Re: Installing debian on Highscreen Alpha 5000 / Alpha PC 164LX

[Paul Slootman <paul@wau.mis.ah.nl>]

On Thu 20 Aug 1998, Dirk Luetjens wrote:

Can't help you with your network card problem; however, setting up the
AlphaBIOS works fine with the README available from
http://lhpca.univ-lyon1.fr/axp/debian.html .

> I although see some "unaligned traps"
> 
> > kernel: unaligned trap at fffffc00003c228c: fffffc00000514be 28 1
> > kernel: unaligned trap at fffffc00003c22a0: fffffc00000514c2 28 2
> > kernel: unaligned trap at fffffc00003c228c: fffffc00000514ce 28 1
> > kernel: unaligned trap at fffffc00003c22a0: fffffc00000514d2 28 2
> 
> but I don´t know what it is?

It's a bug in the kernel sources, which don't have any bad effect
besides slowing the machine somewhat; the unaligned traps are, uhm, trapped,
and the access to the unaligned data is emulated by the kernel. This is a
lot slower than aligned accesses (where if you want to read a 4-byte
value, that value needs to be at a multiple of 4, etc.).


Paul Slootman
-- 
home: paul@wurtel.demon.nl | work: paul@murphy.nl
http://www.wurtel.demon.nl | Murphy Software, Enschede, the Netherlands
"In my opinion MS is a lot better at making money than it is
 at making good operating systems." (Linus Torvalds, August 1997)