Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!columbia!rutgers!sri-spam!ames!ptsfa!hoptoad!academ!killer!jfh
From: jfh@killer.UUCP (John Haugh)
Newsgroups: comp.sys.m68k
Subject: What out for 'compatibility' with other vendors software
Message-ID: <890@killer.UUCP>
Date: Fri, 15-May-87 13:53:45 EDT
Article-I.D.: killer.890
Posted: Fri May 15 13:53:45 1987
Date-Received: Sat, 23-May-87 04:24:22 EDT
Distribution: na
Organization: The Unix(tm) Connection, Dallas, Texas
Lines: 25
Keywords: software compatibility

Recently there was a big discussion about 'cheap unix boxes'.  Here's
one for the books.  Stride Micro and Logic Process Co. are both claiming
compatibility with NCR.  While a Pinnacle (the parent of Logic Process Co.),
I learned that the second instruction of Stride Micro's /lib/crt0.o file
was a TRAP #0x3, and that brought to mind a way to determine if the vendor's
software really was compatible.  Adding the following line to /etc/magic
after all of the lines '- version %ld' will let file(1) tell you if a file
was compiled on a Stride Micro:

>174	short		047103		- Stride Micro

(Anyone interested in other magic numbers, I have plenty.)

If anyone knows about the other companies, what weird instructions they
have in /lib/crt0.o, maybe we can figure out enough magic numbers to
determine where the stuff came from.

Anyone who bought a machine from LPC may want to run file(1) with
that magic number to determine WHERE some of those 'Berkeley Enhancements'
came from ...

- John.		(Freddy the Freeloader - Space Tripping through life)

Disclaimer -
	These aren't my thoughts, and neither are yours ...