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From: mjc@brueer.UUCP
Newsgroups: comp.unix.wizards
Subject: Sun 3/50 MMU
Message-ID: <495@brueer.ee.brunel.ac.uk>
Date: Thu, 26-Mar-87 05:46:48 EST
Article-I.D.: brueer.495
Posted: Thu Mar 26 05:46:48 1987
Date-Received: Sat, 28-Mar-87 15:27:07 EST
Organization: Dept of EE & E, Brunel University, Uxbridge, U.K.
Lines: 18
Keywords: Sun MMU 3/50 fault

This little program produces a segmentation fault on a Sun 3/75 or 3/110
but runs to the end on a 3/50. It would appear that the Sun 3/50 MMU is
similar to the Sun 2 MMU in that it only looks at the bottom 24 bits
of the address.

Is this the true story, and if so is there a 
compiler #define that can be used to discriminate between
a Sun 3/50 and a 3/75 in the same way that #ifdef mc68020 is
used to tell the difference between a Sun 3 and Sun 2.

main()
{
  char *p = "Hello world" ;

  p += 0xc0000000 ;

  printf ("%s\n",p ) ;
}