jfh@killer.UUCP (John Haugh) (05/15/87)
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 ...