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Re: Aleph1 Elvis podule in RiscPC - compatibility with OS4 versions?

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Dave Daniels

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Aug 27, 2012, 4:11:05 AM8/27/12
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In article <ufd*03...@news.chiark.greenend.org.uk>,
Theo Markettos <theom...@chiark.greenend.org.uk> wrote:
> Andrew Wickham <ajw...@yahoo.co.uk> wrote:
> > oops, that should have read "extra-cpu" not "2ndprocessor" but that
> > group
> > now seems rather moribund anyway.

> Well, extra-cpu was intended for precisely this sort of thing, but I doubt
> anyone reads that any more.

> I suspect Kinetic is not going to work due to extensive memory map changes,
> but RISC OS 4 and later might be more likely to work on a normal ARM. Does
> it work with a StrongARM on RO3.7? If so, SA on RO4/Adjust have a
> reasonable chance of working. RISC OS 5 probably won't work.

I can tell you that !PC 3.06 or earlier do not work with RISC OS
6. I downloaded the source for it that Aleph One kindly made
open source and fixed it in version 3.08 of !PC. That was
supplied on the last RISC OS 6 CD. !PC was well written and used
the documented APIs but RISC OS ltd changed these in RISC OS 6
breaking !PC in various ways. (IIRC it was things like no longer
being able to find the physical address of the video memory
which !PC needs for good technical reasons plus OS_Memory in
RISC OS 6 is broken.) It works fine with a StrongARM processor.
IIRC it worked with RISC OS 4 as well but I think you needed !PC
3.06. There are references to the PC podule in the !PC source so
it might still work with that. Theoretically it might be
possible to get the PC podule working in an Iyonix by just
recompiling !PC as 32 bit. There is one tiny assembler module
and the rest is in C so it should be trivial to do this, but I
do not think we are in "killer app" territory here!

> Theo

Dave Daniels

--
NB: Apologies for the mangled address. The name is correct but
replace 127.0.0.1 with ormail.co.uk


cfe...@freeremoveuk.com.invalid

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Aug 27, 2012, 6:55:27 AM8/27/12
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In message <52c5b67162d...@ormail.co.uk>
Dave Daniels <dave_d...@127.0.0.1> wrote:

> In article <ufd*03...@news.chiark.greenend.org.uk>,
> Theo Markettos <theom...@chiark.greenend.org.uk> wrote:
>> Andrew Wickham <ajw...@yahoo.co.uk> wrote:
>>> oops, that should have read "extra-cpu" not "2ndprocessor" but that
>>> group
[snip]
> Theoretically it might be possible to get the PC podule working in an
> Iyonix by just recompiling !PC as 32 bit. There is one tiny assembler
> module and the rest is in C so it should be trivial to do this, but I
> do not think we are in "killer app" territory here!

Is the updated source available on the web - am using R0 5.19 (19 Jun
12) with my SA RPC - and it would be interesting to see if I could use
the Pc card.

What was the latest version of 'Windows' to run on the PC card?


--
Colin Ferris Cornwall UK

Andrew Wickham

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Aug 28, 2012, 5:28:27 AM8/28/12
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On 24 Aug, 22:14, druck <n...@druck.org.uk> wrote:
> On 23/08/2012 13:04, Andrew Wickham wrote:
>
> > As this concerns a PC card, RiscPC hardware and RISC OS, it did not
> > seem to fit properly in hardware or 2ndprocessor, hence "misc".
>
> csa.extra-cpu is the place which was created to deal with this issue. I
> look forward to answering when I see the post there.
>
> ---druck

I look forward to your input. To paraphrase the question, can you
shed any light on the point in RiscPC hardware and/or RISC OS
development when the 486 "elvis" podule (using the "e" variant of !PC,
e.g. version 2.06e) ceased to work, assuming it has so ceased?

On the assumption that you have not been following the thread on
"misc", I have had some responses concerned with PCPro and RiscPC co-
processors, not directly in point but with some encouraging
indications that source code might be adaptable without too much
difficulty (at least for those skilled in such things). I have also
had the realistic comment that I may well be the only person
interested in a 486 podule, but am hoping you might disprove that!

Regards,
Andrew

Dominic Holton

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Sep 16, 2012, 4:46:33 PM9/16/12
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I have to say that I'd be interested too although probably only from the
point of view of knowing if it would actually work - I think I had a 486
podule somewhere in my collection (or was it a 386 podule?)

Thanks,
Dominic
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