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Re: bug with quadra 605



Wouter Verhelst wrote:
> 
> On Fri, 20 Apr 2001 idalton@ferret.phonewave.net wrote:
> 
> > (I've just subscribed to the list, so am replying via the list archive)
> >
> >
> > Hamish Moffatt <[8]hamish@debian.org> so spoke:
> >
> > On Tue, Mar 06, 2001 at 09:56:07AM -0300, Daniel Macedo Lorenzini wrote:
> > > inittab with the inittab.real the system starts,
> > > but when i try to
> > > install some packages with apt-get or dpkg i get
> > > some error messages
> > > like Segmentation fault of Bus error, which sounds
> > > very bad to me.
> > > i have tryied installing it again, but the problem
> > > repeats. i tryied to
> > > install the kernel-souce deb package to compile the
> > > kernel, but the dpkg
> > > said that the end of file was strange and couldn t
> > > install.
> > >
> > > anyone has a clue of what is going on?
> >
> > Sounds like a hardware fault? Bad memory perhaps?
> >
> > --------
> >
> > I've seen the same things with my 'new' Quadra 605:
> > * Segmentation fault
> > * Bus error
> > * Illegal instruction
> >
> > I'm wondering if, despite this machine's listing in the list of macs
> > known to run Linux, that it won't work because of its having an LC040
> > (no FPU).
> 
> That is almost correct (an "real" 68040 does not have an FPU either, it's
> only got a MMU).
> 

Quite wrong!  A 68040 has both an built in MMU and FPU.  The 68030 has a
built in MMU but requires an external FPU, usually a 68882.

> > To date:
> >
> > dpkg-reconfigure fails to run.
> > apt-get fails to run.
> >
> > dpkg -i <foo.deb> runs.
> 
> I have experienced the same symptoms on a Centris 610 -- yes, with LC040.
> 
> The system works for the most part, but when it comes to dealing with
> floating point operations, things fail.
> 
> Never mind that ;-)
> 

These problems are caused by LC040 processors with a bad mask revision. 
Apple seems to have used a lot of them.

> --
> wouter dot verhelst at advalvas in belgium
> #ifdef NOT_A_GODDAMN_YANK
>         { 0x10, "Minimise Delay" },
> #else
>         { 0x10, "Minimize Delay" },
> #endif
> /* ipchains.c */
> 
> --
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-- 
Ray Knight
audilvr@speakeasy.org
1983 XJ900 Seca



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