comp.sys.acorn.programmer Google Group

Re: Using BASIC from C Applications effciently

st...@kappa.me.uk (Steve Drain) — Mon, 11 Nov 2009 10:40:58 UT

How good to hear from you. I could never have worked out how it could be
implemented, but your split memory method had crossed my mind. However,
I thought you might run the BASIC program as the primary calling the C
code, which would drop back into BASIC when a driver was needed.
Communication would be via a memory block. Could that work?

Re: Learning ARM assembler...

n...@rjek.com (Rob Kendrick) — Mon, 11 Nov 2009 09:47:27 UT

On 23 Nov 2009 02:48:25 +0000 (GMT)
GCC on ARM is woefully awful, and IME the maintainers have no interest
in fixing it. It's actually getting significantly worse as time goes
on. I've had it calculate things twice (once manually, only to throw
the result away and then call an expensive built-in), and completely

Re: Learning ARM assembler...

theom+n...@chiark.greenend.org.uk (Theo Markettos) — Mon, 11 Nov 2009 02:48:25 UT

Looks handy. Funnily enough I was talking to someone from ARM's compilers
group this week, who said that the push towards netbooks is meaning they're
having to do serious work on their compiler to keep up with all the work
that's happened for x86 compilers. And it looks like some of these
improvements will be free (fitted to GCC, I assume). Apparently ARM are

Re: Using BASIC from C Applications effciently

st...@revi11.plus.com (Ste (news)) — Sun, 11 Nov 2009 17:59:19 UT

In article
<208890ba-2049-4a85-8764-efb8a 1eee...@k4g2000yqb.googlegroup s.com>,
Agreed. The alternative, as I suggested, is to implement the BASIC bit as a
simple Wimp task and use Wimp message passing between the C task and it.
That way, the Wimp ends up doing (pretty much) all of the work you described.

Re: Learning ARM assembler...

n...@rjek.com (Rob Kendrick) — Sun, 11 Nov 2009 17:42:54 UT

On Sun, 22 Nov 2009 17:13:05 GMT
[link]
Some snippets:
"In the ARM the data bus is 32 bits wide hence there are 32 wires so
the ARM chip is said to be a 32 bit chip."
"Another effect of the RISC design is low power consumption (hence no
heat sinks or fans required!)."

Re: Learning ARM assembler...

n...@druck.freeuk.com (druck) — Sun, 11 Nov 2009 17:13:05 UT

Would you like to point out the exact section, for those of us with
short attention spans?
---druck

Re: Learning ARM assembler...

n...@rjek.com (Rob Kendrick) — Sun, 11 Nov 2009 15:21:39 UT

On Sat, 21 Nov 2009 20:32:49 GMT
Although I gave up reading it half way through the first part, due to
its extensive jingoism and/or simple falsehood.
Dave Thomas recently published an excellent series on his website,
however, including a big section on writing C code that produces good
ARM code. Plenty of eye-openers:

Re: Using BASIC from C Applications effciently

ge...@gerph.org (Gerph) — Sun, 11 Nov 2009 02:29:12 UT

Apologies for a response to such an outdated message, but a friend
just mentioned this in conversation and, after explaining how you do
this to him, I thought it might be useful to at least reply to the OP.
As you (and, I see, others) suggest, the BASIC and C applications do
have to exist within the same space and using system() to invoke the

Re: Learning ARM assembler...

paulstew...@phawfaux.co.uk (Paul Stewart) — Sat, 11 Nov 2009 20:32:49 UT

In message <8fc50089-2c5a-4869-9830-a9948 761d...@k17g2000yqb.googlegro
ups.com>
The above link now contains direct links to the 8 part Risc World ARM
Assembler tutorials.
Regards

Re: IfRunning

davehig...@dsl.pipex.com (Dave Higton) — Wed, 11 Nov 2009 22:41:29 UT

In message <50bc550fa8ne...@Torrens.org.u k>
Just the job, Richard - many thanks. Works a treat.
Now I have an Obey file that starts the LanMan98 Filer iff not
already running, then calls Connect98 on my NAS drive.
Dave

Re: IfRunning

news+14...@torrens.org.uk (Richard Torrens (News)) — Wed, 11 Nov 2009 22:05:48 UT

In article <3587c5ba50.davehig...@dsl.pip ex.com>,
The module FilerHRun implements IfTask and IfNTask amongst others.
[link]

Re: IfRunning

jn.nntp.scrap...@wingsandbeaks.org.uk (Jeremy Nicoll - news posts) — Mon, 11 Nov 2009 23:06:11 UT

Here's a not altogether helpful reply ;-)
I recall looking at the source of some other *Ifvariant command (possibly
IfThere) at some point and seeing that it seemed to work by evaluating the
condition then plugging 'true' or 'false' or 1/0 or something like that into
the condition, so the command buffer

Re: IfRunning

spamt...@mw-software.com (Martin Wuerthner) — Mon, 11 Nov 2009 11:25:28 UT

In message <mpro.kt6x9k00003b500qf.n...@p ittdj.co.uk>
Ah, that is very clever. The other "which" ports I have seen only
perform the core function of finding executables on the path. This one
really looks at modules that provide the given command first. Very
useful.
Martin

Re: Looking for Centronics related code

xlta...@gmail.com (Xavier) — Mon, 11 Nov 2009 10:15:50 UT

Hello David.
Would you be ok to make the source code available so that I try to
connect to
the v6z80p board ?
Cheers,
Xavier.

Re: IfRunning

n...@pittdj.co.uk (David Pitt) — Mon, 11 Nov 2009 07:10:32 UT

The Dawsun ifrunning is 26bit which did not work here on OS4.04, stopped by
a 'Window Manager in use' error.
*which is a utility to find the source of * commands :-
[link]
No.