DDI flat driver and power managment/Bios routines call

From: claudio tabacco (c.tabacco_at_pxl.it)
Date: 04/28/04 

Date: 28 Apr 2004 06:25:19 -0700

I'm tring to implement power managment capabilities on vga flat
driver.
My board is an x86 based board and my kernel is based on CEPC.

My goal is to switch off and on the monitor on application request.

I've decided to implement the power managment code in
GPEFlat::DrvEscape in order to give applications the ability to send
power management commands to the driver.

I've also decided to use Vesa VBE/PM extensions to set/get power
states.

My question is:
How can I call from WinCE (Protected Mode) the VESA VBE bios
functions?
In order to set power states I've to invoke INT 10h function
4F10h(AX)/01h(BL).
But I cant call INT instruction directly from proteced mode.

So my final question is,
How can I call bios routines from WindowsCE?

Thanks
Claudio

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