Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)
From: Alejandro Bonilla
Date: Sat Jun 25 2005 - 14:18:27 EST
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
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