, my current AMD 64bit cpu is rated at a (low) 60 watts! i7's (even the eco versions) start at around 45 watts and proceed up to 130 watts.
by NigelJK
Fri Apr 12, 2013 7:23 am
Forum: RISCOS
Topic: Trying to get an algorithm to run faster on RISC than wheezy
Replies: 71
Views: 10885

Re: Trying to get an algorithm to run faster on RISC than wh

mmm interesting windows results. Always figured .Net was a lash up.
Have you tried the same using VB6 as this compiles down to machine code (not pseudo-code as per anything .Net based, hence the interesting results as both vb.net and c#.net should compile to the same pseudo code).
by NigelJK
Wed Apr 10, 2013 7:54 am
Forum: RISCOS
Topic: Trying to get an algorithm to run faster on RISC than wheezy
Replies: 71
Views: 10885

Re: Trying to get an algorithm to run faster on RISC than wh

It might be nice to convert this to BBCBasic and see where you get. Even better, see if you can re-write it in ARM machine code. This would cover the 'optimisation' angle as BBCBasic is better optimised for the ARM processor than the current 'C' compilers (never really a native language for RiscOS, ...
by NigelJK
Thu Apr 04, 2013 1:29 pm
Forum: RISCOS
Topic: Using RISC OS with a 2 button mouse
Replies: 6
Views: 3633

Re: Using RISC OS with a 2 button mouse

by NigelJK
Fri Mar 22, 2013 11:39 am
Forum: RISCOS
Topic: RISC OS included in OS types reviewed in Linux Format
Replies: 35
Views: 7247

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

I have personal experience of the way this was achieved. We were 'given' a 5 station at-clone Ethernet network by Zenith. This was when PC's were new and the retail cost of this 'network' would have been close to £50K. I also understand that Microsoft 'sponsor' one of the Oxford University dept's an...
by NigelJK
Fri Mar 01, 2013 12:06 pm
Forum: RISCOS
Topic: Very basic guide to BASIC please?
Replies: 28
Views: 4373

Re: Very basic guide to BASIC please?

The pointer to the file is a zip file (and to the dropbox file) which you can download onto a windows/mac then copy it over to the SD card. Only open it once you're inside RiscOS or you'll lose the file types.
by NigelJK
Thu Feb 28, 2013 2:58 pm
Forum: RISCOS
Topic: Very basic guide to BASIC please?
Replies: 28
Views: 4373

Re: Very basic guide to BASIC please?

In the programming section I uploaded a simple 'well behaved' WIMP programme which should help understand how to interact with the users on a a desktop. The whole thread is interesting from a 'beginners' point of view, but my post #53 is the one where the application is posted. http://www.raspberryp...
by NigelJK
Wed Feb 20, 2013 4:20 pm
Forum: Other programming languages
Topic: Basic on the system
Replies: 40
Views: 5603

Re: Basic on the system

<ahem> It's interesting to note that all posters are ignoring the 'elephant in the room'. It's called BBC Basic for a very good reason. The British Broadcasting Company decided that Micro's were going to become omnipotent (a *very* risky thing to think at the time) and that they would quiet like to ...
by NigelJK
Wed Feb 20, 2013 3:33 pm
Forum: RISCOS
Topic: Paralle data entry
Replies: 20
Views: 4807

Re: Paralle data entry

I find I have to call the !GPIOConfig utility before running the BASIC program. Presumably this may be called from within the program by a suitable command
Run it in the !Boot or !Run file. Or shell it out as a command (OSCLI in BBCBasic)
by NigelJK
Mon Feb 18, 2013 5:47 pm
Forum: RISCOS
Topic: Software Uninstalls
Replies: 3
Views: 1150

Re: Software Uninstalls

Before installing new software which *might* update the !system back it up (i.e. make a copy of it) onto a space pen drive).
by NigelJK
Tue Feb 12, 2013 2:29 pm
Forum: RISCOS
Topic: SWI documentation/info
Replies: 45
Views: 7638

Re: SWI documentation/info

I was leaning this way, how do you go about setting it up?
by NigelJK
Mon Feb 11, 2013 3:42 pm
Forum: RISCOS
Topic: SWI documentation/info
Replies: 45
Views: 7638

Re: SWI documentation/info

I've now managed to get my 'shelved' project working on my Pi. It's an IDE similar to those you find on other platforms. There are some differences as originally it was intended to augment what was already present and supplied by Acorn, such as the template editor. As such these items are not integr...
by NigelJK
Tue Feb 05, 2013 3:09 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 28752

Re: RISC OS; Pros and Cons

What I meant about 'real world task' was that given a known idiom that can be implemented on any machine, then it can only be other factors that that impact the performance. The bubble sort is ideal as it's simple to see how it functions and therefore can be used on just about any machine with any l...
by NigelJK
Fri Feb 01, 2013 6:53 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 28752

Re: RISC OS; Pros and Cons

I always used a bubble sort to get a good idea of real world performance. Generate 1000 random number, bubble sort, then print out with timings. I used to give this to my students to do, of course they first had to find out what a bubble sort was, then flow chart it and code it. Also a good test of ...
by NigelJK
Tue Jan 29, 2013 7:05 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 28752

Re: RISC OS; Pros and Cons

I've been playing this game for years. I decided years ago that the only really effective 'test' is how much useful work can you get done. I'll leave to one side the constant 'fighting' with the OS to get anything done that some 'other' OS's seem to think is standard. Only today using Word 2010 I no...
by NigelJK
Tue Jan 29, 2013 6:10 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 28752

Re: RISC OS; Pros and Cons

Oh that brought back some memories. We 'bench tested' Zenith XT clones vs BBC B's using BASICA vs BBCBasic. No guesses which won, but we were astounded that it was some 20X quicker. DaveS - I love the sound of your multi-core experiment. There was something doing the rounds years ago which 'pre-empt...
by NigelJK
Fri Jan 25, 2013 6:00 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 28752

Re: RISC OS; Pros and Cons

I cannot understand why people insist that the lack of threading is an issue. You have multi-tasking via co-operative and if you want to hog the machine just don't release the wimp_poll, it's just not 'the windows way' or 'the cuddly penguin way' The Risc PC was a multi-processor design as were prev...
by NigelJK
Tue Jan 15, 2013 6:59 pm
Forum: Other programming languages
Topic: How can I see output of BBC BASIC graphic commands?
Replies: 8
Views: 1968

Re: How can I see output of BBC BASIC graphic commands?

The CLI can be reached from the task manager icon on the icon bar. Menu gives you a few options, including the CLI.
by NigelJK
Tue Jan 15, 2013 6:03 pm
Forum: RISCOS
Topic: What does RISCOS bring to the RPi party
Replies: 63
Views: 17962

Re: What does RISCOS bring to the RPi party

I don't think you're comparing like with like, and at the risk of feed a troll I would say that you fundamentally mis-understand both what the RPi and Risc Os are about. If you want a full strength, fully mutli-user environment as a server I suggest you pay the premium for that. If on the other hand...
by NigelJK
Tue Jan 15, 2013 5:31 pm
Forum: RISCOS
Topic: gcc and RISC OS
Replies: 95
Views: 19281

Re: gcc and RISC OS

I would suggest that the task be a multitasking one or you may not ever get to the desktop, or even complete the boot up procedure correctly.

Go to advanced search