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by AMcS
Sat Mar 16, 2013 12:14 am
Forum: RISCOS
Topic: Solved the "'the disk drive is empty' - CANCEL/RETRY" error
Replies: 10
Views: 4614

Re: Solved the "'the disk drive is empty' - CANCEL/RETRY" er

RISC OS checks if the spring is closed (to see if the card is in place), Linux doesn't. You can't run Linux without the card being in place (so what's the point in checking?); in RISC OS' case you can swap cards once the OS has booted - so knowing when a card is "in place" or that the card has been...
by AMcS
Fri Mar 15, 2013 10:00 pm
Forum: RISCOS
Topic: Boot problem
Replies: 36
Views: 6176

Re: Boot problem

Just tried the new RC7 release and it works fine :-) One thing to note however, previously I got to the boot screen telling me how much memory I had which stated 384MB, now it says 128MB which is confirmed looking at the task manager. I guess this is plenty however shouldnt it be 512MB or thereabou...
by AMcS
Fri Mar 15, 2013 9:19 pm
Forum: RISCOS
Topic: Solved the "'the disk drive is empty' - CANCEL/RETRY" error
Replies: 10
Views: 4614

Re: Solved the "'the disk drive is empty' - CANCEL/RETRY" er

Ah, thanks for the explanation. That's actually quite cool then. Didn't think you'd be able to swap the card while running. No problem, you can use this mechanism for copying files from one card to another (for example) - I believe RISC OS Open's NutPi software collection SDHC card uses it for tran...
by AMcS
Wed Mar 13, 2013 8:43 am
Forum: RISCOS
Topic: Solved the "'the disk drive is empty' - CANCEL/RETRY" error
Replies: 10
Views: 4614

Re: Solved the "'the disk drive is empty' - CANCEL/RETRY" er

Wow! Perfect. That's exactly the problem I was having. Assumption was from various posts that it could have been an issue with particular SD cards or even certain Pi models, but turns out it's as simple as this! I flicked the spring back into place and now RISC OS boots perfectly. Strange though th...
by AMcS
Tue Mar 12, 2013 9:15 pm
Forum: RISCOS
Topic: Memory types on ver. B
Replies: 10
Views: 5385

Re: Memory types on ver. B

Seems like RISC OS Open have updated the image (available from the RaspberryPi download page) to address the compatibility issue with Hynix memory as used on some RPi Model B boards. Further information can be had on https://www.riscosopen.org/news/articles/2013/03/12/raspberry-pi-release-rc7-out-no...
by AMcS
Sat Mar 09, 2013 1:49 pm
Forum: RISCOS
Topic: Charm Programming on RiscOS
Replies: 22
Views: 4165

Re: Charm Programming on RiscOS

Mobsie wrote:Hi,

i start to port some of my older "little" games to RiscOS with Charm.
I post then some examples and maybe my code will help.

Mobsie
Thanks Mobsie !
by AMcS
Sat Mar 09, 2013 10:57 am
Forum: RISCOS
Topic: Memory types on ver. B
Replies: 10
Views: 5385

Re: Memory types on ver. B

Hynix chips were used in the very early boards, Samsung chips are used for 256MB or 512MB http://elinux.org/RaspberryPi_Boards Thanks for that Cloudcentric ! Didn't see any Hynix 512M there, but it may be that the Hynix 512MB are newly introduced (or perhaps not even out yet on released boards), or...
by AMcS
Sat Mar 09, 2013 10:16 am
Forum: RISCOS
Topic: Charm Programming on RiscOS
Replies: 22
Views: 4165

Re: Charm Programming on RiscOS

I suppose this might be a good time to return to the topic? Has anything interesting been written in Charm? An Ackermanns? It might be interesting to see how fast that exercises thru the stack compared to BBC Basic. A few examples, documentation or such would probably help. The only problem with ne...
by AMcS
Sat Mar 09, 2013 10:08 am
Forum: RISCOS
Topic: Memory types on ver. B
Replies: 10
Views: 5385

Re: Memory types on ver. B

The big chip in the middle, I assume, is the memory. I saw one photo online that shows Hynix and the one I have shows Samsung. Yes the largest chip is the memory (note it sits exactly over and is joined to the CPU which sits immediately underneath it - this arrangement is called a "POP" (Package On...
by AMcS
Fri Mar 08, 2013 11:56 pm
Forum: RISCOS
Topic: Charm Programming on RiscOS
Replies: 22
Views: 4165

Re: Charm Programming on RiscOS

Thank you, AMcS for diffusing a potentially unfortunate occurrence. Whilst I was a programmer I was convinced that I was a jolly good one. It is now possible for me to see a wider picture. As a consultant analyst/programmer I was only pressed into service when all other avenues had failed or were t...
by AMcS
Fri Mar 08, 2013 10:34 pm
Forum: RISCOS
Topic: Charm Programming on RiscOS
Replies: 22
Views: 4165

Re: Charm Programming on RiscOS

I visited the link but the video didn't play on my system.. so.. Just because it ran a long time ago on old technology doesn't mean it's flexible does it? In fact I can see no correlation whatsoever. VB ran a long time ago on pants old laptops but had more holes than a string vest because even the ...
by AMcS
Tue Mar 05, 2013 9:59 pm
Forum: RISCOS
Topic: Boot problem
Replies: 36
Views: 6176

Re: Boot problem

Thanks for confirming that AMcS, it does the same to every OS i have tried other then linux. It over writes something below 1MB, when testing my bare metal OS it crash if i do not load it after 1MB, but it seem random, as in, it can crash right away or after two mins. With RISC OS, it fails to boot...
by AMcS
Mon Mar 04, 2013 11:00 pm
Forum: RISCOS
Topic: Boot problem
Replies: 36
Views: 6176

Re: Boot problem

Does your RiscOS work OK, with the latest firmware ? https://github.com/raspberrypi/firmware/tree/master/boot Namely start.elf As i get random crash's, it seem to over write some thing below 1MB. Older start.elf work fine. Note: this crashing is on older 256 and 512mb pi's, linux works fine, with a...
by AMcS
Mon Mar 04, 2013 7:07 pm
Forum: RISCOS
Topic: Boot problem
Replies: 36
Views: 6176

Re: Boot problem

Well, I've tried those 3 GitHub files, along with today's ROOL posted image on my 2 weeks old RPi model A, & RISC OS works just fine. Is your RPi more recent than that? The RaspPI download page mentions specifically Model B, 512 MB and Hynix memory are effected. So your Model A and it would not be ...
by AMcS
Sun Mar 03, 2013 11:03 am
Forum: RISCOS
Topic: Boot problem
Replies: 36
Views: 6176

Re: Boot problem

Might it be because I am using a TV? Does RISC OS perhaps default to an image resolution not supported by my TV? That said apart from a few seconds of the green led ligthing up nothing appears to be happening. Cheers It only takes RISC OS a few seconds of activity to start - I find the green led fl...
by AMcS
Wed Feb 27, 2013 9:27 pm
Forum: RISCOS
Topic: Very basic guide to BASIC please?
Replies: 28
Views: 4447

Re: Very basic guide to BASIC please?

RUN - Runs your program (surprise that...). One question about that: How do you STOP a running program which is in a loop? I note you provided a controlled escape in your example (mouse button press) but, if I got into a never ending loop, how would I break out? Generally pressing the <Escape> key ...
by AMcS
Tue Feb 26, 2013 10:57 pm
Forum: RISCOS
Topic: Very basic guide to BASIC please?
Replies: 28
Views: 4447

Re: Very basic guide to BASIC please?

Thanks all, on a whim I tried using CAPs for the keywords and surely enough things started to work a little more so I came back to add that, only to find this amazing array of information including AMcS's comprehensive mini-manual, all very much appreciated, thanks. Thanks Sirius but comprehensive ...
by AMcS
Tue Feb 26, 2013 9:35 pm
Forum: RISCOS
Topic: Very basic guide to BASIC please?
Replies: 28
Views: 4447

Re: Very basic guide to BASIC please?

I've tried searching this forum for the answers, I really have, but I just can't find them: I've finally gotten around to firing up a card with RISCOS on it - looks nice. Now I want to write, save, load and run a simple BASIC program. So far, I've only found that if I press F12, I get into a comman...
by AMcS
Mon Feb 25, 2013 11:07 pm
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

My question is somewhat off topic, but this thread seems like a good place to ask it. Which Raspberry OS would be best for writing a book on assembly language programming? On operating system - you'd get a larger audience with Raspbian. Linux/Rasbpian would probably be better aligned with what you'...
by AMcS
Sun Feb 24, 2013 12:44 pm
Forum: RISCOS
Topic: Riscos Startup peculiar
Replies: 14
Views: 4418

Re: Riscos Startup peculiar

Hi dntpls, Sorry to be pedantic.. but.. Have you tried the RiscOS card from the pi that boots in the one that doesn't? (I sometimes forget the sync command after issuing a dd and get a spoiled load :oops:) So I put it in my pi that works (number 1) and it boots up. Then i put it in number 2 and it ...
by AMcS
Sat Feb 23, 2013 11:24 pm
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

Bare metal sub forum is for bare metal post, with no OS. I think "Other languages" is better for linux or riscos assembly ?. Agreed, as it is not permitted to have a specific Assembler Forum - "Other Languages" is probably a better choice than "Bare Metal" as a place to discuss assembly related mat...
by AMcS
Sat Feb 23, 2013 7:27 pm
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

So I'd suggest giving it a rest. Since ASM, as you say, is a transferable skill, are there any other forums out (not Raspberry Specific, since ASM isn't Raspi specific) there you can subscribe to? I could point out that knowledge of C/C++ is transferrable and isn't Raspi specific either yet it has ...
by AMcS
Sat Feb 23, 2013 12:14 pm
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

Perhaps rename "Bare metal" to "Bare metal/ASM"? I agree that would be an improvement but the thing is Bare Metal is too specific to the Pi (we're talking about accessing hardware specific features on *one* ARM based platform - with a non-standard GPU). ARM assembler is a more transferrable skill a...
by AMcS
Sat Feb 23, 2013 11:59 am
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

Supply and demand - C/C++ has a forum because lots more people use that than ASM (because, in fact, high level languages are easier to use than ASM, according to me). It difficult enough monitoring the plethora of forums already here (I think there are too many myself), adding more just makes the m...
by AMcS
Sat Feb 23, 2013 2:30 am
Forum: Other programming languages
Topic: No ASM Forum??
Replies: 87
Views: 12862

Re: No ASM Forum??

I have wondered time and again why there is no ARM assembly language forum in the RaspberryPi forums. It seems to me baffling too given that having created a (successful) and extraordinarily low cost ARM platform that one of it's key selling points is not being exploited. Pi is a golden opportunity...

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