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SubjectRe: Linux on 16-bit processors
try elks:

the economics aren't really there as far as I can tell given the cost of
embeded 386 and 486 class cpu's to say nothing of tiny powerpc and arm


On Wed, 19 Mar 2003 wrote:

> I'm interested on running Linux on some less powerful, cheaper 16 bit
> systems. I would like to know if there is a slimmed down version of the kernel (any
> version 2.2+) that can run on 16-bit CPUs. I know that linux "requires" a
> 32-bit CPU, but I know that it has run on less. I'm interested in any arch -
> really.
> I can't seem to find a slimmed down version of the kernel. Any projects out
> there? Something with decent performance would be cool too. :o)
> I'm not apart of the list, so if you could pleace CC: any replies to this
> e-mail ( that would be great.
> I asked before at a local user group (southflorida embedded user group)..
> and this is what info they got me. I just cut-n-pasted.
> <cut>
> To: Mick Weiss
> From: "" <>
> glad to help. you have interesting research.
> Most handhelds these days are 32 bit processors, even pagers. Mostly some
> ARM variant especially Intel StrongArm.
> The main obstacle to running Linux on smaller (cheaper) CPUs seems to be an
> MMU which Linux and most Unixes expect. For a Linux work alike, some RTOS's
> will have various POSIX layers corresponding to standard C library,
> real-time facilities, threads, and shell utilities. So if an application
> uses POSIX compliant calls, it can move from *ix to one of these operating
> systems.
> Most *Ix work alikes Lynx, and QNX claim POSIX compliance. Likewise
> embedded RTOSes like Red Hat eCos, rtxc, mentor ati nucleus, vrtx, vxworks
> etc.
> Even Microsoft supports many of these POSIX interfaces as do other non Unix
> OS's like Digital (now HP) VMS, IBM MVS, IBM VM etc
> Original Message:
> -----------------
> From:
> Date: Tue, 18 Mar 2003 14:39:45 +0100 (MET)
> To:
> Subject:
> Lineo supports processors in the following specific architectures:
> 32 bit with memory management
> 32 bit without memory management
> 16 bit/ 16 bit DSP
> 8 bit processor/ 8 bit controller
> and uclinux is a whopping $200 (its whopping when your just messing with it
> on your spare time ;), plus I'm not sure how its licenced (GPL?).
> ----
> after searching I found a few things on RTLinux and linux on handhelds, but
> -- oh well I'll keep looking (its only for myself, no business reasons, so
> its not important)
> miniRTL (after porting it) may be a good design to work from, I'll just have
> to see.
> Thanks Wil for all the info, It definitly sounds cool. I am looking into it
> right now.
> See you at the next meeting,
> - Mick

Joel Jaeggli Academic User Services
-- PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E --
In Dr. Johnson's famous dictionary patriotism is defined as the last
resort of the scoundrel. With all due respect to an enlightened but
inferior lexicographer I beg to submit that it is the first.
-- Ambrose Bierce, "The Devil's Dictionary"

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