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Subject: Re: A question about power on
From: Ben Warren <bwarren@qstreams.com>
To: enorm <enorm@126.com>
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Date: Thu, 21 Sep 2006 09:47:24 -0400
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On Thu, 2006-09-21 at 19:11 +0800, enorm wrote:
> After power on, cpu reads instruction from certain addr. But how does it 
> know how many bits he can read at once. 

This can't be generalized.  Read the "Reset, Clocking and
Initialization", or equivalent, chapter of your CPU's reference manual.