On Sat, Jun 30, 2012 at 07:56:52PM +0100, Tony Duell wrote:
So, the Rpi is goign to be sold mostly to people who
already have a
computer (at lleast in Eirope and the States). In whci hcase, why not
simply install prgrammign tools on said computer and program that.
That's simple. Cost. 25 quid (plus keyboard, mouse etc) for a
Raspberry Pi, or a lot more than 25 quid (plus keyboard, mouse etc) for
anything else.
The key thing here is that you said *a* computer. I want *several*
computers for my experiments in distributed model railway control
systems. And a school that wants to teach a whole load of kids
programming needs lots of computers too, and, just like me, has a tight
budget. Even if I could spare the space and put up with the heat and
noise, I couldn't afford to buy a bunch of cheap Dells. But I can
afford a dozen Raspberry Pis.
Actually, I _did_ have an appication in mind where I
might haev used one.
The reason I was asking about the GPIO port was that I wanted to see how
easy it would be to inteface it to an HPIB system. Given that the RPi
already has soem kind fo filesystem nd cna presuambly communicate with
USB stoeage deviecs
"some kind of filesystem"?
"can presumably communicate with USB storage devices"?
Have you even bothered to look at their website? Or are you so allergic
to online documentation that you demand that they print it all out and
post it to you before you buy?
Binary drivers
for Linux only, no other OS. GPU is proprietary,
undocumented and protected Broadcom IP; they will not disclose
That's the
reall downer for me.
Why, were you all excited at writing graphics demos with Banging Choonz,
or playing video games that would utilise all of the GPUs hardware to
the full? That, errm, doesn't seem like you at all!
The machine
boots because the GPU reads a FAT filesystem on the SD
card, looks for files of certain names, loads them into RAM and then
boots the ARM core and starts it executing.
Is that fully docuemtned? In otehr
wordsm if you don't want video
functions at all, can you work with the bare metal?
You probably need to use their boot-loader, to get the ARM part of the
chip started, although I'm speculating here, I've not bothered to even
look for that documentation, because I don't care. But once the ARM has
started, I presume that everything after that (modulo some X11 drivers)
is bog standard Linux, so could be replaced.
--
David Cantrell |
http://www.cantrell.org.uk/david
It wouldn't hurt to think like a serial killer every so often.
Purely for purposes of prevention, of course.