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From: Jacob Lifshay <programmerjake@gmail.com>
To: Libre-RISCV General Development <libre-riscv-dev@lists.libre-riscv.org>
Subject: Re: [libre-riscv-dev] [Bug 267] The efficiency of adder/subtractor
Date: Tue, 7 Apr 2020 08:25:45 -0700
Message-ID: <CAC2bXD5Vd=OPuHr5hTyE7E3aLQL924aHmeq3-z7MNWCsLFF3_A@mail.gmail.com> (raw)
In-Reply-To: <395ba2c70f9f495f81e02056b8cf8b22@f-cpu.org>

On Tue, Apr 7, 2020, 08:14 <whygee@f-cpu.org> wrote:

> Have a look :
> http://www.ecs.umass.edu/ece/koren/arith/simulator/Add/lookahead/


Neat! It is, however, limited to only 2 levels of lookahead circuits, which
is only sufficient for 16 or maybe 32 bits, not for 64 or more.

Jacob
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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26 22:05 [libre-riscv-dev] [Bug 267] New: " bugzilla-daemon
2020-03-26 23:10 ` [libre-riscv-dev] [Bug 267] " bugzilla-daemon
2020-04-07  5:23 ` bugzilla-daemon
2020-04-07  9:48 ` bugzilla-daemon
2020-04-07 11:39 ` bugzilla-daemon
2020-04-07 11:48 ` bugzilla-daemon
2020-04-07 13:15 ` bugzilla-daemon
2020-04-07 13:36 ` bugzilla-daemon
2020-04-07 13:38 ` bugzilla-daemon
2020-04-07 14:44 ` bugzilla-daemon
2020-04-07 15:14   ` whygee
2020-04-07 15:25     ` Jacob Lifshay [this message]
2020-04-07 15:46       ` whygee

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