Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)

[Paul Sladen]

On Thu, 23 Jun 2005, Lee Revell wrote:
> 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.

>From what I remember, my conclusion was that these instructions were the
ones to park the heads and then lock the IDE bus.  It's a couple of months
ago, but somewhere I have the simplified version of what it was doing...

	-Paul
-- 
It sometimes snows here.  Cambridge, GB


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