From: Warner Losh <imp@bsdimp.com>
To: Noel Chiappa <jnc@mercury.lcs.mit.edu>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] Upgrading from 11/40 to 11/45 in Unix v6
Date: Mon, 31 Dec 2018 13:06:50 -0700 [thread overview]
Message-ID: <CANCZdfq5HfR4A_w8MBC8pCqs8NdSGkjJpOCuz5oDJQ6ZBaH-+Q@mail.gmail.com> (raw)
In-Reply-To: <20181231183804.71A6618C073@mercury.lcs.mit.edu>
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On Mon, Dec 31, 2018, 1:38 PM Noel Chiappa <jnc@mercury.lcs.mit.edu wrote:
> > From: Paul Winalski
>
> > What is magic number 0411? That one I've never heard of before.
>
> It's a PDP-11-ism. Separate I+D.
>
Venix/86, a v7 sys iii hybrid that ran on 8086/286 also uses it for
basically the same thing... its compiler was limited to one 64k code
segment and one 64k data / stack segment. The syscall interface depends on
this quirk as well...
Warner
>
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next prev parent reply other threads:[~2018-12-31 20:07 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-31 18:38 Noel Chiappa
2018-12-31 20:06 ` Warner Losh [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-12-31 17:20 Noel Chiappa
2018-12-31 6:51 Noel Chiappa
2018-12-31 15:06 ` Will Senn
2018-12-31 15:50 ` Clem Cole
2018-12-31 15:53 ` Warner Losh
2018-12-31 15:59 ` Clem Cole
2019-01-01 1:56 ` Eric Allman
2018-12-31 2:25 Will Senn
2018-12-31 2:43 ` Clem cole
2018-12-31 3:31 ` Will Senn
2018-12-31 14:55 ` Clem Cole
2018-12-31 15:05 ` ron
2018-12-31 15:53 ` Clem Cole
2018-12-31 17:30 ` ron
2018-12-31 18:20 ` Paul Winalski
2018-12-31 2:47 ` Clem cole
2018-12-31 3:08 ` Will Senn
2018-12-31 3:15 ` Clem cole
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