Re: [NTLK] WWNC & Einstein

From: Jim Witte (jswitte_at_bloomington.in.us)
Date: Sat Sep 11 2004 - 02:55:30 PDT


> native code execution on ARM-based PDAs would mean Einstein is

   Depends on how many devices there are.

> hardware feature of a model). so i guess it would be a lot of work to
> support several models and write all the drivers.

   Yeah, but that's what Apple intended from the beginning with the
platform driver approach.

> native code execution on POSIX would mean that you need a ARM
> processor(?). This would exclude x86 tablet PCs, wouldn't it. question

>> (Quoteing Paul:)
>> It is to improve the emulator by automatic recompilation to the
>> target processor. With this, we will get a decent speed, especially
>> considering that the code executed by NewtonOS is mainly in ROM and
>> hence we can recompile once. I think that JIT will do something
>> correct on 400 MHz+ PDAs around including Tablet PCs (even if Tablet
>> PCs with their x86 processors aren't very suitable for JITing ARM
>> processors).

> is: would people like to use a tablet PC as a newton replacement? I

   I for one would like a Color NewtonSlate :) Einstein would also
allow for a "Newton NC" to finally come to light, in the form of
something the size of a Palm running NOS.

> How much performance would you lose in running the JIT emulation on an
> ARM processor (Pocket PC)? If it is below 50% (and could be improved
> in the future), I would vote for the JIT.

   No idea. Also see above. Should be not much reduction.

Jim

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