From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by oss.sgi.com (8.11.2/8.11.3) id f78AJEX03930 for linux-mips-outgoing; Wed, 8 Aug 2001 03:19:14 -0700 Received: from dea.waldorf-gmbh.de (u-180-20.karlsruhe.ipdial.viaginterkom.de [62.180.20.180]) by oss.sgi.com (8.11.2/8.11.3) with SMTP id f78AJ7V03921 for ; Wed, 8 Aug 2001 03:19:07 -0700 Received: (from ralf@localhost) by dea.waldorf-gmbh.de (8.11.1/8.11.1) id f78AH6902453; Wed, 8 Aug 2001 12:17:06 +0200 Date: Wed, 8 Aug 2001 12:17:06 +0200 From: Ralf Baechle To: "J. Scott Kasten" Cc: Brandon Barker , "linux-mips@oss.sgi.com" Subject: Re: Indy 64 or 32 bit? Message-ID: <20010808121706.A602@bacchus.dhis.org> References: <01080623471400.01828@linux> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from jsk@tetracon-eng.net on Tue, Aug 07, 2001 at 08:45:17PM -0400 X-Accept-Language: de,en,fr Sender: owner-linux-mips@oss.sgi.com Precedence: bulk On Tue, Aug 07, 2001 at 08:45:17PM -0400, J. Scott Kasten wrote: > Well, it's kind of both. The R4000 and up are 64 bit CPU's capable of > running either 32 or 64 bit code. The MIPS address space is a little > wierd such that you can kinda munge 32 and 64 bit code togeather under the > right circumstances. Right circumstances = almost always. Actually Linux makes sure that it's indeed always. > Some of the old hands here could tell you better how Irix behaves on those > boxes. I know you can compile code with 64 bit int and pointers and it > will run on those boxes under Irix, but there is a little more to it than > that. That's not supported on all systems. An Indy for example is limited to 128mb RAM as shipped by SGI (256 with aftermarket parts). There is no point in supporting 64-bit address space on such a system and so SGI doesn't support only N32. > I've used both linux and Irix on the Indy. Quite frankly, I would > consider getting a second HD if cheep enough so that you could keep both > around. (Note: don't put 2 high RPM drives in the Indy, or we are talking > melt down of your pretty blue toy...) External drives work just fine and can be hidden where their sound isn't so annoying. > I've found much to like in Irix in addition to the flexibility of Linux. Yep and they co-exist nicely. Ralf