C bug causes double panic
Larry Campbell
campbell at redsox.UUCP
Tue Mar 28 22:01:33 AEST 1989
In article <18250 at gatech.edu> ken at gatech.UUCP (Ken Seefried iii) writes:
}In article <9989 at ihlpb.ATT.COM> gregg at ihlpb.ATT.COM (Wonderly) writes:
}>From article <18227 at gatech.edu>, by ken at gatech.edu (Ken Seefried iii):
}>> In article <2863 at daisy.UUCP> david at daisy.UUCP (David Schachter) writes:
}
}[me wondering out loud about what the 80286 was designed for]
}
}>Multics comes to mind... 64K segments, 4 access levels, transfer
}>gates...
}
}I thought about that, but it is my understanding (which surely could
}be wrong) that multics is based on dynamicly allocated, variable size
}segments of potentially large size. Certainly, the 80286 doesn't fit
}this criteria with its fixed size, 64K segments. Also, doesn't
}Multics use more than 4 rings of protection?
Multics segments were limited in size to 256K 36-bit words. In the
1960s, that seemed like a lot. These days it seems pretty puny.
Of course, it's still a heck of a lot bigger than 64K bytes.
--
Larry Campbell The Boston Software Works, Inc.
campbell at bsw.com 120 Fulton Street
wjh12!redsox!campbell Boston, MA 02146
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