Am 09.02.2013 um 00:36 schrieb Matt Shaver: > On Thu, 7 Feb 2013 22:48:49 -0500 > Tom Easterday <tom-...@bgp.nu> wrote: > >> Michael, >> I recall seeing a message from you a while back saying you had given >> up on raspberry pi (I'm paraphrasing) but I can't seem to locate that >> in my mail at the moment. I was curious why it was you abandoned it? >> Was it an I/O issue or performance with real time? Did you >> ultimately get the Xenomai build working on it? Thanks, -Tom > > I think I've found the relevant quotes from way back on the list: > > On Mon, 03 Dec 2012 05:44:44 -0600 > Charles Steinkuehler <char...@steinkuehler.net> wrote: >> On 12/2/2012 10:22 PM, Michael Haberler wrote: >>> As for the Raspberry: that has very limited potential - the >>> platform is about half as fast as the Beaglebone, has fairly >>> minimal GPIO, and it is wed to the Broadcom chipset, which I would >>> rate as a company which still doesnt get it. A mean voice said >>> about the chipset used on the Pi 'half of it isnt documented, and >>> the other half doesnt work'. Thats not entirely true but there is >>> something to that comment. >> >> Even worse, the Pi isn't an ARM chip with a bunch of stuff attached, >> it's a black-box video decoder/GPU that happens to have an ARM as a >> co-processor. The GPU is in total control of the system (including >> booting from flash), everything about the GPU is undocumented, and the >> GPU can eat up as much bus/memory/system as it wants, holding off even >> a real-time Linux kernel for unknowable amounts of time. >> >> I agree with you that Broadcom doesn't get it, and TI does.
sorry Tom, I missed that one. No new revelations I could add. thanks, Matt! - Michael > > Thanks, > Matt > > ------------------------------------------------------------------------------ > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
