[haiku] Re: Why the MMU?
- From: "Gustavo Weisz" <gustavo.weisz@xxxxxxxxx>
- To: haiku@xxxxxxxxxxxxx
- Date: Tue, 9 Dec 2008 14:12:35 -0300
I think every O.S. can run without an MMU (of course he has to implement
full address translation...)
The reason why MMU is used is that in fact, not damn slow address
translation,
(MMU can match a searched value against full page table simultanoisly...)
Regards,
Gustavo.-
On Tue, Dec 9, 2008 at 2:02 PM, Andrew McCall <andrew.mccall@xxxxxxxxx>wrote:
> 2008/12/9 Zenja Solaja <solaja@xxxxxxxxx>:
> > Have they ever made a 32 bit CPU without an MMU in the last 30 years?
> Even
> > if such an exotic beast existed, would it be worthwile complicating the
> > kernel to support such exotic hardware? I always thought that Haiku's
> > primary target was desktop PC's with modern hardware, not exotic embedded
> > devices.
>
> Thats not really the intention of my of my original post. I was
> interested in why the MMU was needed in hardware.
>
> I personally beleive that desktop PC's are slowly dying out and
> perhaps could see a distant future where the requirement for running
> Haiku on mobile phones, PDA's, GPS units and media players and other
> non-desktop devices was a big sell.
>
> But please, don't mistake what I am saying - I am not saying everyone
> shoud leave x86 and desktop design to start porting to a mobile phone
> :) I was just wondering if there is actually a reason why Haiku would
> _never_ be able to work without a MMU.
>
> --
> Thanks,
>
> Andrew McCall
> andrew.mccall@xxxxxxxxx
>
>
--
"Six degrees of inner turbulence",
Best album ever!
Westor MM Sim: http://sites.google.com/site/westormmsim/
(\__/)
(='.'=)This is Bunny. Copy and paste bunny
(")_(") to help him gain world domination
Other related posts:
