i386DX, help needed

[Jacek Malec]

On behalf of my friend, who cannot post, I'd like to ask the following
questions concerning i386DX processor residing in an AT board and
intended to run Unix:

1. We have been told that up to (?) 25MHz version, the 386 processor
   had to have the
   sigma-sigma
   sign on it to be able to run Unix (for DOS it had to be sigma-pi).

   Is it still true for the 33MHZ version? (we have the processor
   without any such sign).

2. We have been told that "D" version of the processor is error-free.
   Does the DX mean that we have D-version (we have a processor with the
   following set of inscriptions:

   i386
   A80386DX-33  IV
   SX219
   L0291855
   INTEL (m) (C) '85

3. Where can we find the program testing the multiplication error
   (which has been announced in '87)?

These are all specific questions I have been asked to post. Maybe you
have some other comments about Unix running on such processor?

I would greatly appreciate e-mail answers to me (jam at ida.liu.se),
possibly with a Cc: to marekk at amargosa.uucp, the original source of
question.  But I'll try to read these groups for some time.

TIME is important, as they have possibility to exchange the processor
or the whole motherboard up till the end of January.

Thanks in advance
--
Jacek
(Jacek Malec, Dept of Computer and Information Science,
Linkoping University, 583 81 Linkoping, Sweden,
tel. +46 13 282362, email: jam at ida.liu.se)