1994-04-20 - cryptophone ideas

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From: Eric Blossom <eb@sr.hp.com>
To: pgf@srl01.cacs.usl.edu
Message Hash: 8dcdda2cd8e5c1063824ed30153ebb6d0ef7b0d42c29121ab45ee4453b40a25e
Message ID: <9404202202.AA18655@srlr14.sr.hp.com>
Reply To: <199404192239.AA17456@srl03.cacs.usl.edu>
UTC Datetime: 1994-04-20 21:56:54 UTC
Raw Date: Wed, 20 Apr 94 14:56:54 PDT

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From: Eric Blossom <eb@sr.hp.com>
Date: Wed, 20 Apr 94 14:56:54 PDT
To: pgf@srl01.cacs.usl.edu
Subject: cryptophone ideas
In-Reply-To: <199404192239.AA17456@srl03.cacs.usl.edu>
Message-ID: <9404202202.AA18655@srlr14.sr.hp.com>
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> Anyway, why do you need a DSP? I have read in several places that
> DSP's are going to be "replaced" by the CPU as time goes on and the
> CPUs just get more and more powerful.

Yeah, eventually.

Analog Devices 2105's cost $12 in quantity 1.

They are capable of doing 2 data moves, a 16x16 multiply, a 40 bit
accumulate and a prefech of the next instruction all in 100ns.

10 Million Multiply-Accumulates per second.  Ever tried that on a 386?

For more money, you can get ones with 60ns clocks (16.7 MACS).

Eric Blossom





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