RTLinux runs on x86, PowerPC, Alpha, and (one, soon to be 2) varieties
of MIPS.
As for SMP, RTLinux has no theoretical limitation on number of CPUs.
On Mon, Nov 27, 2000 at 01:35:04PM +0800, mai wrote:
> Thank you for your reply,I would rather know which type of processor that rt-linux
>support?Can it support ARM,PowerPC,MIPS?In other words,
> Can I download the compiler of ARM,PowerPC,MIPS?
> ----- Original Message -----
> From: Steven Chung <[EMAIL PROTECTED]>
> To: mai <[EMAIL PROTECTED]>
> Sent: Monday, November 27, 2000 1:20 PM
> Subject: Re: [rtl] processors support
>
>
> > Hi Mai:
> >
> > The short answer if eight (8). A downloaded rtai-1.5 sets it to 2 as
> > described below. RTAI narrates the following in rtai-1.5/include/rtai.h:
> >
> > If NR_RT_CPUS > 8 RTAI must be changed as it cannot use APIC flat delivery
> > and the way processor[?].intr_flag is used must be changed (right now it
> > exploits the fact that the IF flags is at bit 9 so that bits 0-7 are used
> > to mark a cpu as Linux soft irq enabled/disabled. Bad but comfortable, it
> > will take a very very long time before I'll have available SMP with more
> > than 8 cpus. Right now they are only:
> >
> > #define NR_RT_CPUS 2
> >
> > Where, as you might have guessed, NR_RT_CPUS, represents the total number of
> > CPUs.
> >
> > Have fun!
> >
> > Steven Chung
> >
> > On Sun, 26 Nov 2000, you wrote:
> > > Hello everybody,
> > > I can't get the document which tell me how many processors that rt-linux
>support.Would you please tell me that?Thank you!
> > >
> > > mai
> > > -- [rtl] ---
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> >
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--
---------------------------------------------------------
Victor Yodaiken
Finite State Machine Labs: The RTLinux Company.
www.fsmlabs.com www.rtlinux.com
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