Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.sys.acorn.programmer > #1847

Re: Alignment exception examples

Show all headers | View raw

On 26/06/2012 23:17, chrisbazley@bigfoot.com wrote:
> On Tuesday, June 26, 2012 9:57:41 PM UTC+1, druck wrote:
>> On 26/06/2012 09:15, chrisbazley@bigfoot.com wrote:
>>> I think you forgot something: ARM3+FPA, ARM7500FE and emulated
>>> machines would boot slower with less free memory and run
>>> recompiled apps an order of magnitude slower.
>>
>> Do we care about FP performance on extremely old and slow
>> hardware?
>
> Well, my sister might because she uses an A5000.

We if she was worried about performance, she would surely have something
quicker, a Strong ARM Risc PC, A9, Iyonix, etc...

>> All my 32bit conversions broke compatibility with the ARM2/3 due to
>> the use of MRS/MSR instructions. I've not had one complaint in the
>> last 6 years. So I think the RISC OS world can stand a modicum of
>> progress and drop support for things produced 3 decades ago.
>
> I think it all comes down to what you think RISC OS is for.

I'm getting the feeling you think RISC OS isn't for the past, but for 
the ancient past!

> It seems that you want to run ported applications as fast as possible
> on the latest hardware, and to hell with backward compatibility. You
> don't even seem particularly bothered about executing incompatible
> code on an operating system that provides minimal safeguards against
> insidious side-effects.

No, what I want to see on RISC OS is ongoing software development 
inspired and made possible by the enhanced capabilities of new ARM 
hardware that is becoming available.

You wont get that if you insist all software maintains compatibility 
with ARM2 and and a thrice obsolete FP instruction set.

> I don't see the point of that, because you are competing with
> next-generation operating systems on exactly the same hardware, which
> I would expect to run the same applications faster and more stable
> with better control over threads and processes.

If you hadn't noticed they've already won and taken almost all of the 
developers with them, and not allowing the use of any new ARM toys aint 
going to bring them back.

> I am concerned about the effect of further fragmentation on what
> remains of the RISC OS 'scene', which is why I have never (and
> probably will never) compile software for an ISA that isn't
> compatible with ARM2. I don't think there are enough RISC OS users
> left to alienate the returnees who buy Acorn machines on eBay.

People buying old machines on ebay, only want to run sotfware from that 
era - its called a dead platform, and by not supporting anything new, 
you are making it deader.

---druck

Back to comp.sys.acorn.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Alignment exception examples druck <news@druck.org.uk> - 2012-06-23 20:55 +0100
  Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-23 13:21 -0700
    Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-24 11:35 +0100
      Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-24 04:02 -0700
        Re: Alignment exception examples druck <news@druck.freeuk.com> - 2012-06-24 17:29 +0100
        Re: Alignment exception examples Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-06-26 00:02 +0100
          Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-26 01:15 -0700
            Re: Alignment exception examples Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-06-26 11:51 +0100
              Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-27 05:40 -0700
                Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-27 22:43 +0100
            Re: Alignment exception examples Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-06-26 14:06 +0100
            Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-26 21:57 +0100
              Re: Alignment exception examples Martin Bazley <martin.bazley@blueyonder.co.uk> - 2012-06-26 23:20 +0100
                Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-27 22:51 +0100
              Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-26 15:17 -0700
                Re: Alignment exception examples Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-06-27 00:23 +0100
                Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-27 05:52 -0700
                Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-27 22:46 +0100
                Re: Alignment exception examples Nick Roberts <tigger@orpheusinternet.co.uk> - 2012-06-28 18:28 +0100
                Re: Alignment exception examples Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-06-29 18:38 +0100
                Re: Alignment exception examples Nick Roberts <tigger@orpheusinternet.co.uk> - 2012-06-29 20:14 +0100
                Re: Alignment exception examples druck <news@druck.freeuk.com> - 2012-07-04 20:50 +0100
                Re: Alignment exception examples spampling <spam.pling@btinternet.com> - 2012-06-27 07:58 +0100
                Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-27 05:44 -0700
                Re: Alignment exception examples spampling <spam.pling@btinternet.com> - 2012-06-27 18:13 +0100
                Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-27 22:47 +0100
                Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-27 23:04 +0100
                Re: Alignment exception examples chrisbazley@bigfoot.com - 2012-06-28 15:43 -0700
  Re: Alignment exception examples Thomas Milius <Thomas-Milius@t-online.de> - 2012-06-24 08:24 +0200
    Re: Alignment exception examples druck <news@druck.org.uk> - 2012-06-24 11:37 +0100
      Re: Alignment exception examples Thomas Milius <Thomas-Milius@t-online.de> - 2012-06-24 12:49 +0200
        Re: Alignment exception examples druck <news@druck.freeuk.com> - 2012-06-24 17:01 +0100
          Re: Alignment exception examples Thomas Milius <Thomas-Milius@t-online.de> - 2012-06-24 19:16 +0100
            Re: Alignment exception examples "Ste (news)" <steve@revi11.plus.com> - 2012-07-10 00:14 +0100
  Re: Alignment exception examples Steve Fryatt <news@stevefryatt.org.uk> - 2012-06-24 09:42 +0100
  Re: Alignment exception examples Martin <News03@avisoft.f9.co.uk> - 2012-06-27 15:36 +0100

csiph-web