Article View: net.arch
Article #2420Re: PDP-11 "red and green" stack violation
From: jdb
Date: Wed, 23 Apr 1986 02:27
Date: Wed, 23 Apr 1986 02:27
20 lines
1594 bytes
1594 bytes
In article <164@brl-sem.ARPA> ron@brl-sem.ARPA (Ron Natalie <ron>) writes: >> What is a "red and green" stack violation? I've heard references to this >> over the years, but no one has given me a satisfying explanation. >> Does it exist only on obscure members of the PDP-11 family, or is it >> a common, universal condition to which DEC has assigned a cute name? >> >Actually it is red and yellow stack violation. It isn't obscure PDP-11's >just the big ones (45's and 70's). Smaller (or maybe only older?) PDP-11's have a fixed stack overflow boundary at location 0400. I seem to recall that RSX-11M put its stack down at the bottom of memory. I'm not sure why they thought a stack which extended down to the middle of the interrupt vector space (0 - 0777) was ideal. The yellow and red limits are 16 words apart. -- John Bruner (S-1 Project, Lawrence Livermore National Laboratory) MILNET: jdb@mordor [jdb@s1-c.ARPA] (415) 422-0758 UUCP: ...!ucbvax!dual!mordor!jdb ...!seismo!mordor!jdb
Technical Details
Message-ID:
<6562@mordor.ARPA>Path:
arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!decwrl!pyramid!pesnta!amd!amdcad!lll-crg!mordor!jdbReferences:
<192@atari.UUcp> <164@brl-sem.ARPA>Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!decwrl!pyramid!pesnta!amd!amdcad!lll-crg!mordor!jdb From: jdb@mordor.UUCP Newsgroups: net.arch Subject: Re: PDP-11 "red and green" stack violation Message-ID: <6562@mordor.ARPA> Date: Tue, 22-Apr-86 21:27:40 EST Article-I.D.: mordor.6562 Posted: Tue Apr 22 21:27:40 1986 Date-Received: Sat, 26-Apr-86 02:31:17 EST References: <192@atari.UUcp> <164@brl-sem.ARPA> Reply-To: jdb@mordor.UUCP (John Bruner) Organization: S-1 Project, LLNL Lines: 20