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Date:      Tue, 07 Jul 1998 11:28:12 -0700
From:      Mike Smith <mike@smith.net.au>
To:        Thomas Zenker <thz@Lennartz-Electronic.DE>
Cc:        Mike Smith <mike@smith.net.au>, freebsd-current@FreeBSD.ORG
Subject:   Re: FreeBSD in less than 4MB RAM 
Message-ID:  <199807071828.LAA01144@dingo.cdrom.com>
In-Reply-To: Your message of "Tue, 07 Jul 1998 20:10:29 %2B0200." <19980707201029.31948@tue.le> 

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> > > For those which say "put in more memory/disk": This doesn't help if you
> > > have to run out of batteries w/ solar-panels on very remote localities,
> > > only access by radio-telemetry. You need very low power equipment there.
> > > So the question is not $ but watts.
> > 
> > In the same timeframe, memory power consumption has gone down by more 
> > than an order of maginitude, while cost has fallen even further.
> > 
> > Sorry, but the argument still holds good.  8)
> 
> Sorry, but to run with 3 watts from dynamic memory is not possible,
> do you know prices of SRAM? Also effordable harddisks are
> much lower now in consumption, but not that low. So booting from
> eprom or floppy is a must.

No insult intended, but your design obviously sucks.  I am working right
now with a PC104 board not specifically designed for low-power
operation.  It manages to put an NX586-based micro, all the standard PC
peripherals, 8M of RAM, 8M of flash, etc. into a sub-3W power budget.

Like I said, this is a design that's not even trying.  Look at the 
power budget that eg. the Palm Pilot works with.

-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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