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by AMcS
Fri Feb 14, 2014 5:38 pm
Forum: RISCOS
Topic: Font background color
Replies: 3
Views: 2560

Re: Font background color

Is it possible to have the font background colour transparent, when using swi like OS_Write0. If so what are the SWI i should lookup. Thanks. If memory serves me right (not near my Pi at the minute !) using Fonts (as in Scalable Anti-aliased fonts) you need to use the Font_ module's SWI's. OS_Write...
by AMcS
Thu Feb 13, 2014 9:04 pm
Forum: RISCOS
Topic: USB Stick unreadable in Risc OS
Replies: 7
Views: 4462

Re: USB Stick unreadable in Risc OS

Hi All, I'm currently having a very frustrating problem, namely that when I plug a FAT32-formatted USB stick into my Pi under Risc OS, while the icon appears on the taskbar, clicking on it does absolutly nothing. I have tried re-fomatting the stick, using a differnt stick, and even Googling the pro...
by AMcS
Thu Feb 13, 2014 8:56 pm
Forum: RISCOS
Topic: BBC Basic compilable?
Replies: 33
Views: 10462

Re: BBC Basic compilable?

In fact the recent trend has been away from traditional 'compiled' languages, in which the entire program is translated to machine code, towards a two-step process of first compiling to a compact processor-independent 'byte code' which is then executed by a 'run time engine': the .NET framework wit...
by AMcS
Fri Feb 07, 2014 3:15 am
Forum: RISCOS
Topic: BBC Basic compilable?
Replies: 33
Views: 10462

Re: BBC Basic compilable?

No-one has mentioned the reason that BBC Basic is effectively not a compilable language: it has the "EVAL" statement where you can do things like input a string from a user (eg "whatever") and execute a command by evaluating "FNwhatever". Although in principle it could be compilable, it could only ...
by AMcS
Fri Feb 07, 2014 3:01 am
Forum: RISCOS
Topic: BBC Basic compilable?
Replies: 33
Views: 10462

Re: BBC Basic compilable?

Hi gents, thanks for the interesting replies. My reasons for posing this question were twofold - One, that code assembled or compiled to executable code should always run faster than the interpreted alternative - although of course that depends upon how it is done. In the old days the interpreter w...
by AMcS
Fri Dec 13, 2013 1:00 am
Forum: RISCOS
Topic: Book - Raspberry Pi RISC OS System Programming Revealed
Replies: 36
Views: 19262

Re: Book - Raspberry Pi RISC OS System Programming Revealed

[quote="DexOS]Hi AMcS thanks for the reply.[/quote]

No problem !

I think RO has a good future in front of it, there is a bit of a "buzz" around it that hasn't been there for sometime. It also represents coders with a new avenue to explore (people DO like challenges).
by AMcS
Thu Dec 12, 2013 11:58 pm
Forum: RISCOS
Topic: Book - Raspberry Pi RISC OS System Programming Revealed
Replies: 36
Views: 19262

Re: Book - Raspberry Pi RISC OS System Programming Revealed

Hi AMcS, Hi DexOS ! Its hard to put your finger on it, but i get the impression that RISC OS people are stuck in there ways and things much be done in a set way, or not at all. This has been good in the past and has kept RISC OS alive. That's probably why it worked and why they did it. Remember RIS...
by AMcS
Tue Dec 10, 2013 2:09 am
Forum: RISCOS
Topic: Book - Raspberry Pi RISC OS System Programming Revealed
Replies: 36
Views: 19262

Re: Book - Raspberry Pi RISC OS System Programming Revealed

Come back DavidS. I hope DavidS has not left, he's one of the best coders on the forum. I'm always wary of assembler evangelists (as I am wary of any evangelists, of any sort, who are unable to see other points of view), and people who claim what DavidS claims. He may be, as you say, a very compete...
by AMcS
Tue Dec 10, 2013 1:14 am
Forum: RISCOS
Topic: Book - Raspberry Pi RISC OS System Programming Revealed
Replies: 36
Views: 19262

Re: Book - Raspberry Pi RISC OS System Programming Revealed

I did a lot of low level stuff on RISC OS and found the OS ideal for this, but got put off the OS by the lack of encouragement for new programmers . When the next show was, seamed more important than new coders who new how to code at a low level. DexOS your contributions here with regards to RISC O...
by AMcS
Fri Nov 08, 2013 1:24 am
Forum: RISCOS
Topic: UK OS on UK Computer
Replies: 18
Views: 4050

Re: UK OS on UK Computer

We need to think out of the box, there's so many people that want to use the pi for example to do a single task, as fast as possible and has simple as possible. Example, its harder to do stuff under RISC OS than it is under bare metal, the OS just gets in the way and you need to fight it to do stuf...
by AMcS
Fri Nov 08, 2013 1:05 am
Forum: RISCOS
Topic: UK OS on UK Computer
Replies: 18
Views: 4050

Re: UK OS on UK Computer

Well just compare RISC OS 5.xx (shared source, HAL based) and RISC OS 6.xx (closed source, non-HAL) the former has been ported to various ARMv6/v7 platforms and also the Iyonix - while RO6.xx has only ever run on machines based on legacy hardware (IOMD - such as the RISC PC and the exceedingly rare...
by AMcS
Fri Nov 08, 2013 12:09 am
Forum: RISCOS
Topic: UK OS on UK Computer
Replies: 18
Views: 4050

Re: UK OS on UK Computer

That having been said in some cases complex protocols are being used - the sources of these are frequently in C - (I imagine implementing a USB stack in pure ARM Assembler would be painful). For me so long as more than 50% of RISC OS is in ARM assembler is acceptable, if the whole thing were ported...
by AMcS
Thu Nov 07, 2013 10:18 pm
Forum: RISCOS
Topic: UK OS on UK Computer
Replies: 18
Views: 4050

Re: UK OS on UK Computer

If RISC OS does go the C way, what do you think about doing what freedos did with dos, but we would do it for RISC OS. Maybe call it "FreeRISCOS". Sounds good to me Though we would need to figure out an plan. For example I thing that putting a HAL under the kernel is a bad idea (Only RISC OS 5 ever...
by AMcS
Thu Nov 07, 2013 9:51 pm
Forum: RISCOS
Topic: UK OS on UK Computer
Replies: 18
Views: 4050

Re: UK OS on UK Computer

Yes it is unfortunate that there is not a good assembler easily available, and that you have to do some searching for information on programming. Many just say use the BBC BASIC V assembler (Which as I have shown does work, though why when much better are available). You can achieve many things wit...
by AMcS
Wed Nov 06, 2013 9:39 pm
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 23995

Re: RISC OS Assembly Tutorials.

@DavidS - interesting. I've lived in CA since about '72 and have never seen an Archimedes. I think that one of my friends must have been working on the Newton project sometime around the time you got the Archimedes. My understanding is that Apple influenced the ARM ISA in the early days. Not partic...
by AMcS
Mon Nov 04, 2013 12:18 pm
Forum: RISCOS
Topic: RISC OS London Show
Replies: 5
Views: 2244

Re: RISC OS London Show

Thanks for that Bryan, it's much appreciated
by AMcS
Wed Oct 30, 2013 10:47 pm
Forum: RISCOS
Topic: RISC OS London Show
Replies: 5
Views: 2244

Re: RISC OS London Show

Did anyone attend? Anything new or exciting? Any reviews anywhere? The downside of living in Auckland is you miss such things! Couldn't make it unfortunately, did a quick Google but could find nothing newsworthy. As someone on the IconBar said it's a pity Drobe wasn't still around.... Perhaps some ...
by AMcS
Wed Oct 30, 2013 8:17 pm
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 23995

Re: RISC OS Assembly Tutorials.

They are a testament to the strong aesthetic pull of the ARM's original instruction set. Indeed, ARM Assembly started as a really neat, well structured comprehensible language. It (sadly) IMHO is being progressively butchered - but at least the core (as shown in BBC BASIC ARM assembler and the othe...
by AMcS
Wed Oct 30, 2013 8:02 pm
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 23995

Re: RISC OS Assembly Tuts.

Thanks for the tutorial's David, the general principles come through well (although the Assembler is not my preferred one BBC BASIC V inline - but hey each to their own :D ) Should I provide a BBC BASIC V version of each of my examples? Yes please, but only if it is not too much trouble. Also is th...
by AMcS
Wed Oct 30, 2013 1:22 am
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 23995

Re: RISC OS Assembly Tuts.

Thanks for the tutorial's David, the general principles come through well (although the Assembler is not my preferred one BBC BASIC V inline - but hey each to their own :D ) ABuffer: RESB 51 ;This will reserve 50 Byte buffer filled with zeros. ALIGN RESB just reserves a number of bytes all filled wi...
by AMcS
Wed Oct 30, 2013 1:13 am
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 23995

Re: RISC OS Assembly Tuts.

Aha! Tut as in tutorial, not as in tut-tut. Do you know this site: http://www.heyrick.co.uk/assembler/ ? Yes, ARM assembly language is seductive. Tie yourself to the mast and stuff your ears with wax. I have seen so many perish. Rick Murray's "Heyrick" site is a very good way of getting into ARM as...
by AMcS
Sun Oct 13, 2013 3:16 am
Forum: RISCOS
Topic: Do we exist?
Replies: 10
Views: 3202

Re: Do we exist?

I have never seen any forums so dead. Presumably you mean RISC OS forum, as my View Unread Posts shows over 350 posts in the last couple of days to all forums here. Of the OSes RISC OS is the third largest in terms of number of posts (it was the fourth a few months back), so would be one of the mor...
by AMcS
Fri Oct 11, 2013 2:25 am
Forum: RISCOS
Topic: 26 bit questions.
Replies: 4
Views: 1924

Re: 26 bit questions.

DavidS wrote: Thank you for your feedback.
No problem David, I am happy to help, please let us know how you get on with your deliberations.
by AMcS
Thu Oct 10, 2013 10:42 pm
Forum: RISCOS
Topic: 26 bit questions.
Replies: 4
Views: 1924

Re: 26 bit questions.

Ok obviously there are many ways to run 26-bit programs on a 32-bit only RISC OS. The question that I have is. Beings that there seems to be no issue with using a JIT based emulation layer to run 26-bit addressing applications: Is there any legal issue with saving the code that has already been tra...
by AMcS
Mon Oct 07, 2013 10:17 am
Forum: RISCOS
Topic: RISC OS and GPIO (again)
Replies: 12
Views: 4344

Re: RISC OS and GPIO (again)

Ok I guess that that limit does not exist any more. Thank you, you got me to drag out my scope for a quick test, and having added SPi to those tested I can say that it does support SPi. So to elaberate the GPIO module on the RPi supports: GPIO UART MMC/SPi and I2C And as far as I know that is all t...

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