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Date: Sat, 25 Jun 2005 13:14:54 -0500
From: Alejandro Bonilla <abonilla@linuxwireless.org>
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To: Vojtech Pavlik <vojtech@suse.cz>
CC: Pavel Machek <pavel@suse.cz>, Paul Sladen <thinkpad@paul.sladen.org>,
       linux-thinkpad@linux-thinkpad.org,
       Eric Piel <Eric.Piel@tremplin-utc.net>, borislav@users.sourceforge.net,
       "'Yani Ioannou'" <yani.ioannou@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)
References: <1119559367.20628.5.camel@mindpipe> <Pine.LNX.4.21.0506250712140.10376-100000@starsky.19inch.net> <20050625144736.GB7496@atrey.karlin.mff.cuni.cz> <20050625150030.GA1636@ucw.cz>
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Vojtech Pavlik wrote:

>On Sat, Jun 25, 2005 at 04:47:36PM +0200, Pavel Machek wrote:
>  
>
>>Hi!
>>
>>
>>    
>>
>>>>Yup, it's just doing port IO.  Get a kernel debugger for windows like
>>>>softice and this will be trivial to RE.
>>>>READ_PORT_USHORT / WRITE_PORT_UCHAR / READ_PORT_UCHAR
>>>>        
>>>>
>>>There are 3 ports involved.  The 0xed "non-existant delay port" and a pair
>>>of ports that are through the Super-I/O / IDE.  They are used in a
>>>index+value setup similar to reading/writing the AT keyboard
>>>      
>>>
>>>>controller.
>>>>        
>>>>
>>I think you got it... 2ports seem like enough for some kind of small
>>u-controller...
>>    
>>
> 
>Quite possibly the ACPI EC. Most likely a side entrance into the onboard 8042.
>
>  
>
Vojtech,

    What is the onboads 8042?

.Alejandro