From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
To: tuhs@tuhs.org
Cc: jnc@mercury.lcs.mit.edu
Subject: Re: [TUHS] One's complement (was: reviving a bit of WWB)
Date: Fri, 25 Sep 2020 11:21:08 -0400 (EDT) [thread overview]
Message-ID: <20200925152108.2AD1218C0C1@mercury.lcs.mit.edu> (raw)
> From: Warner Losh
> I'm pretty sure PDP-10 wasn't 1's compliment / was 2's compliment..
Just to confirm, I pulled out my PDP-10 Hardware Reference Manual; Vol I - CPU
(EK-10/20-HR-001), and it does indeed say (pg. 1-12): "The fixed-point
arithmetic instructions use 2's complement representations to do binary
arithmetic." Selah.
Noel
next reply other threads:[~2020-09-25 15:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-25 15:21 Noel Chiappa [this message]
2020-09-25 15:30 ` Warner Losh
2020-09-25 16:10 ` Ronald Natalie
-- strict thread matches above, loose matches on Subject: below --
2020-09-19 1:51 [TUHS] reviving a bit of WWB Doug McIlroy
2020-09-20 18:42 ` arnold
2020-09-20 19:28 ` Will Senn
2020-09-20 20:12 ` Steve Nickolas
2020-09-24 2:25 ` Dave Horsfall
2020-09-24 2:33 ` Clem Cole
2020-09-25 0:18 ` [TUHS] One's complement (was: reviving a bit of WWB) Greg 'groggy' Lehey
2020-09-25 0:22 ` Warner Losh
2020-09-25 1:39 ` John Cowan
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