Absolutely very promising.
This is sound in my ears, really smart approach!
I did a short research and found teh following link:
http://www.intel.com/design/strong/SA_110doc.htm
Johannes
> -----Original Message-----
> From: newtontalk-bounce_at_newtontalk.net
> [mailto:newtontalk-bounce_at_newtontalk.net]On Behalf Of Jochen Schäfer
> Sent: Tuesday, July 09, 2002 3:27 PM
> To: newtontalk_at_newtontalk.net
> Subject: Re: [NTLK] New accelerator idea. needs no crystal. Need Help.
>
>
>
>
> Very promising. Can you point us to the SA docs?
>
> Jochen
>
>
> On Tue, 09 Jul 2002 13:55:20 +0100, Andy Collins wrote:
>
> >
> >Hi Folks,
> >
> >I think I've come up with a different method of speeding up the MP2x00
> >without needing to change the crystal.
> >
> >I've been pondering speeding my Newt up since discovering
> Stephanie's web
> >page but the things that put me off were...
> >1) I'd need to bring the speed down to download packages and
> backup (I only
> >have serial coms).
> >2) Running the wires around radiating at the clock frequency.
> >3) It doesn't seem right to speed up everything, memory timings, LCD
> >refresh rates etc.
> >
> >I asked a hardware savvy friend of mine if it was possible to
> use some kind
> >of chip to switch frequency. That way this chip could be near
> the processor
> >and the wire to the physical switch would only be handling DC. At least
> >that would cross of one of my objections.
> >
> >The upshot of that was that it could easily be arrange but he asked the
> >question why didn't I just change the multiplier? Why? because I didn't
> >know there was one :-). It seems the multiplier takes the
> crystal frequency
> >given to the StrongArm microprocessor and multiplies it by a set
> amount to
> >give the internal frequency that the SA110 runs at. It turns out
> that there
> >are four pins on the SA110 that set the multiplier inside the processor.
> >
> >The great advantage is that, if my hunch is right, only the core of the
> >chip will run fast. The Voyager and therefor the serial coms etc
> will run
> >at normal speed. The memory timing will remain unchanged. There is a
> >question mark of sound (chipmunk or not) but apart from that I recon the
> >Newt won't need to be switched to the normal frequency again.
> >
> >This is where I'm at...
> >I've Downloaded the data sheets and worked out what's what.
> >I've lifted the for core clock multiplier pins from the circuit board
> >(_VERY_ tricky don't try this! very hard!).
> >Fitted a small 4 pole tri-state DIL switch (this will be removed
> when it's
> >all working).
> >Now I can try trying the pins controlling the multiplier high or
> low as I
> >wish. switch settings and check the results.
> >
> >Now here's the problem.
> >
> >It doesn't work!! I can change the levels on the multiplier pins but it
> >doesn't seem to work properly. It either works at the same speed
> or hangs.
> >Has anyone else looked into this? Any hints and tips from the hardware
> >gurus greatly appreciated.
> >
> >
> >Thanks.
> >
> >Andy.
> >
> >WARNING... This is proving tricky. It might turn out to be a brilliant
> >idea. However, I might wreck my Newton. Don't blame me if you
> try this and
> >wreck yours!
> >
> >
> >--
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> >Read the Newton FAQ: http://www.guns-media.com/mirrors/newton/faq/
> >This is the NewtonTalk mailing list - http://www.newtontalk.net
> >
>
>
>
> --
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>
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